./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.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_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/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_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/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_6c66cd09-258e-4789-8d2a-dec5b71eac85/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 0ead2366baa94ec77674f75cd829f45857f5651e204e91d33a749a2af2868461 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:48:37,314 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:48:37,403 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-08 17:48:37,411 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:48:37,412 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:48:37,442 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:48:37,443 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:48:37,443 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:48:37,444 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:48:37,445 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:48:37,446 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:48:37,446 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:48:37,447 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:48:37,447 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:48:37,449 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:48:37,450 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:48:37,450 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:48:37,451 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:48:37,451 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:48:37,451 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:48:37,452 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:48:37,456 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:48:37,457 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:48:37,457 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:48:37,458 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:48:37,458 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 17:48:37,458 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 17:48:37,459 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:48:37,459 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:48:37,459 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:48:37,459 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:48:37,460 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:48:37,461 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:48:37,462 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:48:37,462 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:48:37,462 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:48:37,463 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:48:37,463 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:48:37,463 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:48:37,463 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:48:37,464 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:48:37,465 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:48:37,465 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:48:37,465 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:48:37,466 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_6c66cd09-258e-4789-8d2a-dec5b71eac85/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ead2366baa94ec77674f75cd829f45857f5651e204e91d33a749a2af2868461 [2024-11-08 17:48:37,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:48:37,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:48:37,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:48:37,807 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:48:37,807 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:48:37,808 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c Unable to find full path for "g++" [2024-11-08 17:48:39,834 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:48:40,036 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:48:40,036 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2024-11-08 17:48:40,045 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/data/88e8b7ae9/f875125477ac4b42aab4cb1c31489ced/FLAGd6952955d [2024-11-08 17:48:40,070 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/data/88e8b7ae9/f875125477ac4b42aab4cb1c31489ced [2024-11-08 17:48:40,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:48:40,075 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:48:40,078 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:48:40,079 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:48:40,084 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:48:40,085 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:48:40" (1/1) ... [2024-11-08 17:48:40,086 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bbd13bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:48:40, skipping insertion in model container [2024-11-08 17:48:40,087 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:48:40" (1/1) ... [2024-11-08 17:48:40,116 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:48:40,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:48:40,338 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:48:40,361 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:48:40,382 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:48:40,382 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:48:40 WrapperNode [2024-11-08 17:48:40,382 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:48:40,384 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:48:40,384 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:48:40,384 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:48:40,392 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:48:40" (1/1) ... [2024-11-08 17:48:40,400 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:48:40" (1/1) ... [2024-11-08 17:48:40,419 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 50 [2024-11-08 17:48:40,420 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:48:40,421 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:48:40,421 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:48:40,421 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:48:40,433 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:48:40" (1/1) ... [2024-11-08 17:48:40,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:48:40" (1/1) ... [2024-11-08 17:48:40,435 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:48:40" (1/1) ... [2024-11-08 17:48:40,464 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 17:48:40,465 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:48:40" (1/1) ... [2024-11-08 17:48:40,465 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:48:40" (1/1) ... [2024-11-08 17:48:40,472 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:48:40" (1/1) ... [2024-11-08 17:48:40,476 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:48:40" (1/1) ... [2024-11-08 17:48:40,477 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:48:40" (1/1) ... [2024-11-08 17:48:40,478 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:48:40" (1/1) ... [2024-11-08 17:48:40,480 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:48:40,481 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:48:40,481 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:48:40,481 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:48:40,482 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:48:40" (1/1) ... [2024-11-08 17:48:40,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:48:40,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:48:40,522 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:48:40,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:48:40,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:48:40,556 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 17:48:40,556 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 17:48:40,556 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 17:48:40,556 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 17:48:40,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:48:40,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 17:48:40,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 17:48:40,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:48:40,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:48:40,560 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 17:48:40,684 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:48:40,686 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:48:40,966 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 17:48:40,967 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:48:41,278 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:48:41,279 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 17:48:41,282 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:48:41 BoogieIcfgContainer [2024-11-08 17:48:41,282 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:48:41,290 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:48:41,291 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:48:41,299 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:48:41,300 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:48:40" (1/3) ... [2024-11-08 17:48:41,301 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5fdffd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:48:41, skipping insertion in model container [2024-11-08 17:48:41,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:48:40" (2/3) ... [2024-11-08 17:48:41,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5fdffd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:48:41, skipping insertion in model container [2024-11-08 17:48:41,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:48:41" (3/3) ... [2024-11-08 17:48:41,304 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr-alt.wvr.c [2024-11-08 17:48:41,327 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:48:41,328 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-08 17:48:41,329 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 17:48:41,396 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-08 17:48:41,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 38 transitions, 90 flow [2024-11-08 17:48:41,482 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2024-11-08 17:48:41,483 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-08 17:48:41,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 36 events. 4/36 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. 0/22 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2024-11-08 17:48:41,487 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 38 transitions, 90 flow [2024-11-08 17:48:41,492 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 35 transitions, 82 flow [2024-11-08 17:48:41,512 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:48:41,524 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;@7983562, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:48:41,526 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-08 17:48:41,536 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:48:41,536 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2024-11-08 17:48:41,536 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-08 17:48:41,536 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:48:41,537 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-08 17:48:41,538 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 17:48:41,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:48:41,544 INFO L85 PathProgramCache]: Analyzing trace with hash 165908515, now seen corresponding path program 1 times [2024-11-08 17:48:41,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:48:41,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676077742] [2024-11-08 17:48:41,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:48:41,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:48:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:48:41,778 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 17:48:41,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:48:41,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676077742] [2024-11-08 17:48:41,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676077742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:48:41,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:48:41,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 17:48:41,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810544996] [2024-11-08 17:48:41,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:48:41,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:48:41,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:48:41,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:48:41,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:48:41,827 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-11-08 17:48:41,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 35 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 17:48:41,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:48:41,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-11-08 17:48:41,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:48:42,050 INFO L124 PetriNetUnfolderBase]: 155/335 cut-off events. [2024-11-08 17:48:42,050 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-08 17:48:42,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 617 conditions, 335 events. 155/335 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1533 event pairs, 49 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 550. Up to 192 conditions per place. [2024-11-08 17:48:42,058 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 27 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2024-11-08 17:48:42,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 44 transitions, 167 flow [2024-11-08 17:48:42,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:48:42,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:48:42,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2024-11-08 17:48:42,078 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7631578947368421 [2024-11-08 17:48:42,080 INFO L175 Difference]: Start difference. First operand has 38 places, 35 transitions, 82 flow. Second operand 3 states and 87 transitions. [2024-11-08 17:48:42,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 44 transitions, 167 flow [2024-11-08 17:48:42,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 153 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-08 17:48:42,087 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 92 flow [2024-11-08 17:48:42,090 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2024-11-08 17:48:42,094 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, -2 predicate places. [2024-11-08 17:48:42,094 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 92 flow [2024-11-08 17:48:42,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 17:48:42,095 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:48:42,095 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:48:42,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:48:42,096 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 17:48:42,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:48:42,096 INFO L85 PathProgramCache]: Analyzing trace with hash 524303750, now seen corresponding path program 1 times [2024-11-08 17:48:42,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:48:42,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358196577] [2024-11-08 17:48:42,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:48:42,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:48:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:48:42,196 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 17:48:42,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:48:42,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358196577] [2024-11-08 17:48:42,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358196577] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:48:42,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:48:42,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:48:42,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578303246] [2024-11-08 17:48:42,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:48:42,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:48:42,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:48:42,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:48:42,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:48:42,220 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-11-08 17:48:42,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 17:48:42,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:48:42,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-11-08 17:48:42,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:48:42,450 INFO L124 PetriNetUnfolderBase]: 261/525 cut-off events. [2024-11-08 17:48:42,450 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-11-08 17:48:42,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1084 conditions, 525 events. 261/525 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2660 event pairs, 93 based on Foata normal form. 14/383 useless extension candidates. Maximal degree in co-relation 484. Up to 339 conditions per place. [2024-11-08 17:48:42,457 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 40 selfloop transitions, 4 changer transitions 0/56 dead transitions. [2024-11-08 17:48:42,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 56 transitions, 236 flow [2024-11-08 17:48:42,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:48:42,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:48:42,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-11-08 17:48:42,459 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6710526315789473 [2024-11-08 17:48:42,459 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 92 flow. Second operand 4 states and 102 transitions. [2024-11-08 17:48:42,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 56 transitions, 236 flow [2024-11-08 17:48:42,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 56 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:48:42,462 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 119 flow [2024-11-08 17:48:42,462 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2024-11-08 17:48:42,464 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 2 predicate places. [2024-11-08 17:48:42,464 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 119 flow [2024-11-08 17:48:42,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 17:48:42,465 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:48:42,465 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:48:42,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:48:42,466 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 17:48:42,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:48:42,468 INFO L85 PathProgramCache]: Analyzing trace with hash 638686434, now seen corresponding path program 1 times [2024-11-08 17:48:42,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:48:42,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765983235] [2024-11-08 17:48:42,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:48:42,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:48:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:48:42,652 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 17:48:42,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:48:42,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765983235] [2024-11-08 17:48:42,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765983235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:48:42,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:48:42,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:48:42,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625235232] [2024-11-08 17:48:42,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:48:42,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:48:42,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:48:42,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:48:42,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:48:42,655 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-11-08 17:48:42,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 119 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:48:42,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:48:42,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-11-08 17:48:42,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:48:42,847 INFO L124 PetriNetUnfolderBase]: 238/552 cut-off events. [2024-11-08 17:48:42,848 INFO L125 PetriNetUnfolderBase]: For 141/151 co-relation queries the response was YES. [2024-11-08 17:48:42,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1221 conditions, 552 events. 238/552 cut-off events. For 141/151 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2844 event pairs, 51 based on Foata normal form. 4/425 useless extension candidates. Maximal degree in co-relation 395. Up to 162 conditions per place. [2024-11-08 17:48:42,857 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 40 selfloop transitions, 7 changer transitions 0/63 dead transitions. [2024-11-08 17:48:42,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 63 transitions, 288 flow [2024-11-08 17:48:42,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:48:42,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:48:42,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-11-08 17:48:42,859 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7631578947368421 [2024-11-08 17:48:42,859 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 119 flow. Second operand 4 states and 116 transitions. [2024-11-08 17:48:42,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 63 transitions, 288 flow [2024-11-08 17:48:42,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 63 transitions, 284 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:48:42,863 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 180 flow [2024-11-08 17:48:42,864 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2024-11-08 17:48:42,864 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 7 predicate places. [2024-11-08 17:48:42,865 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 180 flow [2024-11-08 17:48:42,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:48:42,865 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:48:42,865 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:48:42,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:48:42,866 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 17:48:42,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:48:42,866 INFO L85 PathProgramCache]: Analyzing trace with hash -219552847, now seen corresponding path program 1 times [2024-11-08 17:48:42,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:48:42,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588379524] [2024-11-08 17:48:42,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:48:42,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:48:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:48:42,980 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 17:48:42,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:48:42,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588379524] [2024-11-08 17:48:42,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588379524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:48:42,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:48:42,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:48:42,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295273599] [2024-11-08 17:48:42,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:48:42,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:48:42,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:48:42,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:48:42,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:48:42,995 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-11-08 17:48:42,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 17:48:42,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:48:42,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-11-08 17:48:42,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:48:43,168 INFO L124 PetriNetUnfolderBase]: 349/763 cut-off events. [2024-11-08 17:48:43,169 INFO L125 PetriNetUnfolderBase]: For 790/830 co-relation queries the response was YES. [2024-11-08 17:48:43,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1875 conditions, 763 events. 349/763 cut-off events. For 790/830 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 4317 event pairs, 158 based on Foata normal form. 20/604 useless extension candidates. Maximal degree in co-relation 915. Up to 380 conditions per place. [2024-11-08 17:48:43,175 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 42 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2024-11-08 17:48:43,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 60 transitions, 352 flow [2024-11-08 17:48:43,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:48:43,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:48:43,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-11-08 17:48:43,177 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7368421052631579 [2024-11-08 17:48:43,177 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 180 flow. Second operand 3 states and 84 transitions. [2024-11-08 17:48:43,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 60 transitions, 352 flow [2024-11-08 17:48:43,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 60 transitions, 352 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 17:48:43,184 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 198 flow [2024-11-08 17:48:43,184 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2024-11-08 17:48:43,185 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 10 predicate places. [2024-11-08 17:48:43,186 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 198 flow [2024-11-08 17:48:43,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 17:48:43,186 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:48:43,187 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:48:43,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 17:48:43,189 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 17:48:43,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:48:43,190 INFO L85 PathProgramCache]: Analyzing trace with hash -489949699, now seen corresponding path program 1 times [2024-11-08 17:48:43,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:48:43,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563885626] [2024-11-08 17:48:43,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:48:43,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:48:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:48:43,297 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 17:48:43,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:48:43,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563885626] [2024-11-08 17:48:43,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563885626] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:48:43,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102451462] [2024-11-08 17:48:43,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:48:43,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:48:43,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:48:43,303 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:48:43,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:48:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:48:43,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:48:43,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:48:43,451 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 17:48:43,451 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:48:43,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102451462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:48:43,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:48:43,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2024-11-08 17:48:43,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699430454] [2024-11-08 17:48:43,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:48:43,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:48:43,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:48:43,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:48:43,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:48:43,455 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-11-08 17:48:43,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 17:48:43,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:48:43,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-11-08 17:48:43,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:48:43,661 INFO L124 PetriNetUnfolderBase]: 413/961 cut-off events. [2024-11-08 17:48:43,661 INFO L125 PetriNetUnfolderBase]: For 1177/1199 co-relation queries the response was YES. [2024-11-08 17:48:43,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2444 conditions, 961 events. 413/961 cut-off events. For 1177/1199 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 5523 event pairs, 82 based on Foata normal form. 56/846 useless extension candidates. Maximal degree in co-relation 1077. Up to 330 conditions per place. [2024-11-08 17:48:43,670 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 33 selfloop transitions, 13 changer transitions 0/62 dead transitions. [2024-11-08 17:48:43,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 62 transitions, 379 flow [2024-11-08 17:48:43,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:48:43,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:48:43,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-11-08 17:48:43,673 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6776315789473685 [2024-11-08 17:48:43,673 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 198 flow. Second operand 4 states and 103 transitions. [2024-11-08 17:48:43,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 62 transitions, 379 flow [2024-11-08 17:48:43,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 62 transitions, 360 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-08 17:48:43,681 INFO L231 Difference]: Finished difference. Result has 50 places, 52 transitions, 308 flow [2024-11-08 17:48:43,681 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=308, PETRI_PLACES=50, PETRI_TRANSITIONS=52} [2024-11-08 17:48:43,682 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 12 predicate places. [2024-11-08 17:48:43,682 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 52 transitions, 308 flow [2024-11-08 17:48:43,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 17:48:43,683 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:48:43,683 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:48:43,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 17:48:43,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:48:43,884 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 17:48:43,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:48:43,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1023163142, now seen corresponding path program 1 times [2024-11-08 17:48:43,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:48:43,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768959787] [2024-11-08 17:48:43,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:48:43,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:48:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:48:43,987 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 17:48:43,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:48:43,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768959787] [2024-11-08 17:48:43,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768959787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:48:43,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:48:43,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:48:43,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83469568] [2024-11-08 17:48:43,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:48:43,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:48:43,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:48:43,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:48:43,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:48:44,018 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 17:48:44,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 52 transitions, 308 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:48:44,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:48:44,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 17:48:44,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:48:44,208 INFO L124 PetriNetUnfolderBase]: 480/930 cut-off events. [2024-11-08 17:48:44,209 INFO L125 PetriNetUnfolderBase]: For 1752/1782 co-relation queries the response was YES. [2024-11-08 17:48:44,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2902 conditions, 930 events. 480/930 cut-off events. For 1752/1782 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4801 event pairs, 188 based on Foata normal form. 32/807 useless extension candidates. Maximal degree in co-relation 808. Up to 684 conditions per place. [2024-11-08 17:48:44,218 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 47 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2024-11-08 17:48:44,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 64 transitions, 489 flow [2024-11-08 17:48:44,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:48:44,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:48:44,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-11-08 17:48:44,221 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2024-11-08 17:48:44,221 INFO L175 Difference]: Start difference. First operand has 50 places, 52 transitions, 308 flow. Second operand 4 states and 92 transitions. [2024-11-08 17:48:44,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 64 transitions, 489 flow [2024-11-08 17:48:44,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 64 transitions, 474 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-11-08 17:48:44,230 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 301 flow [2024-11-08 17:48:44,230 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=301, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2024-11-08 17:48:44,231 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 15 predicate places. [2024-11-08 17:48:44,233 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 301 flow [2024-11-08 17:48:44,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:48:44,233 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:48:44,234 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:48:44,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 17:48:44,234 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 17:48:44,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:48:44,235 INFO L85 PathProgramCache]: Analyzing trace with hash 402805499, now seen corresponding path program 1 times [2024-11-08 17:48:44,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:48:44,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842186736] [2024-11-08 17:48:44,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:48:44,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:48:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:48:44,323 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 17:48:44,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:48:44,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842186736] [2024-11-08 17:48:44,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842186736] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:48:44,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721009938] [2024-11-08 17:48:44,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:48:44,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:48:44,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:48:44,326 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:48:44,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:48:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:48:44,395 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:48:44,396 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:48:44,434 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 17:48:44,434 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:48:44,487 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 17:48:44,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721009938] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:48:44,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:48:44,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-08 17:48:44,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736863109] [2024-11-08 17:48:44,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:48:44,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:48:44,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:48:44,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:48:44,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:48:44,515 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-11-08 17:48:44,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 301 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 17:48:44,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:48:44,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-11-08 17:48:44,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:48:44,745 INFO L124 PetriNetUnfolderBase]: 670/1231 cut-off events. [2024-11-08 17:48:44,745 INFO L125 PetriNetUnfolderBase]: For 1930/2012 co-relation queries the response was YES. [2024-11-08 17:48:44,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3610 conditions, 1231 events. 670/1231 cut-off events. For 1930/2012 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6867 event pairs, 140 based on Foata normal form. 29/1102 useless extension candidates. Maximal degree in co-relation 1693. Up to 754 conditions per place. [2024-11-08 17:48:44,756 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 45 selfloop transitions, 7 changer transitions 0/64 dead transitions. [2024-11-08 17:48:44,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 64 transitions, 459 flow [2024-11-08 17:48:44,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:48:44,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:48:44,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2024-11-08 17:48:44,759 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5592105263157895 [2024-11-08 17:48:44,759 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 301 flow. Second operand 4 states and 85 transitions. [2024-11-08 17:48:44,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 64 transitions, 459 flow [2024-11-08 17:48:44,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 64 transitions, 449 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 17:48:44,766 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 278 flow [2024-11-08 17:48:44,766 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=278, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2024-11-08 17:48:44,767 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 15 predicate places. [2024-11-08 17:48:44,769 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 278 flow [2024-11-08 17:48:44,769 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 17:48:44,769 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:48:44,770 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:48:44,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 17:48:44,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:48:44,974 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 17:48:44,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:48:44,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1462175674, now seen corresponding path program 1 times [2024-11-08 17:48:44,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:48:44,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828395062] [2024-11-08 17:48:44,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:48:44,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:48:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:48:45,082 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 17:48:45,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:48:45,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828395062] [2024-11-08 17:48:45,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828395062] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:48:45,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492673422] [2024-11-08 17:48:45,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:48:45,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:48:45,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:48:45,085 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:48:45,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:48:45,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:48:45,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 17:48:45,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:48:45,244 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 17:48:45,245 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:48:45,319 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 17:48:45,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492673422] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:48:45,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:48:45,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-08 17:48:45,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838340141] [2024-11-08 17:48:45,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:48:45,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 17:48:45,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:48:45,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 17:48:45,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:48:45,367 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-11-08 17:48:45,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 278 flow. Second operand has 9 states, 9 states have (on average 19.22222222222222) internal successors, (173), 9 states have internal predecessors, (173), 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 17:48:45,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:48:45,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-11-08 17:48:45,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:48:45,702 INFO L124 PetriNetUnfolderBase]: 395/1032 cut-off events. [2024-11-08 17:48:45,703 INFO L125 PetriNetUnfolderBase]: For 2266/2312 co-relation queries the response was YES. [2024-11-08 17:48:45,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2661 conditions, 1032 events. 395/1032 cut-off events. For 2266/2312 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6610 event pairs, 17 based on Foata normal form. 78/1040 useless extension candidates. Maximal degree in co-relation 970. Up to 185 conditions per place. [2024-11-08 17:48:45,711 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 52 selfloop transitions, 18 changer transitions 0/87 dead transitions. [2024-11-08 17:48:45,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 87 transitions, 549 flow [2024-11-08 17:48:45,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 17:48:45,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-08 17:48:45,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-11-08 17:48:45,713 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.652046783625731 [2024-11-08 17:48:45,713 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 278 flow. Second operand 9 states and 223 transitions. [2024-11-08 17:48:45,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 87 transitions, 549 flow [2024-11-08 17:48:45,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 87 transitions, 529 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-08 17:48:45,718 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 326 flow [2024-11-08 17:48:45,719 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=326, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-11-08 17:48:45,719 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 19 predicate places. [2024-11-08 17:48:45,719 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 326 flow [2024-11-08 17:48:45,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.22222222222222) internal successors, (173), 9 states have internal predecessors, (173), 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 17:48:45,720 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:48:45,720 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-08 17:48:45,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 17:48:45,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:48:45,921 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 17:48:45,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:48:45,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1604752608, now seen corresponding path program 1 times [2024-11-08 17:48:45,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:48:45,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300048539] [2024-11-08 17:48:45,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:48:45,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:48:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:48:45,985 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 17:48:45,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:48:45,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300048539] [2024-11-08 17:48:45,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300048539] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:48:45,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427216322] [2024-11-08 17:48:45,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:48:45,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:48:45,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:48:45,989 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:48:45,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:48:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:48:46,046 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 17:48:46,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:48:46,094 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 17:48:46,094 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:48:46,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427216322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:48:46,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:48:46,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-08 17:48:46,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106474118] [2024-11-08 17:48:46,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:48:46,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:48:46,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:48:46,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:48:46,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:48:46,123 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-11-08 17:48:46,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 326 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 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 17:48:46,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:48:46,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-11-08 17:48:46,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:48:46,398 INFO L124 PetriNetUnfolderBase]: 537/1183 cut-off events. [2024-11-08 17:48:46,398 INFO L125 PetriNetUnfolderBase]: For 2530/2552 co-relation queries the response was YES. [2024-11-08 17:48:46,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3397 conditions, 1183 events. 537/1183 cut-off events. For 2530/2552 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7377 event pairs, 65 based on Foata normal form. 36/1099 useless extension candidates. Maximal degree in co-relation 1330. Up to 312 conditions per place. [2024-11-08 17:48:46,407 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 73 selfloop transitions, 6 changer transitions 0/92 dead transitions. [2024-11-08 17:48:46,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 92 transitions, 786 flow [2024-11-08 17:48:46,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:48:46,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 17:48:46,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-11-08 17:48:46,408 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5789473684210527 [2024-11-08 17:48:46,408 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 326 flow. Second operand 6 states and 132 transitions. [2024-11-08 17:48:46,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 92 transitions, 786 flow [2024-11-08 17:48:46,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 92 transitions, 710 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-11-08 17:48:46,413 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 292 flow [2024-11-08 17:48:46,413 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=292, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-11-08 17:48:46,414 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2024-11-08 17:48:46,414 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 292 flow [2024-11-08 17:48:46,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 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 17:48:46,415 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:48:46,415 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-08 17:48:46,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 17:48:46,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:48:46,616 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 17:48:46,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:48:46,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1792276393, now seen corresponding path program 1 times [2024-11-08 17:48:46,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:48:46,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928881586] [2024-11-08 17:48:46,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:48:46,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:48:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:48:46,673 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 17:48:46,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:48:46,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928881586] [2024-11-08 17:48:46,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928881586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:48:46,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484648524] [2024-11-08 17:48:46,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:48:46,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:48:46,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:48:46,676 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:48:46,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 17:48:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:48:46,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 17:48:46,728 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:48:46,763 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 17:48:46,763 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:48:46,816 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 17:48:46,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484648524] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:48:46,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:48:46,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-08 17:48:46,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371451657] [2024-11-08 17:48:46,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:48:46,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 17:48:46,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:48:46,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 17:48:46,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-08 17:48:46,892 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-11-08 17:48:46,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 292 flow. Second operand has 12 states, 12 states have (on average 15.666666666666666) internal successors, (188), 12 states have internal predecessors, (188), 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 17:48:46,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:48:46,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-11-08 17:48:46,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:48:47,424 INFO L124 PetriNetUnfolderBase]: 1185/2533 cut-off events. [2024-11-08 17:48:47,424 INFO L125 PetriNetUnfolderBase]: For 4617/4659 co-relation queries the response was YES. [2024-11-08 17:48:47,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7242 conditions, 2533 events. 1185/2533 cut-off events. For 4617/4659 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 16363 event pairs, 216 based on Foata normal form. 108/2441 useless extension candidates. Maximal degree in co-relation 2978. Up to 763 conditions per place. [2024-11-08 17:48:47,443 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 132 selfloop transitions, 12 changer transitions 0/157 dead transitions. [2024-11-08 17:48:47,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 157 transitions, 1272 flow [2024-11-08 17:48:47,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 17:48:47,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 17:48:47,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 232 transitions. [2024-11-08 17:48:47,445 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6105263157894737 [2024-11-08 17:48:47,445 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 292 flow. Second operand 10 states and 232 transitions. [2024-11-08 17:48:47,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 157 transitions, 1272 flow [2024-11-08 17:48:47,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 157 transitions, 1244 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-11-08 17:48:47,453 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 358 flow [2024-11-08 17:48:47,453 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=358, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2024-11-08 17:48:47,454 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 27 predicate places. [2024-11-08 17:48:47,454 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 358 flow [2024-11-08 17:48:47,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.666666666666666) internal successors, (188), 12 states have internal predecessors, (188), 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 17:48:47,455 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:48:47,455 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:48:47,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 17:48:47,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 17:48:47,655 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 17:48:47,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:48:47,656 INFO L85 PathProgramCache]: Analyzing trace with hash -951752184, now seen corresponding path program 1 times [2024-11-08 17:48:47,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:48:47,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153075039] [2024-11-08 17:48:47,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:48:47,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:48:47,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:48:47,721 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 17:48:47,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:48:47,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153075039] [2024-11-08 17:48:47,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153075039] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:48:47,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314873610] [2024-11-08 17:48:47,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:48:47,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:48:47,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:48:47,724 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:48:47,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 17:48:47,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:48:47,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 17:48:47,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:48:47,829 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 17:48:47,829 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:48:47,891 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 17:48:47,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314873610] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:48:47,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:48:47,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-08 17:48:47,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582695263] [2024-11-08 17:48:47,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:48:47,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 17:48:47,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:48:47,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 17:48:47,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:48:47,894 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-11-08 17:48:47,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 358 flow. Second operand has 9 states, 9 states have (on average 20.0) internal successors, (180), 9 states have internal predecessors, (180), 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 17:48:47,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:48:47,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-11-08 17:48:47,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:48:48,372 INFO L124 PetriNetUnfolderBase]: 1028/2550 cut-off events. [2024-11-08 17:48:48,372 INFO L125 PetriNetUnfolderBase]: For 5987/6069 co-relation queries the response was YES. [2024-11-08 17:48:48,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7246 conditions, 2550 events. 1028/2550 cut-off events. For 5987/6069 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 18008 event pairs, 72 based on Foata normal form. 184/2525 useless extension candidates. Maximal degree in co-relation 4611. Up to 458 conditions per place. [2024-11-08 17:48:48,396 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 80 selfloop transitions, 22 changer transitions 0/121 dead transitions. [2024-11-08 17:48:48,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 121 transitions, 903 flow [2024-11-08 17:48:48,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:48:48,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-08 17:48:48,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-11-08 17:48:48,398 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6842105263157895 [2024-11-08 17:48:48,398 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 358 flow. Second operand 8 states and 208 transitions. [2024-11-08 17:48:48,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 121 transitions, 903 flow [2024-11-08 17:48:48,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 121 transitions, 874 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-11-08 17:48:48,408 INFO L231 Difference]: Finished difference. Result has 72 places, 67 transitions, 509 flow [2024-11-08 17:48:48,408 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=509, PETRI_PLACES=72, PETRI_TRANSITIONS=67} [2024-11-08 17:48:48,408 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 34 predicate places. [2024-11-08 17:48:48,409 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 67 transitions, 509 flow [2024-11-08 17:48:48,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.0) internal successors, (180), 9 states have internal predecessors, (180), 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 17:48:48,410 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:48:48,410 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:48:48,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 17:48:48,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 17:48:48,610 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 17:48:48,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:48:48,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1698256624, now seen corresponding path program 1 times [2024-11-08 17:48:48,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:48:48,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766587136] [2024-11-08 17:48:48,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:48:48,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:48:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:48:48,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:48:48,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:48:48,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766587136] [2024-11-08 17:48:48,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766587136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:48:48,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:48:48,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:48:48,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180185976] [2024-11-08 17:48:48,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:48:48,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:48:48,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:48:48,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:48:48,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:48:48,706 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 17:48:48,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 67 transitions, 509 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 17:48:48,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:48:48,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 17:48:48,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:48:49,181 INFO L124 PetriNetUnfolderBase]: 1518/3270 cut-off events. [2024-11-08 17:48:49,181 INFO L125 PetriNetUnfolderBase]: For 9194/9311 co-relation queries the response was YES. [2024-11-08 17:48:49,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10129 conditions, 3270 events. 1518/3270 cut-off events. For 9194/9311 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 22105 event pairs, 905 based on Foata normal form. 74/3148 useless extension candidates. Maximal degree in co-relation 7084. Up to 2206 conditions per place. [2024-11-08 17:48:49,205 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 59 selfloop transitions, 9 changer transitions 0/85 dead transitions. [2024-11-08 17:48:49,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 85 transitions, 783 flow [2024-11-08 17:48:49,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:48:49,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:48:49,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2024-11-08 17:48:49,207 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5723684210526315 [2024-11-08 17:48:49,207 INFO L175 Difference]: Start difference. First operand has 72 places, 67 transitions, 509 flow. Second operand 4 states and 87 transitions. [2024-11-08 17:48:49,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 85 transitions, 783 flow [2024-11-08 17:48:49,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 85 transitions, 754 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-11-08 17:48:49,221 INFO L231 Difference]: Finished difference. Result has 74 places, 67 transitions, 523 flow [2024-11-08 17:48:49,221 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=523, PETRI_PLACES=74, PETRI_TRANSITIONS=67} [2024-11-08 17:48:49,222 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 36 predicate places. [2024-11-08 17:48:49,222 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 67 transitions, 523 flow [2024-11-08 17:48:49,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 17:48:49,223 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:48:49,223 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:48:49,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 17:48:49,223 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 17:48:49,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:48:49,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1559153275, now seen corresponding path program 1 times [2024-11-08 17:48:49,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:48:49,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793886594] [2024-11-08 17:48:49,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:48:49,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:48:49,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:48:49,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:48:49,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:48:49,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793886594] [2024-11-08 17:48:49,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793886594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:48:49,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:48:49,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 17:48:49,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104663914] [2024-11-08 17:48:49,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:48:49,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:48:49,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:48:49,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:48:49,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:48:49,298 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-11-08 17:48:49,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 67 transitions, 523 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 17:48:49,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:48:49,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-11-08 17:48:49,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:48:49,701 INFO L124 PetriNetUnfolderBase]: 978/2468 cut-off events. [2024-11-08 17:48:49,701 INFO L125 PetriNetUnfolderBase]: For 6907/6985 co-relation queries the response was YES. [2024-11-08 17:48:49,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7624 conditions, 2468 events. 978/2468 cut-off events. For 6907/6985 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 17576 event pairs, 558 based on Foata normal form. 22/2382 useless extension candidates. Maximal degree in co-relation 5305. Up to 1504 conditions per place. [2024-11-08 17:48:49,727 INFO L140 encePairwiseOnDemand]: 36/38 looper letters, 48 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2024-11-08 17:48:49,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 66 transitions, 619 flow [2024-11-08 17:48:49,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:48:49,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:48:49,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-11-08 17:48:49,728 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.543859649122807 [2024-11-08 17:48:49,729 INFO L175 Difference]: Start difference. First operand has 74 places, 67 transitions, 523 flow. Second operand 3 states and 62 transitions. [2024-11-08 17:48:49,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 66 transitions, 619 flow [2024-11-08 17:48:49,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 66 transitions, 601 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 17:48:49,744 INFO L231 Difference]: Finished difference. Result has 72 places, 66 transitions, 505 flow [2024-11-08 17:48:49,744 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=505, PETRI_PLACES=72, PETRI_TRANSITIONS=66} [2024-11-08 17:48:49,745 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 34 predicate places. [2024-11-08 17:48:49,746 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 66 transitions, 505 flow [2024-11-08 17:48:49,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 17:48:49,746 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:48:49,746 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:48:49,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 17:48:49,747 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 17:48:49,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:48:49,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1766958423, now seen corresponding path program 1 times [2024-11-08 17:48:49,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:48:49,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783405402] [2024-11-08 17:48:49,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:48:49,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:48:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:48:49,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:48:49,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:48:49,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783405402] [2024-11-08 17:48:49,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783405402] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:48:49,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408944091] [2024-11-08 17:48:49,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:48:49,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:48:49,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:48:49,892 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:48:49,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 17:48:49,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:48:49,953 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:48:49,954 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:48:50,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:48:50,127 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:48:50,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408944091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:48:50,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:48:50,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-08 17:48:50,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394615486] [2024-11-08 17:48:50,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:48:50,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:48:50,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:48:50,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:48:50,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:48:50,152 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-08 17:48:50,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 66 transitions, 505 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 17:48:50,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:48:50,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-08 17:48:50,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:48:50,478 INFO L124 PetriNetUnfolderBase]: 978/2446 cut-off events. [2024-11-08 17:48:50,478 INFO L125 PetriNetUnfolderBase]: For 6538/6616 co-relation queries the response was YES. [2024-11-08 17:48:50,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7508 conditions, 2446 events. 978/2446 cut-off events. For 6538/6616 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 17212 event pairs, 558 based on Foata normal form. 22/2360 useless extension candidates. Maximal degree in co-relation 7482. Up to 1482 conditions per place. [2024-11-08 17:48:50,496 INFO L140 encePairwiseOnDemand]: 36/38 looper letters, 41 selfloop transitions, 1 changer transitions 7/65 dead transitions. [2024-11-08 17:48:50,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 65 transitions, 599 flow [2024-11-08 17:48:50,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:48:50,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:48:50,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2024-11-08 17:48:50,497 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5614035087719298 [2024-11-08 17:48:50,497 INFO L175 Difference]: Start difference. First operand has 72 places, 66 transitions, 505 flow. Second operand 3 states and 64 transitions. [2024-11-08 17:48:50,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 65 transitions, 599 flow [2024-11-08 17:48:50,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 65 transitions, 598 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:48:50,512 INFO L231 Difference]: Finished difference. Result has 72 places, 58 transitions, 476 flow [2024-11-08 17:48:50,512 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=476, PETRI_PLACES=72, PETRI_TRANSITIONS=58} [2024-11-08 17:48:50,512 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 34 predicate places. [2024-11-08 17:48:50,513 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 58 transitions, 476 flow [2024-11-08 17:48:50,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 17:48:50,513 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:48:50,513 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1] [2024-11-08 17:48:50,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 17:48:50,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-08 17:48:50,715 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 17:48:50,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:48:50,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1547705716, now seen corresponding path program 1 times [2024-11-08 17:48:50,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:48:50,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028191457] [2024-11-08 17:48:50,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:48:50,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:48:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:48:50,812 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 17:48:50,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:48:50,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028191457] [2024-11-08 17:48:50,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028191457] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:48:50,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998516699] [2024-11-08 17:48:50,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:48:50,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:48:50,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:48:50,815 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:48:50,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 17:48:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:48:50,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 17:48:50,879 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:48:50,935 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 17:48:50,936 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:48:51,043 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 17:48:51,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998516699] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:48:51,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:48:51,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-08 17:48:51,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489883482] [2024-11-08 17:48:51,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:48:51,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 17:48:51,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:48:51,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 17:48:51,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-08 17:48:51,046 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-11-08 17:48:51,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 58 transitions, 476 flow. Second operand has 13 states, 13 states have (on average 19.153846153846153) internal successors, (249), 13 states have internal predecessors, (249), 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 17:48:51,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:48:51,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-11-08 17:48:51,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:48:51,696 INFO L124 PetriNetUnfolderBase]: 1298/3513 cut-off events. [2024-11-08 17:48:51,696 INFO L125 PetriNetUnfolderBase]: For 11184/11374 co-relation queries the response was YES. [2024-11-08 17:48:51,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10879 conditions, 3513 events. 1298/3513 cut-off events. For 11184/11374 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 25441 event pairs, 67 based on Foata normal form. 90/3493 useless extension candidates. Maximal degree in co-relation 10852. Up to 423 conditions per place. [2024-11-08 17:48:51,725 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 96 selfloop transitions, 57 changer transitions 0/169 dead transitions. [2024-11-08 17:48:51,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 169 transitions, 1533 flow [2024-11-08 17:48:51,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 17:48:51,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-08 17:48:51,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 326 transitions. [2024-11-08 17:48:51,728 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.659919028340081 [2024-11-08 17:48:51,728 INFO L175 Difference]: Start difference. First operand has 72 places, 58 transitions, 476 flow. Second operand 13 states and 326 transitions. [2024-11-08 17:48:51,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 169 transitions, 1533 flow [2024-11-08 17:48:51,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 169 transitions, 1532 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:48:51,749 INFO L231 Difference]: Finished difference. Result has 88 places, 99 transitions, 1161 flow [2024-11-08 17:48:51,750 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1161, PETRI_PLACES=88, PETRI_TRANSITIONS=99} [2024-11-08 17:48:51,750 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 50 predicate places. [2024-11-08 17:48:51,751 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 99 transitions, 1161 flow [2024-11-08 17:48:51,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 19.153846153846153) internal successors, (249), 13 states have internal predecessors, (249), 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 17:48:51,751 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:48:51,751 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 1, 1, 1, 1] [2024-11-08 17:48:51,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 17:48:51,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:48:51,952 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 17:48:51,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:48:51,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1226757879, now seen corresponding path program 2 times [2024-11-08 17:48:51,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:48:51,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596235810] [2024-11-08 17:48:51,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:48:51,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:48:51,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:48:52,160 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 17:48:52,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:48:52,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596235810] [2024-11-08 17:48:52,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596235810] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:48:52,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075669747] [2024-11-08 17:48:52,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:48:52,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:48:52,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:48:52,164 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:48:52,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 17:48:52,220 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 17:48:52,221 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:48:52,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:48:52,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:48:52,307 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 17:48:52,307 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:48:52,378 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 17:48:52,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075669747] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:48:52,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:48:52,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-11-08 17:48:52,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140124730] [2024-11-08 17:48:52,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:48:52,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 17:48:52,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:48:52,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 17:48:52,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-08 17:48:52,436 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-08 17:48:52,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 99 transitions, 1161 flow. Second operand has 15 states, 15 states have (on average 12.733333333333333) internal successors, (191), 15 states have internal predecessors, (191), 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 17:48:52,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:48:52,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-08 17:48:52,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:48:54,126 INFO L124 PetriNetUnfolderBase]: 4758/8707 cut-off events. [2024-11-08 17:48:54,126 INFO L125 PetriNetUnfolderBase]: For 39472/39606 co-relation queries the response was YES. [2024-11-08 17:48:54,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29980 conditions, 8707 events. 4758/8707 cut-off events. For 39472/39606 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 60904 event pairs, 360 based on Foata normal form. 294/8313 useless extension candidates. Maximal degree in co-relation 29943. Up to 2405 conditions per place. [2024-11-08 17:48:54,180 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 333 selfloop transitions, 15 changer transitions 11/365 dead transitions. [2024-11-08 17:48:54,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 365 transitions, 4938 flow [2024-11-08 17:48:54,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 17:48:54,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-08 17:48:54,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 276 transitions. [2024-11-08 17:48:54,182 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-11-08 17:48:54,182 INFO L175 Difference]: Start difference. First operand has 88 places, 99 transitions, 1161 flow. Second operand 15 states and 276 transitions. [2024-11-08 17:48:54,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 365 transitions, 4938 flow [2024-11-08 17:48:54,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 365 transitions, 4714 flow, removed 91 selfloop flow, removed 6 redundant places. [2024-11-08 17:48:54,234 INFO L231 Difference]: Finished difference. Result has 96 places, 99 transitions, 1126 flow [2024-11-08 17:48:54,234 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1126, PETRI_PLACES=96, PETRI_TRANSITIONS=99} [2024-11-08 17:48:54,235 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 58 predicate places. [2024-11-08 17:48:54,235 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 99 transitions, 1126 flow [2024-11-08 17:48:54,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 12.733333333333333) internal successors, (191), 15 states have internal predecessors, (191), 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 17:48:54,236 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:48:54,236 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1] [2024-11-08 17:48:54,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-08 17:48:54,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:48:54,441 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 17:48:54,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:48:54,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1981302056, now seen corresponding path program 2 times [2024-11-08 17:48:54,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:48:54,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159391484] [2024-11-08 17:48:54,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:48:54,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:48:54,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:48:54,719 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 17:48:54,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:48:54,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159391484] [2024-11-08 17:48:54,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159391484] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:48:54,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498794187] [2024-11-08 17:48:54,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:48:54,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:48:54,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:48:54,722 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:48:54,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 17:48:54,798 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:48:54,799 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:48:54,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-08 17:48:54,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:48:54,921 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 17:48:54,921 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:48:55,268 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 17:48:55,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498794187] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:48:55,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:48:55,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-08 17:48:55,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609628622] [2024-11-08 17:48:55,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:48:55,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 17:48:55,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:48:55,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 17:48:55,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-08 17:48:55,273 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-11-08 17:48:55,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 99 transitions, 1126 flow. Second operand has 25 states, 25 states have (on average 19.08) internal successors, (477), 25 states have internal predecessors, (477), 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 17:48:55,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:48:55,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-11-08 17:48:55,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:48:57,061 INFO L124 PetriNetUnfolderBase]: 3203/8876 cut-off events. [2024-11-08 17:48:57,061 INFO L125 PetriNetUnfolderBase]: For 58043/58549 co-relation queries the response was YES. [2024-11-08 17:48:57,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30705 conditions, 8876 events. 3203/8876 cut-off events. For 58043/58549 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 71225 event pairs, 163 based on Foata normal form. 198/8716 useless extension candidates. Maximal degree in co-relation 30671. Up to 1433 conditions per place. [2024-11-08 17:48:57,138 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 176 selfloop transitions, 229 changer transitions 0/420 dead transitions. [2024-11-08 17:48:57,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 420 transitions, 4818 flow [2024-11-08 17:48:57,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-08 17:48:57,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-08 17:48:57,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 638 transitions. [2024-11-08 17:48:57,143 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.671578947368421 [2024-11-08 17:48:57,143 INFO L175 Difference]: Start difference. First operand has 96 places, 99 transitions, 1126 flow. Second operand 25 states and 638 transitions. [2024-11-08 17:48:57,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 420 transitions, 4818 flow [2024-11-08 17:48:57,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 420 transitions, 4620 flow, removed 31 selfloop flow, removed 13 redundant places. [2024-11-08 17:48:57,216 INFO L231 Difference]: Finished difference. Result has 127 places, 273 transitions, 4214 flow [2024-11-08 17:48:57,217 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1076, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=4214, PETRI_PLACES=127, PETRI_TRANSITIONS=273} [2024-11-08 17:48:57,217 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 89 predicate places. [2024-11-08 17:48:57,218 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 273 transitions, 4214 flow [2024-11-08 17:48:57,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 19.08) internal successors, (477), 25 states have internal predecessors, (477), 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 17:48:57,218 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:48:57,218 INFO L204 CegarLoopForPetriNet]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1, 1, 1] [2024-11-08 17:48:57,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 17:48:57,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-08 17:48:57,423 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 17:48:57,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:48:57,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1236512864, now seen corresponding path program 3 times [2024-11-08 17:48:57,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:48:57,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357312740] [2024-11-08 17:48:57,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:48:57,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:48:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:48:58,403 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 17:48:58,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:48:58,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357312740] [2024-11-08 17:48:58,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357312740] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:48:58,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793030230] [2024-11-08 17:48:58,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:48:58,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:48:58,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:48:58,407 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:48:58,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 17:48:58,518 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-11-08 17:48:58,519 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:48:58,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-08 17:48:58,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:48:58,778 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 17:48:58,778 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:48:59,828 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 17:48:59,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793030230] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:48:59,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:48:59,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2024-11-08 17:48:59,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511970597] [2024-11-08 17:48:59,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:48:59,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-08 17:48:59,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:48:59,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-08 17:48:59,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-08 17:48:59,836 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-11-08 17:48:59,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 273 transitions, 4214 flow. Second operand has 49 states, 49 states have (on average 19.040816326530614) internal successors, (933), 49 states have internal predecessors, (933), 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 17:48:59,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:48:59,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-11-08 17:48:59,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:49:06,448 INFO L124 PetriNetUnfolderBase]: 9149/25580 cut-off events. [2024-11-08 17:49:06,448 INFO L125 PetriNetUnfolderBase]: For 391482/391672 co-relation queries the response was YES. [2024-11-08 17:49:06,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87010 conditions, 25580 events. 9149/25580 cut-off events. For 391482/391672 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 221277 event pairs, 679 based on Foata normal form. 414/24762 useless extension candidates. Maximal degree in co-relation 86956. Up to 3939 conditions per place. [2024-11-08 17:49:06,832 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 322 selfloop transitions, 869 changer transitions 0/1206 dead transitions. [2024-11-08 17:49:06,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 1206 transitions, 17632 flow [2024-11-08 17:49:06,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-08 17:49:06,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-11-08 17:49:06,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 1262 transitions. [2024-11-08 17:49:06,836 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.677765843179377 [2024-11-08 17:49:06,836 INFO L175 Difference]: Start difference. First operand has 127 places, 273 transitions, 4214 flow. Second operand 49 states and 1262 transitions. [2024-11-08 17:49:06,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 1206 transitions, 17632 flow [2024-11-08 17:49:07,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 1206 transitions, 15578 flow, removed 996 selfloop flow, removed 5 redundant places. [2024-11-08 17:49:07,100 INFO L231 Difference]: Finished difference. Result has 215 places, 915 transitions, 15649 flow [2024-11-08 17:49:07,101 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3928, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=15649, PETRI_PLACES=215, PETRI_TRANSITIONS=915} [2024-11-08 17:49:07,101 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 177 predicate places. [2024-11-08 17:49:07,101 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 915 transitions, 15649 flow [2024-11-08 17:49:07,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 19.040816326530614) internal successors, (933), 49 states have internal predecessors, (933), 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 17:49:07,102 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:49:07,103 INFO L204 CegarLoopForPetriNet]: trace histogram [47, 47, 46, 46, 46, 46, 1, 1, 1, 1] [2024-11-08 17:49:07,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 17:49:07,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 17:49:07,305 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-08 17:49:07,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:49:07,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1743184176, now seen corresponding path program 4 times [2024-11-08 17:49:07,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:49:07,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218112516] [2024-11-08 17:49:07,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:49:07,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:49:07,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:49:10,098 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 17:49:10,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:49:10,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218112516] [2024-11-08 17:49:10,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218112516] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:49:10,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242961419] [2024-11-08 17:49:10,099 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 17:49:10,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:49:10,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:49:10,101 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:49:10,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c66cd09-258e-4789-8d2a-dec5b71eac85/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 17:49:10,257 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 17:49:10,257 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:49:10,260 INFO L255 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-08 17:49:10,267 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:49:10,734 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 17:49:10,734 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:49:14,142 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 17:49:14,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242961419] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:49:14,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:49:14,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 95 [2024-11-08 17:49:14,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112451344] [2024-11-08 17:49:14,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:49:14,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-08 17:49:14,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:49:14,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-08 17:49:14,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-08 17:49:14,155 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-11-08 17:49:14,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 915 transitions, 15649 flow. Second operand has 97 states, 97 states have (on average 19.02061855670103) internal successors, (1845), 97 states have internal predecessors, (1845), 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 17:49:14,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:49:14,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-11-08 17:49:14,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand