./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/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_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/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_69ec14af-6606-4320-8335-8b28895ef772/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 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:34:43,793 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:34:43,886 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-08 16:34:43,892 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:34:43,895 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:34:43,930 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:34:43,931 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:34:43,932 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:34:43,932 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:34:43,933 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:34:43,933 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:34:43,934 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:34:43,934 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:34:43,935 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:34:43,935 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:34:43,936 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:34:43,936 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:34:43,937 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:34:43,937 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:34:43,937 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:34:43,938 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:34:43,942 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:34:43,942 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:34:43,942 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:34:43,943 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:34:43,943 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 16:34:43,944 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 16:34:43,944 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:34:43,944 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:34:43,944 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:34:43,945 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:34:43,945 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:34:43,945 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:34:43,945 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:34:43,946 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:34:43,946 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:34:43,946 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:34:43,947 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:34:43,947 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:34:43,947 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:34:43,947 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:34:43,948 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:34:43,948 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:34:43,948 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:34:43,949 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_69ec14af-6606-4320-8335-8b28895ef772/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac [2024-11-08 16:34:44,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:34:44,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:34:44,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:34:44,254 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:34:44,255 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:34:44,256 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c Unable to find full path for "g++" [2024-11-08 16:34:46,735 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:34:47,028 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:34:47,029 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-11-08 16:34:47,046 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/data/98335e40a/de35c2dcceb44547b34e0d60bd3935fb/FLAG41ecba9e6 [2024-11-08 16:34:47,318 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/data/98335e40a/de35c2dcceb44547b34e0d60bd3935fb [2024-11-08 16:34:47,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:34:47,323 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:34:47,325 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:34:47,325 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:34:47,335 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:34:47,336 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:34:47" (1/1) ... [2024-11-08 16:34:47,337 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@759f5671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:34:47, skipping insertion in model container [2024-11-08 16:34:47,337 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:34:47" (1/1) ... [2024-11-08 16:34:47,384 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:34:47,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:34:47,776 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:34:47,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:34:47,873 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:34:47,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:34:47 WrapperNode [2024-11-08 16:34:47,874 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:34:47,876 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:34:47,876 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:34:47,876 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:34:47,886 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:34:47" (1/1) ... [2024-11-08 16:34:47,901 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:34:47" (1/1) ... [2024-11-08 16:34:47,965 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 269 [2024-11-08 16:34:47,970 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:34:47,971 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:34:47,971 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:34:47,971 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:34:47,986 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:34:47" (1/1) ... [2024-11-08 16:34:47,987 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:34:47" (1/1) ... [2024-11-08 16:34:47,992 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:34:47" (1/1) ... [2024-11-08 16:34:48,014 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-08 16:34:48,015 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:34:47" (1/1) ... [2024-11-08 16:34:48,015 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:34:47" (1/1) ... [2024-11-08 16:34:48,032 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:34:47" (1/1) ... [2024-11-08 16:34:48,045 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:34:47" (1/1) ... [2024-11-08 16:34:48,048 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:34:47" (1/1) ... [2024-11-08 16:34:48,054 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:34:47" (1/1) ... [2024-11-08 16:34:48,062 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:34:48,063 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:34:48,064 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:34:48,064 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:34:48,065 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:34:47" (1/1) ... [2024-11-08 16:34:48,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:34:48,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:34:48,106 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:34:48,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:34:48,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:34:48,138 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 16:34:48,138 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 16:34:48,138 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 16:34:48,139 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 16:34:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 16:34:48,139 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 16:34:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:34:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 16:34:48,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 16:34:48,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 16:34:48,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 16:34:48,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 16:34:48,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 16:34:48,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:34:48,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:34:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 16:34:48,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 16:34:48,143 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 16:34:48,296 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:34:48,299 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:34:48,945 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 16:34:48,945 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:34:49,544 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:34:49,546 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-08 16:34:49,547 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:34:49 BoogieIcfgContainer [2024-11-08 16:34:49,547 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:34:49,552 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:34:49,552 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:34:49,559 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:34:49,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:34:47" (1/3) ... [2024-11-08 16:34:49,560 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@549572d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:34:49, skipping insertion in model container [2024-11-08 16:34:49,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:34:47" (2/3) ... [2024-11-08 16:34:49,562 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@549572d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:34:49, skipping insertion in model container [2024-11-08 16:34:49,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:34:49" (3/3) ... [2024-11-08 16:34:49,564 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2024-11-08 16:34:49,590 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:34:49,590 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2024-11-08 16:34:49,591 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 16:34:49,698 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-08 16:34:49,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 79 transitions, 179 flow [2024-11-08 16:34:49,823 INFO L124 PetriNetUnfolderBase]: 10/76 cut-off events. [2024-11-08 16:34:49,824 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-08 16:34:49,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 10/76 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 235 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 61. Up to 2 conditions per place. [2024-11-08 16:34:49,832 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 79 transitions, 179 flow [2024-11-08 16:34:49,837 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 74 transitions, 163 flow [2024-11-08 16:34:49,856 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:34:49,866 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;@4638cd25, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:34:49,866 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-11-08 16:34:49,872 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 16:34:49,873 INFO L124 PetriNetUnfolderBase]: 2/9 cut-off events. [2024-11-08 16:34:49,874 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 16:34:49,874 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:34:49,875 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 16:34:49,875 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-08 16:34:49,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:34:49,882 INFO L85 PathProgramCache]: Analyzing trace with hash 24933774, now seen corresponding path program 1 times [2024-11-08 16:34:49,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:34:49,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167204595] [2024-11-08 16:34:49,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:34:49,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:34:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:34:50,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:34:50,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:34:50,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167204595] [2024-11-08 16:34:50,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167204595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:34:50,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:34:50,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:34:50,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452039579] [2024-11-08 16:34:50,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:34:50,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:34:50,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:34:50,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:34:50,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:34:50,466 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 79 [2024-11-08 16:34:50,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 74 transitions, 163 flow. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:34:50,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:34:50,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 79 [2024-11-08 16:34:50,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:34:51,368 INFO L124 PetriNetUnfolderBase]: 2182/3917 cut-off events. [2024-11-08 16:34:51,368 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-11-08 16:34:51,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7137 conditions, 3917 events. 2182/3917 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 28471 event pairs, 1926 based on Foata normal form. 257/3063 useless extension candidates. Maximal degree in co-relation 6766. Up to 3008 conditions per place. [2024-11-08 16:34:51,411 INFO L140 encePairwiseOnDemand]: 64/79 looper letters, 31 selfloop transitions, 6 changer transitions 0/65 dead transitions. [2024-11-08 16:34:51,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 65 transitions, 219 flow [2024-11-08 16:34:51,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:34:51,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:34:51,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 170 transitions. [2024-11-08 16:34:51,428 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5379746835443038 [2024-11-08 16:34:51,430 INFO L175 Difference]: Start difference. First operand has 74 places, 74 transitions, 163 flow. Second operand 4 states and 170 transitions. [2024-11-08 16:34:51,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 65 transitions, 219 flow [2024-11-08 16:34:51,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 65 transitions, 210 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-08 16:34:51,442 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 148 flow [2024-11-08 16:34:51,445 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=65, PETRI_TRANSITIONS=65} [2024-11-08 16:34:51,451 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, -9 predicate places. [2024-11-08 16:34:51,451 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 148 flow [2024-11-08 16:34:51,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:34:51,452 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:34:51,452 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-08 16:34:51,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:34:51,452 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-08 16:34:51,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:34:51,456 INFO L85 PathProgramCache]: Analyzing trace with hash 772947800, now seen corresponding path program 1 times [2024-11-08 16:34:51,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:34:51,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235605172] [2024-11-08 16:34:51,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:34:51,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:34:51,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:34:51,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:34:51,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:34:51,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235605172] [2024-11-08 16:34:51,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235605172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:34:51,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:34:51,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:34:51,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032817083] [2024-11-08 16:34:51,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:34:51,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:34:51,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:34:51,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:34:51,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:34:51,609 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 79 [2024-11-08 16:34:51,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 65 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:34:51,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:34:51,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 79 [2024-11-08 16:34:51,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:34:52,315 INFO L124 PetriNetUnfolderBase]: 2186/3931 cut-off events. [2024-11-08 16:34:52,316 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-11-08 16:34:52,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7103 conditions, 3931 events. 2186/3931 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 28599 event pairs, 1926 based on Foata normal form. 2/2822 useless extension candidates. Maximal degree in co-relation 7043. Up to 3017 conditions per place. [2024-11-08 16:34:52,353 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 36 selfloop transitions, 7 changer transitions 0/71 dead transitions. [2024-11-08 16:34:52,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 71 transitions, 256 flow [2024-11-08 16:34:52,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:34:52,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:34:52,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 169 transitions. [2024-11-08 16:34:52,358 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5348101265822784 [2024-11-08 16:34:52,359 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 148 flow. Second operand 4 states and 169 transitions. [2024-11-08 16:34:52,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 71 transitions, 256 flow [2024-11-08 16:34:52,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 71 transitions, 234 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 16:34:52,363 INFO L231 Difference]: Finished difference. Result has 68 places, 71 transitions, 192 flow [2024-11-08 16:34:52,364 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=68, PETRI_TRANSITIONS=71} [2024-11-08 16:34:52,365 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, -6 predicate places. [2024-11-08 16:34:52,365 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 71 transitions, 192 flow [2024-11-08 16:34:52,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:34:52,366 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:34:52,366 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-08 16:34:52,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:34:52,367 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-08 16:34:52,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:34:52,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1395569798, now seen corresponding path program 1 times [2024-11-08 16:34:52,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:34:52,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256302202] [2024-11-08 16:34:52,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:34:52,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:34:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:34:52,553 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 16:34:52,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:34:52,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256302202] [2024-11-08 16:34:52,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256302202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:34:52,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658212371] [2024-11-08 16:34:52,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:34:52,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:34:52,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:34:52,561 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:34:52,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:34:52,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:34:52,720 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 16:34:52,725 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:34:52,794 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 16:34:52,795 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:34:52,882 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 16:34:52,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658212371] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:34:52,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:34:52,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-08 16:34:52,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419942308] [2024-11-08 16:34:52,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:34:52,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 16:34:52,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:34:52,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 16:34:52,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-08 16:34:53,014 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 79 [2024-11-08 16:34:53,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 71 transitions, 192 flow. Second operand has 10 states, 10 states have (on average 32.0) internal successors, (320), 10 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:34:53,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:34:53,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 79 [2024-11-08 16:34:53,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:34:53,853 INFO L124 PetriNetUnfolderBase]: 2198/3973 cut-off events. [2024-11-08 16:34:53,853 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2024-11-08 16:34:53,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7197 conditions, 3973 events. 2198/3973 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 29027 event pairs, 1926 based on Foata normal form. 0/2854 useless extension candidates. Maximal degree in co-relation 7060. Up to 3020 conditions per place. [2024-11-08 16:34:53,899 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 36 selfloop transitions, 25 changer transitions 0/89 dead transitions. [2024-11-08 16:34:53,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 89 transitions, 392 flow [2024-11-08 16:34:53,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 16:34:53,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 16:34:53,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 377 transitions. [2024-11-08 16:34:53,905 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4772151898734177 [2024-11-08 16:34:53,906 INFO L175 Difference]: Start difference. First operand has 68 places, 71 transitions, 192 flow. Second operand 10 states and 377 transitions. [2024-11-08 16:34:53,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 89 transitions, 392 flow [2024-11-08 16:34:53,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 89 transitions, 392 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 16:34:53,915 INFO L231 Difference]: Finished difference. Result has 80 places, 89 transitions, 354 flow [2024-11-08 16:34:53,915 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=354, PETRI_PLACES=80, PETRI_TRANSITIONS=89} [2024-11-08 16:34:53,916 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 6 predicate places. [2024-11-08 16:34:53,917 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 89 transitions, 354 flow [2024-11-08 16:34:53,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 32.0) internal successors, (320), 10 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:34:53,918 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:34:53,919 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:34:53,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 16:34:54,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:34:54,120 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-08 16:34:54,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:34:54,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1722218317, now seen corresponding path program 1 times [2024-11-08 16:34:54,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:34:54,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969486024] [2024-11-08 16:34:54,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:34:54,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:34:54,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:34:54,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:34:54,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:34:54,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969486024] [2024-11-08 16:34:54,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969486024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:34:54,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:34:54,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:34:54,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703031909] [2024-11-08 16:34:54,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:34:54,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:34:54,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:34:54,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:34:54,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:34:54,409 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 79 [2024-11-08 16:34:54,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 89 transitions, 354 flow. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:34:54,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:34:54,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 79 [2024-11-08 16:34:54,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:34:55,238 INFO L124 PetriNetUnfolderBase]: 2296/4100 cut-off events. [2024-11-08 16:34:55,239 INFO L125 PetriNetUnfolderBase]: For 165/165 co-relation queries the response was YES. [2024-11-08 16:34:55,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7626 conditions, 4100 events. 2296/4100 cut-off events. For 165/165 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 28662 event pairs, 2001 based on Foata normal form. 80/3184 useless extension candidates. Maximal degree in co-relation 7510. Up to 3062 conditions per place. [2024-11-08 16:34:55,283 INFO L140 encePairwiseOnDemand]: 66/79 looper letters, 90 selfloop transitions, 15 changer transitions 0/129 dead transitions. [2024-11-08 16:34:55,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 129 transitions, 736 flow [2024-11-08 16:34:55,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:34:55,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 16:34:55,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 220 transitions. [2024-11-08 16:34:55,285 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5569620253164557 [2024-11-08 16:34:55,285 INFO L175 Difference]: Start difference. First operand has 80 places, 89 transitions, 354 flow. Second operand 5 states and 220 transitions. [2024-11-08 16:34:55,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 129 transitions, 736 flow [2024-11-08 16:34:55,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 129 transitions, 634 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-11-08 16:34:55,293 INFO L231 Difference]: Finished difference. Result has 83 places, 102 transitions, 440 flow [2024-11-08 16:34:55,293 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=440, PETRI_PLACES=83, PETRI_TRANSITIONS=102} [2024-11-08 16:34:55,294 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 9 predicate places. [2024-11-08 16:34:55,294 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 102 transitions, 440 flow [2024-11-08 16:34:55,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:34:55,294 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:34:55,295 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:34:55,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 16:34:55,295 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-08 16:34:55,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:34:55,296 INFO L85 PathProgramCache]: Analyzing trace with hash -2045954251, now seen corresponding path program 1 times [2024-11-08 16:34:55,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:34:55,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171384800] [2024-11-08 16:34:55,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:34:55,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:34:55,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:34:55,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:34:55,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:34:55,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171384800] [2024-11-08 16:34:55,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171384800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:34:55,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:34:55,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 16:34:55,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386934657] [2024-11-08 16:34:55,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:34:55,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:34:55,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:34:55,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:34:55,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:34:55,422 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 79 [2024-11-08 16:34:55,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 102 transitions, 440 flow. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:34:55,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:34:55,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 79 [2024-11-08 16:34:55,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:34:56,323 INFO L124 PetriNetUnfolderBase]: 2264/4126 cut-off events. [2024-11-08 16:34:56,323 INFO L125 PetriNetUnfolderBase]: For 612/612 co-relation queries the response was YES. [2024-11-08 16:34:56,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8482 conditions, 4126 events. 2264/4126 cut-off events. For 612/612 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 28521 event pairs, 801 based on Foata normal form. 65/3181 useless extension candidates. Maximal degree in co-relation 8371. Up to 2372 conditions per place. [2024-11-08 16:34:56,380 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 79 selfloop transitions, 2 changer transitions 5/119 dead transitions. [2024-11-08 16:34:56,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 119 transitions, 661 flow [2024-11-08 16:34:56,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:34:56,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:34:56,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 159 transitions. [2024-11-08 16:34:56,383 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6708860759493671 [2024-11-08 16:34:56,384 INFO L175 Difference]: Start difference. First operand has 83 places, 102 transitions, 440 flow. Second operand 3 states and 159 transitions. [2024-11-08 16:34:56,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 119 transitions, 661 flow [2024-11-08 16:34:56,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 119 transitions, 659 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:34:56,394 INFO L231 Difference]: Finished difference. Result has 85 places, 98 transitions, 411 flow [2024-11-08 16:34:56,395 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=411, PETRI_PLACES=85, PETRI_TRANSITIONS=98} [2024-11-08 16:34:56,396 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 11 predicate places. [2024-11-08 16:34:56,396 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 98 transitions, 411 flow [2024-11-08 16:34:56,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:34:56,398 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:34:56,399 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:34:56,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 16:34:56,399 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-08 16:34:56,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:34:56,400 INFO L85 PathProgramCache]: Analyzing trace with hash 143298271, now seen corresponding path program 1 times [2024-11-08 16:34:56,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:34:56,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465509683] [2024-11-08 16:34:56,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:34:56,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:34:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:34:56,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:34:56,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:34:56,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465509683] [2024-11-08 16:34:56,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465509683] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:34:56,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259914797] [2024-11-08 16:34:56,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:34:56,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:34:56,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:34:56,592 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:34:56,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 16:34:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:34:56,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 16:34:56,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:34:56,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:34:56,761 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:34:56,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259914797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:34:56,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:34:56,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-08 16:34:56,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213657770] [2024-11-08 16:34:56,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:34:56,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:34:56,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:34:56,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:34:56,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:34:56,765 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 79 [2024-11-08 16:34:56,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 98 transitions, 411 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:34:56,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:34:56,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 79 [2024-11-08 16:34:56,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:34:57,371 INFO L124 PetriNetUnfolderBase]: 1448/2734 cut-off events. [2024-11-08 16:34:57,372 INFO L125 PetriNetUnfolderBase]: For 624/638 co-relation queries the response was YES. [2024-11-08 16:34:57,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5673 conditions, 2734 events. 1448/2734 cut-off events. For 624/638 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 17270 event pairs, 1174 based on Foata normal form. 0/2414 useless extension candidates. Maximal degree in co-relation 5566. Up to 2053 conditions per place. [2024-11-08 16:34:57,393 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 61 selfloop transitions, 1 changer transitions 0/95 dead transitions. [2024-11-08 16:34:57,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 95 transitions, 523 flow [2024-11-08 16:34:57,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:34:57,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:34:57,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2024-11-08 16:34:57,395 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5907172995780591 [2024-11-08 16:34:57,395 INFO L175 Difference]: Start difference. First operand has 85 places, 98 transitions, 411 flow. Second operand 3 states and 140 transitions. [2024-11-08 16:34:57,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 95 transitions, 523 flow [2024-11-08 16:34:57,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 95 transitions, 521 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:34:57,402 INFO L231 Difference]: Finished difference. Result has 83 places, 95 transitions, 399 flow [2024-11-08 16:34:57,403 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=399, PETRI_PLACES=83, PETRI_TRANSITIONS=95} [2024-11-08 16:34:57,404 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 9 predicate places. [2024-11-08 16:34:57,404 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 95 transitions, 399 flow [2024-11-08 16:34:57,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:34:57,404 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:34:57,404 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:34:57,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 16:34:57,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:34:57,611 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-08 16:34:57,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:34:57,612 INFO L85 PathProgramCache]: Analyzing trace with hash -313418458, now seen corresponding path program 1 times [2024-11-08 16:34:57,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:34:57,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849595455] [2024-11-08 16:34:57,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:34:57,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:34:57,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:34:57,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:34:57,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:34:57,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849595455] [2024-11-08 16:34:57,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849595455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:34:57,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:34:57,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:34:57,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083869173] [2024-11-08 16:34:57,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:34:57,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:34:57,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:34:57,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:34:57,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:34:57,725 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 79 [2024-11-08 16:34:57,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 95 transitions, 399 flow. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:34:57,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:34:57,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 79 [2024-11-08 16:34:57,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:34:58,087 INFO L124 PetriNetUnfolderBase]: 1301/2491 cut-off events. [2024-11-08 16:34:58,087 INFO L125 PetriNetUnfolderBase]: For 578/578 co-relation queries the response was YES. [2024-11-08 16:34:58,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5128 conditions, 2491 events. 1301/2491 cut-off events. For 578/578 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 14710 event pairs, 514 based on Foata normal form. 10/2215 useless extension candidates. Maximal degree in co-relation 5109. Up to 1675 conditions per place. [2024-11-08 16:34:58,108 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 68 selfloop transitions, 3 changer transitions 0/104 dead transitions. [2024-11-08 16:34:58,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 104 transitions, 566 flow [2024-11-08 16:34:58,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:34:58,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:34:58,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2024-11-08 16:34:58,110 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.620253164556962 [2024-11-08 16:34:58,111 INFO L175 Difference]: Start difference. First operand has 83 places, 95 transitions, 399 flow. Second operand 3 states and 147 transitions. [2024-11-08 16:34:58,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 104 transitions, 566 flow [2024-11-08 16:34:58,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 104 transitions, 565 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:34:58,116 INFO L231 Difference]: Finished difference. Result has 85 places, 97 transitions, 421 flow [2024-11-08 16:34:58,116 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=421, PETRI_PLACES=85, PETRI_TRANSITIONS=97} [2024-11-08 16:34:58,117 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 11 predicate places. [2024-11-08 16:34:58,118 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 97 transitions, 421 flow [2024-11-08 16:34:58,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:34:58,119 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:34:58,119 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:34:58,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 16:34:58,119 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-08 16:34:58,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:34:58,120 INFO L85 PathProgramCache]: Analyzing trace with hash 271698563, now seen corresponding path program 1 times [2024-11-08 16:34:58,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:34:58,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845967122] [2024-11-08 16:34:58,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:34:58,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:34:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:34:58,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:34:58,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:34:58,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845967122] [2024-11-08 16:34:58,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845967122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:34:58,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:34:58,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:34:58,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098597168] [2024-11-08 16:34:58,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:34:58,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:34:58,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:34:58,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:34:58,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:34:58,249 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 79 [2024-11-08 16:34:58,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 97 transitions, 421 flow. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:34:58,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:34:58,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 79 [2024-11-08 16:34:58,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:34:59,047 INFO L124 PetriNetUnfolderBase]: 2443/4479 cut-off events. [2024-11-08 16:34:59,048 INFO L125 PetriNetUnfolderBase]: For 1616/1616 co-relation queries the response was YES. [2024-11-08 16:34:59,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9577 conditions, 4479 events. 2443/4479 cut-off events. For 1616/1616 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 28662 event pairs, 1556 based on Foata normal form. 96/4028 useless extension candidates. Maximal degree in co-relation 9556. Up to 2830 conditions per place. [2024-11-08 16:34:59,096 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 100 selfloop transitions, 4 changer transitions 0/134 dead transitions. [2024-11-08 16:34:59,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 134 transitions, 733 flow [2024-11-08 16:34:59,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:34:59,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:34:59,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 201 transitions. [2024-11-08 16:34:59,098 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6360759493670886 [2024-11-08 16:34:59,099 INFO L175 Difference]: Start difference. First operand has 85 places, 97 transitions, 421 flow. Second operand 4 states and 201 transitions. [2024-11-08 16:34:59,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 134 transitions, 733 flow [2024-11-08 16:34:59,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 134 transitions, 720 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-08 16:34:59,105 INFO L231 Difference]: Finished difference. Result has 89 places, 100 transitions, 441 flow [2024-11-08 16:34:59,106 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=441, PETRI_PLACES=89, PETRI_TRANSITIONS=100} [2024-11-08 16:34:59,108 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 15 predicate places. [2024-11-08 16:34:59,109 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 100 transitions, 441 flow [2024-11-08 16:34:59,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:34:59,109 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:34:59,110 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:34:59,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 16:34:59,110 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-08 16:34:59,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:34:59,111 INFO L85 PathProgramCache]: Analyzing trace with hash -2000391168, now seen corresponding path program 1 times [2024-11-08 16:34:59,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:34:59,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838928672] [2024-11-08 16:34:59,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:34:59,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:34:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:34:59,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:34:59,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:34:59,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838928672] [2024-11-08 16:34:59,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838928672] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:34:59,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:34:59,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:34:59,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486463026] [2024-11-08 16:34:59,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:34:59,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:34:59,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:34:59,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:34:59,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:34:59,313 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 79 [2024-11-08 16:34:59,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 100 transitions, 441 flow. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:34:59,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:34:59,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 79 [2024-11-08 16:34:59,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:35:00,074 INFO L124 PetriNetUnfolderBase]: 2054/4087 cut-off events. [2024-11-08 16:35:00,074 INFO L125 PetriNetUnfolderBase]: For 1704/1764 co-relation queries the response was YES. [2024-11-08 16:35:00,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9158 conditions, 4087 events. 2054/4087 cut-off events. For 1704/1764 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 27310 event pairs, 1574 based on Foata normal form. 88/3733 useless extension candidates. Maximal degree in co-relation 9135. Up to 2460 conditions per place. [2024-11-08 16:35:00,116 INFO L140 encePairwiseOnDemand]: 72/79 looper letters, 80 selfloop transitions, 10 changer transitions 4/122 dead transitions. [2024-11-08 16:35:00,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 122 transitions, 706 flow [2024-11-08 16:35:00,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:35:00,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 16:35:00,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 214 transitions. [2024-11-08 16:35:00,119 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5417721518987342 [2024-11-08 16:35:00,119 INFO L175 Difference]: Start difference. First operand has 89 places, 100 transitions, 441 flow. Second operand 5 states and 214 transitions. [2024-11-08 16:35:00,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 122 transitions, 706 flow [2024-11-08 16:35:00,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 122 transitions, 701 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:35:00,125 INFO L231 Difference]: Finished difference. Result has 94 places, 102 transitions, 480 flow [2024-11-08 16:35:00,126 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=480, PETRI_PLACES=94, PETRI_TRANSITIONS=102} [2024-11-08 16:35:00,128 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 20 predicate places. [2024-11-08 16:35:00,128 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 102 transitions, 480 flow [2024-11-08 16:35:00,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:00,129 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:00,129 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-08 16:35:00,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 16:35:00,129 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-08 16:35:00,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:00,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1247046160, now seen corresponding path program 2 times [2024-11-08 16:35:00,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:00,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611574360] [2024-11-08 16:35:00,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:00,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:00,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:00,380 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:00,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:00,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611574360] [2024-11-08 16:35:00,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611574360] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:35:00,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334090204] [2024-11-08 16:35:00,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:35:00,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:35:00,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:35:00,384 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:35:00,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 16:35:00,494 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 16:35:00,495 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:35:00,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 16:35:00,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:35:00,595 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 16:35:00,595 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:35:00,677 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 16:35:00,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334090204] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:35:00,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:35:00,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 3, 3] total 13 [2024-11-08 16:35:00,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32309886] [2024-11-08 16:35:00,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:35:00,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 16:35:00,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:00,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 16:35:00,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-08 16:35:00,776 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 79 [2024-11-08 16:35:00,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 102 transitions, 480 flow. Second operand has 15 states, 15 states have (on average 26.533333333333335) internal successors, (398), 15 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:00,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:35:00,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 79 [2024-11-08 16:35:00,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:35:01,904 INFO L124 PetriNetUnfolderBase]: 2063/4064 cut-off events. [2024-11-08 16:35:01,904 INFO L125 PetriNetUnfolderBase]: For 1859/1999 co-relation queries the response was YES. [2024-11-08 16:35:01,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9267 conditions, 4064 events. 2063/4064 cut-off events. For 1859/1999 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 26762 event pairs, 1574 based on Foata normal form. 6/3624 useless extension candidates. Maximal degree in co-relation 9242. Up to 2884 conditions per place. [2024-11-08 16:35:01,951 INFO L140 encePairwiseOnDemand]: 67/79 looper letters, 69 selfloop transitions, 57 changer transitions 0/149 dead transitions. [2024-11-08 16:35:01,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 149 transitions, 946 flow [2024-11-08 16:35:01,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-08 16:35:01,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-08 16:35:01,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 787 transitions. [2024-11-08 16:35:01,956 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3689639006094702 [2024-11-08 16:35:01,957 INFO L175 Difference]: Start difference. First operand has 94 places, 102 transitions, 480 flow. Second operand 27 states and 787 transitions. [2024-11-08 16:35:01,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 149 transitions, 946 flow [2024-11-08 16:35:01,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 149 transitions, 937 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:35:01,968 INFO L231 Difference]: Finished difference. Result has 121 places, 124 transitions, 726 flow [2024-11-08 16:35:01,968 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=726, PETRI_PLACES=121, PETRI_TRANSITIONS=124} [2024-11-08 16:35:01,969 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 47 predicate places. [2024-11-08 16:35:01,969 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 124 transitions, 726 flow [2024-11-08 16:35:01,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 26.533333333333335) internal successors, (398), 15 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:01,971 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:01,971 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:35:01,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 16:35:02,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 16:35:02,176 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-08 16:35:02,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:02,177 INFO L85 PathProgramCache]: Analyzing trace with hash 468987228, now seen corresponding path program 1 times [2024-11-08 16:35:02,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:02,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219948754] [2024-11-08 16:35:02,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:02,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:02,409 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:02,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:02,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219948754] [2024-11-08 16:35:02,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219948754] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:35:02,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734998030] [2024-11-08 16:35:02,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:02,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:35:02,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:35:02,414 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:35:02,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 16:35:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:02,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 16:35:02,538 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:35:02,691 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:02,691 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:35:02,906 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:02,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734998030] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:35:02,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:35:02,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-08 16:35:02,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56221516] [2024-11-08 16:35:02,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:35:02,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 16:35:02,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:02,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 16:35:02,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-08 16:35:03,049 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 79 [2024-11-08 16:35:03,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 124 transitions, 726 flow. Second operand has 15 states, 15 states have (on average 27.2) internal successors, (408), 15 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:03,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:35:03,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 79 [2024-11-08 16:35:03,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:35:04,981 INFO L124 PetriNetUnfolderBase]: 3366/6710 cut-off events. [2024-11-08 16:35:04,981 INFO L125 PetriNetUnfolderBase]: For 3433/3573 co-relation queries the response was YES. [2024-11-08 16:35:05,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15422 conditions, 6710 events. 3366/6710 cut-off events. For 3433/3573 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 49140 event pairs, 2162 based on Foata normal form. 284/6270 useless extension candidates. Maximal degree in co-relation 15393. Up to 2838 conditions per place. [2024-11-08 16:35:05,070 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 110 selfloop transitions, 74 changer transitions 47/254 dead transitions. [2024-11-08 16:35:05,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 254 transitions, 1972 flow [2024-11-08 16:35:05,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 16:35:05,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-08 16:35:05,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 538 transitions. [2024-11-08 16:35:05,073 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4005956813104989 [2024-11-08 16:35:05,073 INFO L175 Difference]: Start difference. First operand has 121 places, 124 transitions, 726 flow. Second operand 17 states and 538 transitions. [2024-11-08 16:35:05,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 254 transitions, 1972 flow [2024-11-08 16:35:05,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 254 transitions, 1625 flow, removed 82 selfloop flow, removed 12 redundant places. [2024-11-08 16:35:05,090 INFO L231 Difference]: Finished difference. Result has 133 places, 161 transitions, 1063 flow [2024-11-08 16:35:05,090 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1063, PETRI_PLACES=133, PETRI_TRANSITIONS=161} [2024-11-08 16:35:05,091 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 59 predicate places. [2024-11-08 16:35:05,091 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 161 transitions, 1063 flow [2024-11-08 16:35:05,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 27.2) internal successors, (408), 15 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:05,093 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:05,093 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:35:05,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 16:35:05,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:35:05,298 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-08 16:35:05,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:05,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1688922842, now seen corresponding path program 1 times [2024-11-08 16:35:05,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:05,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093962221] [2024-11-08 16:35:05,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:05,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:05,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:35:05,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:05,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093962221] [2024-11-08 16:35:05,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093962221] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:35:05,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992793366] [2024-11-08 16:35:05,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:05,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:35:05,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:35:05,561 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:35:05,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 16:35:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:05,697 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 16:35:05,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:35:05,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 16:35:05,765 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:35:05,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992793366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:35:05,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:35:05,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-11-08 16:35:05,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783637710] [2024-11-08 16:35:05,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:35:05,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:35:05,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:05,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:35:05,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:35:05,771 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 79 [2024-11-08 16:35:05,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 161 transitions, 1063 flow. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:05,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:35:05,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 79 [2024-11-08 16:35:05,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:35:06,455 INFO L124 PetriNetUnfolderBase]: 2310/4941 cut-off events. [2024-11-08 16:35:06,455 INFO L125 PetriNetUnfolderBase]: For 3607/3647 co-relation queries the response was YES. [2024-11-08 16:35:06,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11246 conditions, 4941 events. 2310/4941 cut-off events. For 3607/3647 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 37184 event pairs, 1780 based on Foata normal form. 230/4633 useless extension candidates. Maximal degree in co-relation 11211. Up to 3303 conditions per place. [2024-11-08 16:35:06,508 INFO L140 encePairwiseOnDemand]: 76/79 looper letters, 108 selfloop transitions, 1 changer transitions 0/159 dead transitions. [2024-11-08 16:35:06,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 159 transitions, 1273 flow [2024-11-08 16:35:06,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:35:06,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:35:06,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 137 transitions. [2024-11-08 16:35:06,511 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5780590717299579 [2024-11-08 16:35:06,511 INFO L175 Difference]: Start difference. First operand has 133 places, 161 transitions, 1063 flow. Second operand 3 states and 137 transitions. [2024-11-08 16:35:06,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 159 transitions, 1273 flow [2024-11-08 16:35:06,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 159 transitions, 1157 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-11-08 16:35:06,526 INFO L231 Difference]: Finished difference. Result has 126 places, 159 transitions, 941 flow [2024-11-08 16:35:06,527 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=941, PETRI_PLACES=126, PETRI_TRANSITIONS=159} [2024-11-08 16:35:06,527 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 52 predicate places. [2024-11-08 16:35:06,528 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 159 transitions, 941 flow [2024-11-08 16:35:06,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:06,528 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:06,528 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:35:06,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 16:35:06,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 16:35:06,729 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-08 16:35:06,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:06,731 INFO L85 PathProgramCache]: Analyzing trace with hash -447854263, now seen corresponding path program 1 times [2024-11-08 16:35:06,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:06,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946988162] [2024-11-08 16:35:06,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:06,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:06,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:07,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:35:07,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:07,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946988162] [2024-11-08 16:35:07,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946988162] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:35:07,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031627515] [2024-11-08 16:35:07,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:07,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:35:07,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:35:07,592 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:35:07,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 16:35:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:07,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-08 16:35:07,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:35:07,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-08 16:35:08,311 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-08 16:35:08,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-08 16:35:08,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:35:08,346 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:35:08,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-08 16:35:08,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-08 16:35:08,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:35:08,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031627515] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:35:08,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:35:08,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 23 [2024-11-08 16:35:08,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367971700] [2024-11-08 16:35:08,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:35:08,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 16:35:08,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:08,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 16:35:08,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2024-11-08 16:35:09,357 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 79 [2024-11-08 16:35:09,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 159 transitions, 941 flow. Second operand has 24 states, 24 states have (on average 23.083333333333332) internal successors, (554), 24 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:09,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:35:09,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 79 [2024-11-08 16:35:09,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:35:15,130 INFO L124 PetriNetUnfolderBase]: 12682/22594 cut-off events. [2024-11-08 16:35:15,130 INFO L125 PetriNetUnfolderBase]: For 11029/11489 co-relation queries the response was YES. [2024-11-08 16:35:15,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51865 conditions, 22594 events. 12682/22594 cut-off events. For 11029/11489 co-relation queries the response was YES. Maximal size of possible extension queue 870. Compared 187396 event pairs, 4896 based on Foata normal form. 0/20022 useless extension candidates. Maximal degree in co-relation 51832. Up to 3752 conditions per place. [2024-11-08 16:35:15,443 INFO L140 encePairwiseOnDemand]: 63/79 looper letters, 271 selfloop transitions, 88 changer transitions 0/378 dead transitions. [2024-11-08 16:35:15,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 378 transitions, 2513 flow [2024-11-08 16:35:15,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-08 16:35:15,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-08 16:35:15,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 647 transitions. [2024-11-08 16:35:15,448 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40949367088607597 [2024-11-08 16:35:15,448 INFO L175 Difference]: Start difference. First operand has 126 places, 159 transitions, 941 flow. Second operand 20 states and 647 transitions. [2024-11-08 16:35:15,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 378 transitions, 2513 flow [2024-11-08 16:35:15,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 378 transitions, 2504 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-08 16:35:15,473 INFO L231 Difference]: Finished difference. Result has 150 places, 183 transitions, 1328 flow [2024-11-08 16:35:15,474 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1328, PETRI_PLACES=150, PETRI_TRANSITIONS=183} [2024-11-08 16:35:15,474 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 76 predicate places. [2024-11-08 16:35:15,474 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 183 transitions, 1328 flow [2024-11-08 16:35:15,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 23.083333333333332) internal successors, (554), 24 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:15,475 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:15,475 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:35:15,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 16:35:15,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-08 16:35:15,676 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-08 16:35:15,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:15,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1357314542, now seen corresponding path program 2 times [2024-11-08 16:35:15,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:15,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757827671] [2024-11-08 16:35:15,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:15,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:15,793 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 16:35:15,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:15,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757827671] [2024-11-08 16:35:15,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757827671] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:35:15,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083687948] [2024-11-08 16:35:15,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:35:15,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:35:15,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:35:15,797 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:35:15,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 16:35:15,917 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:35:15,917 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:35:15,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 16:35:15,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:35:15,971 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 16:35:15,971 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:35:15,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083687948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:35:15,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:35:15,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-08 16:35:15,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246544556] [2024-11-08 16:35:15,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:35:15,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:35:15,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:15,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:35:15,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-08 16:35:16,005 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 79 [2024-11-08 16:35:16,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 183 transitions, 1328 flow. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:16,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:35:16,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 79 [2024-11-08 16:35:16,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:35:19,114 INFO L124 PetriNetUnfolderBase]: 10852/19711 cut-off events. [2024-11-08 16:35:19,114 INFO L125 PetriNetUnfolderBase]: For 16843/17143 co-relation queries the response was YES. [2024-11-08 16:35:19,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50810 conditions, 19711 events. 10852/19711 cut-off events. For 16843/17143 co-relation queries the response was YES. Maximal size of possible extension queue 730. Compared 163404 event pairs, 3566 based on Foata normal form. 266/18520 useless extension candidates. Maximal degree in co-relation 50772. Up to 5794 conditions per place. [2024-11-08 16:35:19,301 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 175 selfloop transitions, 7 changer transitions 0/234 dead transitions. [2024-11-08 16:35:19,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 234 transitions, 1942 flow [2024-11-08 16:35:19,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:35:19,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:35:19,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2024-11-08 16:35:19,303 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5886075949367089 [2024-11-08 16:35:19,303 INFO L175 Difference]: Start difference. First operand has 150 places, 183 transitions, 1328 flow. Second operand 4 states and 186 transitions. [2024-11-08 16:35:19,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 234 transitions, 1942 flow [2024-11-08 16:35:19,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 234 transitions, 1891 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-11-08 16:35:19,401 INFO L231 Difference]: Finished difference. Result has 147 places, 182 transitions, 1295 flow [2024-11-08 16:35:19,402 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1281, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1295, PETRI_PLACES=147, PETRI_TRANSITIONS=182} [2024-11-08 16:35:19,402 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 73 predicate places. [2024-11-08 16:35:19,402 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 182 transitions, 1295 flow [2024-11-08 16:35:19,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:19,403 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:19,403 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:35:19,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 16:35:19,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-08 16:35:19,606 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-08 16:35:19,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:19,606 INFO L85 PathProgramCache]: Analyzing trace with hash 957466952, now seen corresponding path program 1 times [2024-11-08 16:35:19,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:19,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574894215] [2024-11-08 16:35:19,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:19,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:19,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:20,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:35:20,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:20,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574894215] [2024-11-08 16:35:20,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574894215] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:35:20,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966609806] [2024-11-08 16:35:20,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:20,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:35:20,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:35:20,351 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:35:20,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 16:35:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:20,486 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 16:35:20,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:35:20,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-08 16:35:21,084 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-08 16:35:21,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-08 16:35:21,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:35:21,118 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:35:21,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-08 16:35:21,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2024-11-08 16:35:21,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:35:21,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966609806] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:35:21,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:35:21,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 23 [2024-11-08 16:35:21,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610140680] [2024-11-08 16:35:21,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:35:21,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 16:35:21,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:21,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 16:35:21,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2024-11-08 16:35:22,375 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 79 [2024-11-08 16:35:22,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 182 transitions, 1295 flow. Second operand has 24 states, 24 states have (on average 24.083333333333332) internal successors, (578), 24 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:22,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:35:22,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 79 [2024-11-08 16:35:22,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:35:28,425 INFO L124 PetriNetUnfolderBase]: 10352/19108 cut-off events. [2024-11-08 16:35:28,425 INFO L125 PetriNetUnfolderBase]: For 21284/21558 co-relation queries the response was YES. [2024-11-08 16:35:28,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51337 conditions, 19108 events. 10352/19108 cut-off events. For 21284/21558 co-relation queries the response was YES. Maximal size of possible extension queue 742. Compared 160989 event pairs, 4584 based on Foata normal form. 308/18284 useless extension candidates. Maximal degree in co-relation 51298. Up to 3752 conditions per place. [2024-11-08 16:35:28,734 INFO L140 encePairwiseOnDemand]: 63/79 looper letters, 266 selfloop transitions, 86 changer transitions 0/375 dead transitions. [2024-11-08 16:35:28,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 375 transitions, 2858 flow [2024-11-08 16:35:28,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-08 16:35:28,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-08 16:35:28,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 660 transitions. [2024-11-08 16:35:28,736 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4177215189873418 [2024-11-08 16:35:28,736 INFO L175 Difference]: Start difference. First operand has 147 places, 182 transitions, 1295 flow. Second operand 20 states and 660 transitions. [2024-11-08 16:35:28,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 375 transitions, 2858 flow [2024-11-08 16:35:28,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 375 transitions, 2756 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 16:35:28,844 INFO L231 Difference]: Finished difference. Result has 165 places, 184 transitions, 1474 flow [2024-11-08 16:35:28,845 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1281, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1474, PETRI_PLACES=165, PETRI_TRANSITIONS=184} [2024-11-08 16:35:28,845 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 91 predicate places. [2024-11-08 16:35:28,846 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 184 transitions, 1474 flow [2024-11-08 16:35:28,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 24.083333333333332) internal successors, (578), 24 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:28,846 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:28,846 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:35:28,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 16:35:29,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-08 16:35:29,051 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-08 16:35:29,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:29,052 INFO L85 PathProgramCache]: Analyzing trace with hash -872921291, now seen corresponding path program 1 times [2024-11-08 16:35:29,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:29,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669886014] [2024-11-08 16:35:29,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:29,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:29,149 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 16:35:29,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:29,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669886014] [2024-11-08 16:35:29,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669886014] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:35:29,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770621418] [2024-11-08 16:35:29,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:29,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:35:29,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:35:29,152 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:35:29,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 16:35:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:29,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 16:35:29,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:35:29,292 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 16:35:29,293 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:35:29,339 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 16:35:29,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770621418] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:35:29,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:35:29,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-08 16:35:29,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91516788] [2024-11-08 16:35:29,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:35:29,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 16:35:29,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:29,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 16:35:29,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-08 16:35:29,414 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 79 [2024-11-08 16:35:29,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 184 transitions, 1474 flow. Second operand has 12 states, 12 states have (on average 34.0) internal successors, (408), 12 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:29,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:35:29,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 79 [2024-11-08 16:35:29,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:35:34,258 INFO L124 PetriNetUnfolderBase]: 16125/30511 cut-off events. [2024-11-08 16:35:34,258 INFO L125 PetriNetUnfolderBase]: For 35333/35825 co-relation queries the response was YES. [2024-11-08 16:35:34,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77278 conditions, 30511 events. 16125/30511 cut-off events. For 35333/35825 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 264676 event pairs, 3930 based on Foata normal form. 0/27002 useless extension candidates. Maximal degree in co-relation 77237. Up to 10198 conditions per place. [2024-11-08 16:35:34,628 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 336 selfloop transitions, 13 changer transitions 0/404 dead transitions. [2024-11-08 16:35:34,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 404 transitions, 3410 flow [2024-11-08 16:35:34,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 16:35:34,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 16:35:34,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 483 transitions. [2024-11-08 16:35:34,631 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6113924050632912 [2024-11-08 16:35:34,631 INFO L175 Difference]: Start difference. First operand has 165 places, 184 transitions, 1474 flow. Second operand 10 states and 483 transitions. [2024-11-08 16:35:34,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 404 transitions, 3410 flow [2024-11-08 16:35:34,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 404 transitions, 3122 flow, removed 6 selfloop flow, removed 15 redundant places. [2024-11-08 16:35:34,810 INFO L231 Difference]: Finished difference. Result has 162 places, 193 transitions, 1418 flow [2024-11-08 16:35:34,811 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1338, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1418, PETRI_PLACES=162, PETRI_TRANSITIONS=193} [2024-11-08 16:35:34,811 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 88 predicate places. [2024-11-08 16:35:34,811 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 193 transitions, 1418 flow [2024-11-08 16:35:34,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 34.0) internal successors, (408), 12 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:34,812 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:34,812 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:35:34,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 16:35:35,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 16:35:35,013 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-08 16:35:35,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:35,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1573696120, now seen corresponding path program 1 times [2024-11-08 16:35:35,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:35,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73071974] [2024-11-08 16:35:35,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:35,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:35,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:35:35,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:35,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73071974] [2024-11-08 16:35:35,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73071974] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:35:35,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667573906] [2024-11-08 16:35:35,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:35,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:35:35,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:35:36,000 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:35:36,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 16:35:36,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:36,155 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-08 16:35:36,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:35:36,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-08 16:35:36,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-08 16:35:36,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:35:36,965 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:35:37,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-08 16:35:37,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-11-08 16:35:37,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:35:37,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667573906] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:35:37,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:35:37,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 26 [2024-11-08 16:35:37,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376417440] [2024-11-08 16:35:37,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:35:37,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-08 16:35:37,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:37,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-08 16:35:37,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2024-11-08 16:35:38,420 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 79 [2024-11-08 16:35:38,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 193 transitions, 1418 flow. Second operand has 27 states, 27 states have (on average 23.48148148148148) internal successors, (634), 27 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:38,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:35:38,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 79 [2024-11-08 16:35:38,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:35:52,997 INFO L124 PetriNetUnfolderBase]: 33307/59177 cut-off events. [2024-11-08 16:35:52,997 INFO L125 PetriNetUnfolderBase]: For 82685/84275 co-relation queries the response was YES. [2024-11-08 16:35:53,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166779 conditions, 59177 events. 33307/59177 cut-off events. For 82685/84275 co-relation queries the response was YES. Maximal size of possible extension queue 1390. Compared 532589 event pairs, 5678 based on Foata normal form. 88/54383 useless extension candidates. Maximal degree in co-relation 166736. Up to 10035 conditions per place. [2024-11-08 16:35:53,773 INFO L140 encePairwiseOnDemand]: 62/79 looper letters, 482 selfloop transitions, 112 changer transitions 0/621 dead transitions. [2024-11-08 16:35:53,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 621 transitions, 4908 flow [2024-11-08 16:35:53,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-08 16:35:53,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-08 16:35:53,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 903 transitions. [2024-11-08 16:35:53,777 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40822784810126583 [2024-11-08 16:35:53,777 INFO L175 Difference]: Start difference. First operand has 162 places, 193 transitions, 1418 flow. Second operand 28 states and 903 transitions. [2024-11-08 16:35:53,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 621 transitions, 4908 flow [2024-11-08 16:35:54,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 621 transitions, 4564 flow, removed 130 selfloop flow, removed 3 redundant places. [2024-11-08 16:35:54,088 INFO L231 Difference]: Finished difference. Result has 195 places, 231 transitions, 1962 flow [2024-11-08 16:35:54,088 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1388, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1962, PETRI_PLACES=195, PETRI_TRANSITIONS=231} [2024-11-08 16:35:54,089 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 121 predicate places. [2024-11-08 16:35:54,089 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 231 transitions, 1962 flow [2024-11-08 16:35:54,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 23.48148148148148) internal successors, (634), 27 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:54,090 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:35:54,090 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:35:54,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 16:35:54,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-08 16:35:54,292 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-08 16:35:54,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:54,292 INFO L85 PathProgramCache]: Analyzing trace with hash -705441238, now seen corresponding path program 1 times [2024-11-08 16:35:54,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:54,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725050513] [2024-11-08 16:35:54,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:54,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:54,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:35:54,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:54,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725050513] [2024-11-08 16:35:54,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725050513] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:35:54,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282955603] [2024-11-08 16:35:54,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:54,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:35:54,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:35:54,951 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:35:54,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 16:35:55,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:55,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-08 16:35:55,074 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:35:55,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-08 16:35:55,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-08 16:35:55,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:35:55,834 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:35:56,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-08 16:35:56,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2024-11-08 16:35:56,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:35:56,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282955603] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:35:56,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:35:56,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 26 [2024-11-08 16:35:56,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944547231] [2024-11-08 16:35:56,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:35:56,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-08 16:35:56,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:56,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-08 16:35:56,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2024-11-08 16:35:57,037 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 79 [2024-11-08 16:35:57,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 231 transitions, 1962 flow. Second operand has 27 states, 27 states have (on average 24.48148148148148) internal successors, (661), 27 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:35:57,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:35:57,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 79 [2024-11-08 16:35:57,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:36:11,144 INFO L124 PetriNetUnfolderBase]: 28710/53387 cut-off events. [2024-11-08 16:36:11,144 INFO L125 PetriNetUnfolderBase]: For 97853/99445 co-relation queries the response was YES. [2024-11-08 16:36:11,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160936 conditions, 53387 events. 28710/53387 cut-off events. For 97853/99445 co-relation queries the response was YES. Maximal size of possible extension queue 1239. Compared 494531 event pairs, 5410 based on Foata normal form. 1686/52857 useless extension candidates. Maximal degree in co-relation 160883. Up to 10257 conditions per place. [2024-11-08 16:36:11,863 INFO L140 encePairwiseOnDemand]: 62/79 looper letters, 475 selfloop transitions, 118 changer transitions 0/624 dead transitions. [2024-11-08 16:36:11,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 624 transitions, 4999 flow [2024-11-08 16:36:11,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-08 16:36:11,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-08 16:36:11,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 924 transitions. [2024-11-08 16:36:11,867 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4177215189873418 [2024-11-08 16:36:11,867 INFO L175 Difference]: Start difference. First operand has 195 places, 231 transitions, 1962 flow. Second operand 28 states and 924 transitions. [2024-11-08 16:36:11,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 624 transitions, 4999 flow [2024-11-08 16:36:13,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 624 transitions, 4827 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-11-08 16:36:13,651 INFO L231 Difference]: Finished difference. Result has 218 places, 240 transitions, 2161 flow [2024-11-08 16:36:13,651 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1802, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2161, PETRI_PLACES=218, PETRI_TRANSITIONS=240} [2024-11-08 16:36:13,652 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 144 predicate places. [2024-11-08 16:36:13,652 INFO L471 AbstractCegarLoop]: Abstraction has has 218 places, 240 transitions, 2161 flow [2024-11-08 16:36:13,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 24.48148148148148) internal successors, (661), 27 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:13,652 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:36:13,652 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:36:13,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-08 16:36:13,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ec14af-6606-4320-8335-8b28895ef772/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 16:36:13,853 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-11-08 16:36:13,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:36:13,853 INFO L85 PathProgramCache]: Analyzing trace with hash 15416561, now seen corresponding path program 1 times [2024-11-08 16:36:13,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:36:13,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483246177] [2024-11-08 16:36:13,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:13,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:36:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:13,946 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 16:36:13,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:36:13,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483246177] [2024-11-08 16:36:13,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483246177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:36:13,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:36:13,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:36:13,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434069454] [2024-11-08 16:36:13,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:36:13,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:36:13,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:36:13,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:36:13,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:36:13,948 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 79 [2024-11-08 16:36:13,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 240 transitions, 2161 flow. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:36:13,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:36:13,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 79 [2024-11-08 16:36:13,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand