./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-lit/fkp2013-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f649b71-1dd8-474e-b905-75ba5c2b67c1/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f649b71-1dd8-474e-b905-75ba5c2b67c1/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f649b71-1dd8-474e-b905-75ba5c2b67c1/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f649b71-1dd8-474e-b905-75ba5c2b67c1/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-lit/fkp2013-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f649b71-1dd8-474e-b905-75ba5c2b67c1/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f649b71-1dd8-474e-b905-75ba5c2b67c1/bin/uautomizer-Dbtcem3rbc --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 e812004a84a4494a04d3a026bee09dbf1dbf7d202520f02258b12ac817a7a74e --- 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-5e519f3 [2022-11-02 20:35:31,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:35:31,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:35:31,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:35:31,331 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:35:31,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:35:31,334 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:35:31,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:35:31,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:35:31,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:35:31,340 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:35:31,341 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:35:31,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:35:31,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:35:31,344 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:35:31,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:35:31,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:35:31,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:35:31,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:35:31,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:35:31,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:35:31,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:35:31,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:35:31,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:35:31,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:35:31,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:35:31,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:35:31,360 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:35:31,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:35:31,362 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:35:31,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:35:31,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:35:31,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:35:31,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:35:31,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:35:31,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:35:31,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:35:31,368 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:35:31,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:35:31,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:35:31,370 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:35:31,371 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f649b71-1dd8-474e-b905-75ba5c2b67c1/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:35:31,394 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:35:31,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:35:31,395 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:35:31,395 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:35:31,396 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:35:31,396 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:35:31,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:35:31,397 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:35:31,398 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:35:31,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:35:31,398 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:35:31,399 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:35:31,399 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:35:31,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:35:31,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:35:31,400 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:35:31,400 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:35:31,400 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:35:31,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:35:31,401 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:35:31,401 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:35:31,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:35:31,402 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:35:31,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:35:31,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:35:31,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:35:31,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:35:31,403 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:35:31,403 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:35:31,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:35:31,404 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:35:31,404 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:35:31,404 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:35:31,405 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_9f649b71-1dd8-474e-b905-75ba5c2b67c1/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f649b71-1dd8-474e-b905-75ba5c2b67c1/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e812004a84a4494a04d3a026bee09dbf1dbf7d202520f02258b12ac817a7a74e [2022-11-02 20:35:31,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:35:31,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:35:31,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:35:31,726 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:35:31,727 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:35:31,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f649b71-1dd8-474e-b905-75ba5c2b67c1/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-lit/fkp2013-2.i [2022-11-02 20:35:31,820 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f649b71-1dd8-474e-b905-75ba5c2b67c1/bin/uautomizer-Dbtcem3rbc/data/c0d0e6e4e/83adb3cf7f7945f9bdb4d610efadae6f/FLAG0ffba89c1 [2022-11-02 20:35:32,289 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:35:32,294 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f649b71-1dd8-474e-b905-75ba5c2b67c1/sv-benchmarks/c/pthread-lit/fkp2013-2.i [2022-11-02 20:35:32,320 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f649b71-1dd8-474e-b905-75ba5c2b67c1/bin/uautomizer-Dbtcem3rbc/data/c0d0e6e4e/83adb3cf7f7945f9bdb4d610efadae6f/FLAG0ffba89c1 [2022-11-02 20:35:32,632 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f649b71-1dd8-474e-b905-75ba5c2b67c1/bin/uautomizer-Dbtcem3rbc/data/c0d0e6e4e/83adb3cf7f7945f9bdb4d610efadae6f [2022-11-02 20:35:32,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:35:32,636 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:35:32,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:35:32,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:35:32,641 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:35:32,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:35:32" (1/1) ... [2022-11-02 20:35:32,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fec1713 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:32, skipping insertion in model container [2022-11-02 20:35:32,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:35:32" (1/1) ... [2022-11-02 20:35:32,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:35:32,684 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:35:33,061 WARN L230 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_9f649b71-1dd8-474e-b905-75ba5c2b67c1/sv-benchmarks/c/pthread-lit/fkp2013-2.i[30003,30016] [2022-11-02 20:35:33,075 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:35:33,082 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:35:33,119 WARN L230 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_9f649b71-1dd8-474e-b905-75ba5c2b67c1/sv-benchmarks/c/pthread-lit/fkp2013-2.i[30003,30016] [2022-11-02 20:35:33,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:35:33,173 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:35:33,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:33 WrapperNode [2022-11-02 20:35:33,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:35:33,175 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:35:33,175 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:35:33,175 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:35:33,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:33" (1/1) ... [2022-11-02 20:35:33,217 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:33" (1/1) ... [2022-11-02 20:35:33,242 INFO L138 Inliner]: procedures = 172, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2022-11-02 20:35:33,242 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:35:33,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:35:33,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:35:33,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:35:33,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:33" (1/1) ... [2022-11-02 20:35:33,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:33" (1/1) ... [2022-11-02 20:35:33,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:33" (1/1) ... [2022-11-02 20:35:33,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:33" (1/1) ... [2022-11-02 20:35:33,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:33" (1/1) ... [2022-11-02 20:35:33,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:33" (1/1) ... [2022-11-02 20:35:33,285 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:33" (1/1) ... [2022-11-02 20:35:33,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:33" (1/1) ... [2022-11-02 20:35:33,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:35:33,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:35:33,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:35:33,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:35:33,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:33" (1/1) ... [2022-11-02 20:35:33,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:35:33,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f649b71-1dd8-474e-b905-75ba5c2b67c1/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:35:33,328 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f649b71-1dd8-474e-b905-75ba5c2b67c1/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:35:33,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f649b71-1dd8-474e-b905-75ba5c2b67c1/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:35:33,375 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-11-02 20:35:33,375 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-11-02 20:35:33,376 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-02 20:35:33,376 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-02 20:35:33,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:35:33,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:35:33,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:35:33,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:35:33,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:35:33,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:35:33,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:35:33,378 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:35:33,513 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:35:33,515 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:35:33,637 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:35:33,644 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:35:33,644 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:35:33,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:35:33 BoogieIcfgContainer [2022-11-02 20:35:33,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:35:33,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:35:33,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:35:33,653 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:35:33,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:35:32" (1/3) ... [2022-11-02 20:35:33,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62f5d594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:35:33, skipping insertion in model container [2022-11-02 20:35:33,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:33" (2/3) ... [2022-11-02 20:35:33,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62f5d594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:35:33, skipping insertion in model container [2022-11-02 20:35:33,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:35:33" (3/3) ... [2022-11-02 20:35:33,657 INFO L112 eAbstractionObserver]: Analyzing ICFG fkp2013-2.i [2022-11-02 20:35:33,666 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:35:33,678 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:35:33,678 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:35:33,678 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:35:33,775 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:35:33,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 68 transitions, 146 flow [2022-11-02 20:35:33,864 INFO L130 PetriNetUnfolder]: 3/81 cut-off events. [2022-11-02 20:35:33,865 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:35:33,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 81 events. 3/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 100 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 60. Up to 4 conditions per place. [2022-11-02 20:35:33,869 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 68 transitions, 146 flow [2022-11-02 20:35:33,873 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 67 transitions, 142 flow [2022-11-02 20:35:33,882 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:35:33,889 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;@28379278, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:35:33,889 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-02 20:35:33,904 INFO L130 PetriNetUnfolder]: 2/45 cut-off events. [2022-11-02 20:35:33,905 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:35:33,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:35:33,906 INFO L208 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] [2022-11-02 20:35:33,906 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:35:33,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:33,912 INFO L85 PathProgramCache]: Analyzing trace with hash 702214347, now seen corresponding path program 1 times [2022-11-02 20:35:33,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:33,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362163128] [2022-11-02 20:35:33,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:33,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:34,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:34,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:34,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:34,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362163128] [2022-11-02 20:35:34,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362163128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:34,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:34,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:35:34,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241879002] [2022-11-02 20:35:34,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:34,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:35:34,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:34,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:35:34,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:35:34,581 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 68 [2022-11-02 20:35:34,584 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 142 flow. Second operand has 5 states, 5 states have (on average 55.4) internal successors, (277), 5 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:34,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:35:34,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 68 [2022-11-02 20:35:34,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:35:34,710 INFO L130 PetriNetUnfolder]: 11/142 cut-off events. [2022-11-02 20:35:34,711 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-02 20:35:34,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 142 events. 11/142 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 467 event pairs, 2 based on Foata normal form. 20/155 useless extension candidates. Maximal degree in co-relation 165. Up to 10 conditions per place. [2022-11-02 20:35:34,714 INFO L137 encePairwiseOnDemand]: 60/68 looper letters, 16 selfloop transitions, 8 changer transitions 0/77 dead transitions. [2022-11-02 20:35:34,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 77 transitions, 216 flow [2022-11-02 20:35:34,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:35:34,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-02 20:35:34,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 466 transitions. [2022-11-02 20:35:34,746 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8566176470588235 [2022-11-02 20:35:34,747 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 466 transitions. [2022-11-02 20:35:34,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 466 transitions. [2022-11-02 20:35:34,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:35:34,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 466 transitions. [2022-11-02 20:35:34,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:34,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:34,779 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:34,781 INFO L175 Difference]: Start difference. First operand has 71 places, 67 transitions, 142 flow. Second operand 8 states and 466 transitions. [2022-11-02 20:35:34,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 77 transitions, 216 flow [2022-11-02 20:35:34,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 77 transitions, 215 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:35:34,788 INFO L231 Difference]: Finished difference. Result has 80 places, 70 transitions, 183 flow [2022-11-02 20:35:34,790 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=183, PETRI_PLACES=80, PETRI_TRANSITIONS=70} [2022-11-02 20:35:34,794 INFO L287 CegarLoopForPetriNet]: 71 programPoint places, 9 predicate places. [2022-11-02 20:35:34,795 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 70 transitions, 183 flow [2022-11-02 20:35:34,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 55.4) internal successors, (277), 5 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:34,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:35:34,796 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:34,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:35:34,796 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:35:34,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:34,797 INFO L85 PathProgramCache]: Analyzing trace with hash 30111252, now seen corresponding path program 1 times [2022-11-02 20:35:34,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:34,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876818028] [2022-11-02 20:35:34,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:34,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:35:34,827 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:35:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:35:34,868 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:35:34,868 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:35:34,870 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-11-02 20:35:34,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-11-02 20:35:34,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-02 20:35:34,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-11-02 20:35:34,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:35:34,874 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-02 20:35:34,877 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:35:34,877 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-02 20:35:34,904 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:35:34,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 89 transitions, 202 flow [2022-11-02 20:35:34,930 INFO L130 PetriNetUnfolder]: 4/107 cut-off events. [2022-11-02 20:35:34,930 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:35:34,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 107 events. 4/107 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 140 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 116. Up to 6 conditions per place. [2022-11-02 20:35:34,932 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 89 transitions, 202 flow [2022-11-02 20:35:34,933 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 74 transitions, 163 flow [2022-11-02 20:35:34,936 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:35:34,937 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;@28379278, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:35:34,937 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-02 20:35:34,946 INFO L130 PetriNetUnfolder]: 2/46 cut-off events. [2022-11-02 20:35:34,947 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:35:34,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:35:34,947 INFO L208 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] [2022-11-02 20:35:34,947 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:35:34,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:34,948 INFO L85 PathProgramCache]: Analyzing trace with hash -980089482, now seen corresponding path program 1 times [2022-11-02 20:35:34,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:34,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283845208] [2022-11-02 20:35:34,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:34,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:35,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:35,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:35,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283845208] [2022-11-02 20:35:35,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283845208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:35,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:35,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:35:35,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802291192] [2022-11-02 20:35:35,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:35,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:35:35,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:35,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:35:35,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:35:35,156 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 89 [2022-11-02 20:35:35,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 74 transitions, 163 flow. Second operand has 5 states, 5 states have (on average 69.4) internal successors, (347), 5 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:35,157 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:35:35,157 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 89 [2022-11-02 20:35:35,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:35:35,413 INFO L130 PetriNetUnfolder]: 97/386 cut-off events. [2022-11-02 20:35:35,413 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2022-11-02 20:35:35,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 659 conditions, 386 events. 97/386 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2110 event pairs, 6 based on Foata normal form. 95/459 useless extension candidates. Maximal degree in co-relation 625. Up to 55 conditions per place. [2022-11-02 20:35:35,419 INFO L137 encePairwiseOnDemand]: 80/89 looper letters, 42 selfloop transitions, 11 changer transitions 0/110 dead transitions. [2022-11-02 20:35:35,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 110 transitions, 377 flow [2022-11-02 20:35:35,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:35:35,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-02 20:35:35,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 607 transitions. [2022-11-02 20:35:35,422 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8525280898876404 [2022-11-02 20:35:35,422 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 607 transitions. [2022-11-02 20:35:35,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 607 transitions. [2022-11-02 20:35:35,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:35:35,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 607 transitions. [2022-11-02 20:35:35,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 75.875) internal successors, (607), 8 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:35,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 89.0) internal successors, (801), 9 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:35,427 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 89.0) internal successors, (801), 9 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:35,428 INFO L175 Difference]: Start difference. First operand has 80 places, 74 transitions, 163 flow. Second operand 8 states and 607 transitions. [2022-11-02 20:35:35,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 110 transitions, 377 flow [2022-11-02 20:35:35,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 110 transitions, 374 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-02 20:35:35,431 INFO L231 Difference]: Finished difference. Result has 90 places, 81 transitions, 236 flow [2022-11-02 20:35:35,431 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=236, PETRI_PLACES=90, PETRI_TRANSITIONS=81} [2022-11-02 20:35:35,432 INFO L287 CegarLoopForPetriNet]: 80 programPoint places, 10 predicate places. [2022-11-02 20:35:35,432 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 81 transitions, 236 flow [2022-11-02 20:35:35,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.4) internal successors, (347), 5 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:35,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:35:35,433 INFO L208 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] [2022-11-02 20:35:35,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:35:35,434 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:35:35,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:35,434 INFO L85 PathProgramCache]: Analyzing trace with hash 692131209, now seen corresponding path program 1 times [2022-11-02 20:35:35,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:35,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723255225] [2022-11-02 20:35:35,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:35,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:35,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:35,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:35,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:35,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723255225] [2022-11-02 20:35:35,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723255225] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:35,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:35,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:35:35,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981208240] [2022-11-02 20:35:35,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:35,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:35:35,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:35,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:35:35,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:35:35,685 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 89 [2022-11-02 20:35:35,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 81 transitions, 236 flow. Second operand has 7 states, 7 states have (on average 68.57142857142857) internal successors, (480), 7 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:35,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:35:35,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 89 [2022-11-02 20:35:35,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:35:36,137 INFO L130 PetriNetUnfolder]: 131/767 cut-off events. [2022-11-02 20:35:36,138 INFO L131 PetriNetUnfolder]: For 342/342 co-relation queries the response was YES. [2022-11-02 20:35:36,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1439 conditions, 767 events. 131/767 cut-off events. For 342/342 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5642 event pairs, 20 based on Foata normal form. 5/739 useless extension candidates. Maximal degree in co-relation 1399. Up to 56 conditions per place. [2022-11-02 20:35:36,147 INFO L137 encePairwiseOnDemand]: 81/89 looper letters, 61 selfloop transitions, 33 changer transitions 0/150 dead transitions. [2022-11-02 20:35:36,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 150 transitions, 727 flow [2022-11-02 20:35:36,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:35:36,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-02 20:35:36,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1365 transitions. [2022-11-02 20:35:36,152 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8072146658781786 [2022-11-02 20:35:36,153 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1365 transitions. [2022-11-02 20:35:36,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1365 transitions. [2022-11-02 20:35:36,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:35:36,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1365 transitions. [2022-11-02 20:35:36,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 71.84210526315789) internal successors, (1365), 19 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:36,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 89.0) internal successors, (1780), 20 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:36,163 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 89.0) internal successors, (1780), 20 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:36,163 INFO L175 Difference]: Start difference. First operand has 90 places, 81 transitions, 236 flow. Second operand 19 states and 1365 transitions. [2022-11-02 20:35:36,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 150 transitions, 727 flow [2022-11-02 20:35:36,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 150 transitions, 727 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:35:36,170 INFO L231 Difference]: Finished difference. Result has 118 places, 104 transitions, 498 flow [2022-11-02 20:35:36,171 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=498, PETRI_PLACES=118, PETRI_TRANSITIONS=104} [2022-11-02 20:35:36,172 INFO L287 CegarLoopForPetriNet]: 80 programPoint places, 38 predicate places. [2022-11-02 20:35:36,172 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 104 transitions, 498 flow [2022-11-02 20:35:36,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.57142857142857) internal successors, (480), 7 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:36,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:35:36,173 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:36,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:35:36,174 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:35:36,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:36,174 INFO L85 PathProgramCache]: Analyzing trace with hash -196327125, now seen corresponding path program 1 times [2022-11-02 20:35:36,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:36,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245115475] [2022-11-02 20:35:36,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:36,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:35:36,195 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:35:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:35:36,214 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:35:36,215 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:35:36,215 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-11-02 20:35:36,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-11-02 20:35:36,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-11-02 20:35:36,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-11-02 20:35:36,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-11-02 20:35:36,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:35:36,217 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-02 20:35:36,217 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:35:36,218 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-02 20:35:36,241 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:35:36,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 110 transitions, 262 flow [2022-11-02 20:35:36,260 INFO L130 PetriNetUnfolder]: 5/133 cut-off events. [2022-11-02 20:35:36,260 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-02 20:35:36,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 133 events. 5/133 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 186 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 147. Up to 8 conditions per place. [2022-11-02 20:35:36,261 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 110 transitions, 262 flow [2022-11-02 20:35:36,263 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 81 transitions, 186 flow [2022-11-02 20:35:36,264 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:35:36,265 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;@28379278, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:35:36,265 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-02 20:35:36,270 INFO L130 PetriNetUnfolder]: 1/43 cut-off events. [2022-11-02 20:35:36,270 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:35:36,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:35:36,271 INFO L208 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] [2022-11-02 20:35:36,271 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-02 20:35:36,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:36,272 INFO L85 PathProgramCache]: Analyzing trace with hash 980719107, now seen corresponding path program 1 times [2022-11-02 20:35:36,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:36,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087502633] [2022-11-02 20:35:36,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:36,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:36,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:36,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:36,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087502633] [2022-11-02 20:35:36,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087502633] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:36,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:36,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:35:36,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729238877] [2022-11-02 20:35:36,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:36,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:35:36,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:36,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:35:36,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:35:36,354 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 110 [2022-11-02 20:35:36,354 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 81 transitions, 186 flow. Second operand has 5 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:36,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:35:36,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 110 [2022-11-02 20:35:36,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:35:36,724 INFO L130 PetriNetUnfolder]: 541/1578 cut-off events. [2022-11-02 20:35:36,725 INFO L131 PetriNetUnfolder]: For 504/504 co-relation queries the response was YES. [2022-11-02 20:35:36,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2822 conditions, 1578 events. 541/1578 cut-off events. For 504/504 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 11804 event pairs, 184 based on Foata normal form. 274/1742 useless extension candidates. Maximal degree in co-relation 2787. Up to 318 conditions per place. [2022-11-02 20:35:36,746 INFO L137 encePairwiseOnDemand]: 100/110 looper letters, 60 selfloop transitions, 14 changer transitions 0/135 dead transitions. [2022-11-02 20:35:36,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 135 transitions, 520 flow [2022-11-02 20:35:36,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:35:36,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-02 20:35:36,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 740 transitions. [2022-11-02 20:35:36,749 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8409090909090909 [2022-11-02 20:35:36,749 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 740 transitions. [2022-11-02 20:35:36,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 740 transitions. [2022-11-02 20:35:36,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:35:36,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 740 transitions. [2022-11-02 20:35:36,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 92.5) internal successors, (740), 8 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:36,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 110.0) internal successors, (990), 9 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:36,755 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 110.0) internal successors, (990), 9 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:36,755 INFO L175 Difference]: Start difference. First operand has 89 places, 81 transitions, 186 flow. Second operand 8 states and 740 transitions. [2022-11-02 20:35:36,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 135 transitions, 520 flow [2022-11-02 20:35:36,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 135 transitions, 501 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-11-02 20:35:36,761 INFO L231 Difference]: Finished difference. Result has 99 places, 91 transitions, 278 flow [2022-11-02 20:35:36,762 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=278, PETRI_PLACES=99, PETRI_TRANSITIONS=91} [2022-11-02 20:35:36,764 INFO L287 CegarLoopForPetriNet]: 89 programPoint places, 10 predicate places. [2022-11-02 20:35:36,766 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 91 transitions, 278 flow [2022-11-02 20:35:36,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:36,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:35:36,767 INFO L208 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] [2022-11-02 20:35:36,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:35:36,767 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-02 20:35:36,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:36,768 INFO L85 PathProgramCache]: Analyzing trace with hash 941136163, now seen corresponding path program 1 times [2022-11-02 20:35:36,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:36,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389999409] [2022-11-02 20:35:36,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:36,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:36,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:36,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:36,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389999409] [2022-11-02 20:35:36,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389999409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:36,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:36,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:35:36,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593052611] [2022-11-02 20:35:36,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:36,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:35:36,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:36,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:35:36,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:35:36,937 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 110 [2022-11-02 20:35:36,938 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 91 transitions, 278 flow. Second operand has 7 states, 7 states have (on average 82.57142857142857) internal successors, (578), 7 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:36,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:35:36,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 110 [2022-11-02 20:35:36,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:35:37,955 INFO L130 PetriNetUnfolder]: 921/3317 cut-off events. [2022-11-02 20:35:37,956 INFO L131 PetriNetUnfolder]: For 2190/2190 co-relation queries the response was YES. [2022-11-02 20:35:37,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7098 conditions, 3317 events. 921/3317 cut-off events. For 2190/2190 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 32127 event pairs, 206 based on Foata normal form. 19/3198 useless extension candidates. Maximal degree in co-relation 7057. Up to 415 conditions per place. [2022-11-02 20:35:38,007 INFO L137 encePairwiseOnDemand]: 101/110 looper letters, 122 selfloop transitions, 44 changer transitions 0/226 dead transitions. [2022-11-02 20:35:38,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 226 transitions, 1261 flow [2022-11-02 20:35:38,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:35:38,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-02 20:35:38,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1703 transitions. [2022-11-02 20:35:38,013 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8148325358851675 [2022-11-02 20:35:38,014 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1703 transitions. [2022-11-02 20:35:38,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1703 transitions. [2022-11-02 20:35:38,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:35:38,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1703 transitions. [2022-11-02 20:35:38,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 89.63157894736842) internal successors, (1703), 19 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:38,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 110.0) internal successors, (2200), 20 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:38,030 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 110.0) internal successors, (2200), 20 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:38,031 INFO L175 Difference]: Start difference. First operand has 99 places, 91 transitions, 278 flow. Second operand 19 states and 1703 transitions. [2022-11-02 20:35:38,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 226 transitions, 1261 flow [2022-11-02 20:35:38,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 226 transitions, 1261 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:35:38,048 INFO L231 Difference]: Finished difference. Result has 128 places, 123 transitions, 661 flow [2022-11-02 20:35:38,049 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=661, PETRI_PLACES=128, PETRI_TRANSITIONS=123} [2022-11-02 20:35:38,051 INFO L287 CegarLoopForPetriNet]: 89 programPoint places, 39 predicate places. [2022-11-02 20:35:38,051 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 123 transitions, 661 flow [2022-11-02 20:35:38,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.57142857142857) internal successors, (578), 7 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:38,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:35:38,056 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:38,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:35:38,059 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-02 20:35:38,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:38,060 INFO L85 PathProgramCache]: Analyzing trace with hash -2121700525, now seen corresponding path program 1 times [2022-11-02 20:35:38,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:38,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746090625] [2022-11-02 20:35:38,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:38,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:38,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:38,254 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:35:38,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:38,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746090625] [2022-11-02 20:35:38,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746090625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:38,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:38,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:35:38,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704433319] [2022-11-02 20:35:38,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:38,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:35:38,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:38,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:35:38,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:35:38,264 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 110 [2022-11-02 20:35:38,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 123 transitions, 661 flow. Second operand has 7 states, 7 states have (on average 82.71428571428571) internal successors, (579), 7 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:38,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:35:38,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 110 [2022-11-02 20:35:38,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:35:39,399 INFO L130 PetriNetUnfolder]: 1144/3944 cut-off events. [2022-11-02 20:35:39,400 INFO L131 PetriNetUnfolder]: For 10849/10855 co-relation queries the response was YES. [2022-11-02 20:35:39,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12044 conditions, 3944 events. 1144/3944 cut-off events. For 10849/10855 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 40657 event pairs, 281 based on Foata normal form. 33/3859 useless extension candidates. Maximal degree in co-relation 11990. Up to 636 conditions per place. [2022-11-02 20:35:39,520 INFO L137 encePairwiseOnDemand]: 101/110 looper letters, 163 selfloop transitions, 86 changer transitions 0/309 dead transitions. [2022-11-02 20:35:39,520 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 309 transitions, 2759 flow [2022-11-02 20:35:39,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:35:39,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-02 20:35:39,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1701 transitions. [2022-11-02 20:35:39,526 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8138755980861244 [2022-11-02 20:35:39,526 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1701 transitions. [2022-11-02 20:35:39,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1701 transitions. [2022-11-02 20:35:39,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:35:39,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1701 transitions. [2022-11-02 20:35:39,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 89.52631578947368) internal successors, (1701), 19 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:39,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 110.0) internal successors, (2200), 20 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:39,539 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 110.0) internal successors, (2200), 20 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:39,539 INFO L175 Difference]: Start difference. First operand has 128 places, 123 transitions, 661 flow. Second operand 19 states and 1701 transitions. [2022-11-02 20:35:39,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 309 transitions, 2759 flow [2022-11-02 20:35:39,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 309 transitions, 2552 flow, removed 83 selfloop flow, removed 3 redundant places. [2022-11-02 20:35:39,645 INFO L231 Difference]: Finished difference. Result has 154 places, 186 transitions, 1550 flow [2022-11-02 20:35:39,646 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1550, PETRI_PLACES=154, PETRI_TRANSITIONS=186} [2022-11-02 20:35:39,647 INFO L287 CegarLoopForPetriNet]: 89 programPoint places, 65 predicate places. [2022-11-02 20:35:39,647 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 186 transitions, 1550 flow [2022-11-02 20:35:39,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.71428571428571) internal successors, (579), 7 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:39,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:35:39,648 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:39,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:35:39,648 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-02 20:35:39,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:39,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1557261265, now seen corresponding path program 1 times [2022-11-02 20:35:39,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:39,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425360107] [2022-11-02 20:35:39,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:39,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:39,845 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:39,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:39,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425360107] [2022-11-02 20:35:39,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425360107] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:35:39,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592467575] [2022-11-02 20:35:39,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:39,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:35:39,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f649b71-1dd8-474e-b905-75ba5c2b67c1/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:35:39,849 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f649b71-1dd8-474e-b905-75ba5c2b67c1/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:35:39,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f649b71-1dd8-474e-b905-75ba5c2b67c1/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:35:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:39,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:35:39,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:35:40,213 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:40,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:35:40,391 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:40,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592467575] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:35:40,391 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:35:40,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-02 20:35:40,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577782340] [2022-11-02 20:35:40,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:35:40,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:35:40,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:40,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:35:40,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:35:40,396 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 110 [2022-11-02 20:35:40,398 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 186 transitions, 1550 flow. Second operand has 18 states, 18 states have (on average 82.0) internal successors, (1476), 18 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:40,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:35:40,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 110 [2022-11-02 20:35:40,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:35:42,951 INFO L130 PetriNetUnfolder]: 1451/5580 cut-off events. [2022-11-02 20:35:42,951 INFO L131 PetriNetUnfolder]: For 24278/24278 co-relation queries the response was YES. [2022-11-02 20:35:43,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17928 conditions, 5580 events. 1451/5580 cut-off events. For 24278/24278 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 63183 event pairs, 209 based on Foata normal form. 10/5396 useless extension candidates. Maximal degree in co-relation 17862. Up to 597 conditions per place. [2022-11-02 20:35:43,070 INFO L137 encePairwiseOnDemand]: 100/110 looper letters, 230 selfloop transitions, 192 changer transitions 0/481 dead transitions. [2022-11-02 20:35:43,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 481 transitions, 5027 flow [2022-11-02 20:35:43,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-11-02 20:35:43,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2022-11-02 20:35:43,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 4913 transitions. [2022-11-02 20:35:43,083 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7835725677830941 [2022-11-02 20:35:43,083 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 4913 transitions. [2022-11-02 20:35:43,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 4913 transitions. [2022-11-02 20:35:43,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:35:43,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 4913 transitions. [2022-11-02 20:35:43,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 86.19298245614036) internal successors, (4913), 57 states have internal predecessors, (4913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:43,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 110.0) internal successors, (6380), 58 states have internal predecessors, (6380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:43,120 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 110.0) internal successors, (6380), 58 states have internal predecessors, (6380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:43,120 INFO L175 Difference]: Start difference. First operand has 154 places, 186 transitions, 1550 flow. Second operand 57 states and 4913 transitions. [2022-11-02 20:35:43,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 481 transitions, 5027 flow [2022-11-02 20:35:43,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 481 transitions, 4763 flow, removed 132 selfloop flow, removed 0 redundant places. [2022-11-02 20:35:43,301 INFO L231 Difference]: Finished difference. Result has 232 places, 282 transitions, 3258 flow [2022-11-02 20:35:43,302 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=1420, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=3258, PETRI_PLACES=232, PETRI_TRANSITIONS=282} [2022-11-02 20:35:43,303 INFO L287 CegarLoopForPetriNet]: 89 programPoint places, 143 predicate places. [2022-11-02 20:35:43,304 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 282 transitions, 3258 flow [2022-11-02 20:35:43,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 82.0) internal successors, (1476), 18 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:43,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:35:43,305 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:43,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f649b71-1dd8-474e-b905-75ba5c2b67c1/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:35:43,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f649b71-1dd8-474e-b905-75ba5c2b67c1/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-02 20:35:43,519 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-02 20:35:43,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:43,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1737120457, now seen corresponding path program 1 times [2022-11-02 20:35:43,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:43,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902393466] [2022-11-02 20:35:43,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:43,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:35:43,553 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:35:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:35:43,588 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:35:43,588 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:35:43,589 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-11-02 20:35:43,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-11-02 20:35:43,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-11-02 20:35:43,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-11-02 20:35:43,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-11-02 20:35:43,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-11-02 20:35:43,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:35:43,590 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-02 20:35:43,591 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:35:43,591 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-02 20:35:43,623 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:35:43,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 131 transitions, 326 flow [2022-11-02 20:35:43,648 INFO L130 PetriNetUnfolder]: 6/159 cut-off events. [2022-11-02 20:35:43,648 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-02 20:35:43,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 159 events. 6/159 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 232 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 179. Up to 10 conditions per place. [2022-11-02 20:35:43,650 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 131 transitions, 326 flow [2022-11-02 20:35:43,651 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 88 transitions, 211 flow [2022-11-02 20:35:43,652 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:35:43,653 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;@28379278, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:35:43,653 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-02 20:35:43,658 INFO L130 PetriNetUnfolder]: 2/46 cut-off events. [2022-11-02 20:35:43,658 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:35:43,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:35:43,659 INFO L208 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] [2022-11-02 20:35:43,659 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-02 20:35:43,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:43,660 INFO L85 PathProgramCache]: Analyzing trace with hash -2005294478, now seen corresponding path program 1 times [2022-11-02 20:35:43,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:43,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913210712] [2022-11-02 20:35:43,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:43,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:43,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:43,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:43,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913210712] [2022-11-02 20:35:43,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913210712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:43,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:43,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:35:43,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706610424] [2022-11-02 20:35:43,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:43,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:35:43,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:43,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:35:43,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:35:43,846 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 131 [2022-11-02 20:35:43,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 88 transitions, 211 flow. Second operand has 5 states, 5 states have (on average 97.4) internal successors, (487), 5 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:43,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:35:43,847 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 131 [2022-11-02 20:35:43,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:35:44,865 INFO L130 PetriNetUnfolder]: 2465/5719 cut-off events. [2022-11-02 20:35:44,866 INFO L131 PetriNetUnfolder]: For 2918/2918 co-relation queries the response was YES. [2022-11-02 20:35:44,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10838 conditions, 5719 events. 2465/5719 cut-off events. For 2918/2918 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 50360 event pairs, 734 based on Foata normal form. 1002/6427 useless extension candidates. Maximal degree in co-relation 10802. Up to 1465 conditions per place. [2022-11-02 20:35:44,938 INFO L137 encePairwiseOnDemand]: 120/131 looper letters, 78 selfloop transitions, 17 changer transitions 0/160 dead transitions. [2022-11-02 20:35:44,938 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 160 transitions, 677 flow [2022-11-02 20:35:44,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:35:44,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-02 20:35:44,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 873 transitions. [2022-11-02 20:35:44,940 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8330152671755725 [2022-11-02 20:35:44,940 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 873 transitions. [2022-11-02 20:35:44,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 873 transitions. [2022-11-02 20:35:44,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:35:44,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 873 transitions. [2022-11-02 20:35:44,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 109.125) internal successors, (873), 8 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:44,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 131.0) internal successors, (1179), 9 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:44,945 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 131.0) internal successors, (1179), 9 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:44,945 INFO L175 Difference]: Start difference. First operand has 98 places, 88 transitions, 211 flow. Second operand 8 states and 873 transitions. [2022-11-02 20:35:44,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 160 transitions, 677 flow [2022-11-02 20:35:44,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 160 transitions, 628 flow, removed 24 selfloop flow, removed 1 redundant places. [2022-11-02 20:35:44,949 INFO L231 Difference]: Finished difference. Result has 108 places, 101 transitions, 320 flow [2022-11-02 20:35:44,949 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=320, PETRI_PLACES=108, PETRI_TRANSITIONS=101} [2022-11-02 20:35:44,952 INFO L287 CegarLoopForPetriNet]: 98 programPoint places, 10 predicate places. [2022-11-02 20:35:44,952 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 101 transitions, 320 flow [2022-11-02 20:35:44,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.4) internal successors, (487), 5 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:44,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:35:44,953 INFO L208 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] [2022-11-02 20:35:44,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:35:44,953 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-02 20:35:44,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:44,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1225581279, now seen corresponding path program 1 times [2022-11-02 20:35:44,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:44,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012883896] [2022-11-02 20:35:44,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:44,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:45,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:45,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:45,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012883896] [2022-11-02 20:35:45,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012883896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:45,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:45,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:35:45,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770685096] [2022-11-02 20:35:45,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:45,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:35:45,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:45,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:35:45,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:35:45,080 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 131 [2022-11-02 20:35:45,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 101 transitions, 320 flow. Second operand has 7 states, 7 states have (on average 96.57142857142857) internal successors, (676), 7 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:45,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:35:45,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 131 [2022-11-02 20:35:45,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:35:47,529 INFO L130 PetriNetUnfolder]: 4859/11815 cut-off events. [2022-11-02 20:35:47,529 INFO L131 PetriNetUnfolder]: For 9938/9938 co-relation queries the response was YES. [2022-11-02 20:35:47,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29439 conditions, 11815 events. 4859/11815 cut-off events. For 9938/9938 co-relation queries the response was YES. Maximal size of possible extension queue 760. Compared 123145 event pairs, 1050 based on Foata normal form. 65/11505 useless extension candidates. Maximal degree in co-relation 29397. Up to 2287 conditions per place. [2022-11-02 20:35:47,714 INFO L137 encePairwiseOnDemand]: 121/131 looper letters, 166 selfloop transitions, 54 changer transitions 0/284 dead transitions. [2022-11-02 20:35:47,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 284 transitions, 1669 flow [2022-11-02 20:35:47,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:35:47,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-02 20:35:47,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2023 transitions. [2022-11-02 20:35:47,721 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8127762153475291 [2022-11-02 20:35:47,721 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2023 transitions. [2022-11-02 20:35:47,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2023 transitions. [2022-11-02 20:35:47,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:35:47,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2023 transitions. [2022-11-02 20:35:47,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 106.47368421052632) internal successors, (2023), 19 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:47,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 131.0) internal successors, (2620), 20 states have internal predecessors, (2620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:47,732 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 131.0) internal successors, (2620), 20 states have internal predecessors, (2620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:47,732 INFO L175 Difference]: Start difference. First operand has 108 places, 101 transitions, 320 flow. Second operand 19 states and 2023 transitions. [2022-11-02 20:35:47,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 284 transitions, 1669 flow [2022-11-02 20:35:47,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 284 transitions, 1669 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:35:47,767 INFO L231 Difference]: Finished difference. Result has 137 places, 140 transitions, 794 flow [2022-11-02 20:35:47,768 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=794, PETRI_PLACES=137, PETRI_TRANSITIONS=140} [2022-11-02 20:35:47,769 INFO L287 CegarLoopForPetriNet]: 98 programPoint places, 39 predicate places. [2022-11-02 20:35:47,769 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 140 transitions, 794 flow [2022-11-02 20:35:47,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 96.57142857142857) internal successors, (676), 7 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:47,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:35:47,770 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:47,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:35:47,771 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-02 20:35:47,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:47,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1933405436, now seen corresponding path program 1 times [2022-11-02 20:35:47,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:47,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089195962] [2022-11-02 20:35:47,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:47,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:47,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:47,917 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:35:47,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:47,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089195962] [2022-11-02 20:35:47,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089195962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:47,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:47,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:35:47,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363941386] [2022-11-02 20:35:47,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:47,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:35:47,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:47,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:35:47,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:35:47,922 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 131 [2022-11-02 20:35:47,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 140 transitions, 794 flow. Second operand has 7 states, 7 states have (on average 96.71428571428571) internal successors, (677), 7 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:47,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:35:47,924 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 131 [2022-11-02 20:35:47,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:35:52,095 INFO L130 PetriNetUnfolder]: 7508/19212 cut-off events. [2022-11-02 20:35:52,095 INFO L131 PetriNetUnfolder]: For 62206/62206 co-relation queries the response was YES. [2022-11-02 20:35:52,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65870 conditions, 19212 events. 7508/19212 cut-off events. For 62206/62206 co-relation queries the response was YES. Maximal size of possible extension queue 1446. Compared 228445 event pairs, 1832 based on Foata normal form. 108/18764 useless extension candidates. Maximal degree in co-relation 65815. Up to 4037 conditions per place. [2022-11-02 20:35:52,432 INFO L137 encePairwiseOnDemand]: 121/131 looper letters, 226 selfloop transitions, 102 changer transitions 0/392 dead transitions. [2022-11-02 20:35:52,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 392 transitions, 3611 flow [2022-11-02 20:35:52,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:35:52,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-02 20:35:52,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2021 transitions. [2022-11-02 20:35:52,436 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8119726797910808 [2022-11-02 20:35:52,437 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2021 transitions. [2022-11-02 20:35:52,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2021 transitions. [2022-11-02 20:35:52,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:35:52,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2021 transitions. [2022-11-02 20:35:52,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 106.36842105263158) internal successors, (2021), 19 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:52,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 131.0) internal successors, (2620), 20 states have internal predecessors, (2620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:52,465 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 131.0) internal successors, (2620), 20 states have internal predecessors, (2620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:52,465 INFO L175 Difference]: Start difference. First operand has 137 places, 140 transitions, 794 flow. Second operand 19 states and 2021 transitions. [2022-11-02 20:35:52,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 392 transitions, 3611 flow [2022-11-02 20:35:53,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 392 transitions, 3286 flow, removed 136 selfloop flow, removed 3 redundant places. [2022-11-02 20:35:53,090 INFO L231 Difference]: Finished difference. Result has 163 places, 213 transitions, 1825 flow [2022-11-02 20:35:53,091 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1825, PETRI_PLACES=163, PETRI_TRANSITIONS=213} [2022-11-02 20:35:53,091 INFO L287 CegarLoopForPetriNet]: 98 programPoint places, 65 predicate places. [2022-11-02 20:35:53,092 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 213 transitions, 1825 flow [2022-11-02 20:35:53,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 96.71428571428571) internal successors, (677), 7 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:53,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:35:53,092 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:53,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:35:53,093 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-02 20:35:53,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:53,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1164470650, now seen corresponding path program 1 times [2022-11-02 20:35:53,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:53,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508235397] [2022-11-02 20:35:53,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:53,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:53,264 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:35:53,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:53,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508235397] [2022-11-02 20:35:53,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508235397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:53,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:53,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:35:53,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677224129] [2022-11-02 20:35:53,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:53,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:35:53,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:53,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:35:53,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:35:53,269 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 131 [2022-11-02 20:35:53,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 213 transitions, 1825 flow. Second operand has 9 states, 9 states have (on average 95.66666666666667) internal successors, (861), 9 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:53,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:35:53,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 131 [2022-11-02 20:35:53,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:36:00,207 INFO L130 PetriNetUnfolder]: 9460/26062 cut-off events. [2022-11-02 20:36:00,207 INFO L131 PetriNetUnfolder]: For 156017/156017 co-relation queries the response was YES. [2022-11-02 20:36:00,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97483 conditions, 26062 events. 9460/26062 cut-off events. For 156017/156017 co-relation queries the response was YES. Maximal size of possible extension queue 1833. Compared 329075 event pairs, 1908 based on Foata normal form. 19/25135 useless extension candidates. Maximal degree in co-relation 97416. Up to 4102 conditions per place. [2022-11-02 20:36:00,786 INFO L137 encePairwiseOnDemand]: 120/131 looper letters, 345 selfloop transitions, 204 changer transitions 0/612 dead transitions. [2022-11-02 20:36:00,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 612 transitions, 6450 flow [2022-11-02 20:36:00,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-02 20:36:00,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-02 20:36:00,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 4707 transitions. [2022-11-02 20:36:00,796 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7984732824427481 [2022-11-02 20:36:00,797 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 4707 transitions. [2022-11-02 20:36:00,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 4707 transitions. [2022-11-02 20:36:00,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:36:00,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 4707 transitions. [2022-11-02 20:36:00,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 104.6) internal successors, (4707), 45 states have internal predecessors, (4707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:00,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 131.0) internal successors, (6026), 46 states have internal predecessors, (6026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:00,823 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 131.0) internal successors, (6026), 46 states have internal predecessors, (6026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:00,823 INFO L175 Difference]: Start difference. First operand has 163 places, 213 transitions, 1825 flow. Second operand 45 states and 4707 transitions. [2022-11-02 20:36:00,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 612 transitions, 6450 flow [2022-11-02 20:36:02,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 612 transitions, 6104 flow, removed 173 selfloop flow, removed 0 redundant places. [2022-11-02 20:36:02,218 INFO L231 Difference]: Finished difference. Result has 219 places, 300 transitions, 3326 flow [2022-11-02 20:36:02,219 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=1645, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=3326, PETRI_PLACES=219, PETRI_TRANSITIONS=300} [2022-11-02 20:36:02,219 INFO L287 CegarLoopForPetriNet]: 98 programPoint places, 121 predicate places. [2022-11-02 20:36:02,219 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 300 transitions, 3326 flow [2022-11-02 20:36:02,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 95.66666666666667) internal successors, (861), 9 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:02,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:36:02,220 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:02,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:36:02,221 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-02 20:36:02,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:02,221 INFO L85 PathProgramCache]: Analyzing trace with hash -147506822, now seen corresponding path program 2 times [2022-11-02 20:36:02,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:02,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232872232] [2022-11-02 20:36:02,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:02,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:02,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:02,348 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:36:02,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:02,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232872232] [2022-11-02 20:36:02,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232872232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:02,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:02,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:36:02,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257695484] [2022-11-02 20:36:02,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:02,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:36:02,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:02,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:36:02,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:36:02,352 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 131 [2022-11-02 20:36:02,353 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 300 transitions, 3326 flow. Second operand has 9 states, 9 states have (on average 95.66666666666667) internal successors, (861), 9 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:02,353 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:36:02,353 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 131 [2022-11-02 20:36:02,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:36:10,416 INFO L130 PetriNetUnfolder]: 9851/26613 cut-off events. [2022-11-02 20:36:10,416 INFO L131 PetriNetUnfolder]: For 244938/244938 co-relation queries the response was YES. [2022-11-02 20:36:10,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113823 conditions, 26613 events. 9851/26613 cut-off events. For 244938/244938 co-relation queries the response was YES. Maximal size of possible extension queue 1966. Compared 337851 event pairs, 1512 based on Foata normal form. 19/25889 useless extension candidates. Maximal degree in co-relation 113742. Up to 3803 conditions per place. [2022-11-02 20:36:11,048 INFO L137 encePairwiseOnDemand]: 120/131 looper letters, 366 selfloop transitions, 240 changer transitions 0/669 dead transitions. [2022-11-02 20:36:11,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 669 transitions, 8225 flow [2022-11-02 20:36:11,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-02 20:36:11,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-02 20:36:11,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 4707 transitions. [2022-11-02 20:36:11,075 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7984732824427481 [2022-11-02 20:36:11,075 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 4707 transitions. [2022-11-02 20:36:11,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 4707 transitions. [2022-11-02 20:36:11,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:36:11,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 4707 transitions. [2022-11-02 20:36:11,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 104.6) internal successors, (4707), 45 states have internal predecessors, (4707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:11,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 131.0) internal successors, (6026), 46 states have internal predecessors, (6026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:11,108 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 131.0) internal successors, (6026), 46 states have internal predecessors, (6026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:11,109 INFO L175 Difference]: Start difference. First operand has 219 places, 300 transitions, 3326 flow. Second operand 45 states and 4707 transitions. [2022-11-02 20:36:11,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 669 transitions, 8225 flow [2022-11-02 20:36:13,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 669 transitions, 7737 flow, removed 179 selfloop flow, removed 12 redundant places. [2022-11-02 20:36:13,998 INFO L231 Difference]: Finished difference. Result has 263 places, 355 transitions, 4479 flow [2022-11-02 20:36:13,999 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=2956, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=4479, PETRI_PLACES=263, PETRI_TRANSITIONS=355} [2022-11-02 20:36:13,999 INFO L287 CegarLoopForPetriNet]: 98 programPoint places, 165 predicate places. [2022-11-02 20:36:13,999 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 355 transitions, 4479 flow [2022-11-02 20:36:13,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 95.66666666666667) internal successors, (861), 9 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:14,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:36:14,000 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:14,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 20:36:14,000 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-02 20:36:14,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:14,001 INFO L85 PathProgramCache]: Analyzing trace with hash -701023176, now seen corresponding path program 1 times [2022-11-02 20:36:14,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:14,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211487212] [2022-11-02 20:36:14,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:14,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:14,131 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-02 20:36:14,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:14,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211487212] [2022-11-02 20:36:14,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211487212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:14,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:14,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:36:14,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495436532] [2022-11-02 20:36:14,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:14,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:36:14,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:14,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:36:14,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:36:14,135 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 131 [2022-11-02 20:36:14,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 355 transitions, 4479 flow. Second operand has 7 states, 7 states have (on average 96.85714285714286) internal successors, (678), 7 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:14,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:36:14,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 131 [2022-11-02 20:36:14,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:36:24,424 INFO L130 PetriNetUnfolder]: 12295/32712 cut-off events. [2022-11-02 20:36:24,424 INFO L131 PetriNetUnfolder]: For 521465/521465 co-relation queries the response was YES. [2022-11-02 20:36:25,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178855 conditions, 32712 events. 12295/32712 cut-off events. For 521465/521465 co-relation queries the response was YES. Maximal size of possible extension queue 2728. Compared 436859 event pairs, 2567 based on Foata normal form. 201/32550 useless extension candidates. Maximal degree in co-relation 178762. Up to 5567 conditions per place. [2022-11-02 20:36:25,322 INFO L137 encePairwiseOnDemand]: 121/131 looper letters, 673 selfloop transitions, 317 changer transitions 0/1054 dead transitions. [2022-11-02 20:36:25,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 1054 transitions, 17846 flow [2022-11-02 20:36:25,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:36:25,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-02 20:36:25,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2010 transitions. [2022-11-02 20:36:25,326 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8075532342306148 [2022-11-02 20:36:25,327 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2010 transitions. [2022-11-02 20:36:25,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2010 transitions. [2022-11-02 20:36:25,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:36:25,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2010 transitions. [2022-11-02 20:36:25,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 105.78947368421052) internal successors, (2010), 19 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:25,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 131.0) internal successors, (2620), 20 states have internal predecessors, (2620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:25,336 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 131.0) internal successors, (2620), 20 states have internal predecessors, (2620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:25,336 INFO L175 Difference]: Start difference. First operand has 263 places, 355 transitions, 4479 flow. Second operand 19 states and 2010 transitions. [2022-11-02 20:36:25,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 1054 transitions, 17846 flow [2022-11-02 20:36:37,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 1054 transitions, 16524 flow, removed 489 selfloop flow, removed 18 redundant places. [2022-11-02 20:36:37,575 INFO L231 Difference]: Finished difference. Result has 274 places, 605 transitions, 9755 flow [2022-11-02 20:36:37,576 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=4089, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=9755, PETRI_PLACES=274, PETRI_TRANSITIONS=605} [2022-11-02 20:36:37,576 INFO L287 CegarLoopForPetriNet]: 98 programPoint places, 176 predicate places. [2022-11-02 20:36:37,577 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 605 transitions, 9755 flow [2022-11-02 20:36:37,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 96.85714285714286) internal successors, (678), 7 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:37,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:36:37,577 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:37,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 20:36:37,577 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-02 20:36:37,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:37,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1094186230, now seen corresponding path program 1 times [2022-11-02 20:36:37,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:37,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144174638] [2022-11-02 20:36:37,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:37,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:37,731 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-02 20:36:37,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:37,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144174638] [2022-11-02 20:36:37,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144174638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:37,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:37,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:36:37,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002298826] [2022-11-02 20:36:37,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:37,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:36:37,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:37,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:36:37,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:36:37,735 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 131 [2022-11-02 20:36:37,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 605 transitions, 9755 flow. Second operand has 9 states, 9 states have (on average 95.77777777777777) internal successors, (862), 9 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:37,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:36:37,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 131 [2022-11-02 20:36:37,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:36:55,460 INFO L130 PetriNetUnfolder]: 15039/41518 cut-off events. [2022-11-02 20:36:55,461 INFO L131 PetriNetUnfolder]: For 815694/815694 co-relation queries the response was YES. [2022-11-02 20:36:56,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233592 conditions, 41518 events. 15039/41518 cut-off events. For 815694/815694 co-relation queries the response was YES. Maximal size of possible extension queue 3276. Compared 577935 event pairs, 2201 based on Foata normal form. 43/40887 useless extension candidates. Maximal degree in co-relation 233488. Up to 6142 conditions per place. [2022-11-02 20:36:57,021 INFO L137 encePairwiseOnDemand]: 120/131 looper letters, 637 selfloop transitions, 604 changer transitions 0/1304 dead transitions. [2022-11-02 20:36:57,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 1304 transitions, 23635 flow [2022-11-02 20:36:57,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-02 20:36:57,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-02 20:36:57,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 4697 transitions. [2022-11-02 20:36:57,028 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.796776929601357 [2022-11-02 20:36:57,028 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 4697 transitions. [2022-11-02 20:36:57,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 4697 transitions. [2022-11-02 20:36:57,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:36:57,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 4697 transitions. [2022-11-02 20:36:57,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 104.37777777777778) internal successors, (4697), 45 states have internal predecessors, (4697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:57,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 131.0) internal successors, (6026), 46 states have internal predecessors, (6026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:57,048 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 131.0) internal successors, (6026), 46 states have internal predecessors, (6026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:57,048 INFO L175 Difference]: Start difference. First operand has 274 places, 605 transitions, 9755 flow. Second operand 45 states and 4697 transitions. [2022-11-02 20:36:57,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 1304 transitions, 23635 flow