./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/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_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/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_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/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 fe7fc3189e39cd6587b4d7d83621bd29f6e1c085e1b3af197b9abc1746b629ea --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:49:56,924 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:49:56,987 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-08 17:49:56,991 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:49:56,992 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:49:57,039 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:49:57,039 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:49:57,040 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:49:57,040 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:49:57,041 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:49:57,041 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:49:57,041 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:49:57,042 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:49:57,042 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:49:57,043 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:49:57,043 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:49:57,044 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:49:57,050 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:49:57,051 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:49:57,051 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:49:57,052 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:49:57,052 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:49:57,052 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:49:57,053 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:49:57,053 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:49:57,054 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 17:49:57,054 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 17:49:57,054 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:49:57,055 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:49:57,055 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:49:57,055 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:49:57,056 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:49:57,056 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:49:57,056 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:49:57,057 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:49:57,071 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:49:57,071 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:49:57,071 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:49:57,071 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:49:57,072 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:49:57,072 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:49:57,073 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:49:57,073 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:49:57,073 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:49:57,074 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_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe7fc3189e39cd6587b4d7d83621bd29f6e1c085e1b3af197b9abc1746b629ea [2024-11-08 17:49:57,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:49:57,391 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:49:57,394 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:49:57,395 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:49:57,397 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:49:57,398 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c Unable to find full path for "g++" [2024-11-08 17:49:59,475 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:49:59,652 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:49:59,653 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c [2024-11-08 17:49:59,660 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/data/2f6e388a4/10ea7ef3a6bd4fa79d9c9737cd440198/FLAGd9c1f364f [2024-11-08 17:49:59,674 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/data/2f6e388a4/10ea7ef3a6bd4fa79d9c9737cd440198 [2024-11-08 17:49:59,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:49:59,680 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:49:59,681 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:49:59,683 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:49:59,691 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:49:59,692 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:49:59" (1/1) ... [2024-11-08 17:49:59,693 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f206709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:49:59, skipping insertion in model container [2024-11-08 17:49:59,693 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:49:59" (1/1) ... [2024-11-08 17:49:59,715 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:49:59,951 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:49:59,963 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:49:59,988 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:50:00,012 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:50:00,013 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:50:00 WrapperNode [2024-11-08 17:50:00,013 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:50:00,016 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:50:00,016 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:50:00,017 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:50:00,024 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:50:00" (1/1) ... [2024-11-08 17:50:00,032 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:50:00" (1/1) ... [2024-11-08 17:50:00,052 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 43 [2024-11-08 17:50:00,052 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:50:00,053 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:50:00,053 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:50:00,053 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:50:00,065 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:50:00" (1/1) ... [2024-11-08 17:50:00,065 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:50:00" (1/1) ... [2024-11-08 17:50:00,071 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:50:00" (1/1) ... [2024-11-08 17:50:00,095 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 17:50:00,095 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:50:00" (1/1) ... [2024-11-08 17:50:00,095 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:50:00" (1/1) ... [2024-11-08 17:50:00,103 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:50:00" (1/1) ... [2024-11-08 17:50:00,110 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:50:00" (1/1) ... [2024-11-08 17:50:00,111 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:50:00" (1/1) ... [2024-11-08 17:50:00,112 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:50:00" (1/1) ... [2024-11-08 17:50:00,114 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:50:00,114 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:50:00,115 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:50:00,115 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:50:00,115 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:50:00" (1/1) ... [2024-11-08 17:50:00,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:50:00,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:50:00,155 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:50:00,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:50:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:50:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 17:50:00,192 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 17:50:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 17:50:00,192 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 17:50:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:50:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 17:50:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 17:50:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:50:00,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:50:00,195 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 17:50:00,307 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:50:00,310 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:50:00,495 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 17:50:00,495 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:50:00,726 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:50:00,727 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 17:50:00,727 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:50:00 BoogieIcfgContainer [2024-11-08 17:50:00,727 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:50:00,730 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:50:00,731 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:50:00,735 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:50:00,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:49:59" (1/3) ... [2024-11-08 17:50:00,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c51685a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:50:00, skipping insertion in model container [2024-11-08 17:50:00,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:50:00" (2/3) ... [2024-11-08 17:50:00,737 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c51685a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:50:00, skipping insertion in model container [2024-11-08 17:50:00,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:50:00" (3/3) ... [2024-11-08 17:50:00,739 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr.wvr.c [2024-11-08 17:50:00,759 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:50:00,759 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-08 17:50:00,759 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 17:50:00,834 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-08 17:50:00,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 35 transitions, 84 flow [2024-11-08 17:50:00,906 INFO L124 PetriNetUnfolderBase]: 4/33 cut-off events. [2024-11-08 17:50:00,906 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-08 17:50:00,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 33 events. 4/33 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 81 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2024-11-08 17:50:00,910 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 35 transitions, 84 flow [2024-11-08 17:50:00,913 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 31 transitions, 71 flow [2024-11-08 17:50:00,923 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:50:00,931 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;@38b796dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:50:00,931 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-08 17:50:00,938 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:50:00,939 INFO L124 PetriNetUnfolderBase]: 1/12 cut-off events. [2024-11-08 17:50:00,939 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-08 17:50:00,939 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:50:00,940 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-08 17:50:00,941 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-08 17:50:00,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:50:00,946 INFO L85 PathProgramCache]: Analyzing trace with hash -368440735, now seen corresponding path program 1 times [2024-11-08 17:50:00,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:50:00,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911062064] [2024-11-08 17:50:00,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:50:00,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:50:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:50:01,278 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 17:50:01,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:50:01,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911062064] [2024-11-08 17:50:01,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911062064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:50:01,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:50:01,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 17:50:01,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016745144] [2024-11-08 17:50:01,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:50:01,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:50:01,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:50:01,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:50:01,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:50:01,334 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-11-08 17:50:01,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 17:50:01,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:50:01,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-11-08 17:50:01,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:50:01,514 INFO L124 PetriNetUnfolderBase]: 158/339 cut-off events. [2024-11-08 17:50:01,515 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-08 17:50:01,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 617 conditions, 339 events. 158/339 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1538 event pairs, 49 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 562. Up to 191 conditions per place. [2024-11-08 17:50:01,522 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 24 selfloop transitions, 2 changer transitions 1/39 dead transitions. [2024-11-08 17:50:01,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 39 transitions, 147 flow [2024-11-08 17:50:01,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:50:01,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:50:01,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-11-08 17:50:01,535 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7238095238095238 [2024-11-08 17:50:01,537 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 71 flow. Second operand 3 states and 76 transitions. [2024-11-08 17:50:01,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 39 transitions, 147 flow [2024-11-08 17:50:01,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 39 transitions, 139 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 17:50:01,543 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 84 flow [2024-11-08 17:50:01,545 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2024-11-08 17:50:01,549 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2024-11-08 17:50:01,549 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 84 flow [2024-11-08 17:50:01,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 17:50:01,550 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:50:01,550 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:50:01,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:50:01,550 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-08 17:50:01,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:50:01,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1884217852, now seen corresponding path program 1 times [2024-11-08 17:50:01,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:50:01,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591633724] [2024-11-08 17:50:01,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:50:01,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:50:01,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:50:01,640 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 17:50:01,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:50:01,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591633724] [2024-11-08 17:50:01,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591633724] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:50:01,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:50:01,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:50:01,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129171405] [2024-11-08 17:50:01,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:50:01,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:50:01,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:50:01,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:50:01,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:50:01,671 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-11-08 17:50:01,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 17:50:01,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:50:01,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-11-08 17:50:01,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:50:01,932 INFO L124 PetriNetUnfolderBase]: 272/561 cut-off events. [2024-11-08 17:50:01,932 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2024-11-08 17:50:01,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1131 conditions, 561 events. 272/561 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2807 event pairs, 93 based on Foata normal form. 14/423 useless extension candidates. Maximal degree in co-relation 520. Up to 337 conditions per place. [2024-11-08 17:50:01,946 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 39 selfloop transitions, 4 changer transitions 0/52 dead transitions. [2024-11-08 17:50:01,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 52 transitions, 228 flow [2024-11-08 17:50:01,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:50:01,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:50:01,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-11-08 17:50:01,949 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6357142857142857 [2024-11-08 17:50:01,949 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 84 flow. Second operand 4 states and 89 transitions. [2024-11-08 17:50:01,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 52 transitions, 228 flow [2024-11-08 17:50:01,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 52 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:50:01,954 INFO L231 Difference]: Finished difference. Result has 37 places, 34 transitions, 111 flow [2024-11-08 17:50:01,954 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=37, PETRI_TRANSITIONS=34} [2024-11-08 17:50:01,955 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2024-11-08 17:50:01,955 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 34 transitions, 111 flow [2024-11-08 17:50:01,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 17:50:01,958 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:50:01,958 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:50:01,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:50:01,959 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-08 17:50:01,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:50:01,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1119928556, now seen corresponding path program 1 times [2024-11-08 17:50:01,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:50:01,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149193492] [2024-11-08 17:50:01,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:50:01,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:50:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:50:02,080 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 17:50:02,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:50:02,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149193492] [2024-11-08 17:50:02,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149193492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:50:02,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:50:02,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:50:02,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962770746] [2024-11-08 17:50:02,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:50:02,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:50:02,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:50:02,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:50:02,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:50:02,083 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-11-08 17:50:02,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 17:50:02,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:50:02,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-11-08 17:50:02,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:50:02,167 INFO L124 PetriNetUnfolderBase]: 166/349 cut-off events. [2024-11-08 17:50:02,168 INFO L125 PetriNetUnfolderBase]: For 103/123 co-relation queries the response was YES. [2024-11-08 17:50:02,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 776 conditions, 349 events. 166/349 cut-off events. For 103/123 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1653 event pairs, 112 based on Foata normal form. 7/258 useless extension candidates. Maximal degree in co-relation 428. Up to 249 conditions per place. [2024-11-08 17:50:02,174 INFO L140 encePairwiseOnDemand]: 33/35 looper letters, 19 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2024-11-08 17:50:02,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 33 transitions, 147 flow [2024-11-08 17:50:02,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:50:02,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:50:02,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2024-11-08 17:50:02,176 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-08 17:50:02,176 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 111 flow. Second operand 3 states and 60 transitions. [2024-11-08 17:50:02,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 33 transitions, 147 flow [2024-11-08 17:50:02,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 33 transitions, 144 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:50:02,179 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 106 flow [2024-11-08 17:50:02,179 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2024-11-08 17:50:02,180 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2024-11-08 17:50:02,180 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 106 flow [2024-11-08 17:50:02,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 17:50:02,181 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:50:02,181 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:50:02,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:50:02,182 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-08 17:50:02,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:50:02,182 INFO L85 PathProgramCache]: Analyzing trace with hash -711141139, now seen corresponding path program 1 times [2024-11-08 17:50:02,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:50:02,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46268076] [2024-11-08 17:50:02,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:50:02,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:50:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:50:02,266 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 17:50:02,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:50:02,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46268076] [2024-11-08 17:50:02,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46268076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:50:02,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:50:02,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:50:02,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284669546] [2024-11-08 17:50:02,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:50:02,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:50:02,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:50:02,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:50:02,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:50:02,279 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-11-08 17:50:02,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 17:50:02,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:50:02,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-11-08 17:50:02,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:50:02,408 INFO L124 PetriNetUnfolderBase]: 244/527 cut-off events. [2024-11-08 17:50:02,408 INFO L125 PetriNetUnfolderBase]: For 133/165 co-relation queries the response was YES. [2024-11-08 17:50:02,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1069 conditions, 527 events. 244/527 cut-off events. For 133/165 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2793 event pairs, 112 based on Foata normal form. 24/409 useless extension candidates. Maximal degree in co-relation 1059. Up to 250 conditions per place. [2024-11-08 17:50:02,413 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 31 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2024-11-08 17:50:02,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 46 transitions, 217 flow [2024-11-08 17:50:02,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:50:02,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:50:02,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-11-08 17:50:02,414 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6761904761904762 [2024-11-08 17:50:02,414 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 106 flow. Second operand 3 states and 71 transitions. [2024-11-08 17:50:02,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 46 transitions, 217 flow [2024-11-08 17:50:02,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 46 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:50:02,417 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 119 flow [2024-11-08 17:50:02,417 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2024-11-08 17:50:02,418 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2024-11-08 17:50:02,418 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 119 flow [2024-11-08 17:50:02,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 17:50:02,418 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:50:02,418 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:50:02,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 17:50:02,419 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-08 17:50:02,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:50:02,419 INFO L85 PathProgramCache]: Analyzing trace with hash -155979013, now seen corresponding path program 1 times [2024-11-08 17:50:02,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:50:02,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78911980] [2024-11-08 17:50:02,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:50:02,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:50:02,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:50:02,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:50:02,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:50:02,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78911980] [2024-11-08 17:50:02,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78911980] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:50:02,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:50:02,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:50:02,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721287601] [2024-11-08 17:50:02,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:50:02,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:50:02,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:50:02,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:50:02,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:50:02,464 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-11-08 17:50:02,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 17:50:02,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:50:02,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-11-08 17:50:02,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:50:02,545 INFO L124 PetriNetUnfolderBase]: 215/464 cut-off events. [2024-11-08 17:50:02,545 INFO L125 PetriNetUnfolderBase]: For 214/246 co-relation queries the response was YES. [2024-11-08 17:50:02,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1040 conditions, 464 events. 215/464 cut-off events. For 214/246 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2338 event pairs, 145 based on Foata normal form. 11/357 useless extension candidates. Maximal degree in co-relation 1029. Up to 308 conditions per place. [2024-11-08 17:50:02,549 INFO L140 encePairwiseOnDemand]: 33/35 looper letters, 19 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2024-11-08 17:50:02,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 33 transitions, 155 flow [2024-11-08 17:50:02,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:50:02,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:50:02,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-11-08 17:50:02,551 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5619047619047619 [2024-11-08 17:50:02,551 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 119 flow. Second operand 3 states and 59 transitions. [2024-11-08 17:50:02,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 33 transitions, 155 flow [2024-11-08 17:50:02,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 153 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:50:02,554 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 115 flow [2024-11-08 17:50:02,554 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2024-11-08 17:50:02,555 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2024-11-08 17:50:02,555 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 115 flow [2024-11-08 17:50:02,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 17:50:02,555 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:50:02,555 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:50:02,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 17:50:02,556 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-08 17:50:02,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:50:02,556 INFO L85 PathProgramCache]: Analyzing trace with hash -155979012, now seen corresponding path program 1 times [2024-11-08 17:50:02,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:50:02,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065497404] [2024-11-08 17:50:02,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:50:02,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:50:02,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:50:02,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:50:02,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:50:02,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065497404] [2024-11-08 17:50:02,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065497404] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:50:02,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800737029] [2024-11-08 17:50:02,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:50:02,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:50:02,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:50:02,609 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:50:02,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:50:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:50:02,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:50:02,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:50:02,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:50:02,757 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:50:02,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:50:02,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800737029] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:50:02,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:50:02,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-11-08 17:50:02,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308437927] [2024-11-08 17:50:02,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:50:02,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:50:02,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:50:02,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:50:02,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:50:02,814 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-11-08 17:50:02,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 115 flow. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 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 17:50:02,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:50:02,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-11-08 17:50:02,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:50:03,110 INFO L124 PetriNetUnfolderBase]: 511/1302 cut-off events. [2024-11-08 17:50:03,110 INFO L125 PetriNetUnfolderBase]: For 495/517 co-relation queries the response was YES. [2024-11-08 17:50:03,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2795 conditions, 1302 events. 511/1302 cut-off events. For 495/517 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 7935 event pairs, 56 based on Foata normal form. 17/1097 useless extension candidates. Maximal degree in co-relation 2783. Up to 187 conditions per place. [2024-11-08 17:50:03,123 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 63 selfloop transitions, 15 changer transitions 1/92 dead transitions. [2024-11-08 17:50:03,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 92 transitions, 488 flow [2024-11-08 17:50:03,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:50:03,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 17:50:03,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-11-08 17:50:03,126 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.710204081632653 [2024-11-08 17:50:03,126 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 115 flow. Second operand 7 states and 174 transitions. [2024-11-08 17:50:03,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 92 transitions, 488 flow [2024-11-08 17:50:03,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 92 transitions, 487 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:50:03,129 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 264 flow [2024-11-08 17:50:03,130 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=264, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2024-11-08 17:50:03,130 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 15 predicate places. [2024-11-08 17:50:03,130 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 264 flow [2024-11-08 17:50:03,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 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 17:50:03,131 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:50:03,131 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-08 17:50:03,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 17:50:03,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:50:03,332 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-08 17:50:03,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:50:03,333 INFO L85 PathProgramCache]: Analyzing trace with hash 428034078, now seen corresponding path program 1 times [2024-11-08 17:50:03,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:50:03,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384724859] [2024-11-08 17:50:03,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:50:03,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:50:03,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:50:03,410 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:50:03,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:50:03,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384724859] [2024-11-08 17:50:03,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384724859] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:50:03,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717489677] [2024-11-08 17:50:03,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:50:03,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:50:03,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:50:03,416 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:50:03,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:50:03,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:50:03,474 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 17:50:03,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:50:03,535 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:50:03,536 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:50:03,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717489677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:50:03,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:50:03,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-08 17:50:03,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127838941] [2024-11-08 17:50:03,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:50:03,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:50:03,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:50:03,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:50:03,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:50:03,578 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-11-08 17:50:03,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 264 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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 17:50:03,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:50:03,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-11-08 17:50:03,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:50:03,924 INFO L124 PetriNetUnfolderBase]: 725/1545 cut-off events. [2024-11-08 17:50:03,924 INFO L125 PetriNetUnfolderBase]: For 2081/2081 co-relation queries the response was YES. [2024-11-08 17:50:03,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4257 conditions, 1545 events. 725/1545 cut-off events. For 2081/2081 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 8920 event pairs, 86 based on Foata normal form. 64/1310 useless extension candidates. Maximal degree in co-relation 4239. Up to 384 conditions per place. [2024-11-08 17:50:03,935 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 83 selfloop transitions, 7 changer transitions 0/99 dead transitions. [2024-11-08 17:50:03,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 99 transitions, 808 flow [2024-11-08 17:50:03,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:50:03,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 17:50:03,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-11-08 17:50:03,937 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5761904761904761 [2024-11-08 17:50:03,937 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 264 flow. Second operand 6 states and 121 transitions. [2024-11-08 17:50:03,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 99 transitions, 808 flow [2024-11-08 17:50:03,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 99 transitions, 770 flow, removed 19 selfloop flow, removed 0 redundant places. [2024-11-08 17:50:03,945 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 260 flow [2024-11-08 17:50:03,946 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=260, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-11-08 17:50:03,946 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 19 predicate places. [2024-11-08 17:50:03,947 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 260 flow [2024-11-08 17:50:03,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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 17:50:03,947 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:50:03,947 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:50:03,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 17:50:04,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-08 17:50:04,152 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-08 17:50:04,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:50:04,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1885937828, now seen corresponding path program 1 times [2024-11-08 17:50:04,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:50:04,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432875898] [2024-11-08 17:50:04,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:50:04,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:50:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:50:04,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:50:04,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:50:04,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432875898] [2024-11-08 17:50:04,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432875898] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:50:04,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890056387] [2024-11-08 17:50:04,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:50:04,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:50:04,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:50:04,302 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:50:04,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:50:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:50:04,368 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 17:50:04,370 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:50:04,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:50:04,448 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:50:04,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:50:04,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890056387] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 17:50:04,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:50:04,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 9 [2024-11-08 17:50:04,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841790367] [2024-11-08 17:50:04,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:50:04,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:50:04,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:50:04,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:50:04,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-11-08 17:50:04,556 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-11-08 17:50:04,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 260 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 17:50:04,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:50:04,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-11-08 17:50:04,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:50:04,727 INFO L124 PetriNetUnfolderBase]: 467/1075 cut-off events. [2024-11-08 17:50:04,727 INFO L125 PetriNetUnfolderBase]: For 1758/1778 co-relation queries the response was YES. [2024-11-08 17:50:04,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2856 conditions, 1075 events. 467/1075 cut-off events. For 1758/1778 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5964 event pairs, 71 based on Foata normal form. 0/869 useless extension candidates. Maximal degree in co-relation 2837. Up to 541 conditions per place. [2024-11-08 17:50:04,735 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 42 selfloop transitions, 4 changer transitions 1/59 dead transitions. [2024-11-08 17:50:04,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 420 flow [2024-11-08 17:50:04,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:50:04,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:50:04,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2024-11-08 17:50:04,737 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5928571428571429 [2024-11-08 17:50:04,737 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 260 flow. Second operand 4 states and 83 transitions. [2024-11-08 17:50:04,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 420 flow [2024-11-08 17:50:04,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 59 transitions, 395 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-08 17:50:04,743 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 257 flow [2024-11-08 17:50:04,744 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=257, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-11-08 17:50:04,744 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 19 predicate places. [2024-11-08 17:50:04,744 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 257 flow [2024-11-08 17:50:04,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 17:50:04,745 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:50:04,745 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:50:04,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 17:50:04,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-08 17:50:04,949 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-08 17:50:04,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:50:04,950 INFO L85 PathProgramCache]: Analyzing trace with hash 14336923, now seen corresponding path program 1 times [2024-11-08 17:50:04,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:50:04,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697040237] [2024-11-08 17:50:04,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:50:04,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:50:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:50:05,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:50:05,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:50:05,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697040237] [2024-11-08 17:50:05,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697040237] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:50:05,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960738403] [2024-11-08 17:50:05,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:50:05,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:50:05,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:50:05,033 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:50:05,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:50:05,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:50:05,092 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:50:05,093 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:50:05,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:50:05,146 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:50:05,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:50:05,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960738403] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:50:05,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:50:05,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 5 [2024-11-08 17:50:05,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900795607] [2024-11-08 17:50:05,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:50:05,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:50:05,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:50:05,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:50:05,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:50:05,243 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-11-08 17:50:05,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 257 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 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 17:50:05,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:50:05,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-11-08 17:50:05,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:50:05,679 INFO L124 PetriNetUnfolderBase]: 1284/2663 cut-off events. [2024-11-08 17:50:05,680 INFO L125 PetriNetUnfolderBase]: For 3640/3688 co-relation queries the response was YES. [2024-11-08 17:50:05,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6451 conditions, 2663 events. 1284/2663 cut-off events. For 3640/3688 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 16204 event pairs, 128 based on Foata normal form. 54/2195 useless extension candidates. Maximal degree in co-relation 6432. Up to 782 conditions per place. [2024-11-08 17:50:05,698 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 56 selfloop transitions, 16 changer transitions 10/90 dead transitions. [2024-11-08 17:50:05,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 90 transitions, 616 flow [2024-11-08 17:50:05,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:50:05,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 17:50:05,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-11-08 17:50:05,699 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5265306122448979 [2024-11-08 17:50:05,700 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 257 flow. Second operand 7 states and 129 transitions. [2024-11-08 17:50:05,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 90 transitions, 616 flow [2024-11-08 17:50:05,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 90 transitions, 594 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-08 17:50:05,706 INFO L231 Difference]: Finished difference. Result has 58 places, 46 transitions, 309 flow [2024-11-08 17:50:05,706 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=309, PETRI_PLACES=58, PETRI_TRANSITIONS=46} [2024-11-08 17:50:05,707 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 24 predicate places. [2024-11-08 17:50:05,708 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 46 transitions, 309 flow [2024-11-08 17:50:05,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 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 17:50:05,709 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:50:05,709 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-08 17:50:05,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 17:50:05,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-08 17:50:05,910 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-08 17:50:05,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:50:05,911 INFO L85 PathProgramCache]: Analyzing trace with hash 384154823, now seen corresponding path program 1 times [2024-11-08 17:50:05,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:50:05,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435424258] [2024-11-08 17:50:05,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:50:05,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:50:05,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:50:05,981 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:50:05,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:50:05,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435424258] [2024-11-08 17:50:05,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435424258] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:50:05,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914479756] [2024-11-08 17:50:05,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:50:05,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:50:05,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:50:05,984 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:50:05,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 17:50:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:50:06,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 17:50:06,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:50:06,078 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:50:06,078 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:50:06,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:50:06,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914479756] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:50:06,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:50:06,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-08 17:50:06,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295912725] [2024-11-08 17:50:06,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:50:06,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 17:50:06,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:50:06,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 17:50:06,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-08 17:50:06,193 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-11-08 17:50:06,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 309 flow. Second operand has 12 states, 12 states have (on average 12.666666666666666) internal successors, (152), 12 states have internal predecessors, (152), 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 17:50:06,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:50:06,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-11-08 17:50:06,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:50:06,664 INFO L124 PetriNetUnfolderBase]: 1025/2271 cut-off events. [2024-11-08 17:50:06,664 INFO L125 PetriNetUnfolderBase]: For 4560/4605 co-relation queries the response was YES. [2024-11-08 17:50:06,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6009 conditions, 2271 events. 1025/2271 cut-off events. For 4560/4605 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 14028 event pairs, 163 based on Foata normal form. 120/2041 useless extension candidates. Maximal degree in co-relation 5988. Up to 563 conditions per place. [2024-11-08 17:50:06,683 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 121 selfloop transitions, 9 changer transitions 0/140 dead transitions. [2024-11-08 17:50:06,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 140 transitions, 1261 flow [2024-11-08 17:50:06,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 17:50:06,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 17:50:06,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-11-08 17:50:06,684 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5342857142857143 [2024-11-08 17:50:06,684 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 309 flow. Second operand 10 states and 187 transitions. [2024-11-08 17:50:06,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 140 transitions, 1261 flow [2024-11-08 17:50:06,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 140 transitions, 1215 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-11-08 17:50:06,694 INFO L231 Difference]: Finished difference. Result has 66 places, 52 transitions, 363 flow [2024-11-08 17:50:06,694 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=363, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2024-11-08 17:50:06,695 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 32 predicate places. [2024-11-08 17:50:06,697 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 363 flow [2024-11-08 17:50:06,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.666666666666666) internal successors, (152), 12 states have internal predecessors, (152), 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 17:50:06,697 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:50:06,697 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1] [2024-11-08 17:50:06,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 17:50:06,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 17:50:06,902 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-08 17:50:06,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:50:06,902 INFO L85 PathProgramCache]: Analyzing trace with hash -567408694, now seen corresponding path program 2 times [2024-11-08 17:50:06,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:50:06,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017051585] [2024-11-08 17:50:06,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:50:06,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:50:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:50:07,013 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:50:07,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:50:07,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017051585] [2024-11-08 17:50:07,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017051585] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:50:07,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164832181] [2024-11-08 17:50:07,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:50:07,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:50:07,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:50:07,016 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:50:07,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 17:50:07,072 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:50:07,073 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:50:07,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 17:50:07,075 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:50:07,140 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:50:07,141 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:50:07,250 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:50:07,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164832181] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:50:07,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:50:07,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-08 17:50:07,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022933326] [2024-11-08 17:50:07,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:50:07,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 17:50:07,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:50:07,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 17:50:07,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-08 17:50:07,253 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-11-08 17:50:07,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 363 flow. Second operand has 13 states, 13 states have (on average 16.153846153846153) internal successors, (210), 13 states have internal predecessors, (210), 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 17:50:07,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:50:07,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-11-08 17:50:07,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:50:07,972 INFO L124 PetriNetUnfolderBase]: 1334/3722 cut-off events. [2024-11-08 17:50:07,973 INFO L125 PetriNetUnfolderBase]: For 10674/10800 co-relation queries the response was YES. [2024-11-08 17:50:07,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10246 conditions, 3722 events. 1334/3722 cut-off events. For 10674/10800 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 26994 event pairs, 47 based on Foata normal form. 146/3286 useless extension candidates. Maximal degree in co-relation 10223. Up to 545 conditions per place. [2024-11-08 17:50:08,003 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 98 selfloop transitions, 49 changer transitions 0/163 dead transitions. [2024-11-08 17:50:08,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 163 transitions, 1392 flow [2024-11-08 17:50:08,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 17:50:08,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-08 17:50:08,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 288 transitions. [2024-11-08 17:50:08,005 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6329670329670329 [2024-11-08 17:50:08,005 INFO L175 Difference]: Start difference. First operand has 66 places, 52 transitions, 363 flow. Second operand 13 states and 288 transitions. [2024-11-08 17:50:08,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 163 transitions, 1392 flow [2024-11-08 17:50:08,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 163 transitions, 1363 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-11-08 17:50:08,020 INFO L231 Difference]: Finished difference. Result has 86 places, 92 transitions, 936 flow [2024-11-08 17:50:08,020 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=936, PETRI_PLACES=86, PETRI_TRANSITIONS=92} [2024-11-08 17:50:08,021 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 52 predicate places. [2024-11-08 17:50:08,021 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 92 transitions, 936 flow [2024-11-08 17:50:08,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 16.153846153846153) internal successors, (210), 13 states have internal predecessors, (210), 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 17:50:08,021 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:50:08,021 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 1, 1, 1, 1] [2024-11-08 17:50:08,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 17:50:08,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:50:08,222 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-08 17:50:08,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:50:08,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1319161145, now seen corresponding path program 2 times [2024-11-08 17:50:08,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:50:08,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847742144] [2024-11-08 17:50:08,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:50:08,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:50:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:50:08,396 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:50:08,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:50:08,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847742144] [2024-11-08 17:50:08,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847742144] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:50:08,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963444008] [2024-11-08 17:50:08,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:50:08,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:50:08,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:50:08,399 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:50:08,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 17:50:08,451 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 17:50:08,452 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:50:08,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:50:08,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:50:08,548 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-08 17:50:08,548 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:50:08,628 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-08 17:50:08,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963444008] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:50:08,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:50:08,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-11-08 17:50:08,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713292750] [2024-11-08 17:50:08,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:50:08,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 17:50:08,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:50:08,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 17:50:08,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-08 17:50:08,763 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-11-08 17:50:08,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 92 transitions, 936 flow. Second operand has 15 states, 15 states have (on average 9.733333333333333) internal successors, (146), 15 states have internal predecessors, (146), 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 17:50:08,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:50:08,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-11-08 17:50:08,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:50:10,481 INFO L124 PetriNetUnfolderBase]: 4431/7996 cut-off events. [2024-11-08 17:50:10,482 INFO L125 PetriNetUnfolderBase]: For 28861/29037 co-relation queries the response was YES. [2024-11-08 17:50:10,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25540 conditions, 7996 events. 4431/7996 cut-off events. For 28861/29037 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 53602 event pairs, 332 based on Foata normal form. 286/6954 useless extension candidates. Maximal degree in co-relation 25505. Up to 2383 conditions per place. [2024-11-08 17:50:10,618 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 311 selfloop transitions, 15 changer transitions 0/332 dead transitions. [2024-11-08 17:50:10,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 332 transitions, 3881 flow [2024-11-08 17:50:10,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 17:50:10,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-08 17:50:10,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 233 transitions. [2024-11-08 17:50:10,621 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4438095238095238 [2024-11-08 17:50:10,621 INFO L175 Difference]: Start difference. First operand has 86 places, 92 transitions, 936 flow. Second operand 15 states and 233 transitions. [2024-11-08 17:50:10,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 332 transitions, 3881 flow [2024-11-08 17:50:10,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 332 transitions, 3468 flow, removed 190 selfloop flow, removed 6 redundant places. [2024-11-08 17:50:10,672 INFO L231 Difference]: Finished difference. Result has 94 places, 94 transitions, 839 flow [2024-11-08 17:50:10,672 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=839, PETRI_PLACES=94, PETRI_TRANSITIONS=94} [2024-11-08 17:50:10,673 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 60 predicate places. [2024-11-08 17:50:10,673 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 94 transitions, 839 flow [2024-11-08 17:50:10,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.733333333333333) internal successors, (146), 15 states have internal predecessors, (146), 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 17:50:10,674 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:50:10,674 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1] [2024-11-08 17:50:10,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 17:50:10,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 17:50:10,875 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-08 17:50:10,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:50:10,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1980626202, now seen corresponding path program 3 times [2024-11-08 17:50:10,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:50:10,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258762511] [2024-11-08 17:50:10,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:50:10,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:50:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:50:11,263 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:50:11,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:50:11,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258762511] [2024-11-08 17:50:11,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258762511] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:50:11,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863032492] [2024-11-08 17:50:11,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:50:11,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:50:11,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:50:11,266 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:50:11,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 17:50:11,347 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-08 17:50:11,347 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:50:11,348 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-08 17:50:11,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:50:11,480 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:50:11,480 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:50:11,842 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:50:11,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863032492] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:50:11,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:50:11,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-08 17:50:11,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164698415] [2024-11-08 17:50:11,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:50:11,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 17:50:11,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:50:11,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 17:50:11,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-08 17:50:11,849 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-11-08 17:50:11,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 94 transitions, 839 flow. Second operand has 25 states, 25 states have (on average 16.08) internal successors, (402), 25 states have internal predecessors, (402), 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 17:50:11,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:50:11,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-11-08 17:50:11,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:50:14,014 INFO L124 PetriNetUnfolderBase]: 2970/9484 cut-off events. [2024-11-08 17:50:14,014 INFO L125 PetriNetUnfolderBase]: For 57777/58071 co-relation queries the response was YES. [2024-11-08 17:50:14,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26554 conditions, 9484 events. 2970/9484 cut-off events. For 57777/58071 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 78820 event pairs, 67 based on Foata normal form. 302/8767 useless extension candidates. Maximal degree in co-relation 26522. Up to 1427 conditions per place. [2024-11-08 17:50:14,065 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 178 selfloop transitions, 165 changer transitions 0/360 dead transitions. [2024-11-08 17:50:14,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 360 transitions, 3387 flow [2024-11-08 17:50:14,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-08 17:50:14,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-08 17:50:14,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 564 transitions. [2024-11-08 17:50:14,068 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6445714285714286 [2024-11-08 17:50:14,068 INFO L175 Difference]: Start difference. First operand has 94 places, 94 transitions, 839 flow. Second operand 25 states and 564 transitions. [2024-11-08 17:50:14,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 360 transitions, 3387 flow [2024-11-08 17:50:14,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 360 transitions, 3192 flow, removed 31 selfloop flow, removed 12 redundant places. [2024-11-08 17:50:14,113 INFO L231 Difference]: Finished difference. Result has 128 places, 212 transitions, 2578 flow [2024-11-08 17:50:14,113 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2578, PETRI_PLACES=128, PETRI_TRANSITIONS=212} [2024-11-08 17:50:14,114 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 94 predicate places. [2024-11-08 17:50:14,114 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 212 transitions, 2578 flow [2024-11-08 17:50:14,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 16.08) internal successors, (402), 25 states have internal predecessors, (402), 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 17:50:14,114 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:50:14,115 INFO L204 CegarLoopForPetriNet]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1, 1, 1] [2024-11-08 17:50:14,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 17:50:14,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:50:14,319 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-08 17:50:14,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:50:14,320 INFO L85 PathProgramCache]: Analyzing trace with hash 844232478, now seen corresponding path program 4 times [2024-11-08 17:50:14,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:50:14,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074451134] [2024-11-08 17:50:14,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:50:14,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:50:14,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:50:15,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:50:15,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:50:15,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074451134] [2024-11-08 17:50:15,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074451134] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:50:15,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192480309] [2024-11-08 17:50:15,195 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 17:50:15,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:50:15,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:50:15,197 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:50:15,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 17:50:15,308 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 17:50:15,308 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:50:15,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-08 17:50:15,315 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:50:15,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:50:15,631 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:50:16,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:50:16,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192480309] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:50:16,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:50:16,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2024-11-08 17:50:16,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305947206] [2024-11-08 17:50:16,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:50:16,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-08 17:50:16,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:50:16,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-08 17:50:16,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-08 17:50:16,656 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-11-08 17:50:16,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 212 transitions, 2578 flow. Second operand has 49 states, 49 states have (on average 16.040816326530614) internal successors, (786), 49 states have internal predecessors, (786), 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 17:50:16,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:50:16,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-11-08 17:50:16,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:50:22,469 INFO L124 PetriNetUnfolderBase]: 6869/23950 cut-off events. [2024-11-08 17:50:22,469 INFO L125 PetriNetUnfolderBase]: For 460008/460268 co-relation queries the response was YES. [2024-11-08 17:50:22,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63521 conditions, 23950 events. 6869/23950 cut-off events. For 460008/460268 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 216531 event pairs, 111 based on Foata normal form. 614/21736 useless extension candidates. Maximal degree in co-relation 63467. Up to 3892 conditions per place. [2024-11-08 17:50:22,732 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 324 selfloop transitions, 545 changer transitions 0/886 dead transitions. [2024-11-08 17:50:22,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 886 transitions, 10335 flow [2024-11-08 17:50:22,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-08 17:50:22,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-11-08 17:50:22,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 1116 transitions. [2024-11-08 17:50:22,737 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.650728862973761 [2024-11-08 17:50:22,737 INFO L175 Difference]: Start difference. First operand has 128 places, 212 transitions, 2578 flow. Second operand 49 states and 1116 transitions. [2024-11-08 17:50:22,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 886 transitions, 10335 flow [2024-11-08 17:50:22,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 886 transitions, 8457 flow, removed 911 selfloop flow, removed 5 redundant places. [2024-11-08 17:50:22,994 INFO L231 Difference]: Finished difference. Result has 217 places, 594 transitions, 7711 flow [2024-11-08 17:50:22,994 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2190, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=7711, PETRI_PLACES=217, PETRI_TRANSITIONS=594} [2024-11-08 17:50:22,995 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 183 predicate places. [2024-11-08 17:50:22,996 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 594 transitions, 7711 flow [2024-11-08 17:50:22,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 16.040816326530614) internal successors, (786), 49 states have internal predecessors, (786), 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 17:50:22,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:50:22,997 INFO L204 CegarLoopForPetriNet]: trace histogram [47, 47, 46, 46, 46, 46, 1, 1, 1, 1] [2024-11-08 17:50:23,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 17:50:23,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-08 17:50:23,202 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-08 17:50:23,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:50:23,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1384814706, now seen corresponding path program 5 times [2024-11-08 17:50:23,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:50:23,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399423425] [2024-11-08 17:50:23,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:50:23,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:50:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:50:26,000 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:50:26,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:50:26,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399423425] [2024-11-08 17:50:26,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399423425] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:50:26,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024749404] [2024-11-08 17:50:26,001 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 17:50:26,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:50:26,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:50:26,003 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:50:26,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 17:50:26,226 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-11-08 17:50:26,227 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:50:26,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-08 17:50:26,239 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:50:26,709 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:50:26,710 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:50:30,252 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:50:30,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024749404] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:50:30,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:50:30,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 95 [2024-11-08 17:50:30,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746115060] [2024-11-08 17:50:30,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:50:30,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-08 17:50:30,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:50:30,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-08 17:50:30,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-08 17:50:30,266 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-11-08 17:50:30,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 594 transitions, 7711 flow. Second operand has 97 states, 97 states have (on average 16.02061855670103) internal successors, (1554), 97 states have internal predecessors, (1554), 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 17:50:30,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:50:30,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-11-08 17:50:30,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:51:00,414 INFO L124 PetriNetUnfolderBase]: 19863/72180 cut-off events. [2024-11-08 17:51:00,414 INFO L125 PetriNetUnfolderBase]: For 3754235/3754781 co-relation queries the response was YES. [2024-11-08 17:51:01,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188960 conditions, 72180 events. 19863/72180 cut-off events. For 3754235/3754781 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 737166 event pairs, 251 based on Foata normal form. 1238/64006 useless extension candidates. Maximal degree in co-relation 188863. Up to 12644 conditions per place. [2024-11-08 17:51:01,548 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 614 selfloop transitions, 1885 changer transitions 0/2516 dead transitions. [2024-11-08 17:51:01,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 2516 transitions, 31964 flow [2024-11-08 17:51:01,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-11-08 17:51:01,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2024-11-08 17:51:01,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 2220 transitions. [2024-11-08 17:51:01,559 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6539027982326951 [2024-11-08 17:51:01,560 INFO L175 Difference]: Start difference. First operand has 217 places, 594 transitions, 7711 flow. Second operand 97 states and 2220 transitions. [2024-11-08 17:51:01,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 2516 transitions, 31964 flow [2024-11-08 17:51:03,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 2516 transitions, 25186 flow, removed 3269 selfloop flow, removed 11 redundant places. [2024-11-08 17:51:03,519 INFO L231 Difference]: Finished difference. Result has 396 places, 1936 transitions, 25340 flow [2024-11-08 17:51:03,519 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6791, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=552, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=97, PETRI_FLOW=25340, PETRI_PLACES=396, PETRI_TRANSITIONS=1936} [2024-11-08 17:51:03,520 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 362 predicate places. [2024-11-08 17:51:03,520 INFO L471 AbstractCegarLoop]: Abstraction has has 396 places, 1936 transitions, 25340 flow [2024-11-08 17:51:03,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 16.02061855670103) internal successors, (1554), 97 states have internal predecessors, (1554), 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 17:51:03,520 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:51:03,520 INFO L204 CegarLoopForPetriNet]: trace histogram [95, 95, 94, 94, 94, 94, 1, 1, 1, 1] [2024-11-08 17:51:03,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-08 17:51:03,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-08 17:51:03,721 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-08 17:51:03,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:51:03,722 INFO L85 PathProgramCache]: Analyzing trace with hash 694855790, now seen corresponding path program 6 times [2024-11-08 17:51:03,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:51:03,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517832629] [2024-11-08 17:51:03,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:51:03,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:51:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:51:13,235 INFO L134 CoverageAnalysis]: Checked inductivity of 26508 backedges. 0 proven. 26508 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:51:13,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:51:13,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517832629] [2024-11-08 17:51:13,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517832629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:51:13,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698001178] [2024-11-08 17:51:13,235 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 17:51:13,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:51:13,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:51:13,236 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:51:13,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2393805a-5ecd-4597-aa1d-6ff41b79eaeb/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 17:51:13,692 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2024-11-08 17:51:13,692 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:51:13,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 1176 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-11-08 17:51:13,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:51:14,439 INFO L134 CoverageAnalysis]: Checked inductivity of 26508 backedges. 0 proven. 26508 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:51:14,440 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:51:26,279 INFO L134 CoverageAnalysis]: Checked inductivity of 26508 backedges. 0 proven. 26508 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:51:26,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698001178] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:51:26,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:51:26,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 191 [2024-11-08 17:51:26,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608835572] [2024-11-08 17:51:26,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:51:26,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2024-11-08 17:51:26,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:51:26,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2024-11-08 17:51:26,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-08 17:51:26,303 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-11-08 17:51:26,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 1936 transitions, 25340 flow. Second operand has 193 states, 193 states have (on average 16.010362694300518) internal successors, (3090), 193 states have internal predecessors, (3090), 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 17:51:26,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:51:26,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-11-08 17:51:26,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand