./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-poker-hand-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-poker-hand-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya --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 6f5429be3277265830db62d0e901249d8c763b3d6d062789dc5a6193a05c0714 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:31:27,878 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:31:27,951 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 01:31:27,956 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:31:27,956 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:31:27,980 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:31:27,981 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:31:27,981 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:31:27,982 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:31:27,983 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:31:27,983 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:31:27,984 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:31:27,984 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:31:27,985 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:31:27,986 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:31:27,986 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:31:27,987 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:31:27,987 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:31:27,988 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:31:27,988 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:31:27,989 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:31:27,989 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:31:27,990 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:31:27,990 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:31:27,991 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:31:27,991 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:31:27,992 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:31:27,992 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:31:27,993 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:31:27,993 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:31:27,994 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:31:27,994 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:31:27,995 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:31:27,995 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:31:27,995 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:31:27,995 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:31:27,996 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:31:27,996 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:31:27,996 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:31:27,996 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:31:27,996 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:31:27,997 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:31:27,997 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_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f5429be3277265830db62d0e901249d8c763b3d6d062789dc5a6193a05c0714 [2023-11-29 01:31:28,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:31:28,243 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:31:28,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:31:28,247 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:31:28,248 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:31:28,249 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/chl-poker-hand-subst.wvr.c [2023-11-29 01:31:30,992 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:31:31,222 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:31:31,223 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/sv-benchmarks/c/weaver/chl-poker-hand-subst.wvr.c [2023-11-29 01:31:31,235 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/data/60e2df669/d4eb1d34d1ec4a0baf34e3acd9f02745/FLAG239bfc216 [2023-11-29 01:31:31,249 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/data/60e2df669/d4eb1d34d1ec4a0baf34e3acd9f02745 [2023-11-29 01:31:31,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:31:31,253 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:31:31,254 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:31:31,254 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:31:31,260 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:31:31,260 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:31:31" (1/1) ... [2023-11-29 01:31:31,261 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cc413dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:31, skipping insertion in model container [2023-11-29 01:31:31,262 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:31:31" (1/1) ... [2023-11-29 01:31:31,304 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:31:31,586 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/sv-benchmarks/c/weaver/chl-poker-hand-subst.wvr.c[19288,19301] [2023-11-29 01:31:31,596 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:31:31,608 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:31:31,694 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/sv-benchmarks/c/weaver/chl-poker-hand-subst.wvr.c[19288,19301] [2023-11-29 01:31:31,698 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:31:31,707 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:31:31,707 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:31:31,715 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:31:31,716 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:31 WrapperNode [2023-11-29 01:31:31,716 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:31:31,717 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:31:31,717 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:31:31,718 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:31:31,725 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:31" (1/1) ... [2023-11-29 01:31:31,749 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:31" (1/1) ... [2023-11-29 01:31:31,827 INFO L138 Inliner]: procedures = 26, calls = 454, calls flagged for inlining = 100, calls inlined = 144, statements flattened = 2378 [2023-11-29 01:31:31,827 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:31:31,828 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:31:31,828 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:31:31,828 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:31:31,840 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:31" (1/1) ... [2023-11-29 01:31:31,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:31" (1/1) ... [2023-11-29 01:31:31,852 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:31" (1/1) ... [2023-11-29 01:31:31,896 INFO L175 MemorySlicer]: Split 284 memory accesses to 5 slices as follows [2, 276, 2, 2, 2]. 97 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 15 writes are split as follows [0, 12, 1, 1, 1]. [2023-11-29 01:31:31,896 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:31" (1/1) ... [2023-11-29 01:31:31,896 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:31" (1/1) ... [2023-11-29 01:31:31,954 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:31" (1/1) ... [2023-11-29 01:31:31,974 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:31" (1/1) ... [2023-11-29 01:31:31,982 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:31" (1/1) ... [2023-11-29 01:31:31,993 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:31" (1/1) ... [2023-11-29 01:31:32,006 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:31:32,007 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:31:32,007 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:31:32,007 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:31:32,008 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:31" (1/1) ... [2023-11-29 01:31:32,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:31:32,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:32,035 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:31:32,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:31:32,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:31:32,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:31:32,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 01:31:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 01:31:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 01:31:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 01:31:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 01:31:32,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 01:31:32,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 01:31:32,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 01:31:32,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 01:31:32,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 01:31:32,079 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 01:31:32,080 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 01:31:32,080 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 01:31:32,080 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 01:31:32,080 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 01:31:32,080 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 01:31:32,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:31:32,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 01:31:32,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 01:31:32,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 01:31:32,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 01:31:32,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 01:31:32,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 01:31:32,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 01:31:32,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:31:32,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:31:32,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:31:32,085 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 01:31:32,301 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:31:32,303 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:31:34,366 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:31:36,951 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:31:36,951 INFO L309 CfgBuilder]: Removed 18 assume(true) statements. [2023-11-29 01:31:36,952 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:31:36 BoogieIcfgContainer [2023-11-29 01:31:36,952 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:31:36,954 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:31:36,954 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:31:36,957 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:31:36,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:31:31" (1/3) ... [2023-11-29 01:31:36,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d959acc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:31:36, skipping insertion in model container [2023-11-29 01:31:36,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:31:31" (2/3) ... [2023-11-29 01:31:36,959 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d959acc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:31:36, skipping insertion in model container [2023-11-29 01:31:36,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:31:36" (3/3) ... [2023-11-29 01:31:36,960 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-subst.wvr.c [2023-11-29 01:31:36,969 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 01:31:36,978 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:31:36,978 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:31:36,978 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 01:31:37,393 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 01:31:37,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 141 transitions, 303 flow [2023-11-29 01:31:37,496 INFO L124 PetriNetUnfolderBase]: 42/138 cut-off events. [2023-11-29 01:31:37,496 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 01:31:37,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 138 events. 42/138 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 423 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 108. Up to 7 conditions per place. [2023-11-29 01:31:37,501 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 141 transitions, 303 flow [2023-11-29 01:31:37,507 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 137 transitions, 292 flow [2023-11-29 01:31:37,516 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:31:37,522 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@53e686e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:31:37,522 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-29 01:31:37,629 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 01:31:37,629 INFO L124 PetriNetUnfolderBase]: 42/136 cut-off events. [2023-11-29 01:31:37,629 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 01:31:37,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:31:37,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:37,631 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 01:31:37,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:37,636 INFO L85 PathProgramCache]: Analyzing trace with hash -906619009, now seen corresponding path program 1 times [2023-11-29 01:31:37,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:37,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081316740] [2023-11-29 01:31:37,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:37,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:38,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:31:38,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:38,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081316740] [2023-11-29 01:31:38,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081316740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:38,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:38,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:31:38,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038198516] [2023-11-29 01:31:38,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:38,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:31:38,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:38,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:31:38,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:31:38,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 141 [2023-11-29 01:31:38,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 137 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:38,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:31:38,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 141 [2023-11-29 01:31:38,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:32:03,431 INFO L124 PetriNetUnfolderBase]: 75661/99903 cut-off events. [2023-11-29 01:32:03,431 INFO L125 PetriNetUnfolderBase]: For 1855/1855 co-relation queries the response was YES. [2023-11-29 01:32:03,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199394 conditions, 99903 events. 75661/99903 cut-off events. For 1855/1855 co-relation queries the response was YES. Maximal size of possible extension queue 3950. Compared 613204 event pairs, 51697 based on Foata normal form. 5988/81389 useless extension candidates. Maximal degree in co-relation 191890. Up to 97983 conditions per place. [2023-11-29 01:32:04,082 INFO L140 encePairwiseOnDemand]: 122/141 looper letters, 117 selfloop transitions, 12 changer transitions 0/137 dead transitions. [2023-11-29 01:32:04,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 137 transitions, 550 flow [2023-11-29 01:32:04,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:32:04,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:32:04,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2023-11-29 01:32:04,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41134751773049644 [2023-11-29 01:32:04,095 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 174 transitions. [2023-11-29 01:32:04,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 174 transitions. [2023-11-29 01:32:04,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:32:04,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 174 transitions. [2023-11-29 01:32:04,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:32:04,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:32:04,106 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:32:04,107 INFO L175 Difference]: Start difference. First operand has 105 places, 137 transitions, 292 flow. Second operand 3 states and 174 transitions. [2023-11-29 01:32:04,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 137 transitions, 550 flow [2023-11-29 01:32:04,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 137 transitions, 538 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-29 01:32:04,134 INFO L231 Difference]: Finished difference. Result has 102 places, 137 transitions, 330 flow [2023-11-29 01:32:04,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=330, PETRI_PLACES=102, PETRI_TRANSITIONS=137} [2023-11-29 01:32:04,139 INFO L281 CegarLoopForPetriNet]: 105 programPoint places, -3 predicate places. [2023-11-29 01:32:04,139 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 137 transitions, 330 flow [2023-11-29 01:32:04,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:32:04,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:32:04,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:32:04,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:32:04,141 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 01:32:04,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:32:04,141 INFO L85 PathProgramCache]: Analyzing trace with hash -2146036881, now seen corresponding path program 1 times [2023-11-29 01:32:04,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:32:04,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903891765] [2023-11-29 01:32:04,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:32:04,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:32:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:04,457 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:32:04,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:32:04,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903891765] [2023-11-29 01:32:04,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903891765] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:32:04,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631674422] [2023-11-29 01:32:04,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:32:04,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:32:04,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:32:04,462 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:32:04,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:32:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:05,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:32:05,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:32:05,200 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:32:05,200 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:32:05,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631674422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:32:05,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:32:05,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-29 01:32:05,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543914722] [2023-11-29 01:32:05,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:32:05,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:32:05,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:32:05,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:32:05,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:32:05,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 141 [2023-11-29 01:32:05,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 137 transitions, 330 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:32:05,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:32:05,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 141 [2023-11-29 01:32:05,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:32:26,525 INFO L124 PetriNetUnfolderBase]: 75661/99909 cut-off events. [2023-11-29 01:32:26,525 INFO L125 PetriNetUnfolderBase]: For 437/437 co-relation queries the response was YES. [2023-11-29 01:32:26,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198439 conditions, 99909 events. 75661/99909 cut-off events. For 437/437 co-relation queries the response was YES. Maximal size of possible extension queue 3950. Compared 613625 event pairs, 51697 based on Foata normal form. 1/75414 useless extension candidates. Maximal degree in co-relation 198342. Up to 97989 conditions per place. [2023-11-29 01:32:26,923 INFO L140 encePairwiseOnDemand]: 128/141 looper letters, 123 selfloop transitions, 12 changer transitions 0/143 dead transitions. [2023-11-29 01:32:26,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 143 transitions, 612 flow [2023-11-29 01:32:26,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:32:26,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:32:26,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 168 transitions. [2023-11-29 01:32:26,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3971631205673759 [2023-11-29 01:32:26,926 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 168 transitions. [2023-11-29 01:32:26,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 168 transitions. [2023-11-29 01:32:26,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:32:26,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 168 transitions. [2023-11-29 01:32:26,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:32:26,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:32:26,932 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:32:26,932 INFO L175 Difference]: Start difference. First operand has 102 places, 137 transitions, 330 flow. Second operand 3 states and 168 transitions. [2023-11-29 01:32:26,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 143 transitions, 612 flow [2023-11-29 01:32:26,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 143 transitions, 600 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:32:26,937 INFO L231 Difference]: Finished difference. Result has 104 places, 143 transitions, 380 flow [2023-11-29 01:32:26,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=380, PETRI_PLACES=104, PETRI_TRANSITIONS=143} [2023-11-29 01:32:26,938 INFO L281 CegarLoopForPetriNet]: 105 programPoint places, -1 predicate places. [2023-11-29 01:32:26,938 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 143 transitions, 380 flow [2023-11-29 01:32:26,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:32:26,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:32:26,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:32:26,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:32:27,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:32:27,140 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 01:32:27,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:32:27,140 INFO L85 PathProgramCache]: Analyzing trace with hash 622448261, now seen corresponding path program 1 times [2023-11-29 01:32:27,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:32:27,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246246172] [2023-11-29 01:32:27,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:32:27,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:32:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:27,449 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 01:32:27,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:32:27,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246246172] [2023-11-29 01:32:27,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246246172] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:32:27,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673156981] [2023-11-29 01:32:27,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:32:27,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:32:27,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:32:27,453 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:32:27,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:32:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:28,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:32:28,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:32:28,056 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 01:32:28,056 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:32:28,088 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 01:32:28,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673156981] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:32:28,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:32:28,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-11-29 01:32:28,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888896861] [2023-11-29 01:32:28,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:32:28,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:32:28,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:32:28,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:32:28,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:32:28,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 141 [2023-11-29 01:32:28,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 143 transitions, 380 flow. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:32:28,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:32:28,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 141 [2023-11-29 01:32:28,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:32:50,276 INFO L124 PetriNetUnfolderBase]: 75661/99933 cut-off events. [2023-11-29 01:32:50,276 INFO L125 PetriNetUnfolderBase]: For 435/435 co-relation queries the response was YES. [2023-11-29 01:32:50,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198531 conditions, 99933 events. 75661/99933 cut-off events. For 435/435 co-relation queries the response was YES. Maximal size of possible extension queue 3951. Compared 613780 event pairs, 51697 based on Foata normal form. 18/75455 useless extension candidates. Maximal degree in co-relation 198424. Up to 97983 conditions per place. [2023-11-29 01:32:50,671 INFO L140 encePairwiseOnDemand]: 116/141 looper letters, 111 selfloop transitions, 48 changer transitions 0/167 dead transitions. [2023-11-29 01:32:50,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 167 transitions, 794 flow [2023-11-29 01:32:50,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:32:50,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 01:32:50,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 271 transitions. [2023-11-29 01:32:50,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2402482269503546 [2023-11-29 01:32:50,675 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 271 transitions. [2023-11-29 01:32:50,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 271 transitions. [2023-11-29 01:32:50,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:32:50,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 271 transitions. [2023-11-29 01:32:50,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.875) internal successors, (271), 8 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:32:50,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 141.0) internal successors, (1269), 9 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:32:50,682 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 141.0) internal successors, (1269), 9 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:32:50,682 INFO L175 Difference]: Start difference. First operand has 104 places, 143 transitions, 380 flow. Second operand 8 states and 271 transitions. [2023-11-29 01:32:50,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 167 transitions, 794 flow [2023-11-29 01:32:50,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 167 transitions, 782 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 01:32:50,687 INFO L231 Difference]: Finished difference. Result has 111 places, 167 transitions, 610 flow [2023-11-29 01:32:50,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=610, PETRI_PLACES=111, PETRI_TRANSITIONS=167} [2023-11-29 01:32:50,688 INFO L281 CegarLoopForPetriNet]: 105 programPoint places, 6 predicate places. [2023-11-29 01:32:50,688 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 167 transitions, 610 flow [2023-11-29 01:32:50,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:32:50,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:32:50,689 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:32:50,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:32:50,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:32:50,890 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 01:32:50,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:32:50,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1501349857, now seen corresponding path program 2 times [2023-11-29 01:32:50,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:32:50,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720407938] [2023-11-29 01:32:50,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:32:50,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:32:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:51,299 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-29 01:32:51,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:32:51,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720407938] [2023-11-29 01:32:51,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720407938] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:32:51,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475997074] [2023-11-29 01:32:51,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:32:51,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:32:51,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:32:51,301 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:32:51,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:32:51,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:32:51,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:32:51,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:32:51,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:32:51,981 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2023-11-29 01:32:51,982 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 34 treesize of output 19 [2023-11-29 01:32:52,031 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-29 01:32:52,031 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:32:52,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475997074] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:32:52,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:32:52,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-11-29 01:32:52,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224351973] [2023-11-29 01:32:52,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:32:52,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:32:52,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:32:52,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:32:52,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:32:52,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 141 [2023-11-29 01:32:52,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 167 transitions, 610 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:32:52,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:32:52,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 141 [2023-11-29 01:32:52,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:33:16,807 INFO L124 PetriNetUnfolderBase]: 83229/110358 cut-off events. [2023-11-29 01:33:16,807 INFO L125 PetriNetUnfolderBase]: For 318/318 co-relation queries the response was YES. [2023-11-29 01:33:16,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219545 conditions, 110358 events. 83229/110358 cut-off events. For 318/318 co-relation queries the response was YES. Maximal size of possible extension queue 4334. Compared 695279 event pairs, 51697 based on Foata normal form. 1/83733 useless extension candidates. Maximal degree in co-relation 219384. Up to 94139 conditions per place. [2023-11-29 01:33:17,206 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 151 selfloop transitions, 0 changer transitions 76/235 dead transitions. [2023-11-29 01:33:17,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 235 transitions, 1205 flow [2023-11-29 01:33:17,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:33:17,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 01:33:17,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2023-11-29 01:33:17,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2023-11-29 01:33:17,208 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 225 transitions. [2023-11-29 01:33:17,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 225 transitions. [2023-11-29 01:33:17,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:33:17,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 225 transitions. [2023-11-29 01:33:17,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:33:17,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:33:17,211 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:33:17,211 INFO L175 Difference]: Start difference. First operand has 111 places, 167 transitions, 610 flow. Second operand 3 states and 225 transitions. [2023-11-29 01:33:17,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 235 transitions, 1205 flow [2023-11-29 01:33:17,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 235 transitions, 1119 flow, removed 31 selfloop flow, removed 2 redundant places. [2023-11-29 01:33:17,218 INFO L231 Difference]: Finished difference. Result has 112 places, 159 transitions, 510 flow [2023-11-29 01:33:17,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=510, PETRI_PLACES=112, PETRI_TRANSITIONS=159} [2023-11-29 01:33:17,219 INFO L281 CegarLoopForPetriNet]: 105 programPoint places, 7 predicate places. [2023-11-29 01:33:17,220 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 159 transitions, 510 flow [2023-11-29 01:33:17,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:33:17,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:33:17,220 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:33:17,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 01:33:17,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:33:17,421 INFO L420 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)] === [2023-11-29 01:33:17,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:33:17,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1170369125, now seen corresponding path program 1 times [2023-11-29 01:33:17,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:33:17,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414259702] [2023-11-29 01:33:17,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:33:17,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:33:17,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:17,758 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-29 01:33:17,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:33:17,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414259702] [2023-11-29 01:33:17,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414259702] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:33:17,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412888909] [2023-11-29 01:33:17,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:33:17,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:33:17,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:33:17,760 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:33:17,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:33:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:18,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:33:18,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:33:18,544 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-29 01:33:18,544 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:33:18,621 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-29 01:33:18,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412888909] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:33:18,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:33:18,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2023-11-29 01:33:18,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295643886] [2023-11-29 01:33:18,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:33:18,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 01:33:18,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:33:18,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 01:33:18,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:33:18,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 141 [2023-11-29 01:33:18,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 159 transitions, 510 flow. Second operand has 15 states, 15 states have (on average 16.133333333333333) internal successors, (242), 15 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:33:18,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:33:18,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 141 [2023-11-29 01:33:18,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:33:37,514 INFO L124 PetriNetUnfolderBase]: 59717/79781 cut-off events. [2023-11-29 01:33:37,514 INFO L125 PetriNetUnfolderBase]: For 318/318 co-relation queries the response was YES. [2023-11-29 01:33:37,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158538 conditions, 79781 events. 59717/79781 cut-off events. For 318/318 co-relation queries the response was YES. Maximal size of possible extension queue 3171. Compared 492865 event pairs, 42449 based on Foata normal form. 11/62084 useless extension candidates. Maximal degree in co-relation 158531. Up to 78159 conditions per place. [2023-11-29 01:33:37,853 INFO L140 encePairwiseOnDemand]: 116/141 looper letters, 103 selfloop transitions, 66 changer transitions 0/177 dead transitions. [2023-11-29 01:33:37,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 177 transitions, 944 flow [2023-11-29 01:33:37,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:33:37,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 01:33:37,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 308 transitions. [2023-11-29 01:33:37,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.19858156028368795 [2023-11-29 01:33:37,856 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 308 transitions. [2023-11-29 01:33:37,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 308 transitions. [2023-11-29 01:33:37,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:33:37,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 308 transitions. [2023-11-29 01:33:37,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 28.0) internal successors, (308), 11 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:33:37,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 141.0) internal successors, (1692), 12 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:33:37,860 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 141.0) internal successors, (1692), 12 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:33:37,860 INFO L175 Difference]: Start difference. First operand has 112 places, 159 transitions, 510 flow. Second operand 11 states and 308 transitions. [2023-11-29 01:33:37,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 177 transitions, 944 flow [2023-11-29 01:33:37,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 177 transitions, 942 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-29 01:33:37,865 INFO L231 Difference]: Finished difference. Result has 119 places, 177 transitions, 800 flow [2023-11-29 01:33:37,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=800, PETRI_PLACES=119, PETRI_TRANSITIONS=177} [2023-11-29 01:33:37,865 INFO L281 CegarLoopForPetriNet]: 105 programPoint places, 14 predicate places. [2023-11-29 01:33:37,866 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 177 transitions, 800 flow [2023-11-29 01:33:37,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 16.133333333333333) internal successors, (242), 15 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:33:37,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:33:37,866 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:33:37,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:33:38,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:33:38,067 INFO L420 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)] === [2023-11-29 01:33:38,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:33:38,067 INFO L85 PathProgramCache]: Analyzing trace with hash -98006597, now seen corresponding path program 2 times [2023-11-29 01:33:38,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:33:38,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683288808] [2023-11-29 01:33:38,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:33:38,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:33:38,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:38,635 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-11-29 01:33:38,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:33:38,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683288808] [2023-11-29 01:33:38,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683288808] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:33:38,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518726097] [2023-11-29 01:33:38,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:33:38,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:33:38,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:33:38,637 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:33:38,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:33:39,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:33:39,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:33:39,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 01:33:39,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:33:39,511 INFO L349 Elim1Store]: treesize reduction 18, result has 51.4 percent of original size [2023-11-29 01:33:39,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 131 treesize of output 77 [2023-11-29 01:33:39,573 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-11-29 01:33:39,573 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:33:39,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518726097] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:33:39,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:33:39,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-11-29 01:33:39,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200574170] [2023-11-29 01:33:39,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:33:39,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:33:39,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:33:39,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:33:39,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:33:39,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 141 [2023-11-29 01:33:39,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 177 transitions, 800 flow. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:33:39,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:33:39,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 141 [2023-11-29 01:33:39,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:34:00,975 INFO L124 PetriNetUnfolderBase]: 65805/90006 cut-off events. [2023-11-29 01:34:00,975 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2023-11-29 01:34:01,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178536 conditions, 90006 events. 65805/90006 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 3512. Compared 599746 event pairs, 35513 based on Foata normal form. 2771/72745 useless extension candidates. Maximal degree in co-relation 178526. Up to 64315 conditions per place. [2023-11-29 01:34:01,390 INFO L140 encePairwiseOnDemand]: 127/141 looper letters, 234 selfloop transitions, 2 changer transitions 43/287 dead transitions. [2023-11-29 01:34:01,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 287 transitions, 1590 flow [2023-11-29 01:34:01,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:34:01,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 01:34:01,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 296 transitions. [2023-11-29 01:34:01,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4198581560283688 [2023-11-29 01:34:01,393 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 296 transitions. [2023-11-29 01:34:01,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 296 transitions. [2023-11-29 01:34:01,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:34:01,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 296 transitions. [2023-11-29 01:34:01,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 59.2) internal successors, (296), 5 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:34:01,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:34:01,396 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:34:01,396 INFO L175 Difference]: Start difference. First operand has 119 places, 177 transitions, 800 flow. Second operand 5 states and 296 transitions. [2023-11-29 01:34:01,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 287 transitions, 1590 flow [2023-11-29 01:34:01,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 287 transitions, 1446 flow, removed 30 selfloop flow, removed 5 redundant places. [2023-11-29 01:34:01,405 INFO L231 Difference]: Finished difference. Result has 121 places, 178 transitions, 701 flow [2023-11-29 01:34:01,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=701, PETRI_PLACES=121, PETRI_TRANSITIONS=178} [2023-11-29 01:34:01,406 INFO L281 CegarLoopForPetriNet]: 105 programPoint places, 16 predicate places. [2023-11-29 01:34:01,406 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 178 transitions, 701 flow [2023-11-29 01:34:01,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:34:01,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:34:01,407 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:34:01,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 01:34:01,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 01:34:01,607 INFO L420 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)] === [2023-11-29 01:34:01,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:34:01,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1101485447, now seen corresponding path program 3 times [2023-11-29 01:34:01,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:34:01,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526944806] [2023-11-29 01:34:01,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:34:01,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:34:01,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:02,019 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-11-29 01:34:02,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:34:02,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526944806] [2023-11-29 01:34:02,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526944806] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:34:02,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453803397] [2023-11-29 01:34:02,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:34:02,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:34:02,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:34:02,025 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:34:02,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:34:02,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 01:34:02,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:34:02,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 01:34:02,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:34:02,873 INFO L349 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2023-11-29 01:34:02,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 38 [2023-11-29 01:34:02,912 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-11-29 01:34:02,912 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:34:02,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453803397] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:34:02,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:34:02,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-11-29 01:34:02,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520134369] [2023-11-29 01:34:02,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:34:02,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:34:02,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:34:02,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:34:02,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:34:02,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 141 [2023-11-29 01:34:02,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 178 transitions, 701 flow. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:34:02,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:34:02,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 141 [2023-11-29 01:34:02,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:34:25,741 INFO L124 PetriNetUnfolderBase]: 70631/96505 cut-off events. [2023-11-29 01:34:25,741 INFO L125 PetriNetUnfolderBase]: For 12719/12719 co-relation queries the response was YES. [2023-11-29 01:34:26,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206683 conditions, 96505 events. 70631/96505 cut-off events. For 12719/12719 co-relation queries the response was YES. Maximal size of possible extension queue 3872. Compared 645722 event pairs, 48609 based on Foata normal form. 2/75281 useless extension candidates. Maximal degree in co-relation 206669. Up to 84305 conditions per place. [2023-11-29 01:34:26,251 INFO L140 encePairwiseOnDemand]: 130/141 looper letters, 239 selfloop transitions, 8 changer transitions 29/284 dead transitions. [2023-11-29 01:34:26,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 284 transitions, 1507 flow [2023-11-29 01:34:26,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:34:26,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 01:34:26,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 289 transitions. [2023-11-29 01:34:26,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3416075650118203 [2023-11-29 01:34:26,253 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 289 transitions. [2023-11-29 01:34:26,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 289 transitions. [2023-11-29 01:34:26,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:34:26,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 289 transitions. [2023-11-29 01:34:26,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 48.166666666666664) internal successors, (289), 6 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:34:26,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:34:26,256 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:34:26,256 INFO L175 Difference]: Start difference. First operand has 121 places, 178 transitions, 701 flow. Second operand 6 states and 289 transitions. [2023-11-29 01:34:26,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 284 transitions, 1507 flow [2023-11-29 01:34:26,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 284 transitions, 1498 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-29 01:34:26,866 INFO L231 Difference]: Finished difference. Result has 126 places, 180 transitions, 745 flow [2023-11-29 01:34:26,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=698, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=745, PETRI_PLACES=126, PETRI_TRANSITIONS=180} [2023-11-29 01:34:26,867 INFO L281 CegarLoopForPetriNet]: 105 programPoint places, 21 predicate places. [2023-11-29 01:34:26,867 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 180 transitions, 745 flow [2023-11-29 01:34:26,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:34:26,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:34:26,868 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:34:26,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:34:27,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:34:27,068 INFO L420 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)] === [2023-11-29 01:34:27,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:34:27,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1713503359, now seen corresponding path program 4 times [2023-11-29 01:34:27,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:34:27,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969823531] [2023-11-29 01:34:27,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:34:27,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:34:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:27,433 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-11-29 01:34:27,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:34:27,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969823531] [2023-11-29 01:34:27,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969823531] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:34:27,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108654326] [2023-11-29 01:34:27,434 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:34:27,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:34:27,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:34:27,435 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:34:27,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:34:28,207 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:34:28,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:34:28,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 1077 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 01:34:28,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:34:28,297 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-11-29 01:34:28,297 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:34:28,389 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-11-29 01:34:28,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108654326] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:34:28,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:34:28,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-11-29 01:34:28,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126669557] [2023-11-29 01:34:28,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:34:28,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 01:34:28,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:34:28,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 01:34:28,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=200, Unknown=0, NotChecked=0, Total=380 [2023-11-29 01:34:28,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 141 [2023-11-29 01:34:28,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 180 transitions, 745 flow. Second operand has 20 states, 20 states have (on average 14.5) internal successors, (290), 20 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:34:28,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 01:34:28,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 141 [2023-11-29 01:34:28,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 01:34:52,931 INFO L124 PetriNetUnfolderBase]: 70467/96302 cut-off events. [2023-11-29 01:34:52,931 INFO L125 PetriNetUnfolderBase]: For 25341/25341 co-relation queries the response was YES. [2023-11-29 01:34:53,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213105 conditions, 96302 events. 70467/96302 cut-off events. For 25341/25341 co-relation queries the response was YES. Maximal size of possible extension queue 3848. Compared 641169 event pairs, 54021 based on Foata normal form. 21/75093 useless extension candidates. Maximal degree in co-relation 213089. Up to 94589 conditions per place. [2023-11-29 01:34:53,497 INFO L140 encePairwiseOnDemand]: 117/141 looper letters, 106 selfloop transitions, 87 changer transitions 0/201 dead transitions. [2023-11-29 01:34:53,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 201 transitions, 1257 flow [2023-11-29 01:34:53,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:34:53,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 01:34:53,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 365 transitions. [2023-11-29 01:34:53,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.18490374873353596 [2023-11-29 01:34:53,501 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 365 transitions. [2023-11-29 01:34:53,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 365 transitions. [2023-11-29 01:34:53,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 01:34:53,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 365 transitions. [2023-11-29 01:34:53,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 26.071428571428573) internal successors, (365), 14 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:34:53,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 141.0) internal successors, (2115), 15 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:34:53,507 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 141.0) internal successors, (2115), 15 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:34:53,507 INFO L175 Difference]: Start difference. First operand has 126 places, 180 transitions, 745 flow. Second operand 14 states and 365 transitions. [2023-11-29 01:34:53,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 201 transitions, 1257 flow [2023-11-29 01:34:54,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 201 transitions, 1244 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-29 01:34:54,171 INFO L231 Difference]: Finished difference. Result has 136 places, 201 transitions, 1038 flow [2023-11-29 01:34:54,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1038, PETRI_PLACES=136, PETRI_TRANSITIONS=201} [2023-11-29 01:34:54,172 INFO L281 CegarLoopForPetriNet]: 105 programPoint places, 31 predicate places. [2023-11-29 01:34:54,172 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 201 transitions, 1038 flow [2023-11-29 01:34:54,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 14.5) internal successors, (290), 20 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:34:54,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 01:34:54,173 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 12, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:34:54,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 01:34:54,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:34:54,373 INFO L420 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)] === [2023-11-29 01:34:54,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:34:54,374 INFO L85 PathProgramCache]: Analyzing trace with hash -787516817, now seen corresponding path program 5 times [2023-11-29 01:34:54,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:34:54,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360117902] [2023-11-29 01:34:54,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:34:54,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:34:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:55,178 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2023-11-29 01:34:55,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:34:55,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360117902] [2023-11-29 01:34:55,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360117902] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:34:55,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445770058] [2023-11-29 01:34:55,179 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 01:34:55,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:34:55,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:34:55,181 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:34:55,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a861d98-70a7-4082-adfb-876bc5e6c659/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process