./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 287b872f435ea31dbbf77f267944e24b96122b5f745db0674c91555289f3b84c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 19:14:47,961 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 19:14:48,058 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-08 19:14:48,064 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 19:14:48,065 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 19:14:48,097 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 19:14:48,098 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 19:14:48,098 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 19:14:48,099 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 19:14:48,100 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 19:14:48,100 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 19:14:48,101 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 19:14:48,102 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 19:14:48,103 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 19:14:48,108 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 19:14:48,108 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 19:14:48,109 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 19:14:48,109 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 19:14:48,109 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 19:14:48,110 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 19:14:48,110 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 19:14:48,111 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 19:14:48,113 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 19:14:48,113 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 19:14:48,114 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 19:14:48,114 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 19:14:48,114 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 19:14:48,114 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 19:14:48,115 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 19:14:48,115 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 19:14:48,117 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 19:14:48,118 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 19:14:48,118 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 19:14:48,119 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 19:14:48,119 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:14:48,119 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 19:14:48,120 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 19:14:48,120 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 19:14:48,120 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 19:14:48,121 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 19:14:48,122 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 19:14:48,123 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 19:14:48,123 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 19:14:48,123 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 19:14:48,124 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_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 287b872f435ea31dbbf77f267944e24b96122b5f745db0674c91555289f3b84c [2024-11-08 19:14:48,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 19:14:48,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 19:14:48,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 19:14:48,487 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 19:14:48,488 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 19:14:48,489 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c Unable to find full path for "g++" [2024-11-08 19:14:50,855 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 19:14:51,104 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 19:14:51,105 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2024-11-08 19:14:51,117 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX/data/ea5f55f49/676a0d298df549e1b02ac710c33e8b04/FLAGa0f70daad [2024-11-08 19:14:51,136 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX/data/ea5f55f49/676a0d298df549e1b02ac710c33e8b04 [2024-11-08 19:14:51,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 19:14:51,141 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 19:14:51,143 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 19:14:51,143 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 19:14:51,151 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 19:14:51,152 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:14:51" (1/1) ... [2024-11-08 19:14:51,154 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36b1a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:14:51, skipping insertion in model container [2024-11-08 19:14:51,154 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:14:51" (1/1) ... [2024-11-08 19:14:51,184 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 19:14:51,456 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:14:51,468 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 19:14:51,495 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:14:51,519 INFO L204 MainTranslator]: Completed translation [2024-11-08 19:14:51,520 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:14:51 WrapperNode [2024-11-08 19:14:51,520 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 19:14:51,522 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 19:14:51,522 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 19:14:51,522 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 19:14:51,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:14:51" (1/1) ... [2024-11-08 19:14:51,542 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:14:51" (1/1) ... [2024-11-08 19:14:51,567 INFO L138 Inliner]: procedures = 19, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2024-11-08 19:14:51,567 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 19:14:51,568 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 19:14:51,568 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 19:14:51,569 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 19:14:51,584 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:14:51" (1/1) ... [2024-11-08 19:14:51,585 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:14:51" (1/1) ... [2024-11-08 19:14:51,587 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:14:51" (1/1) ... [2024-11-08 19:14:51,610 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 19:14:51,610 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:14:51" (1/1) ... [2024-11-08 19:14:51,610 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:14:51" (1/1) ... [2024-11-08 19:14:51,616 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:14:51" (1/1) ... [2024-11-08 19:14:51,625 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:14:51" (1/1) ... [2024-11-08 19:14:51,627 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:14:51" (1/1) ... [2024-11-08 19:14:51,628 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:14:51" (1/1) ... [2024-11-08 19:14:51,631 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 19:14:51,632 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 19:14:51,633 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 19:14:51,633 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 19:14:51,634 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:14:51" (1/1) ... [2024-11-08 19:14:51,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:14:51,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:14:51,673 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 19:14:51,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 19:14:51,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 19:14:51,718 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 19:14:51,718 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 19:14:51,718 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 19:14:51,719 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 19:14:51,719 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 19:14:51,719 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 19:14:51,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 19:14:51,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 19:14:51,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 19:14:51,721 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 19:14:51,836 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 19:14:51,839 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 19:14:52,146 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 19:14:52,146 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 19:14:52,360 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 19:14:52,360 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 19:14:52,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:14:52 BoogieIcfgContainer [2024-11-08 19:14:52,361 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 19:14:52,365 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 19:14:52,367 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 19:14:52,373 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 19:14:52,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 07:14:51" (1/3) ... [2024-11-08 19:14:52,375 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@438b8070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:14:52, skipping insertion in model container [2024-11-08 19:14:52,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:14:51" (2/3) ... [2024-11-08 19:14:52,377 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@438b8070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:14:52, skipping insertion in model container [2024-11-08 19:14:52,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:14:52" (3/3) ... [2024-11-08 19:14:52,379 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-4.wvr.c [2024-11-08 19:14:52,401 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 19:14:52,401 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-08 19:14:52,402 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 19:14:52,519 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-08 19:14:52,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 53 transitions, 127 flow [2024-11-08 19:14:52,617 INFO L124 PetriNetUnfolderBase]: 6/50 cut-off events. [2024-11-08 19:14:52,617 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-08 19:14:52,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 50 events. 6/50 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 139 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-11-08 19:14:52,623 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 53 transitions, 127 flow [2024-11-08 19:14:52,630 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 47 transitions, 106 flow [2024-11-08 19:14:52,642 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 19:14:52,650 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@13652da6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 19:14:52,651 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-08 19:14:52,674 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 19:14:52,678 INFO L124 PetriNetUnfolderBase]: 2/26 cut-off events. [2024-11-08 19:14:52,678 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-08 19:14:52,678 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:14:52,679 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:14:52,680 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-08 19:14:52,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:14:52,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1875322676, now seen corresponding path program 1 times [2024-11-08 19:14:52,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:14:52,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924130276] [2024-11-08 19:14:52,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:14:52,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:14:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:14:53,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:14:53,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:14:53,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924130276] [2024-11-08 19:14:53,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924130276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:14:53,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:14:53,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 19:14:53,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077771278] [2024-11-08 19:14:53,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:14:53,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:14:53,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:14:53,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:14:53,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:14:53,218 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2024-11-08 19:14:53,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 106 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) [2024-11-08 19:14:53,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:14:53,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2024-11-08 19:14:53,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:14:53,881 INFO L124 PetriNetUnfolderBase]: 1497/2561 cut-off events. [2024-11-08 19:14:53,881 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2024-11-08 19:14:53,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4717 conditions, 2561 events. 1497/2561 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 16865 event pairs, 366 based on Foata normal form. 0/1536 useless extension candidates. Maximal degree in co-relation 4513. Up to 1112 conditions per place. [2024-11-08 19:14:53,977 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 34 selfloop transitions, 9 changer transitions 0/64 dead transitions. [2024-11-08 19:14:53,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 64 transitions, 235 flow [2024-11-08 19:14:53,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:14:53,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 19:14:53,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-11-08 19:14:54,000 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7484276729559748 [2024-11-08 19:14:54,002 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 106 flow. Second operand 3 states and 119 transitions. [2024-11-08 19:14:54,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 64 transitions, 235 flow [2024-11-08 19:14:54,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 64 transitions, 225 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-08 19:14:54,022 INFO L231 Difference]: Finished difference. Result has 51 places, 53 transitions, 168 flow [2024-11-08 19:14:54,024 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=51, PETRI_TRANSITIONS=53} [2024-11-08 19:14:54,031 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2024-11-08 19:14:54,033 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 53 transitions, 168 flow [2024-11-08 19:14:54,033 INFO L472 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) [2024-11-08 19:14:54,033 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:14:54,033 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:14:54,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 19:14:54,034 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-08 19:14:54,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:14:54,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1875322675, now seen corresponding path program 1 times [2024-11-08 19:14:54,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:14:54,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963236653] [2024-11-08 19:14:54,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:14:54,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:14:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:14:54,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:14:54,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:14:54,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963236653] [2024-11-08 19:14:54,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963236653] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:14:54,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:14:54,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 19:14:54,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650240708] [2024-11-08 19:14:54,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:14:54,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:14:54,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:14:54,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:14:54,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:14:54,239 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2024-11-08 19:14:54,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 53 transitions, 168 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) [2024-11-08 19:14:54,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:14:54,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2024-11-08 19:14:54,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:14:54,892 INFO L124 PetriNetUnfolderBase]: 2425/4013 cut-off events. [2024-11-08 19:14:54,892 INFO L125 PetriNetUnfolderBase]: For 2303/2303 co-relation queries the response was YES. [2024-11-08 19:14:54,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9064 conditions, 4013 events. 2425/4013 cut-off events. For 2303/2303 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 24816 event pairs, 366 based on Foata normal form. 214/3449 useless extension candidates. Maximal degree in co-relation 6057. Up to 1903 conditions per place. [2024-11-08 19:14:54,939 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 42 selfloop transitions, 9 changer transitions 0/72 dead transitions. [2024-11-08 19:14:54,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 72 transitions, 333 flow [2024-11-08 19:14:54,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:14:54,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 19:14:54,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-11-08 19:14:54,945 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7484276729559748 [2024-11-08 19:14:54,945 INFO L175 Difference]: Start difference. First operand has 51 places, 53 transitions, 168 flow. Second operand 3 states and 119 transitions. [2024-11-08 19:14:54,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 72 transitions, 333 flow [2024-11-08 19:14:54,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 72 transitions, 311 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 19:14:54,972 INFO L231 Difference]: Finished difference. Result has 53 places, 59 transitions, 234 flow [2024-11-08 19:14:54,973 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=53, PETRI_TRANSITIONS=59} [2024-11-08 19:14:54,974 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2024-11-08 19:14:54,974 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 59 transitions, 234 flow [2024-11-08 19:14:54,975 INFO L472 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) [2024-11-08 19:14:54,975 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:14:54,975 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:14:54,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 19:14:54,976 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-08 19:14:54,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:14:54,978 INFO L85 PathProgramCache]: Analyzing trace with hash -307494732, now seen corresponding path program 1 times [2024-11-08 19:14:54,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:14:54,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476725594] [2024-11-08 19:14:54,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:14:54,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:14:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:14:55,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:14:55,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:14:55,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476725594] [2024-11-08 19:14:55,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476725594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:14:55,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:14:55,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:14:55,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328609109] [2024-11-08 19:14:55,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:14:55,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:14:55,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:14:55,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:14:55,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:14:55,168 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-11-08 19:14:55,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 59 transitions, 234 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) [2024-11-08 19:14:55,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:14:55,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-11-08 19:14:55,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:14:55,891 INFO L124 PetriNetUnfolderBase]: 2780/4449 cut-off events. [2024-11-08 19:14:55,891 INFO L125 PetriNetUnfolderBase]: For 3754/4718 co-relation queries the response was YES. [2024-11-08 19:14:55,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11704 conditions, 4449 events. 2780/4449 cut-off events. For 3754/4718 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 27805 event pairs, 747 based on Foata normal form. 4/3740 useless extension candidates. Maximal degree in co-relation 9664. Up to 1838 conditions per place. [2024-11-08 19:14:55,945 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 60 selfloop transitions, 3 changer transitions 0/82 dead transitions. [2024-11-08 19:14:55,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 82 transitions, 457 flow [2024-11-08 19:14:55,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:14:55,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 19:14:55,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2024-11-08 19:14:55,949 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7044025157232704 [2024-11-08 19:14:55,949 INFO L175 Difference]: Start difference. First operand has 53 places, 59 transitions, 234 flow. Second operand 3 states and 112 transitions. [2024-11-08 19:14:55,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 82 transitions, 457 flow [2024-11-08 19:14:55,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 82 transitions, 433 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 19:14:55,961 INFO L231 Difference]: Finished difference. Result has 55 places, 61 transitions, 238 flow [2024-11-08 19:14:55,961 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=55, PETRI_TRANSITIONS=61} [2024-11-08 19:14:55,963 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2024-11-08 19:14:55,965 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 61 transitions, 238 flow [2024-11-08 19:14:55,965 INFO L472 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) [2024-11-08 19:14:55,965 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:14:55,966 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:14:55,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 19:14:55,966 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-08 19:14:55,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:14:55,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1580700662, now seen corresponding path program 1 times [2024-11-08 19:14:55,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:14:55,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811662165] [2024-11-08 19:14:55,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:14:55,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:14:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:14:56,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:14:56,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:14:56,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811662165] [2024-11-08 19:14:56,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811662165] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:14:56,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920173157] [2024-11-08 19:14:56,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:14:56,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:14:56,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:14:56,146 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:14:56,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 19:14:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:14:56,257 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 19:14:56,265 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:14:56,404 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:14:56,404 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:14:56,488 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:14:56,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920173157] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:14:56,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:14:56,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-08 19:14:56,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583753009] [2024-11-08 19:14:56,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:14:56,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 19:14:56,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:14:56,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 19:14:56,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:14:56,518 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2024-11-08 19:14:56,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 61 transitions, 238 flow. Second operand has 7 states, 7 states have (on average 26.0) internal successors, (182), 7 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:14:56,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:14:56,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2024-11-08 19:14:56,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:14:57,847 INFO L124 PetriNetUnfolderBase]: 4693/8495 cut-off events. [2024-11-08 19:14:57,848 INFO L125 PetriNetUnfolderBase]: For 5320/5320 co-relation queries the response was YES. [2024-11-08 19:14:57,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20559 conditions, 8495 events. 4693/8495 cut-off events. For 5320/5320 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 60566 event pairs, 161 based on Foata normal form. 260/7409 useless extension candidates. Maximal degree in co-relation 18552. Up to 2053 conditions per place. [2024-11-08 19:14:57,931 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 86 selfloop transitions, 40 changer transitions 0/149 dead transitions. [2024-11-08 19:14:57,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 149 transitions, 813 flow [2024-11-08 19:14:57,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 19:14:57,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 19:14:57,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 290 transitions. [2024-11-08 19:14:57,934 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7816711590296496 [2024-11-08 19:14:57,934 INFO L175 Difference]: Start difference. First operand has 55 places, 61 transitions, 238 flow. Second operand 7 states and 290 transitions. [2024-11-08 19:14:57,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 149 transitions, 813 flow [2024-11-08 19:14:57,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 149 transitions, 807 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 19:14:57,946 INFO L231 Difference]: Finished difference. Result has 63 places, 97 transitions, 632 flow [2024-11-08 19:14:57,946 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=632, PETRI_PLACES=63, PETRI_TRANSITIONS=97} [2024-11-08 19:14:57,948 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 12 predicate places. [2024-11-08 19:14:57,948 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 97 transitions, 632 flow [2024-11-08 19:14:57,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.0) internal successors, (182), 7 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:14:57,949 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:14:57,949 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:14:57,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 19:14:58,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:14:58,151 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-08 19:14:58,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:14:58,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1374850112, now seen corresponding path program 1 times [2024-11-08 19:14:58,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:14:58,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776848938] [2024-11-08 19:14:58,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:14:58,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:14:58,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:14:58,278 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:14:58,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:14:58,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776848938] [2024-11-08 19:14:58,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776848938] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:14:58,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:14:58,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:14:58,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606347200] [2024-11-08 19:14:58,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:14:58,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:14:58,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:14:58,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:14:58,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:14:58,293 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-11-08 19:14:58,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 97 transitions, 632 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:14:58,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:14:58,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-11-08 19:14:58,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:15:00,057 INFO L124 PetriNetUnfolderBase]: 6056/9959 cut-off events. [2024-11-08 19:15:00,057 INFO L125 PetriNetUnfolderBase]: For 23777/23813 co-relation queries the response was YES. [2024-11-08 19:15:00,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31089 conditions, 9959 events. 6056/9959 cut-off events. For 23777/23813 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 69658 event pairs, 1599 based on Foata normal form. 0/8379 useless extension candidates. Maximal degree in co-relation 14761. Up to 4064 conditions per place. [2024-11-08 19:15:00,160 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 104 selfloop transitions, 3 changer transitions 0/128 dead transitions. [2024-11-08 19:15:00,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 128 transitions, 1069 flow [2024-11-08 19:15:00,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:15:00,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 19:15:00,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2024-11-08 19:15:00,162 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6918238993710691 [2024-11-08 19:15:00,163 INFO L175 Difference]: Start difference. First operand has 63 places, 97 transitions, 632 flow. Second operand 3 states and 110 transitions. [2024-11-08 19:15:00,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 128 transitions, 1069 flow [2024-11-08 19:15:00,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 128 transitions, 1057 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-08 19:15:00,214 INFO L231 Difference]: Finished difference. Result has 67 places, 94 transitions, 605 flow [2024-11-08 19:15:00,216 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=605, PETRI_PLACES=67, PETRI_TRANSITIONS=94} [2024-11-08 19:15:00,217 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 16 predicate places. [2024-11-08 19:15:00,219 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 94 transitions, 605 flow [2024-11-08 19:15:00,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:15:00,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:15:00,221 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:15:00,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 19:15:00,222 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-08 19:15:00,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:15:00,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1905187398, now seen corresponding path program 1 times [2024-11-08 19:15:00,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:15:00,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063698871] [2024-11-08 19:15:00,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:15:00,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:15:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:15:00,410 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 19:15:00,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:15:00,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063698871] [2024-11-08 19:15:00,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063698871] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:15:00,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715902633] [2024-11-08 19:15:00,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:15:00,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:15:00,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:15:00,414 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:15:00,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 19:15:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:15:00,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 19:15:00,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:15:00,655 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 19:15:00,655 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:15:00,790 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 19:15:00,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715902633] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:15:00,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:15:00,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2024-11-08 19:15:00,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886065065] [2024-11-08 19:15:00,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:15:00,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 19:15:00,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:15:00,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 19:15:00,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-08 19:15:00,811 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2024-11-08 19:15:00,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 94 transitions, 605 flow. Second operand has 9 states, 9 states have (on average 27.333333333333332) internal successors, (246), 9 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:15:00,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:15:00,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2024-11-08 19:15:00,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:15:03,123 INFO L124 PetriNetUnfolderBase]: 6721/13569 cut-off events. [2024-11-08 19:15:03,123 INFO L125 PetriNetUnfolderBase]: For 46285/46285 co-relation queries the response was YES. [2024-11-08 19:15:03,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39385 conditions, 13569 events. 6721/13569 cut-off events. For 46285/46285 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 115513 event pairs, 396 based on Foata normal form. 1649/13155 useless extension candidates. Maximal degree in co-relation 26791. Up to 3214 conditions per place. [2024-11-08 19:15:03,311 INFO L140 encePairwiseOnDemand]: 37/53 looper letters, 76 selfloop transitions, 50 changer transitions 0/151 dead transitions. [2024-11-08 19:15:03,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 151 transitions, 1188 flow [2024-11-08 19:15:03,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 19:15:03,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-08 19:15:03,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 281 transitions. [2024-11-08 19:15:03,314 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6627358490566038 [2024-11-08 19:15:03,314 INFO L175 Difference]: Start difference. First operand has 67 places, 94 transitions, 605 flow. Second operand 8 states and 281 transitions. [2024-11-08 19:15:03,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 151 transitions, 1188 flow [2024-11-08 19:15:03,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 151 transitions, 1182 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 19:15:03,411 INFO L231 Difference]: Finished difference. Result has 74 places, 114 transitions, 1050 flow [2024-11-08 19:15:03,411 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1050, PETRI_PLACES=74, PETRI_TRANSITIONS=114} [2024-11-08 19:15:03,412 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 23 predicate places. [2024-11-08 19:15:03,413 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 114 transitions, 1050 flow [2024-11-08 19:15:03,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.333333333333332) internal successors, (246), 9 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:15:03,413 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:15:03,414 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:15:03,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 19:15:03,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:15:03,616 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-08 19:15:03,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:15:03,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1150932110, now seen corresponding path program 1 times [2024-11-08 19:15:03,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:15:03,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814311430] [2024-11-08 19:15:03,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:15:03,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:15:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:15:03,900 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:15:03,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:15:03,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814311430] [2024-11-08 19:15:03,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814311430] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:15:03,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391040671] [2024-11-08 19:15:03,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:15:03,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:15:03,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:15:03,904 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:15:03,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 19:15:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:15:04,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 19:15:04,010 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:15:04,100 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:15:04,100 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:15:04,211 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:15:04,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391040671] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:15:04,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:15:04,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-08 19:15:04,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007880937] [2024-11-08 19:15:04,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:15:04,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 19:15:04,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:15:04,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 19:15:04,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-08 19:15:04,232 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2024-11-08 19:15:04,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 114 transitions, 1050 flow. Second operand has 11 states, 11 states have (on average 26.181818181818183) internal successors, (288), 11 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:15:04,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:15:04,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2024-11-08 19:15:04,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:15:09,808 INFO L124 PetriNetUnfolderBase]: 18596/39240 cut-off events. [2024-11-08 19:15:09,808 INFO L125 PetriNetUnfolderBase]: For 244666/244666 co-relation queries the response was YES. [2024-11-08 19:15:09,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122011 conditions, 39240 events. 18596/39240 cut-off events. For 244666/244666 co-relation queries the response was YES. Maximal size of possible extension queue 1151. Compared 388588 event pairs, 345 based on Foata normal form. 4048/36307 useless extension candidates. Maximal degree in co-relation 111608. Up to 5214 conditions per place. [2024-11-08 19:15:10,340 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 182 selfloop transitions, 162 changer transitions 0/369 dead transitions. [2024-11-08 19:15:10,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 369 transitions, 3898 flow [2024-11-08 19:15:10,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 19:15:10,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-08 19:15:10,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 451 transitions. [2024-11-08 19:15:10,343 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7735849056603774 [2024-11-08 19:15:10,343 INFO L175 Difference]: Start difference. First operand has 74 places, 114 transitions, 1050 flow. Second operand 11 states and 451 transitions. [2024-11-08 19:15:10,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 369 transitions, 3898 flow [2024-11-08 19:15:11,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 369 transitions, 3707 flow, removed 93 selfloop flow, removed 3 redundant places. [2024-11-08 19:15:11,288 INFO L231 Difference]: Finished difference. Result has 89 places, 252 transitions, 3352 flow [2024-11-08 19:15:11,289 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=989, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3352, PETRI_PLACES=89, PETRI_TRANSITIONS=252} [2024-11-08 19:15:11,290 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 38 predicate places. [2024-11-08 19:15:11,290 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 252 transitions, 3352 flow [2024-11-08 19:15:11,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 26.181818181818183) internal successors, (288), 11 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:15:11,291 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:15:11,291 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:15:11,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 19:15:11,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:15:11,493 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-08 19:15:11,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:15:11,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1126158041, now seen corresponding path program 1 times [2024-11-08 19:15:11,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:15:11,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699845535] [2024-11-08 19:15:11,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:15:11,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:15:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:15:11,613 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 19:15:11,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:15:11,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699845535] [2024-11-08 19:15:11,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699845535] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:15:11,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638706060] [2024-11-08 19:15:11,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:15:11,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:15:11,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:15:11,620 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:15:11,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 19:15:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:15:11,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 19:15:11,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:15:11,769 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:15:11,769 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:15:11,842 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 19:15:11,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638706060] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:15:11,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:15:11,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 6 [2024-11-08 19:15:11,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931702342] [2024-11-08 19:15:11,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:15:11,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 19:15:11,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:15:11,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 19:15:11,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:15:11,861 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2024-11-08 19:15:11,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 252 transitions, 3352 flow. Second operand has 7 states, 7 states have (on average 27.142857142857142) internal successors, (190), 7 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:15:11,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:15:11,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2024-11-08 19:15:11,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 19:15:30,026 INFO L124 PetriNetUnfolderBase]: 48872/101586 cut-off events. [2024-11-08 19:15:30,026 INFO L125 PetriNetUnfolderBase]: For 820372/820372 co-relation queries the response was YES. [2024-11-08 19:15:30,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370132 conditions, 101586 events. 48872/101586 cut-off events. For 820372/820372 co-relation queries the response was YES. Maximal size of possible extension queue 2795. Compared 1135688 event pairs, 1189 based on Foata normal form. 3568/86815 useless extension candidates. Maximal degree in co-relation 344330. Up to 20205 conditions per place. [2024-11-08 19:15:31,718 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 413 selfloop transitions, 320 changer transitions 0/758 dead transitions. [2024-11-08 19:15:31,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 758 transitions, 11795 flow [2024-11-08 19:15:31,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 19:15:31,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 19:15:31,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 278 transitions. [2024-11-08 19:15:31,721 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7493261455525606 [2024-11-08 19:15:31,722 INFO L175 Difference]: Start difference. First operand has 89 places, 252 transitions, 3352 flow. Second operand 7 states and 278 transitions. [2024-11-08 19:15:31,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 758 transitions, 11795 flow [2024-11-08 19:15:43,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 758 transitions, 11264 flow, removed 263 selfloop flow, removed 1 redundant places. [2024-11-08 19:15:43,558 INFO L231 Difference]: Finished difference. Result has 98 places, 547 transitions, 9423 flow [2024-11-08 19:15:43,559 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3203, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9423, PETRI_PLACES=98, PETRI_TRANSITIONS=547} [2024-11-08 19:15:43,560 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 47 predicate places. [2024-11-08 19:15:43,560 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 547 transitions, 9423 flow [2024-11-08 19:15:43,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.142857142857142) internal successors, (190), 7 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:15:43,560 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 19:15:43,560 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:15:43,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 19:15:43,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-08 19:15:43,762 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-08 19:15:43,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:15:43,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1213959317, now seen corresponding path program 1 times [2024-11-08 19:15:43,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:15:43,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522357914] [2024-11-08 19:15:43,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:15:43,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:15:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:15:44,010 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 39 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 19:15:44,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:15:44,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522357914] [2024-11-08 19:15:44,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522357914] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:15:44,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82964650] [2024-11-08 19:15:44,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:15:44,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:15:44,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:15:44,015 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:15:44,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62226d8c-b91a-4226-ac9c-d75eb966c286/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 19:15:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:15:44,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-08 19:15:44,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:15:44,205 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:15:44,206 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:15:44,341 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 39 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 19:15:44,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82964650] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:15:44,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:15:44,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 10 [2024-11-08 19:15:44,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352811326] [2024-11-08 19:15:44,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:15:44,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 19:15:44,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:15:44,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 19:15:44,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=56, Unknown=0, NotChecked=0, Total=110 [2024-11-08 19:15:44,358 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2024-11-08 19:15:44,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 547 transitions, 9423 flow. Second operand has 11 states, 11 states have (on average 25.818181818181817) internal successors, (284), 11 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:15:44,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 19:15:44,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2024-11-08 19:15:44,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand