./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-min-le-max.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_46fd7489-09e9-4e6d-b1b9-5f2b0e16f1ae/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46fd7489-09e9-4e6d-b1b9-5f2b0e16f1ae/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_46fd7489-09e9-4e6d-b1b9-5f2b0e16f1ae/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46fd7489-09e9-4e6d-b1b9-5f2b0e16f1ae/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46fd7489-09e9-4e6d-b1b9-5f2b0e16f1ae/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_46fd7489-09e9-4e6d-b1b9-5f2b0e16f1ae/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 0d8799100fd609ab67add98408724f155026fd97a78e0a4112bb89c435f95463 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:21:39,312 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:21:39,433 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46fd7489-09e9-4e6d-b1b9-5f2b0e16f1ae/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:21:39,445 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:21:39,446 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:21:39,487 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:21:39,488 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:21:39,488 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:21:39,489 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:21:39,494 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:21:39,495 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:21:39,495 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:21:39,496 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:21:39,497 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:21:39,498 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:21:39,498 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:21:39,499 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:21:39,499 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:21:39,499 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:21:39,500 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:21:39,500 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:21:39,501 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:21:39,501 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:21:39,502 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:21:39,502 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:21:39,503 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:21:39,503 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:21:39,503 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:21:39,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:21:39,505 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:21:39,506 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:21:39,506 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:21:39,506 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:21:39,506 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:21:39,507 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:21:39,508 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:21:39,508 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:21:39,509 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:21:39,509 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:21:39,509 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_46fd7489-09e9-4e6d-b1b9-5f2b0e16f1ae/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46fd7489-09e9-4e6d-b1b9-5f2b0e16f1ae/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d8799100fd609ab67add98408724f155026fd97a78e0a4112bb89c435f95463 [2023-11-06 22:21:39,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:21:39,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:21:39,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:21:39,882 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:21:39,882 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:21:39,884 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46fd7489-09e9-4e6d-b1b9-5f2b0e16f1ae/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2023-11-06 22:21:43,109 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:21:43,322 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:21:43,323 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46fd7489-09e9-4e6d-b1b9-5f2b0e16f1ae/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2023-11-06 22:21:43,332 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46fd7489-09e9-4e6d-b1b9-5f2b0e16f1ae/bin/uautomizer-verify-WvqO1wxjHP/data/a2358cf12/85ed23927d9a4a9bb8acdae65621a110/FLAGdd09512b7 [2023-11-06 22:21:43,347 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46fd7489-09e9-4e6d-b1b9-5f2b0e16f1ae/bin/uautomizer-verify-WvqO1wxjHP/data/a2358cf12/85ed23927d9a4a9bb8acdae65621a110 [2023-11-06 22:21:43,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:21:43,352 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:21:43,354 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:21:43,354 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:21:43,360 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:21:43,361 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:21:43" (1/1) ... [2023-11-06 22:21:43,362 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@524d507e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:43, skipping insertion in model container [2023-11-06 22:21:43,362 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:21:43" (1/1) ... [2023-11-06 22:21:43,389 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:21:43,614 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_46fd7489-09e9-4e6d-b1b9-5f2b0e16f1ae/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c[2486,2499] [2023-11-06 22:21:43,623 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:21:43,635 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:21:43,660 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_46fd7489-09e9-4e6d-b1b9-5f2b0e16f1ae/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c[2486,2499] [2023-11-06 22:21:43,664 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:21:43,673 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:21:43,673 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:21:43,681 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:21:43,682 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:43 WrapperNode [2023-11-06 22:21:43,682 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:21:43,684 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:21:43,684 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:21:43,684 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:21:43,692 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:43" (1/1) ... [2023-11-06 22:21:43,708 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:43" (1/1) ... [2023-11-06 22:21:43,731 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 106 [2023-11-06 22:21:43,731 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:21:43,732 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:21:43,732 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:21:43,732 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:21:43,742 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:43" (1/1) ... [2023-11-06 22:21:43,742 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:43" (1/1) ... [2023-11-06 22:21:43,746 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:43" (1/1) ... [2023-11-06 22:21:43,746 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:43" (1/1) ... [2023-11-06 22:21:43,755 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:43" (1/1) ... [2023-11-06 22:21:43,759 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:43" (1/1) ... [2023-11-06 22:21:43,761 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:43" (1/1) ... [2023-11-06 22:21:43,763 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:43" (1/1) ... [2023-11-06 22:21:43,766 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:21:43,767 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:21:43,767 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:21:43,767 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:21:43,768 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:43" (1/1) ... [2023-11-06 22:21:43,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:21:43,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46fd7489-09e9-4e6d-b1b9-5f2b0e16f1ae/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:21:43,803 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46fd7489-09e9-4e6d-b1b9-5f2b0e16f1ae/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:21:43,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46fd7489-09e9-4e6d-b1b9-5f2b0e16f1ae/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:21:43,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:21:43,845 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:21:43,845 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:21:43,845 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:21:43,845 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:21:43,845 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:21:43,846 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:21:43,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:21:43,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:21:43,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:21:43,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:21:43,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:21:43,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:21:43,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:21:43,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:21:43,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:21:43,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:21:43,852 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 22:21:43,959 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:21:43,961 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:21:44,244 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:21:44,313 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:21:44,313 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-06 22:21:44,316 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:21:44 BoogieIcfgContainer [2023-11-06 22:21:44,316 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:21:44,319 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:21:44,320 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:21:44,323 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:21:44,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:21:43" (1/3) ... [2023-11-06 22:21:44,324 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@147c8ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:21:44, skipping insertion in model container [2023-11-06 22:21:44,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:43" (2/3) ... [2023-11-06 22:21:44,325 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@147c8ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:21:44, skipping insertion in model container [2023-11-06 22:21:44,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:21:44" (3/3) ... [2023-11-06 22:21:44,326 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2023-11-06 22:21:44,337 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:21:44,348 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:21:44,349 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:21:44,349 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:21:44,455 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:21:44,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 150 transitions, 321 flow [2023-11-06 22:21:44,600 INFO L124 PetriNetUnfolderBase]: 10/147 cut-off events. [2023-11-06 22:21:44,601 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:21:44,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 147 events. 10/147 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 82 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 116. Up to 2 conditions per place. [2023-11-06 22:21:44,607 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 150 transitions, 321 flow [2023-11-06 22:21:44,612 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 136 transitions, 290 flow [2023-11-06 22:21:44,616 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:21:44,625 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 136 transitions, 290 flow [2023-11-06 22:21:44,628 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 136 transitions, 290 flow [2023-11-06 22:21:44,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 136 transitions, 290 flow [2023-11-06 22:21:44,667 INFO L124 PetriNetUnfolderBase]: 10/136 cut-off events. [2023-11-06 22:21:44,667 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:21:44,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 136 events. 10/136 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 82 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 116. Up to 2 conditions per place. [2023-11-06 22:21:44,671 INFO L119 LiptonReduction]: Number of co-enabled transitions 1022 [2023-11-06 22:21:50,745 INFO L134 LiptonReduction]: Checked pairs total: 1203 [2023-11-06 22:21:50,745 INFO L136 LiptonReduction]: Total number of compositions: 141 [2023-11-06 22:21:50,762 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:21:50,769 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;@35495e09, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:21:50,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-06 22:21:50,776 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:21:50,777 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2023-11-06 22:21:50,777 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:21:50,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:50,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:21:50,778 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:21:50,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:50,784 INFO L85 PathProgramCache]: Analyzing trace with hash -419197650, now seen corresponding path program 1 times [2023-11-06 22:21:50,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:21:50,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224747684] [2023-11-06 22:21:50,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:50,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:21:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:51,294 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 22:21:51,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:21:51,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224747684] [2023-11-06 22:21:51,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224747684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:51,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:21:51,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:21:51,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691074433] [2023-11-06 22:21:51,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:51,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:21:51,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:21:51,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:21:51,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:21:51,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 291 [2023-11-06 22:21:51,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 132.5) internal successors, (530), 4 states have internal predecessors, (530), 0 states have call successors, (0), 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 22:21:51,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:51,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 291 [2023-11-06 22:21:51,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:21:51,612 INFO L124 PetriNetUnfolderBase]: 202/304 cut-off events. [2023-11-06 22:21:51,613 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-11-06 22:21:51,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 655 conditions, 304 events. 202/304 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 925 event pairs, 92 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 533. Up to 231 conditions per place. [2023-11-06 22:21:51,621 INFO L140 encePairwiseOnDemand]: 287/291 looper letters, 27 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2023-11-06 22:21:51,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 146 flow [2023-11-06 22:21:51,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:21:51,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:21:51,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 543 transitions. [2023-11-06 22:21:51,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46649484536082475 [2023-11-06 22:21:51,652 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 543 transitions. [2023-11-06 22:21:51,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 543 transitions. [2023-11-06 22:21:51,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:21:51,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 543 transitions. [2023-11-06 22:21:51,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 135.75) internal successors, (543), 4 states have internal predecessors, (543), 0 states have call successors, (0), 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 22:21:51,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 0 states have call successors, (0), 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 22:21:51,677 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 0 states have call successors, (0), 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 22:21:51,680 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 62 flow. Second operand 4 states and 543 transitions. [2023-11-06 22:21:51,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 146 flow [2023-11-06 22:21:51,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 31 transitions, 130 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 22:21:51,687 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 64 flow [2023-11-06 22:21:51,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=64, PETRI_PLACES=27, PETRI_TRANSITIONS=23} [2023-11-06 22:21:51,695 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -2 predicate places. [2023-11-06 22:21:51,695 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 64 flow [2023-11-06 22:21:51,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.5) internal successors, (530), 4 states have internal predecessors, (530), 0 states have call successors, (0), 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 22:21:51,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:51,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:21:51,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:21:51,698 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:21:51,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:51,708 INFO L85 PathProgramCache]: Analyzing trace with hash 696367327, now seen corresponding path program 1 times [2023-11-06 22:21:51,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:21:51,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688579703] [2023-11-06 22:21:51,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:51,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:21:51,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:51,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:21:51,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:21:51,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688579703] [2023-11-06 22:21:51,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688579703] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:51,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:21:51,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:21:51,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542014937] [2023-11-06 22:21:51,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:51,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:21:51,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:21:51,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:21:51,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:21:51,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 291 [2023-11-06 22:21:51,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 0 states have call successors, (0), 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 22:21:51,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:51,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 291 [2023-11-06 22:21:51,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:21:52,105 INFO L124 PetriNetUnfolderBase]: 174/276 cut-off events. [2023-11-06 22:21:52,105 INFO L125 PetriNetUnfolderBase]: For 55/78 co-relation queries the response was YES. [2023-11-06 22:21:52,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 686 conditions, 276 events. 174/276 cut-off events. For 55/78 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 840 event pairs, 93 based on Foata normal form. 23/249 useless extension candidates. Maximal degree in co-relation 236. Up to 214 conditions per place. [2023-11-06 22:21:52,108 INFO L140 encePairwiseOnDemand]: 287/291 looper letters, 29 selfloop transitions, 3 changer transitions 0/33 dead transitions. [2023-11-06 22:21:52,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 33 transitions, 157 flow [2023-11-06 22:21:52,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:21:52,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:21:52,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 543 transitions. [2023-11-06 22:21:52,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46649484536082475 [2023-11-06 22:21:52,112 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 543 transitions. [2023-11-06 22:21:52,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 543 transitions. [2023-11-06 22:21:52,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:21:52,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 543 transitions. [2023-11-06 22:21:52,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 135.75) internal successors, (543), 4 states have internal predecessors, (543), 0 states have call successors, (0), 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 22:21:52,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 0 states have call successors, (0), 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 22:21:52,120 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 0 states have call successors, (0), 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 22:21:52,120 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 64 flow. Second operand 4 states and 543 transitions. [2023-11-06 22:21:52,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 33 transitions, 157 flow [2023-11-06 22:21:52,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 33 transitions, 148 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-06 22:21:52,123 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 72 flow [2023-11-06 22:21:52,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2023-11-06 22:21:52,124 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 0 predicate places. [2023-11-06 22:21:52,124 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 72 flow [2023-11-06 22:21:52,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 0 states have call successors, (0), 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 22:21:52,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:52,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:21:52,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:21:52,126 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:21:52,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:52,127 INFO L85 PathProgramCache]: Analyzing trace with hash 562722175, now seen corresponding path program 1 times [2023-11-06 22:21:52,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:21:52,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147669338] [2023-11-06 22:21:52,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:52,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:21:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:52,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:21:52,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:21:52,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147669338] [2023-11-06 22:21:52,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147669338] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:52,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:21:52,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:21:52,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692028194] [2023-11-06 22:21:52,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:52,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:21:52,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:21:52,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:21:52,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:21:52,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 291 [2023-11-06 22:21:52,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 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 22:21:52,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:52,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 291 [2023-11-06 22:21:52,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:21:52,393 INFO L124 PetriNetUnfolderBase]: 136/220 cut-off events. [2023-11-06 22:21:52,394 INFO L125 PetriNetUnfolderBase]: For 63/99 co-relation queries the response was YES. [2023-11-06 22:21:52,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 583 conditions, 220 events. 136/220 cut-off events. For 63/99 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 622 event pairs, 93 based on Foata normal form. 37/212 useless extension candidates. Maximal degree in co-relation 390. Up to 217 conditions per place. [2023-11-06 22:21:52,397 INFO L140 encePairwiseOnDemand]: 288/291 looper letters, 21 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-11-06 22:21:52,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 25 transitions, 120 flow [2023-11-06 22:21:52,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:21:52,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:21:52,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 403 transitions. [2023-11-06 22:21:52,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4616265750286369 [2023-11-06 22:21:52,401 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 403 transitions. [2023-11-06 22:21:52,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 403 transitions. [2023-11-06 22:21:52,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:21:52,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 403 transitions. [2023-11-06 22:21:52,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 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 22:21:52,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 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 22:21:52,407 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 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 22:21:52,407 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 72 flow. Second operand 3 states and 403 transitions. [2023-11-06 22:21:52,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 25 transitions, 120 flow [2023-11-06 22:21:52,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 25 transitions, 114 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-06 22:21:52,410 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 78 flow [2023-11-06 22:21:52,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2023-11-06 22:21:52,411 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2023-11-06 22:21:52,411 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 78 flow [2023-11-06 22:21:52,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 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 22:21:52,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:52,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:21:52,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:21:52,413 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:21:52,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:52,414 INFO L85 PathProgramCache]: Analyzing trace with hash -586382893, now seen corresponding path program 1 times [2023-11-06 22:21:52,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:21:52,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349813708] [2023-11-06 22:21:52,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:52,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:21:52,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:52,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:21:52,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:21:52,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349813708] [2023-11-06 22:21:52,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349813708] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:21:52,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169604218] [2023-11-06 22:21:52,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:52,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:21:52,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46fd7489-09e9-4e6d-b1b9-5f2b0e16f1ae/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:21:52,904 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46fd7489-09e9-4e6d-b1b9-5f2b0e16f1ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:21:52,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46fd7489-09e9-4e6d-b1b9-5f2b0e16f1ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:21:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:53,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-06 22:21:53,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:21:53,170 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:21:53,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:53,234 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2023-11-06 22:21:53,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:53,342 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2023-11-06 22:21:53,416 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-06 22:21:53,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:21:53,456 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:21:54,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:21:54,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169604218] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:21:54,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:21:54,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 17 [2023-11-06 22:21:54,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252470096] [2023-11-06 22:21:54,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:21:54,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:21:54,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:21:54,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:21:54,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:21:55,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 291 [2023-11-06 22:21:55,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 78 flow. Second operand has 18 states, 18 states have (on average 100.11111111111111) internal successors, (1802), 18 states have internal predecessors, (1802), 0 states have call successors, (0), 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 22:21:55,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:55,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 291 [2023-11-06 22:21:55,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:21:55,884 INFO L124 PetriNetUnfolderBase]: 402/627 cut-off events. [2023-11-06 22:21:55,885 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2023-11-06 22:21:55,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1598 conditions, 627 events. 402/627 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2216 event pairs, 18 based on Foata normal form. 2/520 useless extension candidates. Maximal degree in co-relation 1585. Up to 178 conditions per place. [2023-11-06 22:21:55,889 INFO L140 encePairwiseOnDemand]: 281/291 looper letters, 0 selfloop transitions, 0 changer transitions 104/104 dead transitions. [2023-11-06 22:21:55,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 104 transitions, 534 flow [2023-11-06 22:21:55,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:21:55,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-06 22:21:55,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1553 transitions. [2023-11-06 22:21:55,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35578465063001147 [2023-11-06 22:21:55,896 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1553 transitions. [2023-11-06 22:21:55,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1553 transitions. [2023-11-06 22:21:55,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:21:55,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1553 transitions. [2023-11-06 22:21:55,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 103.53333333333333) internal successors, (1553), 15 states have internal predecessors, (1553), 0 states have call successors, (0), 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 22:21:55,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 291.0) internal successors, (4656), 16 states have internal predecessors, (4656), 0 states have call successors, (0), 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 22:21:55,915 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 291.0) internal successors, (4656), 16 states have internal predecessors, (4656), 0 states have call successors, (0), 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 22:21:55,915 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 78 flow. Second operand 15 states and 1553 transitions. [2023-11-06 22:21:55,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 104 transitions, 534 flow [2023-11-06 22:21:55,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 104 transitions, 530 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:21:55,919 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2023-11-06 22:21:55,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2023-11-06 22:21:55,920 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2023-11-06 22:21:55,920 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2023-11-06 22:21:55,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 100.11111111111111) internal successors, (1802), 18 states have internal predecessors, (1802), 0 states have call successors, (0), 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 22:21:55,924 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-06 22:21:55,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-06 22:21:55,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-06 22:21:55,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-06 22:21:55,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46fd7489-09e9-4e6d-b1b9-5f2b0e16f1ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:21:56,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46fd7489-09e9-4e6d-b1b9-5f2b0e16f1ae/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:21:56,133 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-06 22:21:56,136 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:21:56,136 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:21:56,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:21:56 BasicIcfg [2023-11-06 22:21:56,141 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:21:56,141 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:21:56,141 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:21:56,142 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:21:56,142 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:21:44" (3/4) ... [2023-11-06 22:21:56,144 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:21:56,148 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 22:21:56,148 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 22:21:56,148 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-06 22:21:56,154 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-11-06 22:21:56,154 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 22:21:56,155 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:21:56,155 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:21:56,238 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46fd7489-09e9-4e6d-b1b9-5f2b0e16f1ae/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:21:56,239 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46fd7489-09e9-4e6d-b1b9-5f2b0e16f1ae/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:21:56,239 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:21:56,240 INFO L158 Benchmark]: Toolchain (without parser) took 12887.44ms. Allocated memory was 161.5MB in the beginning and 247.5MB in the end (delta: 86.0MB). Free memory was 114.8MB in the beginning and 139.3MB in the end (delta: -24.5MB). Peak memory consumption was 62.1MB. Max. memory is 16.1GB. [2023-11-06 22:21:56,240 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 115.3MB. Free memory was 64.9MB in the beginning and 64.7MB in the end (delta: 184.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:21:56,240 INFO L158 Benchmark]: CACSL2BoogieTranslator took 329.21ms. Allocated memory is still 161.5MB. Free memory was 114.8MB in the beginning and 102.8MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:21:56,241 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.48ms. Allocated memory is still 161.5MB. Free memory was 102.8MB in the beginning and 101.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:21:56,241 INFO L158 Benchmark]: Boogie Preprocessor took 34.32ms. Allocated memory is still 161.5MB. Free memory was 101.0MB in the beginning and 99.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:21:56,241 INFO L158 Benchmark]: RCFGBuilder took 549.60ms. Allocated memory is still 161.5MB. Free memory was 98.8MB in the beginning and 79.1MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-06 22:21:56,242 INFO L158 Benchmark]: TraceAbstraction took 11821.36ms. Allocated memory was 161.5MB in the beginning and 247.5MB in the end (delta: 86.0MB). Free memory was 78.5MB in the beginning and 142.4MB in the end (delta: -63.9MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. [2023-11-06 22:21:56,242 INFO L158 Benchmark]: Witness Printer took 97.63ms. Allocated memory is still 247.5MB. Free memory was 142.4MB in the beginning and 139.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:21:56,246 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 115.3MB. Free memory was 64.9MB in the beginning and 64.7MB in the end (delta: 184.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 329.21ms. Allocated memory is still 161.5MB. Free memory was 114.8MB in the beginning and 102.8MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.48ms. Allocated memory is still 161.5MB. Free memory was 102.8MB in the beginning and 101.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.32ms. Allocated memory is still 161.5MB. Free memory was 101.0MB in the beginning and 99.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 549.60ms. Allocated memory is still 161.5MB. Free memory was 98.8MB in the beginning and 79.1MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 11821.36ms. Allocated memory was 161.5MB in the beginning and 247.5MB in the end (delta: 86.0MB). Free memory was 78.5MB in the beginning and 142.4MB in the end (delta: -63.9MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. * Witness Printer took 97.63ms. Allocated memory is still 247.5MB. Free memory was 142.4MB in the beginning and 139.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.1s, 136 PlacesBefore, 29 PlacesAfterwards, 136 TransitionsBefore, 22 TransitionsAfterwards, 1022 CoEnabledTransitionPairs, 7 FixpointIterations, 83 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 21 TrivialYvCompositions, 4 ConcurrentYvCompositions, 7 ChoiceCompositions, 141 TotalNumberOfCompositions, 1203 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1049, independent: 1023, independent conditional: 0, independent unconditional: 1023, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 542, independent: 529, independent conditional: 0, independent unconditional: 529, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1049, independent: 494, independent conditional: 0, independent unconditional: 494, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 542, unknown conditional: 0, unknown unconditional: 542] , Statistics on independence cache: Total cache size (in pairs): 38, Positive cache size: 35, Positive conditional cache size: 0, Positive unconditional cache size: 35, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 98]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 168 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 11.6s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.3s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 764 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 624 mSDsluCounter, 1124 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1094 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1125 IncrementalHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 30 mSDtfsCounter, 1125 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=3, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 120 ConstructedInterpolants, 4 QuantifiedInterpolants, 1026 SizeOfPredicates, 12 NumberOfNonLiveVariables, 193 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 6/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 22:21:56,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46fd7489-09e9-4e6d-b1b9-5f2b0e16f1ae/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE