./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/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_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/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_2855ba6f-c605-4ab1-b207-825b9082c084/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 8d3b4a56bf20a7e5cb147a14169234a27b247cfdef3db9f4b8a4f4a17cd6fe47 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:39:08,779 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:39:08,876 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 17:39:08,886 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:39:08,887 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:39:08,925 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:39:08,927 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:39:08,929 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:39:08,929 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:39:08,931 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:39:08,932 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:39:08,932 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:39:08,933 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:39:08,933 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:39:08,936 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:39:08,936 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:39:08,937 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:39:08,937 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:39:08,937 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:39:08,937 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:39:08,938 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:39:08,942 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:39:08,943 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:39:08,943 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:39:08,943 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:39:08,943 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:39:08,944 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:39:08,944 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:39:08,944 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:39:08,944 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:39:08,945 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:39:08,945 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:39:08,945 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:39:08,946 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:39:08,947 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:39:08,948 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:39:08,948 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:39:08,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:39:08,949 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:39:08,949 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:39:08,949 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:39:08,950 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:39:08,950 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_2855ba6f-c605-4ab1-b207-825b9082c084/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d3b4a56bf20a7e5cb147a14169234a27b247cfdef3db9f4b8a4f4a17cd6fe47 [2024-11-08 17:39:09,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:39:09,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:39:09,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:39:09,233 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:39:09,234 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:39:09,235 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c Unable to find full path for "g++" [2024-11-08 17:39:11,393 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:39:11,626 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:39:11,626 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2024-11-08 17:39:11,639 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/data/4a4769173/4ee1daa5f8244e9f80d61eeb02d532bf/FLAG4202c2ae0 [2024-11-08 17:39:11,656 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/data/4a4769173/4ee1daa5f8244e9f80d61eeb02d532bf [2024-11-08 17:39:11,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:39:11,661 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:39:11,662 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:39:11,663 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:39:11,671 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:39:11,672 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:39:11" (1/1) ... [2024-11-08 17:39:11,673 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bf8b8f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:39:11, skipping insertion in model container [2024-11-08 17:39:11,676 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:39:11" (1/1) ... [2024-11-08 17:39:11,708 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:39:11,946 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_2855ba6f-c605-4ab1-b207-825b9082c084/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c[4284,4297] [2024-11-08 17:39:11,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:39:11,985 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:39:12,032 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_2855ba6f-c605-4ab1-b207-825b9082c084/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c[4284,4297] [2024-11-08 17:39:12,042 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:39:12,073 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:39:12,078 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:39:12 WrapperNode [2024-11-08 17:39:12,078 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:39:12,079 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:39:12,080 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:39:12,080 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:39:12,089 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:39:12" (1/1) ... [2024-11-08 17:39:12,107 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:39:12" (1/1) ... [2024-11-08 17:39:12,164 INFO L138 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 329 [2024-11-08 17:39:12,164 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:39:12,165 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:39:12,165 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:39:12,166 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:39:12,180 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:39:12" (1/1) ... [2024-11-08 17:39:12,180 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:39:12" (1/1) ... [2024-11-08 17:39:12,185 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:39:12" (1/1) ... [2024-11-08 17:39:12,205 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-08 17:39:12,206 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:39:12" (1/1) ... [2024-11-08 17:39:12,206 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:39:12" (1/1) ... [2024-11-08 17:39:12,217 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:39:12" (1/1) ... [2024-11-08 17:39:12,223 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:39:12" (1/1) ... [2024-11-08 17:39:12,225 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:39:12" (1/1) ... [2024-11-08 17:39:12,227 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:39:12" (1/1) ... [2024-11-08 17:39:12,231 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:39:12,233 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:39:12,233 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:39:12,233 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:39:12,234 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:39:12" (1/1) ... [2024-11-08 17:39:12,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:39:12,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:39:12,273 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:39:12,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:39:12,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:39:12,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 17:39:12,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 17:39:12,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 17:39:12,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 17:39:12,314 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 17:39:12,314 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 17:39:12,314 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 17:39:12,314 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 17:39:12,315 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 17:39:12,315 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 17:39:12,315 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-08 17:39:12,315 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-08 17:39:12,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:39:12,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 17:39:12,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 17:39:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 17:39:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 17:39:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:39:12,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:39:12,331 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 17:39:12,483 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:39:12,486 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:39:13,131 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 17:39:13,131 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:39:13,679 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:39:13,679 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 17:39:13,680 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:39:13 BoogieIcfgContainer [2024-11-08 17:39:13,680 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:39:13,684 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:39:13,684 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:39:13,689 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:39:13,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:39:11" (1/3) ... [2024-11-08 17:39:13,691 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c347cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:39:13, skipping insertion in model container [2024-11-08 17:39:13,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:39:12" (2/3) ... [2024-11-08 17:39:13,693 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c347cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:39:13, skipping insertion in model container [2024-11-08 17:39:13,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:39:13" (3/3) ... [2024-11-08 17:39:13,695 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series2.wvr.c [2024-11-08 17:39:13,717 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:39:13,718 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 17:39:13,718 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 17:39:13,818 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-08 17:39:13,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 71 transitions, 170 flow [2024-11-08 17:39:13,921 INFO L124 PetriNetUnfolderBase]: 14/67 cut-off events. [2024-11-08 17:39:13,921 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-08 17:39:13,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 67 events. 14/67 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 126 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2024-11-08 17:39:13,925 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 71 transitions, 170 flow [2024-11-08 17:39:13,930 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 66 transitions, 156 flow [2024-11-08 17:39:13,940 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:39:13,948 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;@1a2a4f3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:39:13,948 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-08 17:39:13,972 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:39:13,972 INFO L124 PetriNetUnfolderBase]: 14/65 cut-off events. [2024-11-08 17:39:13,972 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-08 17:39:13,973 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:39:13,973 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] [2024-11-08 17:39:13,974 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 17:39:13,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:39:13,980 INFO L85 PathProgramCache]: Analyzing trace with hash 535515236, now seen corresponding path program 1 times [2024-11-08 17:39:13,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:39:13,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530999221] [2024-11-08 17:39:13,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:39:13,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:39:14,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:39:14,486 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 17:39:14,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:39:14,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530999221] [2024-11-08 17:39:14,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530999221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:39:14,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:39:14,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:39:14,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534360124] [2024-11-08 17:39:14,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:39:14,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:39:14,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:39:14,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:39:14,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:39:14,548 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 71 [2024-11-08 17:39:14,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 66 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 17:39:14,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:39:14,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 71 [2024-11-08 17:39:14,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:39:15,198 INFO L124 PetriNetUnfolderBase]: 1193/2243 cut-off events. [2024-11-08 17:39:15,198 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2024-11-08 17:39:15,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3800 conditions, 2243 events. 1193/2243 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 15127 event pairs, 252 based on Foata normal form. 1/1789 useless extension candidates. Maximal degree in co-relation 3210. Up to 989 conditions per place. [2024-11-08 17:39:15,241 INFO L140 encePairwiseOnDemand]: 67/71 looper letters, 39 selfloop transitions, 3 changer transitions 1/81 dead transitions. [2024-11-08 17:39:15,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 81 transitions, 287 flow [2024-11-08 17:39:15,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:39:15,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:39:15,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 170 transitions. [2024-11-08 17:39:15,258 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7981220657276995 [2024-11-08 17:39:15,261 INFO L175 Difference]: Start difference. First operand has 65 places, 66 transitions, 156 flow. Second operand 3 states and 170 transitions. [2024-11-08 17:39:15,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 81 transitions, 287 flow [2024-11-08 17:39:15,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 81 transitions, 261 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-08 17:39:15,278 INFO L231 Difference]: Finished difference. Result has 60 places, 68 transitions, 159 flow [2024-11-08 17:39:15,281 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=60, PETRI_TRANSITIONS=68} [2024-11-08 17:39:15,287 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, -5 predicate places. [2024-11-08 17:39:15,287 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 68 transitions, 159 flow [2024-11-08 17:39:15,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 17:39:15,288 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:39:15,288 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] [2024-11-08 17:39:15,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:39:15,289 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 17:39:15,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:39:15,290 INFO L85 PathProgramCache]: Analyzing trace with hash 421338050, now seen corresponding path program 1 times [2024-11-08 17:39:15,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:39:15,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327759697] [2024-11-08 17:39:15,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:39:15,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:39:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:39:15,561 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 17:39:15,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:39:15,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327759697] [2024-11-08 17:39:15,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327759697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:39:15,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:39:15,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:39:15,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689053116] [2024-11-08 17:39:15,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:39:15,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:39:15,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:39:15,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:39:15,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:39:15,571 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 71 [2024-11-08 17:39:15,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 68 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 17:39:15,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:39:15,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 71 [2024-11-08 17:39:15,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:39:16,012 INFO L124 PetriNetUnfolderBase]: 1350/2394 cut-off events. [2024-11-08 17:39:16,012 INFO L125 PetriNetUnfolderBase]: For 376/376 co-relation queries the response was YES. [2024-11-08 17:39:16,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4526 conditions, 2394 events. 1350/2394 cut-off events. For 376/376 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 15206 event pairs, 362 based on Foata normal form. 55/2027 useless extension candidates. Maximal degree in co-relation 1660. Up to 1131 conditions per place. [2024-11-08 17:39:16,038 INFO L140 encePairwiseOnDemand]: 68/71 looper letters, 48 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2024-11-08 17:39:16,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 88 transitions, 313 flow [2024-11-08 17:39:16,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:39:16,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:39:16,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2024-11-08 17:39:16,043 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8169014084507042 [2024-11-08 17:39:16,044 INFO L175 Difference]: Start difference. First operand has 60 places, 68 transitions, 159 flow. Second operand 3 states and 174 transitions. [2024-11-08 17:39:16,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 88 transitions, 313 flow [2024-11-08 17:39:16,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 88 transitions, 309 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:39:16,048 INFO L231 Difference]: Finished difference. Result has 62 places, 69 transitions, 170 flow [2024-11-08 17:39:16,049 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=62, PETRI_TRANSITIONS=69} [2024-11-08 17:39:16,050 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, -3 predicate places. [2024-11-08 17:39:16,050 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 69 transitions, 170 flow [2024-11-08 17:39:16,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 17:39:16,051 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:39:16,051 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] [2024-11-08 17:39:16,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:39:16,052 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 17:39:16,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:39:16,052 INFO L85 PathProgramCache]: Analyzing trace with hash 97839828, now seen corresponding path program 1 times [2024-11-08 17:39:16,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:39:16,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391685419] [2024-11-08 17:39:16,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:39:16,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:39:16,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:39:16,271 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 17:39:16,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:39:16,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391685419] [2024-11-08 17:39:16,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391685419] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:39:16,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:39:16,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:39:16,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018503553] [2024-11-08 17:39:16,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:39:16,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:39:16,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:39:16,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:39:16,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:39:16,286 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 71 [2024-11-08 17:39:16,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 69 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 17:39:16,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:39:16,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 71 [2024-11-08 17:39:16,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:39:16,791 INFO L124 PetriNetUnfolderBase]: 1604/2871 cut-off events. [2024-11-08 17:39:16,792 INFO L125 PetriNetUnfolderBase]: For 866/866 co-relation queries the response was YES. [2024-11-08 17:39:16,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5594 conditions, 2871 events. 1604/2871 cut-off events. For 866/866 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 18369 event pairs, 399 based on Foata normal form. 24/2388 useless extension candidates. Maximal degree in co-relation 3691. Up to 1290 conditions per place. [2024-11-08 17:39:16,823 INFO L140 encePairwiseOnDemand]: 68/71 looper letters, 48 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2024-11-08 17:39:16,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 88 transitions, 329 flow [2024-11-08 17:39:16,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:39:16,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:39:16,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 172 transitions. [2024-11-08 17:39:16,825 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8075117370892019 [2024-11-08 17:39:16,826 INFO L175 Difference]: Start difference. First operand has 62 places, 69 transitions, 170 flow. Second operand 3 states and 172 transitions. [2024-11-08 17:39:16,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 88 transitions, 329 flow [2024-11-08 17:39:16,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 88 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:39:16,832 INFO L231 Difference]: Finished difference. Result has 64 places, 70 transitions, 182 flow [2024-11-08 17:39:16,834 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=64, PETRI_TRANSITIONS=70} [2024-11-08 17:39:16,835 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, -1 predicate places. [2024-11-08 17:39:16,836 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 70 transitions, 182 flow [2024-11-08 17:39:16,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 17:39:16,837 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:39:16,837 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] [2024-11-08 17:39:16,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:39:16,838 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 17:39:16,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:39:16,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1609496880, now seen corresponding path program 1 times [2024-11-08 17:39:16,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:39:16,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599306954] [2024-11-08 17:39:16,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:39:16,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:39:16,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:39:17,124 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 17:39:17,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:39:17,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599306954] [2024-11-08 17:39:17,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599306954] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:39:17,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:39:17,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:39:17,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661083110] [2024-11-08 17:39:17,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:39:17,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:39:17,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:39:17,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:39:17,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:39:17,180 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 71 [2024-11-08 17:39:17,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 70 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 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 17:39:17,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:39:17,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 71 [2024-11-08 17:39:17,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:39:17,771 INFO L124 PetriNetUnfolderBase]: 1918/3269 cut-off events. [2024-11-08 17:39:17,771 INFO L125 PetriNetUnfolderBase]: For 1450/1450 co-relation queries the response was YES. [2024-11-08 17:39:17,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7110 conditions, 3269 events. 1918/3269 cut-off events. For 1450/1450 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 21732 event pairs, 1276 based on Foata normal form. 70/2656 useless extension candidates. Maximal degree in co-relation 3725. Up to 1903 conditions per place. [2024-11-08 17:39:17,806 INFO L140 encePairwiseOnDemand]: 65/71 looper letters, 66 selfloop transitions, 5 changer transitions 0/103 dead transitions. [2024-11-08 17:39:17,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 103 transitions, 413 flow [2024-11-08 17:39:17,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:39:17,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:39:17,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 246 transitions. [2024-11-08 17:39:17,809 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6929577464788732 [2024-11-08 17:39:17,809 INFO L175 Difference]: Start difference. First operand has 64 places, 70 transitions, 182 flow. Second operand 5 states and 246 transitions. [2024-11-08 17:39:17,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 103 transitions, 413 flow [2024-11-08 17:39:17,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 103 transitions, 410 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:39:17,813 INFO L231 Difference]: Finished difference. Result has 70 places, 74 transitions, 216 flow [2024-11-08 17:39:17,814 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=216, PETRI_PLACES=70, PETRI_TRANSITIONS=74} [2024-11-08 17:39:17,816 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 5 predicate places. [2024-11-08 17:39:17,817 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 74 transitions, 216 flow [2024-11-08 17:39:17,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 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 17:39:17,817 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:39:17,817 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] [2024-11-08 17:39:17,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 17:39:17,818 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 17:39:17,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:39:17,819 INFO L85 PathProgramCache]: Analyzing trace with hash -245570352, now seen corresponding path program 1 times [2024-11-08 17:39:17,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:39:17,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167591136] [2024-11-08 17:39:17,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:39:17,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:39:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:39:18,138 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 17:39:18,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:39:18,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167591136] [2024-11-08 17:39:18,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167591136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:39:18,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:39:18,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:39:18,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082822548] [2024-11-08 17:39:18,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:39:18,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:39:18,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:39:18,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:39:18,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:39:18,166 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 71 [2024-11-08 17:39:18,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 74 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 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 17:39:18,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:39:18,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 71 [2024-11-08 17:39:18,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:39:18,940 INFO L124 PetriNetUnfolderBase]: 2517/4458 cut-off events. [2024-11-08 17:39:18,941 INFO L125 PetriNetUnfolderBase]: For 1975/1975 co-relation queries the response was YES. [2024-11-08 17:39:18,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9397 conditions, 4458 events. 2517/4458 cut-off events. For 1975/1975 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 32306 event pairs, 1724 based on Foata normal form. 106/3623 useless extension candidates. Maximal degree in co-relation 7276. Up to 2501 conditions per place. [2024-11-08 17:39:18,980 INFO L140 encePairwiseOnDemand]: 64/71 looper letters, 68 selfloop transitions, 7 changer transitions 0/107 dead transitions. [2024-11-08 17:39:18,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 107 transitions, 456 flow [2024-11-08 17:39:18,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:39:18,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:39:18,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 246 transitions. [2024-11-08 17:39:18,983 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6929577464788732 [2024-11-08 17:39:18,983 INFO L175 Difference]: Start difference. First operand has 70 places, 74 transitions, 216 flow. Second operand 5 states and 246 transitions. [2024-11-08 17:39:18,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 107 transitions, 456 flow [2024-11-08 17:39:18,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 107 transitions, 454 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:39:18,989 INFO L231 Difference]: Finished difference. Result has 76 places, 79 transitions, 261 flow [2024-11-08 17:39:18,990 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=261, PETRI_PLACES=76, PETRI_TRANSITIONS=79} [2024-11-08 17:39:18,992 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 11 predicate places. [2024-11-08 17:39:18,994 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 79 transitions, 261 flow [2024-11-08 17:39:18,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 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 17:39:18,994 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:39:18,995 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, 1] [2024-11-08 17:39:18,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 17:39:18,995 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 17:39:18,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:39:18,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1726530932, now seen corresponding path program 1 times [2024-11-08 17:39:18,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:39:18,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338317076] [2024-11-08 17:39:18,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:39:18,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:39:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:39:19,466 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 17:39:19,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:39:19,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338317076] [2024-11-08 17:39:19,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338317076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:39:19,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:39:19,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:39:19,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427490112] [2024-11-08 17:39:19,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:39:19,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:39:19,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:39:19,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:39:19,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:39:19,559 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 71 [2024-11-08 17:39:19,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 79 transitions, 261 flow. Second operand has 6 states, 6 states have (on average 37.166666666666664) internal successors, (223), 6 states have internal predecessors, (223), 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 17:39:19,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:39:19,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 71 [2024-11-08 17:39:19,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:39:21,633 INFO L124 PetriNetUnfolderBase]: 7762/13139 cut-off events. [2024-11-08 17:39:21,634 INFO L125 PetriNetUnfolderBase]: For 4764/4920 co-relation queries the response was YES. [2024-11-08 17:39:21,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27340 conditions, 13139 events. 7762/13139 cut-off events. For 4764/4920 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 102845 event pairs, 3307 based on Foata normal form. 214/11428 useless extension candidates. Maximal degree in co-relation 19142. Up to 3915 conditions per place. [2024-11-08 17:39:21,770 INFO L140 encePairwiseOnDemand]: 62/71 looper letters, 103 selfloop transitions, 9 changer transitions 1/141 dead transitions. [2024-11-08 17:39:21,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 141 transitions, 679 flow [2024-11-08 17:39:21,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:39:21,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 17:39:21,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 320 transitions. [2024-11-08 17:39:21,773 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6438631790744467 [2024-11-08 17:39:21,773 INFO L175 Difference]: Start difference. First operand has 76 places, 79 transitions, 261 flow. Second operand 7 states and 320 transitions. [2024-11-08 17:39:21,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 141 transitions, 679 flow [2024-11-08 17:39:21,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 141 transitions, 676 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:39:21,778 INFO L231 Difference]: Finished difference. Result has 85 places, 83 transitions, 307 flow [2024-11-08 17:39:21,778 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=307, PETRI_PLACES=85, PETRI_TRANSITIONS=83} [2024-11-08 17:39:21,779 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 20 predicate places. [2024-11-08 17:39:21,779 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 83 transitions, 307 flow [2024-11-08 17:39:21,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.166666666666664) internal successors, (223), 6 states have internal predecessors, (223), 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 17:39:21,780 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:39:21,780 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, 1] [2024-11-08 17:39:21,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 17:39:21,780 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 17:39:21,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:39:21,781 INFO L85 PathProgramCache]: Analyzing trace with hash -610107746, now seen corresponding path program 1 times [2024-11-08 17:39:21,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:39:21,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49237475] [2024-11-08 17:39:21,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:39:21,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:39:21,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:39:22,248 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 17:39:22,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:39:22,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49237475] [2024-11-08 17:39:22,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49237475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:39:22,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:39:22,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:39:22,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598249310] [2024-11-08 17:39:22,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:39:22,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:39:22,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:39:22,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:39:22,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:39:22,323 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 71 [2024-11-08 17:39:22,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 83 transitions, 307 flow. Second operand has 6 states, 6 states have (on average 37.166666666666664) internal successors, (223), 6 states have internal predecessors, (223), 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 17:39:22,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:39:22,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 71 [2024-11-08 17:39:22,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:39:23,937 INFO L124 PetriNetUnfolderBase]: 6882/10985 cut-off events. [2024-11-08 17:39:23,937 INFO L125 PetriNetUnfolderBase]: For 5184/5448 co-relation queries the response was YES. [2024-11-08 17:39:23,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23913 conditions, 10985 events. 6882/10985 cut-off events. For 5184/5448 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 80191 event pairs, 2907 based on Foata normal form. 80/9684 useless extension candidates. Maximal degree in co-relation 18410. Up to 4523 conditions per place. [2024-11-08 17:39:24,034 INFO L140 encePairwiseOnDemand]: 62/71 looper letters, 66 selfloop transitions, 5 changer transitions 30/129 dead transitions. [2024-11-08 17:39:24,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 129 transitions, 634 flow [2024-11-08 17:39:24,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:39:24,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 17:39:24,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2024-11-08 17:39:24,041 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6277665995975855 [2024-11-08 17:39:24,041 INFO L175 Difference]: Start difference. First operand has 85 places, 83 transitions, 307 flow. Second operand 7 states and 312 transitions. [2024-11-08 17:39:24,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 129 transitions, 634 flow [2024-11-08 17:39:24,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 129 transitions, 628 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 17:39:24,047 INFO L231 Difference]: Finished difference. Result has 91 places, 79 transitions, 291 flow [2024-11-08 17:39:24,048 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=291, PETRI_PLACES=91, PETRI_TRANSITIONS=79} [2024-11-08 17:39:24,048 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 26 predicate places. [2024-11-08 17:39:24,049 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 79 transitions, 291 flow [2024-11-08 17:39:24,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.166666666666664) internal successors, (223), 6 states have internal predecessors, (223), 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 17:39:24,049 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:39:24,049 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, 1, 1, 1] [2024-11-08 17:39:24,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 17:39:24,050 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 17:39:24,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:39:24,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1795084826, now seen corresponding path program 1 times [2024-11-08 17:39:24,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:39:24,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525466569] [2024-11-08 17:39:24,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:39:24,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:39:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:39:24,471 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 17:39:24,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:39:24,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525466569] [2024-11-08 17:39:24,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525466569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:39:24,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:39:24,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:39:24,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847804235] [2024-11-08 17:39:24,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:39:24,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:39:24,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:39:24,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:39:24,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:39:24,566 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 71 [2024-11-08 17:39:24,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 79 transitions, 291 flow. Second operand has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 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 17:39:24,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:39:24,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 71 [2024-11-08 17:39:24,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:39:25,533 INFO L124 PetriNetUnfolderBase]: 3833/6592 cut-off events. [2024-11-08 17:39:25,534 INFO L125 PetriNetUnfolderBase]: For 3693/3693 co-relation queries the response was YES. [2024-11-08 17:39:25,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14598 conditions, 6592 events. 3833/6592 cut-off events. For 3693/3693 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 45357 event pairs, 575 based on Foata normal form. 496/6441 useless extension candidates. Maximal degree in co-relation 11295. Up to 3345 conditions per place. [2024-11-08 17:39:25,606 INFO L140 encePairwiseOnDemand]: 64/71 looper letters, 65 selfloop transitions, 5 changer transitions 3/106 dead transitions. [2024-11-08 17:39:25,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 106 transitions, 521 flow [2024-11-08 17:39:25,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:39:25,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 17:39:25,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 271 transitions. [2024-11-08 17:39:25,608 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.636150234741784 [2024-11-08 17:39:25,609 INFO L175 Difference]: Start difference. First operand has 91 places, 79 transitions, 291 flow. Second operand 6 states and 271 transitions. [2024-11-08 17:39:25,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 106 transitions, 521 flow [2024-11-08 17:39:25,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 106 transitions, 502 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-08 17:39:25,617 INFO L231 Difference]: Finished difference. Result has 84 places, 77 transitions, 272 flow [2024-11-08 17:39:25,618 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=272, PETRI_PLACES=84, PETRI_TRANSITIONS=77} [2024-11-08 17:39:25,619 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 19 predicate places. [2024-11-08 17:39:25,619 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 77 transitions, 272 flow [2024-11-08 17:39:25,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 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 17:39:25,623 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:39:25,624 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, 1, 1, 1] [2024-11-08 17:39:25,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 17:39:25,624 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 17:39:25,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:39:25,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1198409792, now seen corresponding path program 1 times [2024-11-08 17:39:25,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:39:25,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392470168] [2024-11-08 17:39:25,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:39:25,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:39:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:39:26,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 17:39:26,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:39:26,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392470168] [2024-11-08 17:39:26,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392470168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:39:26,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:39:26,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:39:26,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167117906] [2024-11-08 17:39:26,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:39:26,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:39:26,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:39:26,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:39:26,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:39:26,094 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 71 [2024-11-08 17:39:26,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 77 transitions, 272 flow. Second operand has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 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 17:39:26,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:39:26,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 71 [2024-11-08 17:39:26,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:39:26,664 INFO L124 PetriNetUnfolderBase]: 2213/3770 cut-off events. [2024-11-08 17:39:26,665 INFO L125 PetriNetUnfolderBase]: For 2678/2678 co-relation queries the response was YES. [2024-11-08 17:39:26,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8695 conditions, 3770 events. 2213/3770 cut-off events. For 2678/2678 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 23422 event pairs, 281 based on Foata normal form. 240/3650 useless extension candidates. Maximal degree in co-relation 7397. Up to 1999 conditions per place. [2024-11-08 17:39:26,699 INFO L140 encePairwiseOnDemand]: 64/71 looper letters, 66 selfloop transitions, 5 changer transitions 3/105 dead transitions. [2024-11-08 17:39:26,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 105 transitions, 512 flow [2024-11-08 17:39:26,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:39:26,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 17:39:26,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 273 transitions. [2024-11-08 17:39:26,701 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6408450704225352 [2024-11-08 17:39:26,701 INFO L175 Difference]: Start difference. First operand has 84 places, 77 transitions, 272 flow. Second operand 6 states and 273 transitions. [2024-11-08 17:39:26,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 105 transitions, 512 flow [2024-11-08 17:39:26,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 105 transitions, 488 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-11-08 17:39:26,705 INFO L231 Difference]: Finished difference. Result has 82 places, 74 transitions, 252 flow [2024-11-08 17:39:26,706 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=252, PETRI_PLACES=82, PETRI_TRANSITIONS=74} [2024-11-08 17:39:26,707 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 17 predicate places. [2024-11-08 17:39:26,708 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 74 transitions, 252 flow [2024-11-08 17:39:26,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 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 17:39:26,708 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:39:26,709 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:39:26,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 17:39:26,710 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 17:39:26,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:39:26,710 INFO L85 PathProgramCache]: Analyzing trace with hash 334538154, now seen corresponding path program 1 times [2024-11-08 17:39:26,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:39:26,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116645903] [2024-11-08 17:39:26,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:39:26,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:39:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:39:27,028 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 17:39:27,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:39:27,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116645903] [2024-11-08 17:39:27,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116645903] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:39:27,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126155293] [2024-11-08 17:39:27,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:39:27,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:39:27,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:39:27,037 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:39:27,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:39:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:39:27,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 17:39:27,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:39:27,355 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 17:39:27,355 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:39:27,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126155293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:39:27,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:39:27,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-08 17:39:27,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809382054] [2024-11-08 17:39:27,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:39:27,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:39:27,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:39:27,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:39:27,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:39:27,374 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 71 [2024-11-08 17:39:27,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 74 transitions, 252 flow. Second operand has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 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 17:39:27,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:39:27,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 71 [2024-11-08 17:39:27,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:39:28,284 INFO L124 PetriNetUnfolderBase]: 2993/4887 cut-off events. [2024-11-08 17:39:28,284 INFO L125 PetriNetUnfolderBase]: For 3323/3323 co-relation queries the response was YES. [2024-11-08 17:39:28,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11559 conditions, 4887 events. 2993/4887 cut-off events. For 3323/3323 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 30845 event pairs, 411 based on Foata normal form. 146/4957 useless extension candidates. Maximal degree in co-relation 11527. Up to 1649 conditions per place. [2024-11-08 17:39:28,344 INFO L140 encePairwiseOnDemand]: 64/71 looper letters, 79 selfloop transitions, 11 changer transitions 0/125 dead transitions. [2024-11-08 17:39:28,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 125 transitions, 613 flow [2024-11-08 17:39:28,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:39:28,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 17:39:28,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 307 transitions. [2024-11-08 17:39:28,346 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7206572769953051 [2024-11-08 17:39:28,346 INFO L175 Difference]: Start difference. First operand has 82 places, 74 transitions, 252 flow. Second operand 6 states and 307 transitions. [2024-11-08 17:39:28,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 125 transitions, 613 flow [2024-11-08 17:39:28,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 125 transitions, 585 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-11-08 17:39:28,351 INFO L231 Difference]: Finished difference. Result has 82 places, 82 transitions, 327 flow [2024-11-08 17:39:28,352 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=327, PETRI_PLACES=82, PETRI_TRANSITIONS=82} [2024-11-08 17:39:28,352 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 17 predicate places. [2024-11-08 17:39:28,352 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 82 transitions, 327 flow [2024-11-08 17:39:28,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 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 17:39:28,353 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:39:28,353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:39:28,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 17:39:28,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 17:39:28,554 INFO L396 AbstractCegarLoop]: === Iteration 11 === 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 17:39:28,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:39:28,556 INFO L85 PathProgramCache]: Analyzing trace with hash 295909238, now seen corresponding path program 2 times [2024-11-08 17:39:28,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:39:28,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332903270] [2024-11-08 17:39:28,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:39:28,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:39:28,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:39:29,125 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 17:39:29,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:39:29,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332903270] [2024-11-08 17:39:29,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332903270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:39:29,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:39:29,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:39:29,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304850658] [2024-11-08 17:39:29,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:39:29,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:39:29,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:39:29,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:39:29,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:39:29,238 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 71 [2024-11-08 17:39:29,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 82 transitions, 327 flow. Second operand has 6 states, 6 states have (on average 40.333333333333336) internal successors, (242), 6 states have internal predecessors, (242), 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 17:39:29,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:39:29,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 71 [2024-11-08 17:39:29,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:39:30,170 INFO L124 PetriNetUnfolderBase]: 2927/4751 cut-off events. [2024-11-08 17:39:30,171 INFO L125 PetriNetUnfolderBase]: For 5861/5879 co-relation queries the response was YES. [2024-11-08 17:39:30,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12992 conditions, 4751 events. 2927/4751 cut-off events. For 5861/5879 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 29481 event pairs, 316 based on Foata normal form. 156/4731 useless extension candidates. Maximal degree in co-relation 12957. Up to 2813 conditions per place. [2024-11-08 17:39:30,227 INFO L140 encePairwiseOnDemand]: 63/71 looper letters, 80 selfloop transitions, 8 changer transitions 0/119 dead transitions. [2024-11-08 17:39:30,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 119 transitions, 658 flow [2024-11-08 17:39:30,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:39:30,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 17:39:30,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 316 transitions. [2024-11-08 17:39:30,231 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.635814889336016 [2024-11-08 17:39:30,231 INFO L175 Difference]: Start difference. First operand has 82 places, 82 transitions, 327 flow. Second operand 7 states and 316 transitions. [2024-11-08 17:39:30,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 119 transitions, 658 flow [2024-11-08 17:39:30,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 119 transitions, 653 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-08 17:39:30,240 INFO L231 Difference]: Finished difference. Result has 89 places, 85 transitions, 376 flow [2024-11-08 17:39:30,240 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=376, PETRI_PLACES=89, PETRI_TRANSITIONS=85} [2024-11-08 17:39:30,241 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 24 predicate places. [2024-11-08 17:39:30,241 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 85 transitions, 376 flow [2024-11-08 17:39:30,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.333333333333336) internal successors, (242), 6 states have internal predecessors, (242), 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 17:39:30,242 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:39:30,242 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:39:30,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 17:39:30,242 INFO L396 AbstractCegarLoop]: === Iteration 12 === 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 17:39:30,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:39:30,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1244054386, now seen corresponding path program 1 times [2024-11-08 17:39:30,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:39:30,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270887812] [2024-11-08 17:39:30,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:39:30,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:39:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:39:30,574 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 17:39:30,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:39:30,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270887812] [2024-11-08 17:39:30,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270887812] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:39:30,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703153421] [2024-11-08 17:39:30,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:39:30,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:39:30,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:39:30,578 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:39:30,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:39:30,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:39:30,742 INFO L255 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 17:39:30,747 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:39:30,836 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 17:39:30,836 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:39:30,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703153421] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:39:30,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:39:30,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-08 17:39:30,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298227700] [2024-11-08 17:39:30,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:39:30,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:39:30,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:39:30,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:39:30,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:39:30,854 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 71 [2024-11-08 17:39:30,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 85 transitions, 376 flow. Second operand has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 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 17:39:30,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:39:30,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 71 [2024-11-08 17:39:30,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:39:32,974 INFO L124 PetriNetUnfolderBase]: 7644/12909 cut-off events. [2024-11-08 17:39:32,975 INFO L125 PetriNetUnfolderBase]: For 22926/23389 co-relation queries the response was YES. [2024-11-08 17:39:33,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34652 conditions, 12909 events. 7644/12909 cut-off events. For 22926/23389 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 95408 event pairs, 1146 based on Foata normal form. 569/13159 useless extension candidates. Maximal degree in co-relation 34616. Up to 3725 conditions per place. [2024-11-08 17:39:33,065 INFO L140 encePairwiseOnDemand]: 64/71 looper letters, 106 selfloop transitions, 11 changer transitions 0/157 dead transitions. [2024-11-08 17:39:33,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 157 transitions, 991 flow [2024-11-08 17:39:33,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:39:33,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 17:39:33,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 311 transitions. [2024-11-08 17:39:33,067 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7300469483568075 [2024-11-08 17:39:33,067 INFO L175 Difference]: Start difference. First operand has 89 places, 85 transitions, 376 flow. Second operand 6 states and 311 transitions. [2024-11-08 17:39:33,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 157 transitions, 991 flow [2024-11-08 17:39:33,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 157 transitions, 978 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-08 17:39:33,090 INFO L231 Difference]: Finished difference. Result has 95 places, 93 transitions, 457 flow [2024-11-08 17:39:33,091 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=457, PETRI_PLACES=95, PETRI_TRANSITIONS=93} [2024-11-08 17:39:33,091 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 30 predicate places. [2024-11-08 17:39:33,091 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 93 transitions, 457 flow [2024-11-08 17:39:33,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 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 17:39:33,092 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:39:33,092 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:39:33,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 17:39:33,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:39:33,293 INFO L396 AbstractCegarLoop]: === Iteration 13 === 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 17:39:33,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:39:33,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1585718014, now seen corresponding path program 2 times [2024-11-08 17:39:33,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:39:33,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653729941] [2024-11-08 17:39:33,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:39:33,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:39:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:39:33,731 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 17:39:33,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:39:33,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653729941] [2024-11-08 17:39:33,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653729941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:39:33,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:39:33,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:39:33,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389513124] [2024-11-08 17:39:33,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:39:33,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:39:33,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:39:33,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:39:33,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:39:33,828 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 71 [2024-11-08 17:39:33,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 93 transitions, 457 flow. Second operand has 6 states, 6 states have (on average 40.333333333333336) internal successors, (242), 6 states have internal predecessors, (242), 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 17:39:33,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:39:33,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 71 [2024-11-08 17:39:33,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:39:35,852 INFO L124 PetriNetUnfolderBase]: 8339/14116 cut-off events. [2024-11-08 17:39:35,852 INFO L125 PetriNetUnfolderBase]: For 34235/34584 co-relation queries the response was YES. [2024-11-08 17:39:35,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43680 conditions, 14116 events. 8339/14116 cut-off events. For 34235/34584 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 104531 event pairs, 1774 based on Foata normal form. 595/14307 useless extension candidates. Maximal degree in co-relation 43638. Up to 7839 conditions per place. [2024-11-08 17:39:35,974 INFO L140 encePairwiseOnDemand]: 63/71 looper letters, 107 selfloop transitions, 8 changer transitions 0/151 dead transitions. [2024-11-08 17:39:35,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 151 transitions, 1064 flow [2024-11-08 17:39:35,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:39:35,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 17:39:35,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 319 transitions. [2024-11-08 17:39:35,976 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.641851106639839 [2024-11-08 17:39:35,976 INFO L175 Difference]: Start difference. First operand has 95 places, 93 transitions, 457 flow. Second operand 7 states and 319 transitions. [2024-11-08 17:39:35,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 151 transitions, 1064 flow [2024-11-08 17:39:36,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 151 transitions, 1061 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-08 17:39:36,037 INFO L231 Difference]: Finished difference. Result has 102 places, 96 transitions, 508 flow [2024-11-08 17:39:36,037 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=508, PETRI_PLACES=102, PETRI_TRANSITIONS=96} [2024-11-08 17:39:36,038 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 37 predicate places. [2024-11-08 17:39:36,038 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 96 transitions, 508 flow [2024-11-08 17:39:36,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.333333333333336) internal successors, (242), 6 states have internal predecessors, (242), 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 17:39:36,038 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:39:36,038 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:39:36,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 17:39:36,039 INFO L396 AbstractCegarLoop]: === Iteration 14 === 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 17:39:36,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:39:36,039 INFO L85 PathProgramCache]: Analyzing trace with hash -453720480, now seen corresponding path program 1 times [2024-11-08 17:39:36,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:39:36,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799922995] [2024-11-08 17:39:36,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:39:36,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:39:36,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:39:39,901 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:39:39,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:39:39,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799922995] [2024-11-08 17:39:39,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799922995] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:39:39,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897827084] [2024-11-08 17:39:39,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:39:39,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:39:39,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:39:39,904 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:39:39,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:39:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:39:40,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-08 17:39:40,093 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:39:40,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-08 17:39:40,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-08 17:39:40,536 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 17:39:40,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-08 17:39:40,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-08 17:39:42,155 INFO L349 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2024-11-08 17:39:42,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 42 [2024-11-08 17:39:42,172 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:39:42,173 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:39:51,868 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:39:51,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 155 treesize of output 95 [2024-11-08 17:39:52,051 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:39:52,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 322 treesize of output 478 [2024-11-08 17:39:52,270 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:39:52,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 226 treesize of output 370 [2024-11-08 17:43:38,724 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:43:38,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897827084] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:43:38,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:43:38,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 32 [2024-11-08 17:43:38,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244478842] [2024-11-08 17:43:38,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:43:38,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-08 17:43:38,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:43:38,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-08 17:43:38,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=934, Unknown=7, NotChecked=0, Total=1056 [2024-11-08 17:43:39,973 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 71 [2024-11-08 17:43:39,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 96 transitions, 508 flow. Second operand has 33 states, 33 states have (on average 28.454545454545453) internal successors, (939), 33 states have internal predecessors, (939), 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 17:43:39,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:43:39,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 71 [2024-11-08 17:43:39,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:43:44,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:43:53,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:43:58,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:44:02,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:44:07,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:44:13,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:44:18,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:44:22,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:44:26,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:44:55,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:44:59,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:45:03,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:45:07,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:45:11,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:45:15,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:45:19,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:45:23,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:45:27,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:45:31,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:45:35,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:45:39,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 17:45:41,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2024-11-08 17:45:41,454 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-08 17:45:41,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 17:45:41,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:45:41,656 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:665) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:269) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.CegarLoopForPetriNet.enhanceAnddeterminizeInterpolantAutomaton(CegarLoopForPetriNet.java:485) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.CegarLoopForPetriNet.refineAbstraction(CegarLoopForPetriNet.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 36 more [2024-11-08 17:45:41,661 INFO L158 Benchmark]: Toolchain (without parser) took 389999.37ms. Allocated memory was 127.9MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 92.3MB in the beginning and 624.0MB in the end (delta: -531.7MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-11-08 17:45:41,662 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 127.9MB. Free memory is still 68.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 17:45:41,662 INFO L158 Benchmark]: CACSL2BoogieTranslator took 415.87ms. Allocated memory is still 127.9MB. Free memory was 92.0MB in the beginning and 77.0MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-08 17:45:41,662 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.22ms. Allocated memory is still 127.9MB. Free memory was 77.0MB in the beginning and 74.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 17:45:41,663 INFO L158 Benchmark]: Boogie Preprocessor took 66.50ms. Allocated memory is still 127.9MB. Free memory was 74.2MB in the beginning and 70.7MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 17:45:41,663 INFO L158 Benchmark]: RCFGBuilder took 1447.78ms. Allocated memory was 127.9MB in the beginning and 174.1MB in the end (delta: 46.1MB). Free memory was 70.7MB in the beginning and 125.9MB in the end (delta: -55.2MB). Peak memory consumption was 54.0MB. Max. memory is 16.1GB. [2024-11-08 17:45:41,664 INFO L158 Benchmark]: TraceAbstraction took 387975.45ms. Allocated memory was 174.1MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 125.9MB in the beginning and 624.0MB in the end (delta: -498.2MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-11-08 17:45:41,665 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 127.9MB. Free memory is still 68.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 415.87ms. Allocated memory is still 127.9MB. Free memory was 92.0MB in the beginning and 77.0MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.22ms. Allocated memory is still 127.9MB. Free memory was 77.0MB in the beginning and 74.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.50ms. Allocated memory is still 127.9MB. Free memory was 74.2MB in the beginning and 70.7MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1447.78ms. Allocated memory was 127.9MB in the beginning and 174.1MB in the end (delta: 46.1MB). Free memory was 70.7MB in the beginning and 125.9MB in the end (delta: -55.2MB). Peak memory consumption was 54.0MB. Max. memory is 16.1GB. * TraceAbstraction took 387975.45ms. Allocated memory was 174.1MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 125.9MB in the beginning and 624.0MB in the end (delta: -498.2MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/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_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/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 8d3b4a56bf20a7e5cb147a14169234a27b247cfdef3db9f4b8a4f4a17cd6fe47 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:45:44,224 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:45:44,312 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-08 17:45:44,320 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:45:44,322 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:45:44,362 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:45:44,363 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:45:44,363 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:45:44,364 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:45:44,364 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:45:44,365 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:45:44,366 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:45:44,366 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:45:44,367 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:45:44,367 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:45:44,368 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:45:44,370 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:45:44,371 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:45:44,375 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:45:44,376 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:45:44,376 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:45:44,377 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:45:44,377 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:45:44,377 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 17:45:44,377 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-08 17:45:44,378 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:45:44,378 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-08 17:45:44,378 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:45:44,378 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:45:44,379 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:45:44,379 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:45:44,379 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:45:44,380 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:45:44,380 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:45:44,382 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:45:44,383 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:45:44,384 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:45:44,385 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:45:44,395 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-08 17:45:44,396 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-08 17:45:44,396 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:45:44,399 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:45:44,399 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:45:44,399 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:45:44,400 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_2855ba6f-c605-4ab1-b207-825b9082c084/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d3b4a56bf20a7e5cb147a14169234a27b247cfdef3db9f4b8a4f4a17cd6fe47 [2024-11-08 17:45:44,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:45:44,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:45:44,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:45:44,877 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:45:44,878 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:45:44,880 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c Unable to find full path for "g++" [2024-11-08 17:45:47,184 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:45:47,405 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:45:47,405 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2024-11-08 17:45:47,418 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/data/ce4770417/556919d550c5403cb675fde0af40b9f9/FLAG5a6d6f2e9 [2024-11-08 17:45:47,441 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/data/ce4770417/556919d550c5403cb675fde0af40b9f9 [2024-11-08 17:45:47,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:45:47,447 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:45:47,451 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:45:47,452 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:45:47,458 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:45:47,459 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:45:47" (1/1) ... [2024-11-08 17:45:47,460 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@583b8c3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:45:47, skipping insertion in model container [2024-11-08 17:45:47,461 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:45:47" (1/1) ... [2024-11-08 17:45:47,503 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:45:47,789 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_2855ba6f-c605-4ab1-b207-825b9082c084/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c[4284,4297] [2024-11-08 17:45:47,799 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:45:47,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:45:47,828 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:45:47,883 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_2855ba6f-c605-4ab1-b207-825b9082c084/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c[4284,4297] [2024-11-08 17:45:47,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:45:47,936 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:45:47,937 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:45:47 WrapperNode [2024-11-08 17:45:47,937 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:45:47,938 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:45:47,938 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:45:47,939 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:45:47,948 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:45:47" (1/1) ... [2024-11-08 17:45:47,969 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:45:47" (1/1) ... [2024-11-08 17:45:48,031 INFO L138 Inliner]: procedures = 28, calls = 63, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 319 [2024-11-08 17:45:48,036 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:45:48,036 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:45:48,036 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:45:48,037 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:45:48,062 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:45:47" (1/1) ... [2024-11-08 17:45:48,062 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:45:47" (1/1) ... [2024-11-08 17:45:48,070 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:45:47" (1/1) ... [2024-11-08 17:45:48,113 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-08 17:45:48,117 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:45:47" (1/1) ... [2024-11-08 17:45:48,118 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:45:47" (1/1) ... [2024-11-08 17:45:48,141 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:45:47" (1/1) ... [2024-11-08 17:45:48,150 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:45:47" (1/1) ... [2024-11-08 17:45:48,157 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:45:47" (1/1) ... [2024-11-08 17:45:48,163 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:45:47" (1/1) ... [2024-11-08 17:45:48,171 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:45:48,173 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:45:48,173 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:45:48,173 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:45:48,174 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:45:47" (1/1) ... [2024-11-08 17:45:48,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:45:48,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:45:48,220 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:45:48,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:45:48,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:45:48,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-08 17:45:48,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-08 17:45:48,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-08 17:45:48,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-08 17:45:48,269 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 17:45:48,269 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 17:45:48,269 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 17:45:48,269 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 17:45:48,270 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 17:45:48,270 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 17:45:48,270 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-08 17:45:48,271 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-08 17:45:48,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 17:45:48,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 17:45:48,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 17:45:48,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:45:48,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:45:48,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-08 17:45:48,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-08 17:45:48,277 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 17:45:48,520 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:45:48,525 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:45:49,393 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 17:45:49,393 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:45:50,096 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:45:50,098 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 17:45:50,099 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:45:50 BoogieIcfgContainer [2024-11-08 17:45:50,099 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:45:50,102 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:45:50,102 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:45:50,106 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:45:50,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:45:47" (1/3) ... [2024-11-08 17:45:50,108 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@759e395b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:45:50, skipping insertion in model container [2024-11-08 17:45:50,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:45:47" (2/3) ... [2024-11-08 17:45:50,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@759e395b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:45:50, skipping insertion in model container [2024-11-08 17:45:50,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:45:50" (3/3) ... [2024-11-08 17:45:50,112 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series2.wvr.c [2024-11-08 17:45:50,135 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:45:50,135 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 17:45:50,135 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 17:45:50,246 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-08 17:45:50,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 71 transitions, 170 flow [2024-11-08 17:45:50,356 INFO L124 PetriNetUnfolderBase]: 14/67 cut-off events. [2024-11-08 17:45:50,358 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-08 17:45:50,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 67 events. 14/67 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 119 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2024-11-08 17:45:50,364 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 71 transitions, 170 flow [2024-11-08 17:45:50,369 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 66 transitions, 156 flow [2024-11-08 17:45:50,389 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:45:50,399 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;@541c805b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:45:50,400 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-08 17:45:50,442 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:45:50,443 INFO L124 PetriNetUnfolderBase]: 14/65 cut-off events. [2024-11-08 17:45:50,443 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-08 17:45:50,444 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:45:50,444 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] [2024-11-08 17:45:50,445 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 17:45:50,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:45:50,452 INFO L85 PathProgramCache]: Analyzing trace with hash -953224150, now seen corresponding path program 1 times [2024-11-08 17:45:50,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:45:50,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1261183026] [2024-11-08 17:45:50,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:45:50,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:45:50,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:45:50,475 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:45:50,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:45:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:50,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 17:45:50,731 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:45:50,891 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 17:45:50,893 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:45:50,895 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:45:50,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261183026] [2024-11-08 17:45:50,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261183026] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:45:50,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:45:50,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:45:50,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285475813] [2024-11-08 17:45:50,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:45:50,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:45:50,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:45:50,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:45:50,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:45:50,955 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 71 [2024-11-08 17:45:50,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 66 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 17:45:50,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:45:50,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 71 [2024-11-08 17:45:50,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:45:51,668 INFO L124 PetriNetUnfolderBase]: 1193/2243 cut-off events. [2024-11-08 17:45:51,669 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2024-11-08 17:45:51,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3800 conditions, 2243 events. 1193/2243 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 15016 event pairs, 252 based on Foata normal form. 1/1785 useless extension candidates. Maximal degree in co-relation 3210. Up to 989 conditions per place. [2024-11-08 17:45:51,704 INFO L140 encePairwiseOnDemand]: 67/71 looper letters, 39 selfloop transitions, 3 changer transitions 1/81 dead transitions. [2024-11-08 17:45:51,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 81 transitions, 287 flow [2024-11-08 17:45:51,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:45:51,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:45:51,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 170 transitions. [2024-11-08 17:45:51,719 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7981220657276995 [2024-11-08 17:45:51,721 INFO L175 Difference]: Start difference. First operand has 65 places, 66 transitions, 156 flow. Second operand 3 states and 170 transitions. [2024-11-08 17:45:51,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 81 transitions, 287 flow [2024-11-08 17:45:51,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 81 transitions, 261 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-08 17:45:51,734 INFO L231 Difference]: Finished difference. Result has 60 places, 68 transitions, 159 flow [2024-11-08 17:45:51,737 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=60, PETRI_TRANSITIONS=68} [2024-11-08 17:45:51,740 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, -5 predicate places. [2024-11-08 17:45:51,741 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 68 transitions, 159 flow [2024-11-08 17:45:51,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 17:45:51,741 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:45:51,742 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] [2024-11-08 17:45:51,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 17:45:51,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:45:51,943 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 17:45:51,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:45:51,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1277629522, now seen corresponding path program 1 times [2024-11-08 17:45:51,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:45:51,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [686813445] [2024-11-08 17:45:51,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:45:51,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:45:51,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:45:51,948 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:45:51,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:45:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:52,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 17:45:52,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:45:52,341 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 17:45:52,341 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:45:52,341 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:45:52,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686813445] [2024-11-08 17:45:52,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686813445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:45:52,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:45:52,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:45:52,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858158396] [2024-11-08 17:45:52,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:45:52,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:45:52,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:45:52,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:45:52,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:45:52,396 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 71 [2024-11-08 17:45:52,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 68 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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 17:45:52,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:45:52,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 71 [2024-11-08 17:45:52,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:45:53,199 INFO L124 PetriNetUnfolderBase]: 1401/2436 cut-off events. [2024-11-08 17:45:53,200 INFO L125 PetriNetUnfolderBase]: For 420/420 co-relation queries the response was YES. [2024-11-08 17:45:53,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4855 conditions, 2436 events. 1401/2436 cut-off events. For 420/420 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 17086 event pairs, 1016 based on Foata normal form. 120/2002 useless extension candidates. Maximal degree in co-relation 1768. Up to 1315 conditions per place. [2024-11-08 17:45:53,240 INFO L140 encePairwiseOnDemand]: 64/71 looper letters, 63 selfloop transitions, 5 changer transitions 0/100 dead transitions. [2024-11-08 17:45:53,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 100 transitions, 374 flow [2024-11-08 17:45:53,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:45:53,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:45:53,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 247 transitions. [2024-11-08 17:45:53,247 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6957746478873239 [2024-11-08 17:45:53,248 INFO L175 Difference]: Start difference. First operand has 60 places, 68 transitions, 159 flow. Second operand 5 states and 247 transitions. [2024-11-08 17:45:53,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 100 transitions, 374 flow [2024-11-08 17:45:53,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 100 transitions, 370 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:45:53,253 INFO L231 Difference]: Finished difference. Result has 66 places, 72 transitions, 196 flow [2024-11-08 17:45:53,254 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196, PETRI_PLACES=66, PETRI_TRANSITIONS=72} [2024-11-08 17:45:53,255 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 1 predicate places. [2024-11-08 17:45:53,255 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 72 transitions, 196 flow [2024-11-08 17:45:53,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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 17:45:53,256 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:45:53,256 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] [2024-11-08 17:45:53,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 17:45:53,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:45:53,458 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 17:45:53,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:45:53,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1194287936, now seen corresponding path program 1 times [2024-11-08 17:45:53,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:45:53,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [971784595] [2024-11-08 17:45:53,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:45:53,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:45:53,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:45:53,462 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:45:53,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:45:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:53,637 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 17:45:53,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:45:53,891 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 17:45:53,892 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:45:53,894 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:45:53,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971784595] [2024-11-08 17:45:53,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971784595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:45:53,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:45:53,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:45:53,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423693871] [2024-11-08 17:45:53,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:45:53,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:45:53,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:45:53,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:45:53,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:45:53,951 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 71 [2024-11-08 17:45:53,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 72 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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 17:45:53,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:45:53,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 71 [2024-11-08 17:45:53,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:45:54,874 INFO L124 PetriNetUnfolderBase]: 1940/3527 cut-off events. [2024-11-08 17:45:54,875 INFO L125 PetriNetUnfolderBase]: For 1207/1207 co-relation queries the response was YES. [2024-11-08 17:45:54,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7149 conditions, 3527 events. 1940/3527 cut-off events. For 1207/1207 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 26914 event pairs, 1451 based on Foata normal form. 130/2851 useless extension candidates. Maximal degree in co-relation 5337. Up to 1835 conditions per place. [2024-11-08 17:45:54,976 INFO L140 encePairwiseOnDemand]: 64/71 looper letters, 62 selfloop transitions, 6 changer transitions 0/100 dead transitions. [2024-11-08 17:45:54,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 100 transitions, 408 flow [2024-11-08 17:45:54,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:45:54,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:45:54,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 243 transitions. [2024-11-08 17:45:54,979 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6845070422535211 [2024-11-08 17:45:54,979 INFO L175 Difference]: Start difference. First operand has 66 places, 72 transitions, 196 flow. Second operand 5 states and 243 transitions. [2024-11-08 17:45:54,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 100 transitions, 408 flow [2024-11-08 17:45:54,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 100 transitions, 406 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:45:54,983 INFO L231 Difference]: Finished difference. Result has 72 places, 76 transitions, 237 flow [2024-11-08 17:45:54,984 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=237, PETRI_PLACES=72, PETRI_TRANSITIONS=76} [2024-11-08 17:45:54,985 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 7 predicate places. [2024-11-08 17:45:54,985 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 76 transitions, 237 flow [2024-11-08 17:45:54,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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 17:45:54,986 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:45:54,986 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] [2024-11-08 17:45:55,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 17:45:55,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:45:55,187 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 17:45:55,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:45:55,188 INFO L85 PathProgramCache]: Analyzing trace with hash -268833092, now seen corresponding path program 1 times [2024-11-08 17:45:55,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:45:55,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [242996534] [2024-11-08 17:45:55,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:45:55,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:45:55,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:45:55,192 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:45:55,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:45:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:55,350 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 17:45:55,353 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:45:55,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:45:55,739 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:45:56,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:45:56,210 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:45:56,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242996534] [2024-11-08 17:45:56,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242996534] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:45:56,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:45:56,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-11-08 17:45:56,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216794171] [2024-11-08 17:45:56,211 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:45:56,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 17:45:56,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:45:56,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 17:45:56,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:45:56,333 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 71 [2024-11-08 17:45:56,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 76 transitions, 237 flow. Second operand has 8 states, 8 states have (on average 38.5) internal successors, (308), 8 states have internal predecessors, (308), 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 17:45:56,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:45:56,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 71 [2024-11-08 17:45:56,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:45:58,038 INFO L124 PetriNetUnfolderBase]: 2932/5473 cut-off events. [2024-11-08 17:45:58,038 INFO L125 PetriNetUnfolderBase]: For 2581/2581 co-relation queries the response was YES. [2024-11-08 17:45:58,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11138 conditions, 5473 events. 2932/5473 cut-off events. For 2581/2581 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 42452 event pairs, 1298 based on Foata normal form. 147/4548 useless extension candidates. Maximal degree in co-relation 6950. Up to 1700 conditions per place. [2024-11-08 17:45:58,101 INFO L140 encePairwiseOnDemand]: 64/71 looper letters, 97 selfloop transitions, 11 changer transitions 0/137 dead transitions. [2024-11-08 17:45:58,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 137 transitions, 652 flow [2024-11-08 17:45:58,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:45:58,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-08 17:45:58,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 362 transitions. [2024-11-08 17:45:58,104 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6373239436619719 [2024-11-08 17:45:58,104 INFO L175 Difference]: Start difference. First operand has 72 places, 76 transitions, 237 flow. Second operand 8 states and 362 transitions. [2024-11-08 17:45:58,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 137 transitions, 652 flow [2024-11-08 17:45:58,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 137 transitions, 647 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:45:58,110 INFO L231 Difference]: Finished difference. Result has 82 places, 82 transitions, 312 flow [2024-11-08 17:45:58,111 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=312, PETRI_PLACES=82, PETRI_TRANSITIONS=82} [2024-11-08 17:45:58,112 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 17 predicate places. [2024-11-08 17:45:58,112 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 82 transitions, 312 flow [2024-11-08 17:45:58,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 38.5) internal successors, (308), 8 states have internal predecessors, (308), 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 17:45:58,113 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:45:58,113 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] [2024-11-08 17:45:58,134 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 17:45:58,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:45:58,318 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 17:45:58,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:45:58,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1780150000, now seen corresponding path program 1 times [2024-11-08 17:45:58,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:45:58,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1109788762] [2024-11-08 17:45:58,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:45:58,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:45:58,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:45:58,321 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:45:58,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 17:45:58,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:45:58,453 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 17:45:58,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:45:58,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:45:58,835 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:45:59,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:45:59,532 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:45:59,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109788762] [2024-11-08 17:45:59,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109788762] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:45:59,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:45:59,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2024-11-08 17:45:59,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524998340] [2024-11-08 17:45:59,533 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:45:59,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:45:59,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:45:59,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:45:59,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:45:59,773 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 71 [2024-11-08 17:45:59,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 82 transitions, 312 flow. Second operand has 11 states, 11 states have (on average 37.27272727272727) internal successors, (410), 11 states have internal predecessors, (410), 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 17:45:59,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:45:59,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 71 [2024-11-08 17:45:59,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:46:02,278 INFO L124 PetriNetUnfolderBase]: 4927/9202 cut-off events. [2024-11-08 17:46:02,278 INFO L125 PetriNetUnfolderBase]: For 6946/6946 co-relation queries the response was YES. [2024-11-08 17:46:02,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19827 conditions, 9202 events. 4927/9202 cut-off events. For 6946/6946 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 73839 event pairs, 1706 based on Foata normal form. 85/7623 useless extension candidates. Maximal degree in co-relation 12494. Up to 2184 conditions per place. [2024-11-08 17:46:02,414 INFO L140 encePairwiseOnDemand]: 63/71 looper letters, 106 selfloop transitions, 17 changer transitions 0/152 dead transitions. [2024-11-08 17:46:02,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 152 transitions, 822 flow [2024-11-08 17:46:02,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 17:46:02,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-08 17:46:02,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 402 transitions. [2024-11-08 17:46:02,418 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6291079812206573 [2024-11-08 17:46:02,418 INFO L175 Difference]: Start difference. First operand has 82 places, 82 transitions, 312 flow. Second operand 9 states and 402 transitions. [2024-11-08 17:46:02,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 152 transitions, 822 flow [2024-11-08 17:46:02,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 152 transitions, 799 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-08 17:46:02,428 INFO L231 Difference]: Finished difference. Result has 93 places, 90 transitions, 401 flow [2024-11-08 17:46:02,429 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=401, PETRI_PLACES=93, PETRI_TRANSITIONS=90} [2024-11-08 17:46:02,432 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 28 predicate places. [2024-11-08 17:46:02,432 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 90 transitions, 401 flow [2024-11-08 17:46:02,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 37.27272727272727) internal successors, (410), 11 states have internal predecessors, (410), 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 17:46:02,433 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:46:02,433 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, 1] [2024-11-08 17:46:02,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 17:46:02,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:46:02,634 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 17:46:02,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:46:02,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1411767304, now seen corresponding path program 1 times [2024-11-08 17:46:02,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:46:02,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1534250213] [2024-11-08 17:46:02,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:46:02,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:46:02,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:46:02,639 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:46:02,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 17:46:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:46:02,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 17:46:02,803 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:46:03,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:46:03,286 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:46:03,796 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 17:46:03,796 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:46:03,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534250213] [2024-11-08 17:46:03,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534250213] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:46:03,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:46:03,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 17 [2024-11-08 17:46:03,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407310878] [2024-11-08 17:46:03,798 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:46:03,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 17:46:03,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:46:03,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 17:46:03,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-11-08 17:46:04,165 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 71 [2024-11-08 17:46:04,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 90 transitions, 401 flow. Second operand has 18 states, 18 states have (on average 27.166666666666668) internal successors, (489), 18 states have internal predecessors, (489), 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 17:46:04,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:46:04,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 71 [2024-11-08 17:46:04,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:46:40,904 INFO L124 PetriNetUnfolderBase]: 207123/281433 cut-off events. [2024-11-08 17:46:40,904 INFO L125 PetriNetUnfolderBase]: For 218716/221652 co-relation queries the response was YES. [2024-11-08 17:46:42,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685190 conditions, 281433 events. 207123/281433 cut-off events. For 218716/221652 co-relation queries the response was YES. Maximal size of possible extension queue 9351. Compared 2115534 event pairs, 6367 based on Foata normal form. 553/236191 useless extension candidates. Maximal degree in co-relation 448956. Up to 25964 conditions per place. [2024-11-08 17:46:43,395 INFO L140 encePairwiseOnDemand]: 54/71 looper letters, 888 selfloop transitions, 209 changer transitions 1/1126 dead transitions. [2024-11-08 17:46:43,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 1126 transitions, 6200 flow [2024-11-08 17:46:43,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-08 17:46:43,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2024-11-08 17:46:43,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 2368 transitions. [2024-11-08 17:46:43,405 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5955734406438632 [2024-11-08 17:46:43,405 INFO L175 Difference]: Start difference. First operand has 93 places, 90 transitions, 401 flow. Second operand 56 states and 2368 transitions. [2024-11-08 17:46:43,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 1126 transitions, 6200 flow [2024-11-08 17:46:43,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 1126 transitions, 6009 flow, removed 91 selfloop flow, removed 2 redundant places. [2024-11-08 17:46:43,627 INFO L231 Difference]: Finished difference. Result has 168 places, 341 transitions, 1958 flow [2024-11-08 17:46:43,627 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=1958, PETRI_PLACES=168, PETRI_TRANSITIONS=341} [2024-11-08 17:46:43,628 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 103 predicate places. [2024-11-08 17:46:43,628 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 341 transitions, 1958 flow [2024-11-08 17:46:43,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 27.166666666666668) internal successors, (489), 18 states have internal predecessors, (489), 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 17:46:43,629 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:46:43,630 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, 1] [2024-11-08 17:46:43,651 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 17:46:43,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:46:43,831 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 17:46:43,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:46:43,832 INFO L85 PathProgramCache]: Analyzing trace with hash 596385722, now seen corresponding path program 2 times [2024-11-08 17:46:43,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:46:43,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2132117922] [2024-11-08 17:46:43,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:46:43,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:46:43,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:46:43,836 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:46:43,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2855ba6f-c605-4ab1-b207-825b9082c084/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 17:46:44,024 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:46:44,024 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:46:44,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 17:46:44,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:46:44,257 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 17:46:44,257 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:46:44,257 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:46:44,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132117922] [2024-11-08 17:46:44,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132117922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:46:44,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:46:44,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:46:44,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104713267] [2024-11-08 17:46:44,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:46:44,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:46:44,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:46:44,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:46:44,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:46:44,346 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 71 [2024-11-08 17:46:44,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 341 transitions, 1958 flow. Second operand has 6 states, 6 states have (on average 35.333333333333336) internal successors, (212), 6 states have internal predecessors, (212), 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 17:46:44,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:46:44,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 71 [2024-11-08 17:46:44,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand