./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP --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 b869eaba59e8dca8d7cb2d1135193e506b8377811cada7a7f67b6d0824dd2d3d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:27:13,225 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:27:13,359 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:27:13,368 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:27:13,369 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:27:13,429 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:27:13,430 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:27:13,431 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:27:13,432 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:27:13,433 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:27:13,434 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:27:13,434 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:27:13,435 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:27:13,436 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:27:13,436 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:27:13,437 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:27:13,439 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:27:13,440 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:27:13,440 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:27:13,441 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:27:13,441 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:27:13,442 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:27:13,443 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:27:13,444 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:27:13,444 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:27:13,445 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:27:13,445 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:27:13,446 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:27:13,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:27:13,447 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:27:13,448 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:27:13,448 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:27:13,449 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:27:13,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:27:13,450 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:27:13,450 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:27:13,467 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:27:13,467 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:27:13,468 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:27:13,468 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b869eaba59e8dca8d7cb2d1135193e506b8377811cada7a7f67b6d0824dd2d3d [2023-11-06 22:27:13,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:27:13,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:27:13,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:27:13,928 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:27:13,929 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:27:13,930 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2023-11-06 22:27:16,882 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:27:17,142 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:27:17,143 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2023-11-06 22:27:17,153 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP/data/a68ab113a/4538b3ffd26d449990c6ff38b556a272/FLAGd7c532338 [2023-11-06 22:27:17,168 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP/data/a68ab113a/4538b3ffd26d449990c6ff38b556a272 [2023-11-06 22:27:17,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:27:17,172 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:27:17,174 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:27:17,174 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:27:17,179 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:27:17,180 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:27:17" (1/1) ... [2023-11-06 22:27:17,181 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17f22abc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:17, skipping insertion in model container [2023-11-06 22:27:17,181 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:27:17" (1/1) ... [2023-11-06 22:27:17,211 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:27:17,487 WARN L240 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_cb01b2e7-dd68-4671-a6ec-0599d5cee021/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c[4929,4942] [2023-11-06 22:27:17,499 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:27:17,509 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:27:17,547 WARN L240 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_cb01b2e7-dd68-4671-a6ec-0599d5cee021/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c[4929,4942] [2023-11-06 22:27:17,552 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:27:17,568 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:27:17,569 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:17 WrapperNode [2023-11-06 22:27:17,569 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:27:17,570 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:27:17,571 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:27:17,571 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:27:17,578 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:17" (1/1) ... [2023-11-06 22:27:17,605 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:17" (1/1) ... [2023-11-06 22:27:17,652 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 21, calls inlined = 29, statements flattened = 407 [2023-11-06 22:27:17,653 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:27:17,653 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:27:17,654 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:27:17,654 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:27:17,664 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:17" (1/1) ... [2023-11-06 22:27:17,665 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:17" (1/1) ... [2023-11-06 22:27:17,671 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:17" (1/1) ... [2023-11-06 22:27:17,671 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:17" (1/1) ... [2023-11-06 22:27:17,687 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:17" (1/1) ... [2023-11-06 22:27:17,694 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:17" (1/1) ... [2023-11-06 22:27:17,698 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:17" (1/1) ... [2023-11-06 22:27:17,700 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:17" (1/1) ... [2023-11-06 22:27:17,707 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:27:17,708 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:27:17,708 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:27:17,708 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:27:17,709 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:17" (1/1) ... [2023-11-06 22:27:17,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:27:17,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:27:17,744 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:27:17,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:27:17,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:27:17,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:27:17,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:27:17,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:27:17,808 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:27:17,808 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:27:17,808 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:27:17,809 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:27:17,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:27:17,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:27:17,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:27:17,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:27:17,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:27:17,815 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:27:18,009 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:27:18,011 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:27:18,726 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:27:18,741 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:27:18,741 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 22:27:18,744 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:27:18 BoogieIcfgContainer [2023-11-06 22:27:18,745 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:27:18,747 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:27:18,747 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:27:18,750 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:27:18,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:27:17" (1/3) ... [2023-11-06 22:27:18,752 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b992c3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:27:18, skipping insertion in model container [2023-11-06 22:27:18,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:17" (2/3) ... [2023-11-06 22:27:18,752 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b992c3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:27:18, skipping insertion in model container [2023-11-06 22:27:18,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:27:18" (3/3) ... [2023-11-06 22:27:18,754 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-symm.wvr.c [2023-11-06 22:27:18,763 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:27:18,774 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:27:18,775 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:27:18,775 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:27:18,930 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 22:27:18,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 490 places, 532 transitions, 1078 flow [2023-11-06 22:27:19,319 INFO L124 PetriNetUnfolderBase]: 49/530 cut-off events. [2023-11-06 22:27:19,320 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:27:19,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 539 conditions, 530 events. 49/530 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1544 event pairs, 0 based on Foata normal form. 0/480 useless extension candidates. Maximal degree in co-relation 357. Up to 2 conditions per place. [2023-11-06 22:27:19,348 INFO L82 GeneralOperation]: Start removeDead. Operand has 490 places, 532 transitions, 1078 flow [2023-11-06 22:27:19,369 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 479 places, 521 transitions, 1054 flow [2023-11-06 22:27:19,374 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:27:19,392 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 479 places, 521 transitions, 1054 flow [2023-11-06 22:27:19,401 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 479 places, 521 transitions, 1054 flow [2023-11-06 22:27:19,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 479 places, 521 transitions, 1054 flow [2023-11-06 22:27:19,590 INFO L124 PetriNetUnfolderBase]: 49/521 cut-off events. [2023-11-06 22:27:19,590 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:27:19,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 521 events. 49/521 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1521 event pairs, 0 based on Foata normal form. 0/472 useless extension candidates. Maximal degree in co-relation 357. Up to 2 conditions per place. [2023-11-06 22:27:19,644 INFO L119 LiptonReduction]: Number of co-enabled transitions 65048 [2023-11-06 22:27:45,593 INFO L134 LiptonReduction]: Checked pairs total: 59554 [2023-11-06 22:27:45,593 INFO L136 LiptonReduction]: Total number of compositions: 658 [2023-11-06 22:27:45,618 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:27:45,626 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;@343a2abc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:27:45,626 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-06 22:27:45,635 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:27:45,635 INFO L124 PetriNetUnfolderBase]: 8/29 cut-off events. [2023-11-06 22:27:45,635 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:27:45,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:45,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:45,637 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:27:45,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:45,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1713873421, now seen corresponding path program 1 times [2023-11-06 22:27:45,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:45,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731993492] [2023-11-06 22:27:45,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:45,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:45,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:46,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:27:46,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:46,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731993492] [2023-11-06 22:27:46,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731993492] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:27:46,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:27:46,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:27:46,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241573955] [2023-11-06 22:27:46,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:27:46,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:27:46,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:46,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:27:46,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:27:46,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 490 out of 1190 [2023-11-06 22:27:46,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 494.3333333333333) internal successors, (1483), 3 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:46,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:46,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 490 of 1190 [2023-11-06 22:27:46,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:46,455 INFO L124 PetriNetUnfolderBase]: 165/258 cut-off events. [2023-11-06 22:27:46,456 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-06 22:27:46,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546 conditions, 258 events. 165/258 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 668 event pairs, 87 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 488. Up to 257 conditions per place. [2023-11-06 22:27:46,459 INFO L140 encePairwiseOnDemand]: 1185/1190 looper letters, 28 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2023-11-06 22:27:46,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 32 transitions, 140 flow [2023-11-06 22:27:46,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:27:46,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:27:46,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1504 transitions. [2023-11-06 22:27:46,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42128851540616247 [2023-11-06 22:27:46,495 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1504 transitions. [2023-11-06 22:27:46,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1504 transitions. [2023-11-06 22:27:46,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:46,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1504 transitions. [2023-11-06 22:27:46,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 501.3333333333333) internal successors, (1504), 3 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:46,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1190.0) internal successors, (4760), 4 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:46,531 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1190.0) internal successors, (4760), 4 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:46,533 INFO L175 Difference]: Start difference. First operand has 29 places, 30 transitions, 72 flow. Second operand 3 states and 1504 transitions. [2023-11-06 22:27:46,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 32 transitions, 140 flow [2023-11-06 22:27:46,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 32 transitions, 132 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:27:46,540 INFO L231 Difference]: Finished difference. Result has 28 places, 32 transitions, 86 flow [2023-11-06 22:27:46,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1190, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=32} [2023-11-06 22:27:46,546 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2023-11-06 22:27:46,546 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 32 transitions, 86 flow [2023-11-06 22:27:46,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 494.3333333333333) internal successors, (1483), 3 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:46,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:46,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:46,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:27:46,549 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:27:46,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:46,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1590838790, now seen corresponding path program 1 times [2023-11-06 22:27:46,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:46,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833337039] [2023-11-06 22:27:46,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:46,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:46,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:46,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:27:46,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:46,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833337039] [2023-11-06 22:27:46,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833337039] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:27:46,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289459874] [2023-11-06 22:27:46,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:46,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:46,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:27:46,762 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:27:46,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:27:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:46,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:27:46,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:47,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:27:47,028 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:27:47,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:27:47,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289459874] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:27:47,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:27:47,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-11-06 22:27:47,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906252115] [2023-11-06 22:27:47,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:27:47,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:27:47,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:47,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:27:47,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:27:47,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 486 out of 1190 [2023-11-06 22:27:47,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 32 transitions, 86 flow. Second operand has 8 states, 8 states have (on average 488.625) internal successors, (3909), 8 states have internal predecessors, (3909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:47,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:47,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 486 of 1190 [2023-11-06 22:27:47,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:47,345 INFO L124 PetriNetUnfolderBase]: 165/264 cut-off events. [2023-11-06 22:27:47,345 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:27:47,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 558 conditions, 264 events. 165/264 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 661 event pairs, 87 based on Foata normal form. 3/190 useless extension candidates. Maximal degree in co-relation 528. Up to 257 conditions per place. [2023-11-06 22:27:47,347 INFO L140 encePairwiseOnDemand]: 1185/1190 looper letters, 28 selfloop transitions, 10 changer transitions 0/38 dead transitions. [2023-11-06 22:27:47,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 38 transitions, 186 flow [2023-11-06 22:27:47,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:27:47,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:27:47,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2960 transitions. [2023-11-06 22:27:47,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41456582633053224 [2023-11-06 22:27:47,361 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2960 transitions. [2023-11-06 22:27:47,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2960 transitions. [2023-11-06 22:27:47,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:47,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2960 transitions. [2023-11-06 22:27:47,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 493.3333333333333) internal successors, (2960), 6 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:47,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1190.0) internal successors, (8330), 7 states have internal predecessors, (8330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:47,399 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1190.0) internal successors, (8330), 7 states have internal predecessors, (8330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:47,400 INFO L175 Difference]: Start difference. First operand has 28 places, 32 transitions, 86 flow. Second operand 6 states and 2960 transitions. [2023-11-06 22:27:47,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 38 transitions, 186 flow [2023-11-06 22:27:47,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 38 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:27:47,403 INFO L231 Difference]: Finished difference. Result has 35 places, 38 transitions, 148 flow [2023-11-06 22:27:47,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1190, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=148, PETRI_PLACES=35, PETRI_TRANSITIONS=38} [2023-11-06 22:27:47,404 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2023-11-06 22:27:47,405 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 38 transitions, 148 flow [2023-11-06 22:27:47,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 488.625) internal successors, (3909), 8 states have internal predecessors, (3909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:47,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:47,409 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:47,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:27:47,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:47,616 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:27:47,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:47,617 INFO L85 PathProgramCache]: Analyzing trace with hash 838817969, now seen corresponding path program 2 times [2023-11-06 22:27:47,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:47,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793558739] [2023-11-06 22:27:47,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:47,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:47,909 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:27:47,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:47,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793558739] [2023-11-06 22:27:47,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793558739] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:27:47,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481890720] [2023-11-06 22:27:47,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:27:47,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:47,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:27:47,916 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:27:47,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:27:48,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:27:48,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:27:48,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:27:48,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:48,651 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-06 22:27:48,651 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:27:48,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481890720] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:27:48,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:27:48,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-11-06 22:27:48,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080526771] [2023-11-06 22:27:48,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:27:48,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:27:48,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:48,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:27:48,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:27:48,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 480 out of 1190 [2023-11-06 22:27:48,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 38 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 483.75) internal successors, (1935), 4 states have internal predecessors, (1935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:48,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:48,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 480 of 1190 [2023-11-06 22:27:48,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:49,081 INFO L124 PetriNetUnfolderBase]: 173/293 cut-off events. [2023-11-06 22:27:49,082 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:27:49,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 293 events. 173/293 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 889 event pairs, 87 based on Foata normal form. 1/213 useless extension candidates. Maximal degree in co-relation 578. Up to 257 conditions per place. [2023-11-06 22:27:49,084 INFO L140 encePairwiseOnDemand]: 1186/1190 looper letters, 44 selfloop transitions, 1 changer transitions 7/52 dead transitions. [2023-11-06 22:27:49,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 52 transitions, 285 flow [2023-11-06 22:27:49,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:27:49,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:27:49,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1966 transitions. [2023-11-06 22:27:49,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4130252100840336 [2023-11-06 22:27:49,093 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1966 transitions. [2023-11-06 22:27:49,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1966 transitions. [2023-11-06 22:27:49,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:49,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1966 transitions. [2023-11-06 22:27:49,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 491.5) internal successors, (1966), 4 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:49,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1190.0) internal successors, (5950), 5 states have internal predecessors, (5950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:49,118 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1190.0) internal successors, (5950), 5 states have internal predecessors, (5950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:49,118 INFO L175 Difference]: Start difference. First operand has 35 places, 38 transitions, 148 flow. Second operand 4 states and 1966 transitions. [2023-11-06 22:27:49,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 52 transitions, 285 flow [2023-11-06 22:27:49,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 52 transitions, 269 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-06 22:27:49,122 INFO L231 Difference]: Finished difference. Result has 39 places, 38 transitions, 141 flow [2023-11-06 22:27:49,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1190, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=141, PETRI_PLACES=39, PETRI_TRANSITIONS=38} [2023-11-06 22:27:49,123 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2023-11-06 22:27:49,123 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 38 transitions, 141 flow [2023-11-06 22:27:49,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 483.75) internal successors, (1935), 4 states have internal predecessors, (1935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:49,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:49,126 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:49,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:27:49,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:49,334 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:27:49,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:49,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1590919861, now seen corresponding path program 3 times [2023-11-06 22:27:49,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:49,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168884902] [2023-11-06 22:27:49,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:49,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:49,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:49,555 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:27:49,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:49,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168884902] [2023-11-06 22:27:49,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168884902] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:27:49,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753255088] [2023-11-06 22:27:49,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:27:49,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:49,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:27:49,558 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:27:49,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:27:49,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-06 22:27:49,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:27:49,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:27:49,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:50,063 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-06 22:27:50,063 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:27:50,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753255088] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:27:50,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:27:50,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-11-06 22:27:50,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128498016] [2023-11-06 22:27:50,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:27:50,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:27:50,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:50,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:27:50,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:27:50,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 480 out of 1190 [2023-11-06 22:27:50,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 483.75) internal successors, (1935), 4 states have internal predecessors, (1935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:50,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:50,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 480 of 1190 [2023-11-06 22:27:50,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:50,568 INFO L124 PetriNetUnfolderBase]: 183/327 cut-off events. [2023-11-06 22:27:50,569 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-11-06 22:27:50,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 327 events. 183/327 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1113 event pairs, 96 based on Foata normal form. 3/251 useless extension candidates. Maximal degree in co-relation 740. Up to 264 conditions per place. [2023-11-06 22:27:50,571 INFO L140 encePairwiseOnDemand]: 1186/1190 looper letters, 53 selfloop transitions, 1 changer transitions 5/59 dead transitions. [2023-11-06 22:27:50,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 59 transitions, 310 flow [2023-11-06 22:27:50,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:27:50,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:27:50,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1973 transitions. [2023-11-06 22:27:50,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41449579831932776 [2023-11-06 22:27:50,580 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1973 transitions. [2023-11-06 22:27:50,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1973 transitions. [2023-11-06 22:27:50,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:50,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1973 transitions. [2023-11-06 22:27:50,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 493.25) internal successors, (1973), 4 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:50,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1190.0) internal successors, (5950), 5 states have internal predecessors, (5950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:50,601 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1190.0) internal successors, (5950), 5 states have internal predecessors, (5950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:50,601 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 141 flow. Second operand 4 states and 1973 transitions. [2023-11-06 22:27:50,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 59 transitions, 310 flow [2023-11-06 22:27:50,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 59 transitions, 304 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-06 22:27:50,605 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 147 flow [2023-11-06 22:27:50,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1190, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=147, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2023-11-06 22:27:50,606 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2023-11-06 22:27:50,606 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 147 flow [2023-11-06 22:27:50,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 483.75) internal successors, (1935), 4 states have internal predecessors, (1935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:50,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:50,607 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:50,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:27:50,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:50,813 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:27:50,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:50,814 INFO L85 PathProgramCache]: Analyzing trace with hash -434365810, now seen corresponding path program 1 times [2023-11-06 22:27:50,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:50,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329124568] [2023-11-06 22:27:50,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:50,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:51,006 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-06 22:27:51,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:51,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329124568] [2023-11-06 22:27:51,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329124568] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:27:51,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:27:51,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:27:51,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190711471] [2023-11-06 22:27:51,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:27:51,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:27:51,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:51,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:27:51,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:27:51,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 496 out of 1190 [2023-11-06 22:27:51,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 501.3333333333333) internal successors, (1504), 3 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:51,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:51,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 496 of 1190 [2023-11-06 22:27:51,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:51,191 INFO L124 PetriNetUnfolderBase]: 139/246 cut-off events. [2023-11-06 22:27:51,192 INFO L125 PetriNetUnfolderBase]: For 174/174 co-relation queries the response was YES. [2023-11-06 22:27:51,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 246 events. 139/246 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 696 event pairs, 40 based on Foata normal form. 24/223 useless extension candidates. Maximal degree in co-relation 570. Up to 217 conditions per place. [2023-11-06 22:27:51,194 INFO L140 encePairwiseOnDemand]: 1186/1190 looper letters, 39 selfloop transitions, 2 changer transitions 4/45 dead transitions. [2023-11-06 22:27:51,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 257 flow [2023-11-06 22:27:51,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:27:51,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:27:51,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1527 transitions. [2023-11-06 22:27:51,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42773109243697477 [2023-11-06 22:27:51,201 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1527 transitions. [2023-11-06 22:27:51,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1527 transitions. [2023-11-06 22:27:51,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:51,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1527 transitions. [2023-11-06 22:27:51,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 509.0) internal successors, (1527), 3 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:51,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1190.0) internal successors, (4760), 4 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:51,217 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1190.0) internal successors, (4760), 4 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:51,218 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 147 flow. Second operand 3 states and 1527 transitions. [2023-11-06 22:27:51,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 257 flow [2023-11-06 22:27:51,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 45 transitions, 254 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-06 22:27:51,221 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 150 flow [2023-11-06 22:27:51,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1190, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2023-11-06 22:27:51,222 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2023-11-06 22:27:51,222 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 150 flow [2023-11-06 22:27:51,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 501.3333333333333) internal successors, (1504), 3 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:51,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:51,224 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:51,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:27:51,224 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:27:51,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:51,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1237690240, now seen corresponding path program 1 times [2023-11-06 22:27:51,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:51,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60958483] [2023-11-06 22:27:51,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:51,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:51,391 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:27:51,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:51,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60958483] [2023-11-06 22:27:51,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60958483] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:27:51,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790897637] [2023-11-06 22:27:51,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:51,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:51,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:27:51,394 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:27:51,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:27:51,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:51,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:27:51,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:51,634 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:27:51,635 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:27:51,684 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:27:51,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790897637] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:27:51,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:27:51,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 22:27:51,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261834996] [2023-11-06 22:27:51,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:27:51,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:27:51,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:51,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:27:51,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:27:51,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 486 out of 1190 [2023-11-06 22:27:51,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 150 flow. Second operand has 13 states, 13 states have (on average 488.15384615384613) internal successors, (6346), 13 states have internal predecessors, (6346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:51,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:51,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 486 of 1190 [2023-11-06 22:27:51,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:52,118 INFO L124 PetriNetUnfolderBase]: 135/236 cut-off events. [2023-11-06 22:27:52,118 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2023-11-06 22:27:52,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 589 conditions, 236 events. 135/236 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 624 event pairs, 83 based on Foata normal form. 1/190 useless extension candidates. Maximal degree in co-relation 525. Up to 227 conditions per place. [2023-11-06 22:27:52,120 INFO L140 encePairwiseOnDemand]: 1185/1190 looper letters, 28 selfloop transitions, 12 changer transitions 0/40 dead transitions. [2023-11-06 22:27:52,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 40 transitions, 242 flow [2023-11-06 22:27:52,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:27:52,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:27:52,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3442 transitions. [2023-11-06 22:27:52,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41320528211284513 [2023-11-06 22:27:52,134 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3442 transitions. [2023-11-06 22:27:52,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3442 transitions. [2023-11-06 22:27:52,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:52,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3442 transitions. [2023-11-06 22:27:52,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 491.7142857142857) internal successors, (3442), 7 states have internal predecessors, (3442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:52,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1190.0) internal successors, (9520), 8 states have internal predecessors, (9520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:52,164 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1190.0) internal successors, (9520), 8 states have internal predecessors, (9520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:52,164 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 150 flow. Second operand 7 states and 3442 transitions. [2023-11-06 22:27:52,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 40 transitions, 242 flow [2023-11-06 22:27:52,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 40 transitions, 234 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-06 22:27:52,170 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 188 flow [2023-11-06 22:27:52,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1190, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=188, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-11-06 22:27:52,173 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2023-11-06 22:27:52,173 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 188 flow [2023-11-06 22:27:52,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 488.15384615384613) internal successors, (6346), 13 states have internal predecessors, (6346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:52,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:52,177 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:52,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:27:52,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:52,390 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:27:52,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:52,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1260807039, now seen corresponding path program 2 times [2023-11-06 22:27:52,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:52,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886495438] [2023-11-06 22:27:52,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:52,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:52,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:52,599 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:27:52,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:52,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886495438] [2023-11-06 22:27:52,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886495438] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:27:52,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:27:52,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:27:52,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487993983] [2023-11-06 22:27:52,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:27:52,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:27:52,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:52,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:27:52,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:27:52,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 495 out of 1190 [2023-11-06 22:27:52,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 500.6666666666667) internal successors, (1502), 3 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:52,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:52,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 495 of 1190 [2023-11-06 22:27:52,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:52,879 INFO L124 PetriNetUnfolderBase]: 171/294 cut-off events. [2023-11-06 22:27:52,880 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-06 22:27:52,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 694 conditions, 294 events. 171/294 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 853 event pairs, 83 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 619. Up to 237 conditions per place. [2023-11-06 22:27:52,882 INFO L140 encePairwiseOnDemand]: 1187/1190 looper letters, 53 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2023-11-06 22:27:52,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 335 flow [2023-11-06 22:27:52,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:27:52,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:27:52,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1530 transitions. [2023-11-06 22:27:52,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2023-11-06 22:27:52,888 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1530 transitions. [2023-11-06 22:27:52,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1530 transitions. [2023-11-06 22:27:52,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:52,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1530 transitions. [2023-11-06 22:27:52,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 510.0) internal successors, (1530), 3 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:52,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1190.0) internal successors, (4760), 4 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:52,901 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1190.0) internal successors, (4760), 4 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:52,902 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 188 flow. Second operand 3 states and 1530 transitions. [2023-11-06 22:27:52,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 335 flow [2023-11-06 22:27:52,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 56 transitions, 311 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-06 22:27:52,906 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 179 flow [2023-11-06 22:27:52,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1190, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2023-11-06 22:27:52,908 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 14 predicate places. [2023-11-06 22:27:52,908 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 179 flow [2023-11-06 22:27:52,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 500.6666666666667) internal successors, (1502), 3 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:52,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:52,909 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:52,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:27:52,910 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:27:52,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:52,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1604858848, now seen corresponding path program 1 times [2023-11-06 22:27:52,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:52,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952079812] [2023-11-06 22:27:52,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:52,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:53,156 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-06 22:27:53,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:53,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952079812] [2023-11-06 22:27:53,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952079812] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:27:53,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:27:53,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:27:53,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031649975] [2023-11-06 22:27:53,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:27:53,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:27:53,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:27:53,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:27:53,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:27:53,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 495 out of 1190 [2023-11-06 22:27:53,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 501.0) internal successors, (1503), 3 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:53,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:27:53,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 495 of 1190 [2023-11-06 22:27:53,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:27:53,435 INFO L124 PetriNetUnfolderBase]: 275/458 cut-off events. [2023-11-06 22:27:53,436 INFO L125 PetriNetUnfolderBase]: For 245/245 co-relation queries the response was YES. [2023-11-06 22:27:53,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1200 conditions, 458 events. 275/458 cut-off events. For 245/245 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1406 event pairs, 119 based on Foata normal form. 0/374 useless extension candidates. Maximal degree in co-relation 1135. Up to 305 conditions per place. [2023-11-06 22:27:53,439 INFO L140 encePairwiseOnDemand]: 1186/1190 looper letters, 52 selfloop transitions, 4 changer transitions 0/56 dead transitions. [2023-11-06 22:27:53,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 56 transitions, 334 flow [2023-11-06 22:27:53,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:27:53,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:27:53,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1528 transitions. [2023-11-06 22:27:53,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280112044817927 [2023-11-06 22:27:53,445 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1528 transitions. [2023-11-06 22:27:53,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1528 transitions. [2023-11-06 22:27:53,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:27:53,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1528 transitions. [2023-11-06 22:27:53,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 509.3333333333333) internal successors, (1528), 3 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:53,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1190.0) internal successors, (4760), 4 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:53,458 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1190.0) internal successors, (4760), 4 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:53,458 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 179 flow. Second operand 3 states and 1528 transitions. [2023-11-06 22:27:53,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 56 transitions, 334 flow [2023-11-06 22:27:53,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 56 transitions, 325 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 22:27:53,461 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 196 flow [2023-11-06 22:27:53,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1190, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2023-11-06 22:27:53,461 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2023-11-06 22:27:53,462 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 196 flow [2023-11-06 22:27:53,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 501.0) internal successors, (1503), 3 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:27:53,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:27:53,462 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:27:53,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:27:53,463 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:27:53,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:27:53,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1909890794, now seen corresponding path program 1 times [2023-11-06 22:27:53,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:27:53,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139841622] [2023-11-06 22:27:53,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:53,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:27:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:57,972 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:27:57,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:27:57,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139841622] [2023-11-06 22:27:57,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139841622] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:27:57,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599449484] [2023-11-06 22:27:57,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:27:57,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:27:57,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:27:57,975 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:27:57,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01b2e7-dd68-4671-a6ec-0599d5cee021/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:27:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:27:58,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-06 22:27:58,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:27:59,468 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:27:59,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:29:10,471 WARN L293 SmtUtils]: Spent 1.03m on a formula simplification. DAG size of input: 1410 DAG size of output: 1377 (called from [L 319] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-06 22:29:10,472 INFO L322 Elim1Store]: treesize reduction 85, result has 97.8 percent of original size [2023-11-06 22:29:10,475 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 26 select indices, 26 select index equivalence classes, 0 disjoint index pairs (out of 325 index pairs), introduced 26 new quantified variables, introduced 325 case distinctions, treesize of input 409 treesize of output 4016