./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5fbd83-411e-4990-af38-bb8480923698/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5fbd83-411e-4990-af38-bb8480923698/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_3d5fbd83-411e-4990-af38-bb8480923698/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5fbd83-411e-4990-af38-bb8480923698/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5fbd83-411e-4990-af38-bb8480923698/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_3d5fbd83-411e-4990-af38-bb8480923698/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 dbff9cba9b3794b18d55ca52c1abf6279404a7b220f91d79730a04b586f9ee44 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:31:09,528 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:31:09,668 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5fbd83-411e-4990-af38-bb8480923698/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 16:31:09,676 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:31:09,677 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:31:09,707 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:31:09,708 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:31:09,709 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:31:09,710 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:31:09,710 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:31:09,711 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:31:09,712 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:31:09,713 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:31:09,713 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:31:09,714 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:31:09,715 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:31:09,715 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:31:09,716 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:31:09,716 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:31:09,717 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:31:09,717 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:31:09,718 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:31:09,719 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:31:09,719 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:31:09,720 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:31:09,720 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:31:09,721 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:31:09,721 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:31:09,722 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:31:09,722 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:31:09,723 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:31:09,723 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:31:09,724 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:31:09,725 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:31:09,725 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:31:09,725 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:31:09,726 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:31:09,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:31:09,727 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:31:09,727 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:31:09,728 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:31:09,731 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:31:09,732 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_3d5fbd83-411e-4990-af38-bb8480923698/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5fbd83-411e-4990-af38-bb8480923698/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbff9cba9b3794b18d55ca52c1abf6279404a7b220f91d79730a04b586f9ee44 [2024-11-08 16:31:10,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:31:10,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:31:10,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:31:10,150 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:31:10,150 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:31:10,152 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5fbd83-411e-4990-af38-bb8480923698/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c Unable to find full path for "g++" [2024-11-08 16:31:12,721 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:31:13,055 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:31:13,056 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5fbd83-411e-4990-af38-bb8480923698/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2024-11-08 16:31:13,068 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5fbd83-411e-4990-af38-bb8480923698/bin/uautomizer-verify-jihMAELWvX/data/0a0a20e15/e2a6a9f14ba5439f98849f64976cdd02/FLAGc1824867a [2024-11-08 16:31:13,094 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5fbd83-411e-4990-af38-bb8480923698/bin/uautomizer-verify-jihMAELWvX/data/0a0a20e15/e2a6a9f14ba5439f98849f64976cdd02 [2024-11-08 16:31:13,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:31:13,100 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:31:13,102 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:31:13,102 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:31:13,110 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:31:13,111 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:31:13" (1/1) ... [2024-11-08 16:31:13,113 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b71e79c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:13, skipping insertion in model container [2024-11-08 16:31:13,113 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:31:13" (1/1) ... [2024-11-08 16:31:13,151 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:31:13,492 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_3d5fbd83-411e-4990-af38-bb8480923698/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c[4151,4164] [2024-11-08 16:31:13,508 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:31:13,521 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:31:13,559 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_3d5fbd83-411e-4990-af38-bb8480923698/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c[4151,4164] [2024-11-08 16:31:13,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:31:13,594 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:31:13,595 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:13 WrapperNode [2024-11-08 16:31:13,595 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:31:13,597 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:31:13,597 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:31:13,597 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:31:13,608 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:13" (1/1) ... [2024-11-08 16:31:13,622 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:13" (1/1) ... [2024-11-08 16:31:13,675 INFO L138 Inliner]: procedures = 26, calls = 56, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 286 [2024-11-08 16:31:13,676 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:31:13,677 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:31:13,677 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:31:13,677 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:31:13,692 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:13" (1/1) ... [2024-11-08 16:31:13,692 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:13" (1/1) ... [2024-11-08 16:31:13,698 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:13" (1/1) ... [2024-11-08 16:31:13,723 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-08 16:31:13,724 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:13" (1/1) ... [2024-11-08 16:31:13,724 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:13" (1/1) ... [2024-11-08 16:31:13,737 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:13" (1/1) ... [2024-11-08 16:31:13,744 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:13" (1/1) ... [2024-11-08 16:31:13,746 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:13" (1/1) ... [2024-11-08 16:31:13,749 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:13" (1/1) ... [2024-11-08 16:31:13,754 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:31:13,755 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:31:13,755 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:31:13,755 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:31:13,757 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:13" (1/1) ... [2024-11-08 16:31:13,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:31:13,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5fbd83-411e-4990-af38-bb8480923698/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:31:13,810 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5fbd83-411e-4990-af38-bb8480923698/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:31:13,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5fbd83-411e-4990-af38-bb8480923698/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:31:13,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:31:13,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 16:31:13,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 16:31:13,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 16:31:13,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 16:31:13,867 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 16:31:13,868 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 16:31:13,868 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 16:31:13,868 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 16:31:13,869 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 16:31:13,869 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 16:31:13,869 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-08 16:31:13,870 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-08 16:31:13,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:31:13,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 16:31:13,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 16:31:13,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 16:31:13,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 16:31:13,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:31:13,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:31:13,878 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 16:31:14,061 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:31:14,064 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:31:14,742 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 16:31:14,743 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:31:15,314 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:31:15,314 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 16:31:15,315 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:31:15 BoogieIcfgContainer [2024-11-08 16:31:15,315 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:31:15,320 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:31:15,322 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:31:15,327 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:31:15,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:31:13" (1/3) ... [2024-11-08 16:31:15,329 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b1c618f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:31:15, skipping insertion in model container [2024-11-08 16:31:15,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:13" (2/3) ... [2024-11-08 16:31:15,329 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b1c618f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:31:15, skipping insertion in model container [2024-11-08 16:31:15,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:31:15" (3/3) ... [2024-11-08 16:31:15,332 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult2.wvr.c [2024-11-08 16:31:15,358 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:31:15,358 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 16:31:15,358 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 16:31:15,462 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-08 16:31:15,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 66 transitions, 160 flow [2024-11-08 16:31:15,602 INFO L124 PetriNetUnfolderBase]: 12/62 cut-off events. [2024-11-08 16:31:15,602 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-08 16:31:15,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 62 events. 12/62 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 116 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2024-11-08 16:31:15,608 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 66 transitions, 160 flow [2024-11-08 16:31:15,617 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 61 transitions, 146 flow [2024-11-08 16:31:15,639 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:31:15,647 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;@20e6e28b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:31:15,648 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-08 16:31:15,728 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 16:31:15,729 INFO L124 PetriNetUnfolderBase]: 12/60 cut-off events. [2024-11-08 16:31:15,729 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-08 16:31:15,747 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:31:15,748 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:31:15,748 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 16:31:15,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:31:15,758 INFO L85 PathProgramCache]: Analyzing trace with hash 2115957037, now seen corresponding path program 1 times [2024-11-08 16:31:15,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:31:15,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63680244] [2024-11-08 16:31:15,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:31:15,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:31:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:31:16,398 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 16:31:16,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:31:16,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63680244] [2024-11-08 16:31:16,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63680244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:31:16,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:31:16,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:31:16,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549261521] [2024-11-08 16:31:16,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:31:16,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:31:16,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:31:16,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:31:16,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:31:16,473 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 66 [2024-11-08 16:31:16,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 61 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:31:16,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:31:16,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 66 [2024-11-08 16:31:16,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:31:17,230 INFO L124 PetriNetUnfolderBase]: 1191/2238 cut-off events. [2024-11-08 16:31:17,231 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2024-11-08 16:31:17,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3793 conditions, 2238 events. 1191/2238 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 14977 event pairs, 252 based on Foata normal form. 1/1796 useless extension candidates. Maximal degree in co-relation 3210. Up to 989 conditions per place. [2024-11-08 16:31:17,278 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 37 selfloop transitions, 3 changer transitions 1/76 dead transitions. [2024-11-08 16:31:17,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 76 transitions, 273 flow [2024-11-08 16:31:17,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:31:17,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:31:17,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 159 transitions. [2024-11-08 16:31:17,299 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.803030303030303 [2024-11-08 16:31:17,302 INFO L175 Difference]: Start difference. First operand has 62 places, 61 transitions, 146 flow. Second operand 3 states and 159 transitions. [2024-11-08 16:31:17,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 76 transitions, 273 flow [2024-11-08 16:31:17,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 76 transitions, 247 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-08 16:31:17,325 INFO L231 Difference]: Finished difference. Result has 57 places, 63 transitions, 149 flow [2024-11-08 16:31:17,328 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=57, PETRI_TRANSITIONS=63} [2024-11-08 16:31:17,335 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, -5 predicate places. [2024-11-08 16:31:17,336 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 63 transitions, 149 flow [2024-11-08 16:31:17,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:31:17,337 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:31:17,338 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:31:17,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:31:17,339 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 16:31:17,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:31:17,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1502027057, now seen corresponding path program 1 times [2024-11-08 16:31:17,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:31:17,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656981990] [2024-11-08 16:31:17,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:31:17,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:31:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:31:17,675 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 16:31:17,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:31:17,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656981990] [2024-11-08 16:31:17,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656981990] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:31:17,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:31:17,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:31:17,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553917352] [2024-11-08 16:31:17,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:31:17,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:31:17,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:31:17,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:31:17,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:31:17,690 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 66 [2024-11-08 16:31:17,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 63 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:31:17,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:31:17,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 66 [2024-11-08 16:31:17,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:31:18,247 INFO L124 PetriNetUnfolderBase]: 1348/2389 cut-off events. [2024-11-08 16:31:18,247 INFO L125 PetriNetUnfolderBase]: For 376/376 co-relation queries the response was YES. [2024-11-08 16:31:18,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4519 conditions, 2389 events. 1348/2389 cut-off events. For 376/376 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 15337 event pairs, 362 based on Foata normal form. 58/2033 useless extension candidates. Maximal degree in co-relation 1653. Up to 1131 conditions per place. [2024-11-08 16:31:18,281 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 46 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2024-11-08 16:31:18,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 83 transitions, 299 flow [2024-11-08 16:31:18,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:31:18,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:31:18,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2024-11-08 16:31:18,284 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8232323232323232 [2024-11-08 16:31:18,284 INFO L175 Difference]: Start difference. First operand has 57 places, 63 transitions, 149 flow. Second operand 3 states and 163 transitions. [2024-11-08 16:31:18,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 83 transitions, 299 flow [2024-11-08 16:31:18,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 83 transitions, 295 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:31:18,290 INFO L231 Difference]: Finished difference. Result has 59 places, 64 transitions, 160 flow [2024-11-08 16:31:18,292 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=59, PETRI_TRANSITIONS=64} [2024-11-08 16:31:18,293 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, -3 predicate places. [2024-11-08 16:31:18,295 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 64 transitions, 160 flow [2024-11-08 16:31:18,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:31:18,296 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:31:18,296 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:31:18,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:31:18,298 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 16:31:18,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:31:18,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1511358377, now seen corresponding path program 1 times [2024-11-08 16:31:18,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:31:18,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951861068] [2024-11-08 16:31:18,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:31:18,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:31:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:31:18,501 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 16:31:18,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:31:18,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951861068] [2024-11-08 16:31:18,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951861068] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:31:18,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:31:18,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:31:18,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806406971] [2024-11-08 16:31:18,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:31:18,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:31:18,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:31:18,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:31:18,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:31:18,512 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 66 [2024-11-08 16:31:18,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 64 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:31:18,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:31:18,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 66 [2024-11-08 16:31:18,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:31:19,076 INFO L124 PetriNetUnfolderBase]: 1602/2866 cut-off events. [2024-11-08 16:31:19,077 INFO L125 PetriNetUnfolderBase]: For 866/866 co-relation queries the response was YES. [2024-11-08 16:31:19,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5587 conditions, 2866 events. 1602/2866 cut-off events. For 866/866 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 18325 event pairs, 399 based on Foata normal form. 27/2397 useless extension candidates. Maximal degree in co-relation 3691. Up to 1290 conditions per place. [2024-11-08 16:31:19,125 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 46 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2024-11-08 16:31:19,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 83 transitions, 315 flow [2024-11-08 16:31:19,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:31:19,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:31:19,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 161 transitions. [2024-11-08 16:31:19,127 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8131313131313131 [2024-11-08 16:31:19,128 INFO L175 Difference]: Start difference. First operand has 59 places, 64 transitions, 160 flow. Second operand 3 states and 161 transitions. [2024-11-08 16:31:19,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 83 transitions, 315 flow [2024-11-08 16:31:19,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 83 transitions, 312 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:31:19,134 INFO L231 Difference]: Finished difference. Result has 61 places, 65 transitions, 172 flow [2024-11-08 16:31:19,136 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=61, PETRI_TRANSITIONS=65} [2024-11-08 16:31:19,137 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, -1 predicate places. [2024-11-08 16:31:19,138 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 65 transitions, 172 flow [2024-11-08 16:31:19,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:31:19,139 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:31:19,139 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 16:31:19,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 16:31:19,140 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 16:31:19,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:31:19,141 INFO L85 PathProgramCache]: Analyzing trace with hash -2036230043, now seen corresponding path program 1 times [2024-11-08 16:31:19,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:31:19,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801880007] [2024-11-08 16:31:19,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:31:19,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:31:19,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:31:19,597 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 16:31:19,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:31:19,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801880007] [2024-11-08 16:31:19,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801880007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:31:19,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:31:19,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:31:19,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401509671] [2024-11-08 16:31:19,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:31:19,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:31:19,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:31:19,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:31:19,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:31:19,646 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 66 [2024-11-08 16:31:19,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 65 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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 16:31:19,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:31:19,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 66 [2024-11-08 16:31:19,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:31:20,377 INFO L124 PetriNetUnfolderBase]: 1914/3259 cut-off events. [2024-11-08 16:31:20,377 INFO L125 PetriNetUnfolderBase]: For 1450/1450 co-relation queries the response was YES. [2024-11-08 16:31:20,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7092 conditions, 3259 events. 1914/3259 cut-off events. For 1450/1450 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 21843 event pairs, 1276 based on Foata normal form. 71/2659 useless extension candidates. Maximal degree in co-relation 3707. Up to 1899 conditions per place. [2024-11-08 16:31:20,421 INFO L140 encePairwiseOnDemand]: 60/66 looper letters, 58 selfloop transitions, 5 changer transitions 0/94 dead transitions. [2024-11-08 16:31:20,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 94 transitions, 379 flow [2024-11-08 16:31:20,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:31:20,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 16:31:20,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 233 transitions. [2024-11-08 16:31:20,424 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.706060606060606 [2024-11-08 16:31:20,424 INFO L175 Difference]: Start difference. First operand has 61 places, 65 transitions, 172 flow. Second operand 5 states and 233 transitions. [2024-11-08 16:31:20,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 94 transitions, 379 flow [2024-11-08 16:31:20,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 94 transitions, 376 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:31:20,429 INFO L231 Difference]: Finished difference. Result has 67 places, 69 transitions, 206 flow [2024-11-08 16:31:20,430 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=206, PETRI_PLACES=67, PETRI_TRANSITIONS=69} [2024-11-08 16:31:20,430 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 5 predicate places. [2024-11-08 16:31:20,431 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 69 transitions, 206 flow [2024-11-08 16:31:20,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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 16:31:20,432 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:31:20,432 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 16:31:20,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 16:31:20,433 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 16:31:20,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:31:20,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1478554341, now seen corresponding path program 1 times [2024-11-08 16:31:20,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:31:20,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160545577] [2024-11-08 16:31:20,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:31:20,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:31:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:31:20,648 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 16:31:20,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:31:20,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160545577] [2024-11-08 16:31:20,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160545577] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:31:20,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:31:20,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:31:20,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957952868] [2024-11-08 16:31:20,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:31:20,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:31:20,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:31:20,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:31:20,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:31:20,689 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 66 [2024-11-08 16:31:20,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 69 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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 16:31:20,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:31:20,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 66 [2024-11-08 16:31:20,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:31:21,527 INFO L124 PetriNetUnfolderBase]: 2505/4428 cut-off events. [2024-11-08 16:31:21,528 INFO L125 PetriNetUnfolderBase]: For 1975/1975 co-relation queries the response was YES. [2024-11-08 16:31:21,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9343 conditions, 4428 events. 2505/4428 cut-off events. For 1975/1975 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 32110 event pairs, 1724 based on Foata normal form. 100/3612 useless extension candidates. Maximal degree in co-relation 7249. Up to 2493 conditions per place. [2024-11-08 16:31:21,588 INFO L140 encePairwiseOnDemand]: 60/66 looper letters, 57 selfloop transitions, 6 changer transitions 0/94 dead transitions. [2024-11-08 16:31:21,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 94 transitions, 406 flow [2024-11-08 16:31:21,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:31:21,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 16:31:21,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 229 transitions. [2024-11-08 16:31:21,591 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.693939393939394 [2024-11-08 16:31:21,591 INFO L175 Difference]: Start difference. First operand has 67 places, 69 transitions, 206 flow. Second operand 5 states and 229 transitions. [2024-11-08 16:31:21,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 94 transitions, 406 flow [2024-11-08 16:31:21,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 94 transitions, 404 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:31:21,596 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 243 flow [2024-11-08 16:31:21,596 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=243, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2024-11-08 16:31:21,597 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 11 predicate places. [2024-11-08 16:31:21,598 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 243 flow [2024-11-08 16:31:21,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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 16:31:21,598 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:31:21,599 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 16:31:21,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 16:31:21,599 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 16:31:21,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:31:21,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1008406649, now seen corresponding path program 1 times [2024-11-08 16:31:21,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:31:21,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115005227] [2024-11-08 16:31:21,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:31:21,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:31:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:31:22,696 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 16:31:22,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:31:22,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115005227] [2024-11-08 16:31:22,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115005227] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:31:22,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549688496] [2024-11-08 16:31:22,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:31:22,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:31:22,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5fbd83-411e-4990-af38-bb8480923698/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:31:22,703 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5fbd83-411e-4990-af38-bb8480923698/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:31:22,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5fbd83-411e-4990-af38-bb8480923698/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:31:22,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:31:22,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 16:31:22,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:31:23,285 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 16:31:23,285 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:31:23,627 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 16:31:23,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549688496] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 16:31:23,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 16:31:23,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 5] total 17 [2024-11-08 16:31:23,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025292714] [2024-11-08 16:31:23,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:31:23,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 16:31:23,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:31:23,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 16:31:23,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2024-11-08 16:31:23,790 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 66 [2024-11-08 16:31:23,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 73 transitions, 243 flow. Second operand has 8 states, 8 states have (on average 25.375) internal successors, (203), 8 states have internal predecessors, (203), 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 16:31:23,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:31:23,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 66 [2024-11-08 16:31:23,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:31:41,055 INFO L124 PetriNetUnfolderBase]: 94262/128016 cut-off events. [2024-11-08 16:31:41,055 INFO L125 PetriNetUnfolderBase]: For 27297/27845 co-relation queries the response was YES. [2024-11-08 16:31:41,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279418 conditions, 128016 events. 94262/128016 cut-off events. For 27297/27845 co-relation queries the response was YES. Maximal size of possible extension queue 4611. Compared 892081 event pairs, 4030 based on Foata normal form. 24/104835 useless extension candidates. Maximal degree in co-relation 213315. Up to 13578 conditions per place. [2024-11-08 16:31:42,104 INFO L140 encePairwiseOnDemand]: 52/66 looper letters, 434 selfloop transitions, 65 changer transitions 2/522 dead transitions. [2024-11-08 16:31:42,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 522 transitions, 2422 flow [2024-11-08 16:31:42,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 16:31:42,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-08 16:31:42,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 976 transitions. [2024-11-08 16:31:42,110 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6429512516469038 [2024-11-08 16:31:42,110 INFO L175 Difference]: Start difference. First operand has 73 places, 73 transitions, 243 flow. Second operand 23 states and 976 transitions. [2024-11-08 16:31:42,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 522 transitions, 2422 flow [2024-11-08 16:31:42,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 522 transitions, 2419 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:31:42,151 INFO L231 Difference]: Finished difference. Result has 113 places, 136 transitions, 740 flow [2024-11-08 16:31:42,152 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=740, PETRI_PLACES=113, PETRI_TRANSITIONS=136} [2024-11-08 16:31:42,154 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 51 predicate places. [2024-11-08 16:31:42,155 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 136 transitions, 740 flow [2024-11-08 16:31:42,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.375) internal successors, (203), 8 states have internal predecessors, (203), 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 16:31:42,156 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:31:42,157 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 16:31:42,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5fbd83-411e-4990-af38-bb8480923698/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 16:31:42,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d5fbd83-411e-4990-af38-bb8480923698/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:31:42,358 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 16:31:42,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:31:42,363 INFO L85 PathProgramCache]: Analyzing trace with hash -547972881, now seen corresponding path program 2 times [2024-11-08 16:31:42,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:31:42,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235878430] [2024-11-08 16:31:42,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:31:42,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:31:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:31:43,367 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 16:31:43,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:31:43,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235878430] [2024-11-08 16:31:43,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235878430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:31:43,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:31:43,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:31:43,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712921669] [2024-11-08 16:31:43,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:31:43,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:31:43,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:31:43,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:31:43,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:31:43,577 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 66 [2024-11-08 16:31:43,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 136 transitions, 740 flow. Second operand has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 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 16:31:43,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:31:43,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 66 [2024-11-08 16:31:43,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:31:56,879 INFO L124 PetriNetUnfolderBase]: 50355/78631 cut-off events. [2024-11-08 16:31:56,879 INFO L125 PetriNetUnfolderBase]: For 211435/215459 co-relation queries the response was YES. [2024-11-08 16:31:57,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244679 conditions, 78631 events. 50355/78631 cut-off events. For 211435/215459 co-relation queries the response was YES. Maximal size of possible extension queue 3463. Compared 689414 event pairs, 7588 based on Foata normal form. 568/73702 useless extension candidates. Maximal degree in co-relation 233845. Up to 38454 conditions per place. [2024-11-08 16:31:58,221 INFO L140 encePairwiseOnDemand]: 55/66 looper letters, 151 selfloop transitions, 31 changer transitions 2/242 dead transitions. [2024-11-08 16:31:58,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 242 transitions, 1620 flow [2024-11-08 16:31:58,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 16:31:58,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-08 16:31:58,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 366 transitions. [2024-11-08 16:31:58,224 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6931818181818182 [2024-11-08 16:31:58,224 INFO L175 Difference]: Start difference. First operand has 113 places, 136 transitions, 740 flow. Second operand 8 states and 366 transitions. [2024-11-08 16:31:58,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 242 transitions, 1620 flow [2024-11-08 16:32:05,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 242 transitions, 1587 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-08 16:32:05,637 INFO L231 Difference]: Finished difference. Result has 123 places, 158 transitions, 1037 flow [2024-11-08 16:32:05,638 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1037, PETRI_PLACES=123, PETRI_TRANSITIONS=158} [2024-11-08 16:32:05,639 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 61 predicate places. [2024-11-08 16:32:05,639 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 158 transitions, 1037 flow [2024-11-08 16:32:05,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.0) internal successors, (204), 6 states have internal predecessors, (204), 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 16:32:05,640 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:32:05,640 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 16:32:05,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 16:32:05,641 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 16:32:05,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:32:05,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1895865895, now seen corresponding path program 3 times [2024-11-08 16:32:05,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:32:05,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54610698] [2024-11-08 16:32:05,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:32:05,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:32:05,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:32:06,533 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 16:32:06,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:32:06,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54610698] [2024-11-08 16:32:06,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54610698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:32:06,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:32:06,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 16:32:06,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126671073] [2024-11-08 16:32:06,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:32:06,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:32:06,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:32:06,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:32:06,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:32:06,677 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 66 [2024-11-08 16:32:06,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 158 transitions, 1037 flow. Second operand has 7 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:32:06,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:32:06,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 66 [2024-11-08 16:32:06,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:32:21,090 INFO L124 PetriNetUnfolderBase]: 54880/85468 cut-off events. [2024-11-08 16:32:21,090 INFO L125 PetriNetUnfolderBase]: For 317152/323398 co-relation queries the response was YES. [2024-11-08 16:32:21,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287608 conditions, 85468 events. 54880/85468 cut-off events. For 317152/323398 co-relation queries the response was YES. Maximal size of possible extension queue 4046. Compared 756224 event pairs, 11505 based on Foata normal form. 2402/82193 useless extension candidates. Maximal degree in co-relation 273678. Up to 45025 conditions per place. [2024-11-08 16:32:22,157 INFO L140 encePairwiseOnDemand]: 57/66 looper letters, 156 selfloop transitions, 52 changer transitions 2/268 dead transitions. [2024-11-08 16:32:22,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 268 transitions, 2124 flow [2024-11-08 16:32:22,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 16:32:22,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 16:32:22,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 315 transitions. [2024-11-08 16:32:22,160 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6818181818181818 [2024-11-08 16:32:22,160 INFO L175 Difference]: Start difference. First operand has 123 places, 158 transitions, 1037 flow. Second operand 7 states and 315 transitions. [2024-11-08 16:32:22,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 268 transitions, 2124 flow [2024-11-08 16:32:31,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 268 transitions, 2104 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-11-08 16:32:31,702 INFO L231 Difference]: Finished difference. Result has 134 places, 191 transitions, 1535 flow [2024-11-08 16:32:31,703 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1535, PETRI_PLACES=134, PETRI_TRANSITIONS=191} [2024-11-08 16:32:31,704 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 72 predicate places. [2024-11-08 16:32:31,704 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 191 transitions, 1535 flow [2024-11-08 16:32:31,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:32:31,705 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:32:31,705 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 16:32:31,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 16:32:31,706 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 16:32:31,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:32:31,706 INFO L85 PathProgramCache]: Analyzing trace with hash 806066245, now seen corresponding path program 4 times [2024-11-08 16:32:31,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:32:31,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271163220] [2024-11-08 16:32:31,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:32:31,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:32:31,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:32:32,293 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 16:32:32,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:32:32,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271163220] [2024-11-08 16:32:32,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271163220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:32:32,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:32:32,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:32:32,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419677545] [2024-11-08 16:32:32,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:32:32,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:32:32,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:32:32,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:32:32,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:32:32,418 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 66 [2024-11-08 16:32:32,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 191 transitions, 1535 flow. Second operand has 6 states, 6 states have (on average 35.833333333333336) internal successors, (215), 6 states have internal predecessors, (215), 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 16:32:32,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:32:32,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 66 [2024-11-08 16:32:32,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand