./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-array-sum.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_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/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_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/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_1c6f8daa-aad2-42fb-9e71-36971a5b7770/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 e4a4a131c0d4df2db1bf018027395318bc112945cbb20d5c862562c48934e5a1 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:28:28,847 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:28:28,966 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 18:28:28,972 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:28:28,972 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:28:29,017 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:28:29,018 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:28:29,018 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:28:29,020 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:28:29,021 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:28:29,023 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:28:29,024 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:28:29,025 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:28:29,025 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:28:29,029 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:28:29,030 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:28:29,030 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:28:29,031 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:28:29,031 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:28:29,031 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:28:29,032 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:28:29,034 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:28:29,034 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:28:29,034 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:28:29,035 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:28:29,035 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:28:29,035 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:28:29,036 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:28:29,036 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:28:29,037 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:28:29,037 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:28:29,038 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:28:29,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:28:29,039 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:28:29,039 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:28:29,039 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:28:29,040 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:28:29,040 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:28:29,040 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:28:29,041 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:28:29,041 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:28:29,043 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:28:29,043 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_1c6f8daa-aad2-42fb-9e71-36971a5b7770/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4a4a131c0d4df2db1bf018027395318bc112945cbb20d5c862562c48934e5a1 [2024-11-08 18:28:29,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:28:29,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:28:29,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:28:29,432 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:28:29,433 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:28:29,435 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c Unable to find full path for "g++" [2024-11-08 18:28:31,911 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:28:32,216 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:28:32,217 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c [2024-11-08 18:28:32,227 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/data/19af22c4f/05de30742aa447378c22a5d37e257e7d/FLAGd796044a8 [2024-11-08 18:28:32,243 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/data/19af22c4f/05de30742aa447378c22a5d37e257e7d [2024-11-08 18:28:32,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:28:32,247 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:28:32,249 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:28:32,249 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:28:32,256 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:28:32,257 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:28:32" (1/1) ... [2024-11-08 18:28:32,259 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bdb0a04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:28:32, skipping insertion in model container [2024-11-08 18:28:32,259 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:28:32" (1/1) ... [2024-11-08 18:28:32,285 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:28:32,620 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_1c6f8daa-aad2-42fb-9e71-36971a5b7770/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c[2423,2436] [2024-11-08 18:28:32,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:28:32,691 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:28:32,738 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_1c6f8daa-aad2-42fb-9e71-36971a5b7770/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c[2423,2436] [2024-11-08 18:28:32,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:28:32,773 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:28:32,773 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:28:32 WrapperNode [2024-11-08 18:28:32,774 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:28:32,775 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:28:32,776 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:28:32,776 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:28:32,786 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:28:32" (1/1) ... [2024-11-08 18:28:32,798 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:28:32" (1/1) ... [2024-11-08 18:28:32,842 INFO L138 Inliner]: procedures = 22, calls = 31, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 259 [2024-11-08 18:28:32,843 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:28:32,844 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:28:32,844 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:28:32,844 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:28:32,858 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:28:32" (1/1) ... [2024-11-08 18:28:32,859 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:28:32" (1/1) ... [2024-11-08 18:28:32,864 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:28:32" (1/1) ... [2024-11-08 18:28:32,887 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 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 18:28:32,887 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:28:32" (1/1) ... [2024-11-08 18:28:32,888 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:28:32" (1/1) ... [2024-11-08 18:28:32,900 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:28:32" (1/1) ... [2024-11-08 18:28:32,907 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:28:32" (1/1) ... [2024-11-08 18:28:32,909 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:28:32" (1/1) ... [2024-11-08 18:28:32,912 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:28:32" (1/1) ... [2024-11-08 18:28:32,917 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:28:32,918 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:28:32,918 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:28:32,919 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:28:32,920 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:28:32" (1/1) ... [2024-11-08 18:28:32,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:28:32,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:28:32,962 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:28:32,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:28:33,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:28:33,002 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 18:28:33,002 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 18:28:33,003 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 18:28:33,003 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 18:28:33,003 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 18:28:33,003 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 18:28:33,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:28:33,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 18:28:33,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 18:28:33,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 18:28:33,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 18:28:33,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:28:33,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:28:33,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 18:28:33,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 18:28:33,008 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 18:28:33,169 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:28:33,171 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:28:33,901 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 18:28:33,901 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:28:34,584 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:28:34,585 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 18:28:34,586 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:28:34 BoogieIcfgContainer [2024-11-08 18:28:34,586 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:28:34,590 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:28:34,590 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:28:34,597 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:28:34,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:28:32" (1/3) ... [2024-11-08 18:28:34,600 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aeadafe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:28:34, skipping insertion in model container [2024-11-08 18:28:34,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:28:32" (2/3) ... [2024-11-08 18:28:34,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aeadafe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:28:34, skipping insertion in model container [2024-11-08 18:28:34,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:28:34" (3/3) ... [2024-11-08 18:28:34,603 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum.wvr.c [2024-11-08 18:28:34,633 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:28:34,633 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 18:28:34,633 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 18:28:34,839 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-08 18:28:34,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 48 transitions, 117 flow [2024-11-08 18:28:34,962 INFO L124 PetriNetUnfolderBase]: 10/45 cut-off events. [2024-11-08 18:28:34,963 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-08 18:28:34,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 45 events. 10/45 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 60 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-08 18:28:34,967 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 48 transitions, 117 flow [2024-11-08 18:28:34,972 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 44 transitions, 106 flow [2024-11-08 18:28:34,987 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:28:34,998 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;@532def6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:28:34,999 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-08 18:28:35,020 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 18:28:35,021 INFO L124 PetriNetUnfolderBase]: 10/43 cut-off events. [2024-11-08 18:28:35,021 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-08 18:28:35,021 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:28:35,022 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] [2024-11-08 18:28:35,023 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 1 more)] === [2024-11-08 18:28:35,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:28:35,031 INFO L85 PathProgramCache]: Analyzing trace with hash 2040668219, now seen corresponding path program 1 times [2024-11-08 18:28:35,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:28:35,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810319014] [2024-11-08 18:28:35,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:28:35,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:28:35,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:28:35,701 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 18:28:35,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:28:35,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810319014] [2024-11-08 18:28:35,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810319014] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:28:35,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:28:35,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:28:35,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566396609] [2024-11-08 18:28:35,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:28:35,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:28:35,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:28:35,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:28:35,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:28:35,783 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 48 [2024-11-08 18:28:35,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 44 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 18:28:35,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:28:35,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 48 [2024-11-08 18:28:35,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:28:36,356 INFO L124 PetriNetUnfolderBase]: 906/1445 cut-off events. [2024-11-08 18:28:36,357 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2024-11-08 18:28:36,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2746 conditions, 1445 events. 906/1445 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 7115 event pairs, 226 based on Foata normal form. 1/1350 useless extension candidates. Maximal degree in co-relation 2380. Up to 803 conditions per place. [2024-11-08 18:28:36,382 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 42 selfloop transitions, 4 changer transitions 1/63 dead transitions. [2024-11-08 18:28:36,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 63 transitions, 253 flow [2024-11-08 18:28:36,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:28:36,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:28:36,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-11-08 18:28:36,400 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2024-11-08 18:28:36,403 INFO L175 Difference]: Start difference. First operand has 44 places, 44 transitions, 106 flow. Second operand 3 states and 105 transitions. [2024-11-08 18:28:36,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 63 transitions, 253 flow [2024-11-08 18:28:36,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 63 transitions, 231 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-08 18:28:36,419 INFO L231 Difference]: Finished difference. Result has 41 places, 47 transitions, 120 flow [2024-11-08 18:28:36,422 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=41, PETRI_TRANSITIONS=47} [2024-11-08 18:28:36,429 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -3 predicate places. [2024-11-08 18:28:36,430 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 47 transitions, 120 flow [2024-11-08 18:28:36,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 18:28:36,432 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:28:36,432 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] [2024-11-08 18:28:36,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:28:36,434 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 1 more)] === [2024-11-08 18:28:36,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:28:36,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1414361310, now seen corresponding path program 1 times [2024-11-08 18:28:36,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:28:36,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129945798] [2024-11-08 18:28:36,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:28:36,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:28:36,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:28:36,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:28:36,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:28:36,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129945798] [2024-11-08 18:28:36,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129945798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:28:36,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:28:36,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:28:36,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779691723] [2024-11-08 18:28:36,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:28:36,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:28:36,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:28:36,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:28:36,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:28:36,853 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 48 [2024-11-08 18:28:36,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 47 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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 18:28:36,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:28:36,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 48 [2024-11-08 18:28:36,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:28:37,260 INFO L124 PetriNetUnfolderBase]: 792/1307 cut-off events. [2024-11-08 18:28:37,260 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2024-11-08 18:28:37,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2605 conditions, 1307 events. 792/1307 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6563 event pairs, 478 based on Foata normal form. 1/1209 useless extension candidates. Maximal degree in co-relation 897. Up to 995 conditions per place. [2024-11-08 18:28:37,275 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 29 selfloop transitions, 4 changer transitions 7/56 dead transitions. [2024-11-08 18:28:37,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 56 transitions, 218 flow [2024-11-08 18:28:37,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:28:37,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:28:37,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-11-08 18:28:37,278 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5677083333333334 [2024-11-08 18:28:37,279 INFO L175 Difference]: Start difference. First operand has 41 places, 47 transitions, 120 flow. Second operand 4 states and 109 transitions. [2024-11-08 18:28:37,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 56 transitions, 218 flow [2024-11-08 18:28:37,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 56 transitions, 214 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 18:28:37,282 INFO L231 Difference]: Finished difference. Result has 45 places, 49 transitions, 148 flow [2024-11-08 18:28:37,283 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=45, PETRI_TRANSITIONS=49} [2024-11-08 18:28:37,284 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2024-11-08 18:28:37,284 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 49 transitions, 148 flow [2024-11-08 18:28:37,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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 18:28:37,285 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:28:37,285 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] [2024-11-08 18:28:37,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 18:28:37,286 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 1 more)] === [2024-11-08 18:28:37,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:28:37,287 INFO L85 PathProgramCache]: Analyzing trace with hash -366251869, now seen corresponding path program 1 times [2024-11-08 18:28:37,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:28:37,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588803776] [2024-11-08 18:28:37,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:28:37,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:28:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:28:37,443 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:28:37,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:28:37,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588803776] [2024-11-08 18:28:37,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588803776] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:28:37,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:28:37,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:28:37,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420643957] [2024-11-08 18:28:37,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:28:37,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:28:37,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:28:37,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:28:37,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:28:37,480 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-08 18:28:37,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 49 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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 18:28:37,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:28:37,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-08 18:28:37,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:28:37,933 INFO L124 PetriNetUnfolderBase]: 968/1476 cut-off events. [2024-11-08 18:28:37,935 INFO L125 PetriNetUnfolderBase]: For 200/200 co-relation queries the response was YES. [2024-11-08 18:28:37,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3082 conditions, 1476 events. 968/1476 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 6829 event pairs, 316 based on Foata normal form. 0/1402 useless extension candidates. Maximal degree in co-relation 3051. Up to 673 conditions per place. [2024-11-08 18:28:37,950 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 39 selfloop transitions, 4 changer transitions 0/60 dead transitions. [2024-11-08 18:28:37,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 60 transitions, 262 flow [2024-11-08 18:28:37,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:28:37,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:28:37,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-11-08 18:28:37,955 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5885416666666666 [2024-11-08 18:28:37,955 INFO L175 Difference]: Start difference. First operand has 45 places, 49 transitions, 148 flow. Second operand 4 states and 113 transitions. [2024-11-08 18:28:37,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 60 transitions, 262 flow [2024-11-08 18:28:37,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 60 transitions, 252 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-08 18:28:37,962 INFO L231 Difference]: Finished difference. Result has 47 places, 49 transitions, 157 flow [2024-11-08 18:28:37,962 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=157, PETRI_PLACES=47, PETRI_TRANSITIONS=49} [2024-11-08 18:28:37,963 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2024-11-08 18:28:37,964 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 49 transitions, 157 flow [2024-11-08 18:28:37,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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 18:28:37,965 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:28:37,965 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] [2024-11-08 18:28:37,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 18:28:37,966 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 1 more)] === [2024-11-08 18:28:37,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:28:37,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1977582650, now seen corresponding path program 1 times [2024-11-08 18:28:37,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:28:37,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305688897] [2024-11-08 18:28:37,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:28:37,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:28:38,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:28:38,247 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 18:28:38,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:28:38,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305688897] [2024-11-08 18:28:38,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305688897] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:28:38,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648261335] [2024-11-08 18:28:38,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:28:38,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:28:38,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:28:38,253 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:28:38,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:28:38,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:28:38,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 18:28:38,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:28:38,537 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 18:28:38,537 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:28:38,619 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 18:28:38,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648261335] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 18:28:38,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 18:28:38,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 10 [2024-11-08 18:28:38,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660896144] [2024-11-08 18:28:38,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:28:38,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:28:38,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:28:38,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:28:38,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-08 18:28:38,674 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-11-08 18:28:38,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 49 transitions, 157 flow. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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 18:28:38,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:28:38,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-11-08 18:28:38,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:28:39,121 INFO L124 PetriNetUnfolderBase]: 1141/1724 cut-off events. [2024-11-08 18:28:39,122 INFO L125 PetriNetUnfolderBase]: For 534/557 co-relation queries the response was YES. [2024-11-08 18:28:39,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3998 conditions, 1724 events. 1141/1724 cut-off events. For 534/557 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 8275 event pairs, 447 based on Foata normal form. 110/1666 useless extension candidates. Maximal degree in co-relation 3952. Up to 992 conditions per place. [2024-11-08 18:28:39,144 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 46 selfloop transitions, 6 changer transitions 0/63 dead transitions. [2024-11-08 18:28:39,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 63 transitions, 299 flow [2024-11-08 18:28:39,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:28:39,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 18:28:39,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-11-08 18:28:39,148 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-11-08 18:28:39,150 INFO L175 Difference]: Start difference. First operand has 47 places, 49 transitions, 157 flow. Second operand 5 states and 111 transitions. [2024-11-08 18:28:39,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 63 transitions, 299 flow [2024-11-08 18:28:39,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 63 transitions, 293 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 18:28:39,155 INFO L231 Difference]: Finished difference. Result has 52 places, 50 transitions, 184 flow [2024-11-08 18:28:39,157 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=184, PETRI_PLACES=52, PETRI_TRANSITIONS=50} [2024-11-08 18:28:39,159 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 8 predicate places. [2024-11-08 18:28:39,160 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 50 transitions, 184 flow [2024-11-08 18:28:39,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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 18:28:39,161 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:28:39,161 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 18:28:39,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 18:28:39,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:28:39,363 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 1 more)] === [2024-11-08 18:28:39,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:28:39,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1993443361, now seen corresponding path program 1 times [2024-11-08 18:28:39,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:28:39,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968090337] [2024-11-08 18:28:39,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:28:39,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:28:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:28:41,583 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:28:41,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:28:41,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968090337] [2024-11-08 18:28:41,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968090337] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:28:41,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482196695] [2024-11-08 18:28:41,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:28:41,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:28:41,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:28:41,589 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:28:41,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 18:28:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:28:41,773 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-08 18:28:41,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:28:41,836 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 18:28:41,978 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 15 treesize of output 1 [2024-11-08 18:28:42,116 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 18:28:42,116 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 18:28:42,197 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 15 treesize of output 1 [2024-11-08 18:28:42,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-08 18:28:42,645 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:28:42,645 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:29:00,547 INFO L349 Elim1Store]: treesize reduction 28, result has 64.6 percent of original size [2024-11-08 18:29:00,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 792 treesize of output 602 [2024-11-08 18:29:00,715 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:29:00,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 582 treesize of output 542 [2024-11-08 18:29:15,450 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-08 18:29:25,237 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-08 18:29:28,103 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-08 18:29:29,288 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-08 18:29:34,082 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-08 18:29:36,425 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-08 18:29:37,281 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-08 18:29:37,481 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-08 18:29:39,930 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-08 18:29:42,419 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-11-08 18:29:42,520 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-11-08 18:29:42,862 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-08 18:29:42,862 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 15 treesize of output 11 [2024-11-08 18:29:42,929 INFO L349 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2024-11-08 18:29:42,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 58 treesize of output 36 [2024-11-08 18:29:42,980 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-11-08 18:29:42,988 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-11-08 18:29:51,231 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:29:51,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482196695] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:29:51,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:29:51,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 32 [2024-11-08 18:29:51,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748281674] [2024-11-08 18:29:51,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:29:51,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-08 18:29:51,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:29:51,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-08 18:29:51,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=908, Unknown=5, NotChecked=0, Total=1056 [2024-11-08 18:29:56,298 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 18:30:00,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:30:05,205 WARN L539 Checker$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 18:30:09,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:30:10,614 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 48 [2024-11-08 18:30:10,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 50 transitions, 184 flow. Second operand has 33 states, 33 states have (on average 6.484848484848484) internal successors, (214), 33 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:10,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:30:10,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 48 [2024-11-08 18:30:10,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:30:13,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:30:17,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:30:26,850 WARN L539 Checker$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 18:30:31,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:30:35,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:30:39,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:30:47,345 WARN L539 Checker$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 18:31:03,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:31:23,819 WARN L539 Checker$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 18:31:27,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:31:31,866 WARN L539 Checker$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 18:31:35,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:31:40,051 WARN L539 Checker$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 18:31:44,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:31:48,124 WARN L539 Checker$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 18:31:52,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:32:29,626 WARN L539 Checker$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 18:32:33,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:32:35,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:32:39,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:32:43,216 WARN L539 Checker$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 18:32:48,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:32:53,352 WARN L539 Checker$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 18:32:55,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:32:57,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:33:01,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:33:05,812 WARN L539 Checker$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 18:33:10,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:33:15,554 WARN L539 Checker$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 18:33:16,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:33:20,986 WARN L539 Checker$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 18:33:25,080 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 18:33:25,156 INFO L124 PetriNetUnfolderBase]: 7814/10931 cut-off events. [2024-11-08 18:33:25,156 INFO L125 PetriNetUnfolderBase]: For 6784/6784 co-relation queries the response was YES. [2024-11-08 18:33:25,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29319 conditions, 10931 events. 7814/10931 cut-off events. For 6784/6784 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 53649 event pairs, 766 based on Foata normal form. 2/9979 useless extension candidates. Maximal degree in co-relation 15839. Up to 4017 conditions per place. [2024-11-08 18:33:25,233 INFO L140 encePairwiseOnDemand]: 29/48 looper letters, 272 selfloop transitions, 78 changer transitions 2/353 dead transitions. [2024-11-08 18:33:25,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 353 transitions, 1850 flow [2024-11-08 18:33:25,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-08 18:33:25,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-08 18:33:25,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 475 transitions. [2024-11-08 18:33:25,236 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3092447916666667 [2024-11-08 18:33:25,236 INFO L175 Difference]: Start difference. First operand has 52 places, 50 transitions, 184 flow. Second operand 32 states and 475 transitions. [2024-11-08 18:33:25,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 353 transitions, 1850 flow [2024-11-08 18:33:25,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 353 transitions, 1818 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 18:33:25,254 INFO L231 Difference]: Finished difference. Result has 93 places, 119 transitions, 759 flow [2024-11-08 18:33:25,254 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=759, PETRI_PLACES=93, PETRI_TRANSITIONS=119} [2024-11-08 18:33:25,255 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 49 predicate places. [2024-11-08 18:33:25,255 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 119 transitions, 759 flow [2024-11-08 18:33:25,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 6.484848484848484) internal successors, (214), 33 states have internal predecessors, (214), 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 18:33:25,255 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:33:25,255 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 18:33:25,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 18:33:25,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:33:25,460 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 1 more)] === [2024-11-08 18:33:25,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:33:25,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1203829719, now seen corresponding path program 2 times [2024-11-08 18:33:25,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:33:25,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356689878] [2024-11-08 18:33:25,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:33:25,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:33:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:33:27,290 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:33:27,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:33:27,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356689878] [2024-11-08 18:33:27,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356689878] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:33:27,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544999948] [2024-11-08 18:33:27,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:33:27,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:33:27,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:33:27,294 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:33:27,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 18:33:27,430 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:33:27,430 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:33:27,432 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-08 18:33:27,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:33:27,846 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 15 treesize of output 1 [2024-11-08 18:33:28,521 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:33:28,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 19 [2024-11-08 18:33:28,582 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:33:28,582 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:33:29,122 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:33:29,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 256 treesize of output 240 [2024-11-08 18:33:29,764 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:33:29,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 283 treesize of output 243 [2024-11-08 18:33:29,799 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:33:29,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 166 treesize of output 130 [2024-11-08 18:33:30,048 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:33:30,049 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 283 treesize of output 243 [2024-11-08 18:33:30,086 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:33:30,087 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 166 treesize of output 130 [2024-11-08 18:33:30,649 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:33:30,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544999948] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:33:30,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:33:30,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 11] total 33 [2024-11-08 18:33:30,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323238001] [2024-11-08 18:33:30,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:33:30,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-08 18:33:30,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:33:30,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-08 18:33:30,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=957, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 18:33:32,308 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 48 [2024-11-08 18:33:32,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 119 transitions, 759 flow. Second operand has 34 states, 34 states have (on average 10.441176470588236) internal successors, (355), 34 states have internal predecessors, (355), 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 18:33:32,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:33:32,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 48 [2024-11-08 18:33:32,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:33:37,926 INFO L124 PetriNetUnfolderBase]: 6134/9030 cut-off events. [2024-11-08 18:33:37,926 INFO L125 PetriNetUnfolderBase]: For 13736/14071 co-relation queries the response was YES. [2024-11-08 18:33:37,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29381 conditions, 9030 events. 6134/9030 cut-off events. For 13736/14071 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 50751 event pairs, 1176 based on Foata normal form. 4/8971 useless extension candidates. Maximal degree in co-relation 27491. Up to 5478 conditions per place. [2024-11-08 18:33:38,040 INFO L140 encePairwiseOnDemand]: 27/48 looper letters, 254 selfloop transitions, 119 changer transitions 2/381 dead transitions. [2024-11-08 18:33:38,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 381 transitions, 2685 flow [2024-11-08 18:33:38,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-08 18:33:38,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-08 18:33:38,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 573 transitions. [2024-11-08 18:33:38,044 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35110294117647056 [2024-11-08 18:33:38,044 INFO L175 Difference]: Start difference. First operand has 93 places, 119 transitions, 759 flow. Second operand 34 states and 573 transitions. [2024-11-08 18:33:38,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 381 transitions, 2685 flow [2024-11-08 18:33:38,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 381 transitions, 2501 flow, removed 87 selfloop flow, removed 2 redundant places. [2024-11-08 18:33:38,084 INFO L231 Difference]: Finished difference. Result has 141 places, 214 transitions, 1719 flow [2024-11-08 18:33:38,085 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1719, PETRI_PLACES=141, PETRI_TRANSITIONS=214} [2024-11-08 18:33:38,086 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 97 predicate places. [2024-11-08 18:33:38,087 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 214 transitions, 1719 flow [2024-11-08 18:33:38,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 10.441176470588236) internal successors, (355), 34 states have internal predecessors, (355), 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 18:33:38,087 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:33:38,087 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 18:33:38,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 18:33:38,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:33:38,289 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 1 more)] === [2024-11-08 18:33:38,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:33:38,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1209985297, now seen corresponding path program 3 times [2024-11-08 18:33:38,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:33:38,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861258150] [2024-11-08 18:33:38,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:33:38,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:33:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:33:40,130 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:33:40,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:33:40,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861258150] [2024-11-08 18:33:40,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861258150] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:33:40,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845420340] [2024-11-08 18:33:40,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:33:40,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:33:40,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:33:40,134 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:33:40,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 18:33:40,267 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-08 18:33:40,267 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:33:40,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-08 18:33:40,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:33:40,652 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 15 treesize of output 1 [2024-11-08 18:33:41,350 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:33:41,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 19 [2024-11-08 18:33:41,394 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:33:41,394 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:33:41,868 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:33:41,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 248 treesize of output 232 [2024-11-08 18:33:42,293 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:33:42,293 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 283 treesize of output 243 [2024-11-08 18:33:42,326 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:33:42,326 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 182 treesize of output 134 [2024-11-08 18:33:42,517 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:33:42,518 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 112 treesize of output 104 [2024-11-08 18:33:42,545 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:33:42,546 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 96 treesize of output 72 [2024-11-08 18:33:42,950 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:33:42,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845420340] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:33:42,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:33:42,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 11] total 33 [2024-11-08 18:33:42,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458307298] [2024-11-08 18:33:42,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:33:42,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-08 18:33:42,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:33:42,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-08 18:33:42,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=950, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 18:33:44,342 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 48 [2024-11-08 18:33:44,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 214 transitions, 1719 flow. Second operand has 34 states, 34 states have (on average 10.470588235294118) internal successors, (356), 34 states have internal predecessors, (356), 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 18:33:44,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:33:44,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 48 [2024-11-08 18:33:44,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:33:48,808 INFO L124 PetriNetUnfolderBase]: 8472/12526 cut-off events. [2024-11-08 18:33:48,808 INFO L125 PetriNetUnfolderBase]: For 28660/28992 co-relation queries the response was YES. [2024-11-08 18:33:48,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44842 conditions, 12526 events. 8472/12526 cut-off events. For 28660/28992 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 75201 event pairs, 1607 based on Foata normal form. 2/12446 useless extension candidates. Maximal degree in co-relation 42877. Up to 8420 conditions per place. [2024-11-08 18:33:49,019 INFO L140 encePairwiseOnDemand]: 29/48 looper letters, 299 selfloop transitions, 128 changer transitions 2/435 dead transitions. [2024-11-08 18:33:49,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 435 transitions, 3644 flow [2024-11-08 18:33:49,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-08 18:33:49,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-08 18:33:49,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 490 transitions. [2024-11-08 18:33:49,024 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37808641975308643 [2024-11-08 18:33:49,024 INFO L175 Difference]: Start difference. First operand has 141 places, 214 transitions, 1719 flow. Second operand 27 states and 490 transitions. [2024-11-08 18:33:49,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 435 transitions, 3644 flow [2024-11-08 18:33:49,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 435 transitions, 3485 flow, removed 72 selfloop flow, removed 6 redundant places. [2024-11-08 18:33:49,256 INFO L231 Difference]: Finished difference. Result has 168 places, 276 transitions, 2514 flow [2024-11-08 18:33:49,256 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1584, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2514, PETRI_PLACES=168, PETRI_TRANSITIONS=276} [2024-11-08 18:33:49,257 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 124 predicate places. [2024-11-08 18:33:49,257 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 276 transitions, 2514 flow [2024-11-08 18:33:49,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 10.470588235294118) internal successors, (356), 34 states have internal predecessors, (356), 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 18:33:49,262 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:33:49,262 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 18:33:49,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 18:33:49,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:33:49,463 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 1 more)] === [2024-11-08 18:33:49,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:33:49,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1404430571, now seen corresponding path program 4 times [2024-11-08 18:33:49,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:33:49,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131470835] [2024-11-08 18:33:49,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:33:49,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:33:49,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:33:50,930 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:33:50,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:33:50,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131470835] [2024-11-08 18:33:50,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131470835] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:33:50,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700180059] [2024-11-08 18:33:50,931 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 18:33:50,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:33:50,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:33:50,933 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:33:50,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 18:33:51,047 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 18:33:51,047 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:33:51,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-08 18:33:51,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:33:51,064 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 18:33:51,155 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 15 treesize of output 1 [2024-11-08 18:33:51,300 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 18:33:51,301 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 18:33:51,369 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 15 treesize of output 1 [2024-11-08 18:33:51,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-08 18:33:51,858 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:33:51,858 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:34:09,078 INFO L349 Elim1Store]: treesize reduction 28, result has 64.6 percent of original size [2024-11-08 18:34:09,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 3054 treesize of output 2144 [2024-11-08 18:34:09,226 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:34:09,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 921 treesize of output 849 [2024-11-08 18:34:44,519 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:34:44,519 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 57 treesize of output 55 [2024-11-08 18:34:52,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:34:52,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700180059] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:34:52,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:34:52,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 34 [2024-11-08 18:34:52,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489494052] [2024-11-08 18:34:52,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:34:52,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-08 18:34:52,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:34:52,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-08 18:34:52,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1036, Unknown=5, NotChecked=0, Total=1190 [2024-11-08 18:34:57,297 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 18:35:01,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:35:05,496 WARN L539 Checker$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 18:35:09,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:35:13,962 WARN L539 Checker$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 18:35:14,128 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 48 [2024-11-08 18:35:14,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 276 transitions, 2514 flow. Second operand has 35 states, 35 states have (on average 6.571428571428571) internal successors, (230), 35 states have internal predecessors, (230), 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 18:35:14,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:35:14,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 48 [2024-11-08 18:35:14,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:35:18,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:35:30,779 WARN L539 Checker$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 18:35:34,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:35:38,816 WARN L539 Checker$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 18:35:42,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:36:07,958 WARN L539 Checker$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 18:36:11,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:36:16,074 WARN L539 Checker$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 18:36:20,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:36:24,133 WARN L539 Checker$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 18:36:32,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:36:36,431 WARN L539 Checker$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 18:36:48,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:36:52,674 WARN L539 Checker$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 18:36:56,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:37:00,701 WARN L539 Checker$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 18:37:04,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:37:08,811 WARN L539 Checker$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 18:37:10,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:37:18,574 WARN L539 Checker$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 18:37:22,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:37:26,713 WARN L539 Checker$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 18:37:30,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:37:34,912 WARN L539 Checker$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 18:37:39,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:37:43,096 WARN L539 Checker$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 18:37:47,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:37:51,307 WARN L539 Checker$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 18:37:55,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:37:59,641 WARN L539 Checker$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 18:38:07,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:38:11,869 WARN L539 Checker$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 18:38:15,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:38:19,911 WARN L539 Checker$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 18:38:24,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:38:28,194 WARN L539 Checker$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 18:38:32,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:38:36,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:38:44,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:38:48,970 WARN L539 Checker$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 18:38:53,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:38:57,044 WARN L539 Checker$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 18:39:01,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:39:05,128 WARN L539 Checker$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 18:39:09,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:39:13,197 WARN L539 Checker$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 18:39:17,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:39:21,553 WARN L539 Checker$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 18:39:25,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:39:29,609 WARN L539 Checker$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 18:39:33,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:39:37,684 WARN L539 Checker$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 18:39:46,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:39:50,393 WARN L539 Checker$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 18:39:54,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:39:58,456 WARN L539 Checker$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 18:40:02,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:40:06,528 WARN L539 Checker$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 18:40:10,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:40:14,969 WARN L539 Checker$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 18:40:19,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:40:23,370 WARN L539 Checker$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 18:40:27,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:40:30,331 INFO L124 PetriNetUnfolderBase]: 19586/27241 cut-off events. [2024-11-08 18:40:30,331 INFO L125 PetriNetUnfolderBase]: For 71726/71726 co-relation queries the response was YES. [2024-11-08 18:40:30,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98690 conditions, 27241 events. 19586/27241 cut-off events. For 71726/71726 co-relation queries the response was YES. Maximal size of possible extension queue 861. Compared 150363 event pairs, 5471 based on Foata normal form. 1/24920 useless extension candidates. Maximal degree in co-relation 95037. Up to 21555 conditions per place. [2024-11-08 18:40:30,640 INFO L140 encePairwiseOnDemand]: 29/48 looper letters, 367 selfloop transitions, 128 changer transitions 1/497 dead transitions. [2024-11-08 18:40:30,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 497 transitions, 4363 flow [2024-11-08 18:40:30,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-08 18:40:30,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-08 18:40:30,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 418 transitions. [2024-11-08 18:40:30,643 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30028735632183906 [2024-11-08 18:40:30,643 INFO L175 Difference]: Start difference. First operand has 168 places, 276 transitions, 2514 flow. Second operand 29 states and 418 transitions. [2024-11-08 18:40:30,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 497 transitions, 4363 flow [2024-11-08 18:40:31,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 497 transitions, 4176 flow, removed 64 selfloop flow, removed 11 redundant places. [2024-11-08 18:40:31,520 INFO L231 Difference]: Finished difference. Result has 197 places, 312 transitions, 3052 flow [2024-11-08 18:40:31,521 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2331, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=3052, PETRI_PLACES=197, PETRI_TRANSITIONS=312} [2024-11-08 18:40:31,522 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 153 predicate places. [2024-11-08 18:40:31,522 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 312 transitions, 3052 flow [2024-11-08 18:40:31,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 6.571428571428571) internal successors, (230), 35 states have internal predecessors, (230), 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 18:40:31,522 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:40:31,522 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 18:40:31,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 18:40:31,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:40:31,723 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 1 more)] === [2024-11-08 18:40:31,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:40:31,723 INFO L85 PathProgramCache]: Analyzing trace with hash 2014924223, now seen corresponding path program 5 times [2024-11-08 18:40:31,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:40:31,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038108918] [2024-11-08 18:40:31,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:40:31,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:40:31,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:40:33,493 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:40:33,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:40:33,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038108918] [2024-11-08 18:40:33,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038108918] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:40:33,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649768616] [2024-11-08 18:40:33,494 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 18:40:33,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:40:33,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:40:33,495 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:40:33,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 18:40:33,606 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-08 18:40:33,606 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:40:33,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-08 18:40:33,615 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:40:33,749 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 15 treesize of output 1 [2024-11-08 18:40:34,411 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:40:34,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 19 [2024-11-08 18:40:34,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:40:34,425 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:40:34,957 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 18:40:34,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649768616] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:40:34,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:40:34,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 9] total 32 [2024-11-08 18:40:34,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855825144] [2024-11-08 18:40:34,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:40:34,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-08 18:40:34,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:40:34,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-08 18:40:34,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 18:40:36,337 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 48 [2024-11-08 18:40:36,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 312 transitions, 3052 flow. Second operand has 33 states, 33 states have (on average 8.575757575757576) internal successors, (283), 33 states have internal predecessors, (283), 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 18:40:36,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:40:36,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 48 [2024-11-08 18:40:36,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:40:49,547 INFO L124 PetriNetUnfolderBase]: 23053/34122 cut-off events. [2024-11-08 18:40:49,548 INFO L125 PetriNetUnfolderBase]: For 140985/142754 co-relation queries the response was YES. [2024-11-08 18:40:50,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137195 conditions, 34122 events. 23053/34122 cut-off events. For 140985/142754 co-relation queries the response was YES. Maximal size of possible extension queue 1422. Compared 230235 event pairs, 2171 based on Foata normal form. 38/31711 useless extension candidates. Maximal degree in co-relation 135886. Up to 18784 conditions per place. [2024-11-08 18:40:50,168 INFO L140 encePairwiseOnDemand]: 22/48 looper letters, 572 selfloop transitions, 763 changer transitions 3/1344 dead transitions. [2024-11-08 18:40:50,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 1344 transitions, 15041 flow [2024-11-08 18:40:50,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-08 18:40:50,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2024-11-08 18:40:50,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 892 transitions. [2024-11-08 18:40:50,173 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3046448087431694 [2024-11-08 18:40:50,173 INFO L175 Difference]: Start difference. First operand has 197 places, 312 transitions, 3052 flow. Second operand 61 states and 892 transitions. [2024-11-08 18:40:50,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 1344 transitions, 15041 flow [2024-11-08 18:40:51,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 1344 transitions, 14831 flow, removed 76 selfloop flow, removed 12 redundant places. [2024-11-08 18:40:51,571 INFO L231 Difference]: Finished difference. Result has 286 places, 994 transitions, 13702 flow [2024-11-08 18:40:51,571 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2955, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=13702, PETRI_PLACES=286, PETRI_TRANSITIONS=994} [2024-11-08 18:40:51,572 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 242 predicate places. [2024-11-08 18:40:51,572 INFO L471 AbstractCegarLoop]: Abstraction has has 286 places, 994 transitions, 13702 flow [2024-11-08 18:40:51,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 8.575757575757576) internal successors, (283), 33 states have internal predecessors, (283), 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 18:40:51,572 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:40:51,573 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 18:40:51,586 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 18:40:51,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-08 18:40:51,773 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 1 more)] === [2024-11-08 18:40:51,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:40:51,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1785722749, now seen corresponding path program 6 times [2024-11-08 18:40:51,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:40:51,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5900763] [2024-11-08 18:40:51,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:40:51,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:40:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:40:53,193 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:40:53,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:40:53,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5900763] [2024-11-08 18:40:53,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5900763] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:40:53,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514943254] [2024-11-08 18:40:53,193 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 18:40:53,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:40:53,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:40:53,195 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:40:53,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 18:40:53,305 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-08 18:40:53,305 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:40:53,307 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-08 18:40:53,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:40:53,459 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 15 treesize of output 1 [2024-11-08 18:40:53,954 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:40:53,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 19 [2024-11-08 18:40:53,979 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:40:53,980 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:40:54,412 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 18:40:54,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514943254] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:40:54,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:40:54,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 9] total 27 [2024-11-08 18:40:54,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043122219] [2024-11-08 18:40:54,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:40:54,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-08 18:40:54,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:40:54,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-08 18:40:54,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=647, Unknown=0, NotChecked=0, Total=756 [2024-11-08 18:40:55,872 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-11-08 18:40:55,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 994 transitions, 13702 flow. Second operand has 28 states, 28 states have (on average 11.571428571428571) internal successors, (324), 28 states have internal predecessors, (324), 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 18:40:55,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:40:55,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-11-08 18:40:55,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:41:17,022 INFO L124 PetriNetUnfolderBase]: 29007/42905 cut-off events. [2024-11-08 18:41:17,022 INFO L125 PetriNetUnfolderBase]: For 451689/454096 co-relation queries the response was YES. [2024-11-08 18:41:17,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245769 conditions, 42905 events. 29007/42905 cut-off events. For 451689/454096 co-relation queries the response was YES. Maximal size of possible extension queue 1732. Compared 298262 event pairs, 3245 based on Foata normal form. 3/42878 useless extension candidates. Maximal degree in co-relation 244115. Up to 22375 conditions per place. [2024-11-08 18:41:18,404 INFO L140 encePairwiseOnDemand]: 25/48 looper letters, 661 selfloop transitions, 1052 changer transitions 2/1728 dead transitions. [2024-11-08 18:41:18,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 1728 transitions, 26324 flow [2024-11-08 18:41:18,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-08 18:41:18,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2024-11-08 18:41:18,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 789 transitions. [2024-11-08 18:41:18,410 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38226744186046513 [2024-11-08 18:41:18,410 INFO L175 Difference]: Start difference. First operand has 286 places, 994 transitions, 13702 flow. Second operand 43 states and 789 transitions. [2024-11-08 18:41:18,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 1728 transitions, 26324 flow [2024-11-08 18:41:29,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 1728 transitions, 25218 flow, removed 345 selfloop flow, removed 3 redundant places. [2024-11-08 18:41:29,263 INFO L231 Difference]: Finished difference. Result has 351 places, 1412 transitions, 23194 flow [2024-11-08 18:41:29,264 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=12920, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=994, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=675, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=23194, PETRI_PLACES=351, PETRI_TRANSITIONS=1412} [2024-11-08 18:41:29,265 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 307 predicate places. [2024-11-08 18:41:29,265 INFO L471 AbstractCegarLoop]: Abstraction has has 351 places, 1412 transitions, 23194 flow [2024-11-08 18:41:29,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 11.571428571428571) internal successors, (324), 28 states have internal predecessors, (324), 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 18:41:29,266 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:41:29,266 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 18:41:29,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 18:41:29,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 18:41:29,467 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 1 more)] === [2024-11-08 18:41:29,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:41:29,468 INFO L85 PathProgramCache]: Analyzing trace with hash 155739835, now seen corresponding path program 7 times [2024-11-08 18:41:29,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:41:29,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080150377] [2024-11-08 18:41:29,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:41:29,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:41:29,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:41:30,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:41:30,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:41:30,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080150377] [2024-11-08 18:41:30,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080150377] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:41:30,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134864744] [2024-11-08 18:41:30,978 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 18:41:30,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:41:30,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:41:30,981 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:41:30,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c6f8daa-aad2-42fb-9e71-36971a5b7770/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 18:41:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:41:31,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-08 18:41:31,118 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:41:31,133 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 18:41:31,254 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 15 treesize of output 1 [2024-11-08 18:41:31,402 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 18:41:31,403 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 18:41:31,505 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 15 treesize of output 1 [2024-11-08 18:41:32,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-08 18:41:32,104 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:41:32,104 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:41:45,338 INFO L349 Elim1Store]: treesize reduction 28, result has 64.6 percent of original size [2024-11-08 18:41:45,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 3222 treesize of output 2312 [2024-11-08 18:41:45,462 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:41:45,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 864 treesize of output 806 [2024-11-08 18:41:56,599 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:41:56,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134864744] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:41:56,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:41:56,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 34 [2024-11-08 18:41:56,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188945347] [2024-11-08 18:41:56,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:41:56,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-08 18:41:56,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:41:56,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-08 18:41:56,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1015, Unknown=5, NotChecked=0, Total=1190 [2024-11-08 18:42:01,189 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 18:42:05,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:42:09,367 WARN L539 Checker$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 18:42:13,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:42:17,731 WARN L539 Checker$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 18:42:17,875 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 48 [2024-11-08 18:42:17,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 1412 transitions, 23194 flow. Second operand has 35 states, 35 states have (on average 6.571428571428571) internal successors, (230), 35 states have internal predecessors, (230), 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 18:42:17,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:42:17,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 48 [2024-11-08 18:42:17,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:42:22,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:42:34,725 WARN L539 Checker$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 18:42:39,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-08 18:42:43,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]