./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_a0db606e-d881-4492-9f72-3f84adea2a50/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0db606e-d881-4492-9f72-3f84adea2a50/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0db606e-d881-4492-9f72-3f84adea2a50/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0db606e-d881-4492-9f72-3f84adea2a50/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0db606e-d881-4492-9f72-3f84adea2a50/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0db606e-d881-4492-9f72-3f84adea2a50/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --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 e5124dd4a5a155d8a4e322a35428820633f9eccdd993e14120e650d1ba1fbebe --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:37:10,802 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:37:10,897 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0db606e-d881-4492-9f72-3f84adea2a50/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 17:37:10,906 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:37:10,906 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:37:10,942 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:37:10,944 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:37:10,945 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:37:10,945 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:37:10,947 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:37:10,947 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:37:10,947 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:37:10,948 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:37:10,951 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:37:10,952 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:37:10,952 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:37:10,952 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:37:10,953 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:37:10,953 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:37:10,953 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:37:10,953 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:37:10,957 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:37:10,957 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:37:10,958 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:37:10,958 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:37:10,958 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:37:10,958 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:37:10,959 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:37:10,959 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:37:10,959 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:37:10,959 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:37:10,960 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:37:10,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:37:10,960 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:37:10,961 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:37:10,961 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:37:10,961 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:37:10,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:37:10,961 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:37:10,962 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:37:10,962 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:37:10,964 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:37:10,964 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_a0db606e-d881-4492-9f72-3f84adea2a50/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0db606e-d881-4492-9f72-3f84adea2a50/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e5124dd4a5a155d8a4e322a35428820633f9eccdd993e14120e650d1ba1fbebe [2024-11-08 17:37:11,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:37:11,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:37:11,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:37:11,315 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:37:11,315 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:37:11,317 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0db606e-d881-4492-9f72-3f84adea2a50/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c Unable to find full path for "g++" [2024-11-08 17:37:13,394 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:37:13,675 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:37:13,677 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0db606e-d881-4492-9f72-3f84adea2a50/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2024-11-08 17:37:13,689 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0db606e-d881-4492-9f72-3f84adea2a50/bin/uautomizer-verify-jihMAELWvX/data/1522975e6/43bd2bf682e64b7ea11c80e1d6fb0dc7/FLAG75e4b713c [2024-11-08 17:37:13,708 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0db606e-d881-4492-9f72-3f84adea2a50/bin/uautomizer-verify-jihMAELWvX/data/1522975e6/43bd2bf682e64b7ea11c80e1d6fb0dc7 [2024-11-08 17:37:13,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:37:13,715 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:37:13,716 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:37:13,716 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:37:13,723 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:37:13,724 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:37:13" (1/1) ... [2024-11-08 17:37:13,725 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76988b3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:13, skipping insertion in model container [2024-11-08 17:37:13,727 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:37:13" (1/1) ... [2024-11-08 17:37:13,766 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:37:14,052 WARN L250 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_a0db606e-d881-4492-9f72-3f84adea2a50/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c[4270,4283] [2024-11-08 17:37:14,067 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:37:14,079 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:37:14,113 WARN L250 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_a0db606e-d881-4492-9f72-3f84adea2a50/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c[4270,4283] [2024-11-08 17:37:14,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:37:14,137 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:37:14,137 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:14 WrapperNode [2024-11-08 17:37:14,138 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:37:14,139 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:37:14,139 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:37:14,139 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:37:14,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:14" (1/1) ... [2024-11-08 17:37:14,158 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:14" (1/1) ... [2024-11-08 17:37:14,194 INFO L138 Inliner]: procedures = 26, calls = 60, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 290 [2024-11-08 17:37:14,195 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:37:14,196 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:37:14,196 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:37:14,196 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:37:14,210 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:14" (1/1) ... [2024-11-08 17:37:14,210 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:14" (1/1) ... [2024-11-08 17:37:14,215 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:14" (1/1) ... [2024-11-08 17:37:14,236 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-08 17:37:14,237 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:14" (1/1) ... [2024-11-08 17:37:14,237 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:14" (1/1) ... [2024-11-08 17:37:14,248 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:14" (1/1) ... [2024-11-08 17:37:14,256 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:14" (1/1) ... [2024-11-08 17:37:14,261 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:14" (1/1) ... [2024-11-08 17:37:14,266 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:14" (1/1) ... [2024-11-08 17:37:14,272 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:37:14,275 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:37:14,276 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:37:14,276 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:37:14,277 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:14" (1/1) ... [2024-11-08 17:37:14,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:37:14,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0db606e-d881-4492-9f72-3f84adea2a50/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:37:14,316 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0db606e-d881-4492-9f72-3f84adea2a50/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:37:14,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0db606e-d881-4492-9f72-3f84adea2a50/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:37:14,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:37:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 17:37:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 17:37:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 17:37:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 17:37:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 17:37:14,366 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 17:37:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 17:37:14,366 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 17:37:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 17:37:14,366 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 17:37:14,367 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-08 17:37:14,367 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-08 17:37:14,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:37:14,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 17:37:14,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 17:37:14,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 17:37:14,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 17:37:14,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:37:14,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:37:14,372 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 17:37:14,516 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:37:14,519 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:37:15,081 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 17:37:15,083 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:37:15,593 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:37:15,593 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 17:37:15,594 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:37:15 BoogieIcfgContainer [2024-11-08 17:37:15,594 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:37:15,597 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:37:15,597 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:37:15,603 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:37:15,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:37:13" (1/3) ... [2024-11-08 17:37:15,605 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@571845ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:37:15, skipping insertion in model container [2024-11-08 17:37:15,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:37:14" (2/3) ... [2024-11-08 17:37:15,605 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@571845ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:37:15, skipping insertion in model container [2024-11-08 17:37:15,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:37:15" (3/3) ... [2024-11-08 17:37:15,607 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult.wvr.c [2024-11-08 17:37:15,625 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:37:15,625 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 17:37:15,625 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 17:37:15,706 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-08 17:37:15,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 68 transitions, 164 flow [2024-11-08 17:37:15,814 INFO L124 PetriNetUnfolderBase]: 12/64 cut-off events. [2024-11-08 17:37:15,815 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-08 17:37:15,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 64 events. 12/64 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 133 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2024-11-08 17:37:15,821 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 68 transitions, 164 flow [2024-11-08 17:37:15,827 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 63 transitions, 150 flow [2024-11-08 17:37:15,838 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:37:15,846 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@301ee6f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:37:15,847 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-08 17:37:15,880 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:37:15,880 INFO L124 PetriNetUnfolderBase]: 12/62 cut-off events. [2024-11-08 17:37:15,881 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-08 17:37:15,881 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:37:15,882 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:37:15,883 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-08 17:37:15,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:37:15,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1468229976, now seen corresponding path program 1 times [2024-11-08 17:37:15,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:37:15,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441839184] [2024-11-08 17:37:15,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:15,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:37:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:16,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:37:16,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:37:16,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441839184] [2024-11-08 17:37:16,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441839184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:37:16,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:37:16,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:37:16,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765045832] [2024-11-08 17:37:16,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:37:16,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:37:16,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:37:16,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:37:16,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:37:16,514 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 68 [2024-11-08 17:37:16,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 63 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:37:16,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:37:16,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 68 [2024-11-08 17:37:16,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:37:17,514 INFO L124 PetriNetUnfolderBase]: 2742/4733 cut-off events. [2024-11-08 17:37:17,516 INFO L125 PetriNetUnfolderBase]: For 211/211 co-relation queries the response was YES. [2024-11-08 17:37:17,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8002 conditions, 4733 events. 2742/4733 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 31954 event pairs, 472 based on Foata normal form. 1/3797 useless extension candidates. Maximal degree in co-relation 7230. Up to 2067 conditions per place. [2024-11-08 17:37:17,580 INFO L140 encePairwiseOnDemand]: 64/68 looper letters, 41 selfloop transitions, 3 changer transitions 1/80 dead transitions. [2024-11-08 17:37:17,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 80 transitions, 289 flow [2024-11-08 17:37:17,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:37:17,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:37:17,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2024-11-08 17:37:17,596 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7990196078431373 [2024-11-08 17:37:17,598 INFO L175 Difference]: Start difference. First operand has 64 places, 63 transitions, 150 flow. Second operand 3 states and 163 transitions. [2024-11-08 17:37:17,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 80 transitions, 289 flow [2024-11-08 17:37:17,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 80 transitions, 263 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-08 17:37:17,617 INFO L231 Difference]: Finished difference. Result has 59 places, 65 transitions, 153 flow [2024-11-08 17:37:17,620 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=59, PETRI_TRANSITIONS=65} [2024-11-08 17:37:17,624 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, -5 predicate places. [2024-11-08 17:37:17,624 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 65 transitions, 153 flow [2024-11-08 17:37:17,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:37:17,625 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:37:17,626 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:37:17,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:37:17,626 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-08 17:37:17,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:37:17,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1558731620, now seen corresponding path program 1 times [2024-11-08 17:37:17,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:37:17,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839364458] [2024-11-08 17:37:17,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:17,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:37:17,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:17,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:37:17,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:37:17,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839364458] [2024-11-08 17:37:17,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839364458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:37:17,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:37:17,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:37:17,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352752171] [2024-11-08 17:37:17,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:37:17,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:37:17,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:37:17,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:37:17,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:37:17,881 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 68 [2024-11-08 17:37:17,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 65 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:37:17,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:37:17,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 68 [2024-11-08 17:37:17,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:37:18,655 INFO L124 PetriNetUnfolderBase]: 2653/4408 cut-off events. [2024-11-08 17:37:18,656 INFO L125 PetriNetUnfolderBase]: For 626/626 co-relation queries the response was YES. [2024-11-08 17:37:18,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8339 conditions, 4408 events. 2653/4408 cut-off events. For 626/626 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 28436 event pairs, 549 based on Foata normal form. 76/3765 useless extension candidates. Maximal degree in co-relation 2966. Up to 2321 conditions per place. [2024-11-08 17:37:18,711 INFO L140 encePairwiseOnDemand]: 65/68 looper letters, 49 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2024-11-08 17:37:18,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 86 transitions, 311 flow [2024-11-08 17:37:18,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:37:18,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:37:18,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 166 transitions. [2024-11-08 17:37:18,713 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8137254901960784 [2024-11-08 17:37:18,713 INFO L175 Difference]: Start difference. First operand has 59 places, 65 transitions, 153 flow. Second operand 3 states and 166 transitions. [2024-11-08 17:37:18,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 86 transitions, 311 flow [2024-11-08 17:37:18,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 86 transitions, 307 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:37:18,716 INFO L231 Difference]: Finished difference. Result has 61 places, 66 transitions, 164 flow [2024-11-08 17:37:18,716 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=61, PETRI_TRANSITIONS=66} [2024-11-08 17:37:18,720 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, -3 predicate places. [2024-11-08 17:37:18,721 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 66 transitions, 164 flow [2024-11-08 17:37:18,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:37:18,721 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:37:18,721 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:37:18,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:37:18,722 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-08 17:37:18,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:37:18,722 INFO L85 PathProgramCache]: Analyzing trace with hash -379492034, now seen corresponding path program 1 times [2024-11-08 17:37:18,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:37:18,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245953071] [2024-11-08 17:37:18,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:18,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:37:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:18,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:37:18,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:37:18,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245953071] [2024-11-08 17:37:18,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245953071] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:37:18,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:37:18,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:37:18,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125666749] [2024-11-08 17:37:18,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:37:18,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:37:18,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:37:18,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:37:18,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:37:18,936 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 68 [2024-11-08 17:37:18,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 66 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:37:18,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:37:18,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 68 [2024-11-08 17:37:18,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:37:19,659 INFO L124 PetriNetUnfolderBase]: 2637/4566 cut-off events. [2024-11-08 17:37:19,659 INFO L125 PetriNetUnfolderBase]: For 1393/1393 co-relation queries the response was YES. [2024-11-08 17:37:19,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8972 conditions, 4566 events. 2637/4566 cut-off events. For 1393/1393 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 30732 event pairs, 571 based on Foata normal form. 39/3869 useless extension candidates. Maximal degree in co-relation 6544. Up to 2334 conditions per place. [2024-11-08 17:37:19,707 INFO L140 encePairwiseOnDemand]: 65/68 looper letters, 49 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2024-11-08 17:37:19,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 86 transitions, 327 flow [2024-11-08 17:37:19,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:37:19,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:37:19,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 164 transitions. [2024-11-08 17:37:19,711 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.803921568627451 [2024-11-08 17:37:19,711 INFO L175 Difference]: Start difference. First operand has 61 places, 66 transitions, 164 flow. Second operand 3 states and 164 transitions. [2024-11-08 17:37:19,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 86 transitions, 327 flow [2024-11-08 17:37:19,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 86 transitions, 324 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:37:19,717 INFO L231 Difference]: Finished difference. Result has 63 places, 67 transitions, 176 flow [2024-11-08 17:37:19,718 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=63, PETRI_TRANSITIONS=67} [2024-11-08 17:37:19,718 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, -1 predicate places. [2024-11-08 17:37:19,719 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 67 transitions, 176 flow [2024-11-08 17:37:19,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:37:19,719 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:37:19,720 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:37:19,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:37:19,720 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-08 17:37:19,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:37:19,721 INFO L85 PathProgramCache]: Analyzing trace with hash 2127948119, now seen corresponding path program 1 times [2024-11-08 17:37:19,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:37:19,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467081773] [2024-11-08 17:37:19,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:19,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:37:19,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:19,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:37:19,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:37:19,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467081773] [2024-11-08 17:37:19,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467081773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:37:19,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:37:19,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:37:19,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101544291] [2024-11-08 17:37:19,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:37:19,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:37:19,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:37:19,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:37:19,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:37:19,985 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 68 [2024-11-08 17:37:19,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 67 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:37:19,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:37:19,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 68 [2024-11-08 17:37:19,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:37:21,048 INFO L124 PetriNetUnfolderBase]: 3115/5534 cut-off events. [2024-11-08 17:37:21,049 INFO L125 PetriNetUnfolderBase]: For 2314/2314 co-relation queries the response was YES. [2024-11-08 17:37:21,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11345 conditions, 5534 events. 3115/5534 cut-off events. For 2314/2314 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 41470 event pairs, 2081 based on Foata normal form. 92/4420 useless extension candidates. Maximal degree in co-relation 5378. Up to 3081 conditions per place. [2024-11-08 17:37:21,104 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 61 selfloop transitions, 5 changer transitions 0/97 dead transitions. [2024-11-08 17:37:21,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 97 transitions, 391 flow [2024-11-08 17:37:21,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:37:21,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:37:21,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 236 transitions. [2024-11-08 17:37:21,108 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6941176470588235 [2024-11-08 17:37:21,109 INFO L175 Difference]: Start difference. First operand has 63 places, 67 transitions, 176 flow. Second operand 5 states and 236 transitions. [2024-11-08 17:37:21,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 97 transitions, 391 flow [2024-11-08 17:37:21,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 97 transitions, 388 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:37:21,115 INFO L231 Difference]: Finished difference. Result has 69 places, 71 transitions, 210 flow [2024-11-08 17:37:21,116 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=210, PETRI_PLACES=69, PETRI_TRANSITIONS=71} [2024-11-08 17:37:21,117 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 5 predicate places. [2024-11-08 17:37:21,118 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 71 transitions, 210 flow [2024-11-08 17:37:21,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:37:21,119 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:37:21,119 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:37:21,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 17:37:21,119 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-08 17:37:21,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:37:21,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1570353271, now seen corresponding path program 1 times [2024-11-08 17:37:21,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:37:21,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430248014] [2024-11-08 17:37:21,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:21,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:37:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:21,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:37:21,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:37:21,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430248014] [2024-11-08 17:37:21,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430248014] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:37:21,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:37:21,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:37:21,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293605672] [2024-11-08 17:37:21,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:37:21,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:37:21,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:37:21,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:37:21,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:37:21,391 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 68 [2024-11-08 17:37:21,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 71 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:37:21,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:37:21,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 68 [2024-11-08 17:37:21,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:37:22,408 INFO L124 PetriNetUnfolderBase]: 3900/7196 cut-off events. [2024-11-08 17:37:22,409 INFO L125 PetriNetUnfolderBase]: For 2969/2969 co-relation queries the response was YES. [2024-11-08 17:37:22,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14326 conditions, 7196 events. 3900/7196 cut-off events. For 2969/2969 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 58089 event pairs, 2645 based on Foata normal form. 132/5785 useless extension candidates. Maximal degree in co-relation 11684. Up to 3849 conditions per place. [2024-11-08 17:37:22,481 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 60 selfloop transitions, 6 changer transitions 0/97 dead transitions. [2024-11-08 17:37:22,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 97 transitions, 418 flow [2024-11-08 17:37:22,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:37:22,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:37:22,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 232 transitions. [2024-11-08 17:37:22,483 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6823529411764706 [2024-11-08 17:37:22,483 INFO L175 Difference]: Start difference. First operand has 69 places, 71 transitions, 210 flow. Second operand 5 states and 232 transitions. [2024-11-08 17:37:22,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 97 transitions, 418 flow [2024-11-08 17:37:22,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 97 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:37:22,487 INFO L231 Difference]: Finished difference. Result has 75 places, 75 transitions, 247 flow [2024-11-08 17:37:22,488 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=247, PETRI_PLACES=75, PETRI_TRANSITIONS=75} [2024-11-08 17:37:22,488 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 11 predicate places. [2024-11-08 17:37:22,489 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 75 transitions, 247 flow [2024-11-08 17:37:22,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:37:22,489 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:37:22,489 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:37:22,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 17:37:22,490 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-08 17:37:22,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:37:22,490 INFO L85 PathProgramCache]: Analyzing trace with hash 255313785, now seen corresponding path program 1 times [2024-11-08 17:37:22,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:37:22,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371894808] [2024-11-08 17:37:22,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:22,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:37:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:23,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:37:23,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:37:23,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371894808] [2024-11-08 17:37:23,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371894808] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:37:23,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070896872] [2024-11-08 17:37:23,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:23,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:37:23,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0db606e-d881-4492-9f72-3f84adea2a50/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:37:23,054 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0db606e-d881-4492-9f72-3f84adea2a50/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:37:23,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0db606e-d881-4492-9f72-3f84adea2a50/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:37:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:23,205 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 17:37:23,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:37:23,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:37:23,514 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:37:23,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070896872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:37:23,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:37:23,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-11-08 17:37:23,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355086633] [2024-11-08 17:37:23,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:37:23,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:37:23,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:37:23,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:37:23,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-08 17:37:23,600 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 68 [2024-11-08 17:37:23,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 75 transitions, 247 flow. Second operand has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:37:23,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:37:23,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 68 [2024-11-08 17:37:23,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:37:27,765 INFO L124 PetriNetUnfolderBase]: 21076/32214 cut-off events. [2024-11-08 17:37:27,765 INFO L125 PetriNetUnfolderBase]: For 12025/12025 co-relation queries the response was YES. [2024-11-08 17:37:27,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70120 conditions, 32214 events. 21076/32214 cut-off events. For 12025/12025 co-relation queries the response was YES. Maximal size of possible extension queue 1571. Compared 246914 event pairs, 1638 based on Foata normal form. 816/31565 useless extension candidates. Maximal degree in co-relation 55340. Up to 10985 conditions per place. [2024-11-08 17:37:28,115 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 140 selfloop transitions, 13 changer transitions 0/184 dead transitions. [2024-11-08 17:37:28,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 184 transitions, 907 flow [2024-11-08 17:37:28,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:37:28,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 17:37:28,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 352 transitions. [2024-11-08 17:37:28,118 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7394957983193278 [2024-11-08 17:37:28,118 INFO L175 Difference]: Start difference. First operand has 75 places, 75 transitions, 247 flow. Second operand 7 states and 352 transitions. [2024-11-08 17:37:28,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 184 transitions, 907 flow [2024-11-08 17:37:28,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 184 transitions, 904 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:37:28,126 INFO L231 Difference]: Finished difference. Result has 85 places, 87 transitions, 332 flow [2024-11-08 17:37:28,126 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=332, PETRI_PLACES=85, PETRI_TRANSITIONS=87} [2024-11-08 17:37:28,127 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 21 predicate places. [2024-11-08 17:37:28,127 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 87 transitions, 332 flow [2024-11-08 17:37:28,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:37:28,128 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:37:28,128 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:37:28,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0db606e-d881-4492-9f72-3f84adea2a50/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 17:37:28,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0db606e-d881-4492-9f72-3f84adea2a50/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-08 17:37:28,333 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-08 17:37:28,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:37:28,337 INFO L85 PathProgramCache]: Analyzing trace with hash -360767387, now seen corresponding path program 2 times [2024-11-08 17:37:28,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:37:28,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474987019] [2024-11-08 17:37:28,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:28,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:37:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:29,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:37:29,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:37:29,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474987019] [2024-11-08 17:37:29,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474987019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:37:29,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:37:29,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:37:29,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304029588] [2024-11-08 17:37:29,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:37:29,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:37:29,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:37:29,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:37:29,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:37:29,240 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 68 [2024-11-08 17:37:29,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 87 transitions, 332 flow. Second operand has 7 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:37:29,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:37:29,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 68 [2024-11-08 17:37:29,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:37:35,814 INFO L124 PetriNetUnfolderBase]: 40038/57633 cut-off events. [2024-11-08 17:37:35,814 INFO L125 PetriNetUnfolderBase]: For 32588/32718 co-relation queries the response was YES. [2024-11-08 17:37:36,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146348 conditions, 57633 events. 40038/57633 cut-off events. For 32588/32718 co-relation queries the response was YES. Maximal size of possible extension queue 3130. Compared 441774 event pairs, 5024 based on Foata normal form. 1450/57721 useless extension candidates. Maximal degree in co-relation 120655. Up to 30273 conditions per place. [2024-11-08 17:37:36,498 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 153 selfloop transitions, 19 changer transitions 3/204 dead transitions. [2024-11-08 17:37:36,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 204 transitions, 1104 flow [2024-11-08 17:37:36,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:37:36,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 17:37:36,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 349 transitions. [2024-11-08 17:37:36,501 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7331932773109243 [2024-11-08 17:37:36,502 INFO L175 Difference]: Start difference. First operand has 85 places, 87 transitions, 332 flow. Second operand 7 states and 349 transitions. [2024-11-08 17:37:36,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 204 transitions, 1104 flow [2024-11-08 17:37:36,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 204 transitions, 1104 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 17:37:36,695 INFO L231 Difference]: Finished difference. Result has 96 places, 106 transitions, 529 flow [2024-11-08 17:37:36,695 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=529, PETRI_PLACES=96, PETRI_TRANSITIONS=106} [2024-11-08 17:37:36,696 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 32 predicate places. [2024-11-08 17:37:36,696 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 106 transitions, 529 flow [2024-11-08 17:37:36,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:37:36,697 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:37:36,697 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:37:36,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 17:37:36,698 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-08 17:37:36,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:37:36,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1039844603, now seen corresponding path program 3 times [2024-11-08 17:37:36,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:37:36,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554028916] [2024-11-08 17:37:36,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:36,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:37:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:37,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:37:37,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:37:37,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554028916] [2024-11-08 17:37:37,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554028916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:37:37,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:37:37,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:37:37,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503879112] [2024-11-08 17:37:37,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:37:37,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:37:37,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:37:37,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:37:37,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:37:37,606 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 68 [2024-11-08 17:37:37,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 106 transitions, 529 flow. Second operand has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:37:37,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:37:37,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 68 [2024-11-08 17:37:37,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:37:47,205 INFO L124 PetriNetUnfolderBase]: 48871/77289 cut-off events. [2024-11-08 17:37:47,205 INFO L125 PetriNetUnfolderBase]: For 66948/67616 co-relation queries the response was YES. [2024-11-08 17:37:47,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199929 conditions, 77289 events. 48871/77289 cut-off events. For 66948/67616 co-relation queries the response was YES. Maximal size of possible extension queue 4044. Compared 701237 event pairs, 4615 based on Foata normal form. 4396/78624 useless extension candidates. Maximal degree in co-relation 167785. Up to 27604 conditions per place. [2024-11-08 17:37:47,838 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 186 selfloop transitions, 56 changer transitions 3/282 dead transitions. [2024-11-08 17:37:47,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 282 transitions, 1870 flow [2024-11-08 17:37:47,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 17:37:47,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-08 17:37:47,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 443 transitions. [2024-11-08 17:37:47,841 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7238562091503268 [2024-11-08 17:37:47,841 INFO L175 Difference]: Start difference. First operand has 96 places, 106 transitions, 529 flow. Second operand 9 states and 443 transitions. [2024-11-08 17:37:47,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 282 transitions, 1870 flow [2024-11-08 17:37:48,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 282 transitions, 1870 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 17:37:48,050 INFO L231 Difference]: Finished difference. Result has 111 places, 158 transitions, 1205 flow [2024-11-08 17:37:48,050 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1205, PETRI_PLACES=111, PETRI_TRANSITIONS=158} [2024-11-08 17:37:48,051 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 47 predicate places. [2024-11-08 17:37:48,051 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 158 transitions, 1205 flow [2024-11-08 17:37:48,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:37:48,051 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:37:48,052 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:37:48,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 17:37:48,052 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-08 17:37:48,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:37:48,052 INFO L85 PathProgramCache]: Analyzing trace with hash 307737987, now seen corresponding path program 4 times [2024-11-08 17:37:48,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:37:48,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577274227] [2024-11-08 17:37:48,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:48,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:37:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:48,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:37:48,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:37:48,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577274227] [2024-11-08 17:37:48,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577274227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:37:48,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:37:48,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:37:48,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645038549] [2024-11-08 17:37:48,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:37:48,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:37:48,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:37:48,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:37:48,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:37:48,669 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 68 [2024-11-08 17:37:48,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 158 transitions, 1205 flow. Second operand has 6 states, 6 states have (on average 34.166666666666664) internal successors, (205), 6 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:37:48,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:37:48,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 68 [2024-11-08 17:37:48,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:37:59,613 INFO L124 PetriNetUnfolderBase]: 53477/81217 cut-off events. [2024-11-08 17:37:59,613 INFO L125 PetriNetUnfolderBase]: For 152783/155291 co-relation queries the response was YES. [2024-11-08 17:38:00,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254704 conditions, 81217 events. 53477/81217 cut-off events. For 152783/155291 co-relation queries the response was YES. Maximal size of possible extension queue 4571. Compared 705864 event pairs, 7086 based on Foata normal form. 1614/78655 useless extension candidates. Maximal degree in co-relation 206930. Up to 46124 conditions per place. [2024-11-08 17:38:00,700 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 223 selfloop transitions, 57 changer transitions 1/315 dead transitions. [2024-11-08 17:38:00,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 315 transitions, 2634 flow [2024-11-08 17:38:00,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:38:00,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-08 17:38:00,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 393 transitions. [2024-11-08 17:38:00,702 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7224264705882353 [2024-11-08 17:38:00,702 INFO L175 Difference]: Start difference. First operand has 111 places, 158 transitions, 1205 flow. Second operand 8 states and 393 transitions. [2024-11-08 17:38:00,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 315 transitions, 2634 flow [2024-11-08 17:38:02,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 315 transitions, 2634 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 17:38:02,993 INFO L231 Difference]: Finished difference. Result has 123 places, 190 transitions, 1706 flow [2024-11-08 17:38:02,994 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1205, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1706, PETRI_PLACES=123, PETRI_TRANSITIONS=190} [2024-11-08 17:38:02,995 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 59 predicate places. [2024-11-08 17:38:02,995 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 190 transitions, 1706 flow [2024-11-08 17:38:02,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.166666666666664) internal successors, (205), 6 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:38:02,995 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:38:02,995 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:38:02,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 17:38:02,996 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-08 17:38:02,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:38:02,996 INFO L85 PathProgramCache]: Analyzing trace with hash 162407733, now seen corresponding path program 5 times [2024-11-08 17:38:02,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:38:02,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370083269] [2024-11-08 17:38:02,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:38:02,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:38:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:38:03,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:38:03,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:38:03,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370083269] [2024-11-08 17:38:03,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370083269] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:38:03,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933356971] [2024-11-08 17:38:03,293 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 17:38:03,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:38:03,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0db606e-d881-4492-9f72-3f84adea2a50/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:38:03,296 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0db606e-d881-4492-9f72-3f84adea2a50/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:38:03,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0db606e-d881-4492-9f72-3f84adea2a50/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:38:03,424 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-08 17:38:03,425 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:38:03,427 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 17:38:03,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:38:03,538 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:38:03,539 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:38:03,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:38:03,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933356971] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:38:03,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:38:03,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2024-11-08 17:38:03,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550407665] [2024-11-08 17:38:03,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:38:03,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 17:38:03,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:38:03,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 17:38:03,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-08 17:38:03,805 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 68 [2024-11-08 17:38:03,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 190 transitions, 1706 flow. Second operand has 13 states, 13 states have (on average 30.846153846153847) internal successors, (401), 13 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:38:03,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:38:03,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 68 [2024-11-08 17:38:03,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand