./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c05505-a700-4684-99e6-cfe668631ffb/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c05505-a700-4684-99e6-cfe668631ffb/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c05505-a700-4684-99e6-cfe668631ffb/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c05505-a700-4684-99e6-cfe668631ffb/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c05505-a700-4684-99e6-cfe668631ffb/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c05505-a700-4684-99e6-cfe668631ffb/bin/uautomizer-verify-BQ2R08f2Ya --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 58f1358e24877c92a149b6121e272e93974801203e91da3c444aa78d712ada40 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:19:33,929 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:19:33,991 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c05505-a700-4684-99e6-cfe668631ffb/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 06:19:33,995 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:19:33,995 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:19:34,017 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:19:34,018 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:19:34,018 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:19:34,019 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:19:34,019 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:19:34,020 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:19:34,020 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:19:34,021 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:19:34,022 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:19:34,022 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:19:34,023 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:19:34,023 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:19:34,024 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:19:34,024 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:19:34,024 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:19:34,025 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:19:34,025 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:19:34,026 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:19:34,026 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:19:34,027 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 06:19:34,027 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 06:19:34,027 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:19:34,028 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:19:34,028 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:19:34,029 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:19:34,029 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:19:34,029 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:19:34,030 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:19:34,030 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:19:34,031 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:19:34,031 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:19:34,031 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:19:34,032 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:19:34,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:19:34,032 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:19:34,033 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:19:34,033 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:19:34,033 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:19:34,034 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:19:34,034 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_71c05505-a700-4684-99e6-cfe668631ffb/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c05505-a700-4684-99e6-cfe668631ffb/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58f1358e24877c92a149b6121e272e93974801203e91da3c444aa78d712ada40 [2023-11-29 06:19:34,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:19:34,305 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:19:34,308 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:19:34,309 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:19:34,309 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:19:34,311 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c05505-a700-4684-99e6-cfe668631ffb/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c [2023-11-29 06:19:37,004 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:19:37,217 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:19:37,217 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c05505-a700-4684-99e6-cfe668631ffb/sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c [2023-11-29 06:19:37,224 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c05505-a700-4684-99e6-cfe668631ffb/bin/uautomizer-verify-BQ2R08f2Ya/data/6daebd65d/79bae8b7849a41e39778ef6b8212d186/FLAG23e7f00a5 [2023-11-29 06:19:37,237 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c05505-a700-4684-99e6-cfe668631ffb/bin/uautomizer-verify-BQ2R08f2Ya/data/6daebd65d/79bae8b7849a41e39778ef6b8212d186 [2023-11-29 06:19:37,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:19:37,241 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:19:37,242 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:19:37,243 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:19:37,247 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:19:37,248 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:19:37" (1/1) ... [2023-11-29 06:19:37,248 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e557756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:19:37, skipping insertion in model container [2023-11-29 06:19:37,248 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:19:37" (1/1) ... [2023-11-29 06:19:37,268 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:19:37,417 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:19:37,428 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:19:37,452 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:19:37,465 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:19:37,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:19:37 WrapperNode [2023-11-29 06:19:37,466 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:19:37,467 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:19:37,467 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:19:37,467 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:19:37,473 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:19:37" (1/1) ... [2023-11-29 06:19:37,480 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:19:37" (1/1) ... [2023-11-29 06:19:37,510 INFO L138 Inliner]: procedures = 23, calls = 32, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 219 [2023-11-29 06:19:37,510 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:19:37,511 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:19:37,511 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:19:37,511 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:19:37,520 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:19:37" (1/1) ... [2023-11-29 06:19:37,520 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:19:37" (1/1) ... [2023-11-29 06:19:37,523 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:19:37" (1/1) ... [2023-11-29 06:19:37,540 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-11-29 06:19:37,541 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:19:37" (1/1) ... [2023-11-29 06:19:37,541 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:19:37" (1/1) ... [2023-11-29 06:19:37,549 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:19:37" (1/1) ... [2023-11-29 06:19:37,552 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:19:37" (1/1) ... [2023-11-29 06:19:37,554 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:19:37" (1/1) ... [2023-11-29 06:19:37,556 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:19:37" (1/1) ... [2023-11-29 06:19:37,560 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:19:37,561 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:19:37,561 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:19:37,562 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:19:37,562 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:19:37" (1/1) ... [2023-11-29 06:19:37,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:19:37,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c05505-a700-4684-99e6-cfe668631ffb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:19:37,594 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c05505-a700-4684-99e6-cfe668631ffb/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:19:37,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c05505-a700-4684-99e6-cfe668631ffb/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:19:37,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:19:37,625 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 06:19:37,625 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 06:19:37,625 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 06:19:37,625 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 06:19:37,625 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 06:19:37,625 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 06:19:37,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:19:37,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 06:19:37,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 06:19:37,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 06:19:37,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 06:19:37,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 06:19:37,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 06:19:37,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 06:19:37,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 06:19:37,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:19:37,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:19:37,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 06:19:37,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 06:19:37,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 06:19:37,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 06:19:37,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 06:19:37,629 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 06:19:37,742 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:19:37,744 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:19:38,106 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:19:38,377 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:19:38,378 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 06:19:38,378 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:19:38 BoogieIcfgContainer [2023-11-29 06:19:38,378 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:19:38,380 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:19:38,380 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:19:38,383 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:19:38,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:19:37" (1/3) ... [2023-11-29 06:19:38,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a7acb28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:19:38, skipping insertion in model container [2023-11-29 06:19:38,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:19:37" (2/3) ... [2023-11-29 06:19:38,384 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a7acb28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:19:38, skipping insertion in model container [2023-11-29 06:19:38,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:19:38" (3/3) ... [2023-11-29 06:19:38,385 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-subst.wvr.c [2023-11-29 06:19:38,393 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 06:19:38,400 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:19:38,401 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-29 06:19:38,401 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 06:19:38,465 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 06:19:38,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 91 transitions, 203 flow [2023-11-29 06:19:38,534 INFO L124 PetriNetUnfolderBase]: 12/88 cut-off events. [2023-11-29 06:19:38,534 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 06:19:38,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 88 events. 12/88 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 329 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2023-11-29 06:19:38,539 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 91 transitions, 203 flow [2023-11-29 06:19:38,543 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 86 transitions, 187 flow [2023-11-29 06:19:38,553 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:19:38,560 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@40365b94, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:19:38,560 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2023-11-29 06:19:38,568 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 06:19:38,569 INFO L124 PetriNetUnfolderBase]: 2/25 cut-off events. [2023-11-29 06:19:38,569 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 06:19:38,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:19:38,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:19:38,570 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 06:19:38,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:19:38,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1594835742, now seen corresponding path program 1 times [2023-11-29 06:19:38,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:19:38,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142223235] [2023-11-29 06:19:38,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:19:38,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:19:38,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:19:38,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:19:38,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:19:38,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142223235] [2023-11-29 06:19:38,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142223235] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:19:38,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:19:38,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:19:38,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725149700] [2023-11-29 06:19:38,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:19:38,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:19:38,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:19:38,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:19:38,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:19:38,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 91 [2023-11-29 06:19:38,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 86 transitions, 187 flow. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:38,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:19:38,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 91 [2023-11-29 06:19:38,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:19:40,769 INFO L124 PetriNetUnfolderBase]: 8842/14139 cut-off events. [2023-11-29 06:19:40,769 INFO L125 PetriNetUnfolderBase]: For 268/268 co-relation queries the response was YES. [2023-11-29 06:19:40,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26276 conditions, 14139 events. 8842/14139 cut-off events. For 268/268 co-relation queries the response was YES. Maximal size of possible extension queue 877. Compared 108202 event pairs, 2984 based on Foata normal form. 364/11829 useless extension candidates. Maximal degree in co-relation 24979. Up to 5967 conditions per place. [2023-11-29 06:19:40,983 INFO L140 encePairwiseOnDemand]: 83/91 looper letters, 88 selfloop transitions, 5 changer transitions 0/135 dead transitions. [2023-11-29 06:19:40,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 135 transitions, 483 flow [2023-11-29 06:19:40,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:19:40,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:19:40,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 276 transitions. [2023-11-29 06:19:40,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7582417582417582 [2023-11-29 06:19:40,998 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 276 transitions. [2023-11-29 06:19:40,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 276 transitions. [2023-11-29 06:19:40,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:19:41,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 276 transitions. [2023-11-29 06:19:41,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:41,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:41,010 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:41,012 INFO L175 Difference]: Start difference. First operand has 84 places, 86 transitions, 187 flow. Second operand 4 states and 276 transitions. [2023-11-29 06:19:41,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 135 transitions, 483 flow [2023-11-29 06:19:41,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 135 transitions, 468 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 06:19:41,044 INFO L231 Difference]: Finished difference. Result has 84 places, 88 transitions, 212 flow [2023-11-29 06:19:41,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=84, PETRI_TRANSITIONS=88} [2023-11-29 06:19:41,049 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 0 predicate places. [2023-11-29 06:19:41,049 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 88 transitions, 212 flow [2023-11-29 06:19:41,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:41,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:19:41,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:19:41,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 06:19:41,051 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 06:19:41,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:19:41,051 INFO L85 PathProgramCache]: Analyzing trace with hash 2099700261, now seen corresponding path program 1 times [2023-11-29 06:19:41,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:19:41,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847837213] [2023-11-29 06:19:41,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:19:41,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:19:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:19:41,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:19:41,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:19:41,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847837213] [2023-11-29 06:19:41,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847837213] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:19:41,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:19:41,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:19:41,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225776329] [2023-11-29 06:19:41,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:19:41,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:19:41,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:19:41,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:19:41,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:19:41,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 06:19:41,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 88 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:41,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:19:41,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 06:19:41,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:19:42,330 INFO L124 PetriNetUnfolderBase]: 6520/11802 cut-off events. [2023-11-29 06:19:42,330 INFO L125 PetriNetUnfolderBase]: For 2345/2363 co-relation queries the response was YES. [2023-11-29 06:19:42,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23072 conditions, 11802 events. 6520/11802 cut-off events. For 2345/2363 co-relation queries the response was YES. Maximal size of possible extension queue 754. Compared 100234 event pairs, 1663 based on Foata normal form. 18/10211 useless extension candidates. Maximal degree in co-relation 12587. Up to 5147 conditions per place. [2023-11-29 06:19:42,413 INFO L140 encePairwiseOnDemand]: 87/91 looper letters, 60 selfloop transitions, 4 changer transitions 0/110 dead transitions. [2023-11-29 06:19:42,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 110 transitions, 387 flow [2023-11-29 06:19:42,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:19:42,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:19:42,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 255 transitions. [2023-11-29 06:19:42,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7005494505494505 [2023-11-29 06:19:42,416 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 255 transitions. [2023-11-29 06:19:42,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 255 transitions. [2023-11-29 06:19:42,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:19:42,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 255 transitions. [2023-11-29 06:19:42,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:42,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:42,422 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:42,422 INFO L175 Difference]: Start difference. First operand has 84 places, 88 transitions, 212 flow. Second operand 4 states and 255 transitions. [2023-11-29 06:19:42,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 110 transitions, 387 flow [2023-11-29 06:19:42,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 110 transitions, 387 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 06:19:42,479 INFO L231 Difference]: Finished difference. Result has 86 places, 87 transitions, 218 flow [2023-11-29 06:19:42,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=86, PETRI_TRANSITIONS=87} [2023-11-29 06:19:42,480 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 2 predicate places. [2023-11-29 06:19:42,480 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 87 transitions, 218 flow [2023-11-29 06:19:42,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:42,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:19:42,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:19:42,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 06:19:42,481 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 06:19:42,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:19:42,482 INFO L85 PathProgramCache]: Analyzing trace with hash -887266595, now seen corresponding path program 1 times [2023-11-29 06:19:42,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:19:42,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386326747] [2023-11-29 06:19:42,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:19:42,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:19:42,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:19:42,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:19:42,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:19:42,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386326747] [2023-11-29 06:19:42,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386326747] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:19:42,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:19:42,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:19:42,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828088005] [2023-11-29 06:19:42,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:19:42,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:19:42,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:19:42,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:19:42,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:19:42,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 91 [2023-11-29 06:19:42,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 87 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:42,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:19:42,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 91 [2023-11-29 06:19:42,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:19:44,123 INFO L124 PetriNetUnfolderBase]: 10964/18394 cut-off events. [2023-11-29 06:19:44,124 INFO L125 PetriNetUnfolderBase]: For 6332/6941 co-relation queries the response was YES. [2023-11-29 06:19:44,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37251 conditions, 18394 events. 10964/18394 cut-off events. For 6332/6941 co-relation queries the response was YES. Maximal size of possible extension queue 1084. Compared 153221 event pairs, 3669 based on Foata normal form. 781/16072 useless extension candidates. Maximal degree in co-relation 21498. Up to 7196 conditions per place. [2023-11-29 06:19:44,269 INFO L140 encePairwiseOnDemand]: 83/91 looper letters, 94 selfloop transitions, 5 changer transitions 0/140 dead transitions. [2023-11-29 06:19:44,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 140 transitions, 576 flow [2023-11-29 06:19:44,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:19:44,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:19:44,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 276 transitions. [2023-11-29 06:19:44,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7582417582417582 [2023-11-29 06:19:44,272 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 276 transitions. [2023-11-29 06:19:44,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 276 transitions. [2023-11-29 06:19:44,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:19:44,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 276 transitions. [2023-11-29 06:19:44,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:44,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:44,276 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:44,277 INFO L175 Difference]: Start difference. First operand has 86 places, 87 transitions, 218 flow. Second operand 4 states and 276 transitions. [2023-11-29 06:19:44,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 140 transitions, 576 flow [2023-11-29 06:19:44,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 140 transitions, 556 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 06:19:44,386 INFO L231 Difference]: Finished difference. Result has 88 places, 89 transitions, 244 flow [2023-11-29 06:19:44,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=244, PETRI_PLACES=88, PETRI_TRANSITIONS=89} [2023-11-29 06:19:44,387 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 4 predicate places. [2023-11-29 06:19:44,388 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 89 transitions, 244 flow [2023-11-29 06:19:44,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:44,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:19:44,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:19:44,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 06:19:44,389 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 06:19:44,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:19:44,389 INFO L85 PathProgramCache]: Analyzing trace with hash 666167590, now seen corresponding path program 1 times [2023-11-29 06:19:44,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:19:44,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207752654] [2023-11-29 06:19:44,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:19:44,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:19:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:19:44,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:19:44,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:19:44,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207752654] [2023-11-29 06:19:44,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207752654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:19:44,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:19:44,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:19:44,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052519101] [2023-11-29 06:19:44,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:19:44,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:19:44,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:19:44,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:19:44,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:19:44,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 91 [2023-11-29 06:19:44,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 89 transitions, 244 flow. Second operand has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:44,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:19:44,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 91 [2023-11-29 06:19:44,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:19:45,650 INFO L124 PetriNetUnfolderBase]: 7912/14684 cut-off events. [2023-11-29 06:19:45,651 INFO L125 PetriNetUnfolderBase]: For 6371/6834 co-relation queries the response was YES. [2023-11-29 06:19:45,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30664 conditions, 14684 events. 7912/14684 cut-off events. For 6371/6834 co-relation queries the response was YES. Maximal size of possible extension queue 896. Compared 131411 event pairs, 2059 based on Foata normal form. 464/13357 useless extension candidates. Maximal degree in co-relation 17715. Up to 6429 conditions per place. [2023-11-29 06:19:45,745 INFO L140 encePairwiseOnDemand]: 87/91 looper letters, 65 selfloop transitions, 4 changer transitions 0/113 dead transitions. [2023-11-29 06:19:45,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 113 transitions, 449 flow [2023-11-29 06:19:45,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:19:45,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:19:45,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 251 transitions. [2023-11-29 06:19:45,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6895604395604396 [2023-11-29 06:19:45,746 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 251 transitions. [2023-11-29 06:19:45,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 251 transitions. [2023-11-29 06:19:45,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:19:45,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 251 transitions. [2023-11-29 06:19:45,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:45,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:45,749 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:45,749 INFO L175 Difference]: Start difference. First operand has 88 places, 89 transitions, 244 flow. Second operand 4 states and 251 transitions. [2023-11-29 06:19:45,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 113 transitions, 449 flow [2023-11-29 06:19:45,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 113 transitions, 449 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 06:19:45,824 INFO L231 Difference]: Finished difference. Result has 90 places, 88 transitions, 248 flow [2023-11-29 06:19:45,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=248, PETRI_PLACES=90, PETRI_TRANSITIONS=88} [2023-11-29 06:19:45,825 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 6 predicate places. [2023-11-29 06:19:45,825 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 88 transitions, 248 flow [2023-11-29 06:19:45,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:45,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:19:45,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:19:45,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 06:19:45,826 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 06:19:45,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:19:45,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1735459933, now seen corresponding path program 1 times [2023-11-29 06:19:45,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:19:45,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082181281] [2023-11-29 06:19:45,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:19:45,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:19:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:19:45,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:19:45,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:19:45,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082181281] [2023-11-29 06:19:45,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082181281] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:19:45,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:19:45,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:19:45,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068647813] [2023-11-29 06:19:45,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:19:45,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:19:45,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:19:45,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:19:45,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:19:46,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 06:19:46,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 88 transitions, 248 flow. Second operand has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:46,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:19:46,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 06:19:46,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:19:47,040 INFO L124 PetriNetUnfolderBase]: 7940/15046 cut-off events. [2023-11-29 06:19:47,041 INFO L125 PetriNetUnfolderBase]: For 7505/7739 co-relation queries the response was YES. [2023-11-29 06:19:47,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31767 conditions, 15046 events. 7940/15046 cut-off events. For 7505/7739 co-relation queries the response was YES. Maximal size of possible extension queue 944. Compared 137498 event pairs, 1868 based on Foata normal form. 234/13477 useless extension candidates. Maximal degree in co-relation 18939. Up to 6603 conditions per place. [2023-11-29 06:19:47,118 INFO L140 encePairwiseOnDemand]: 87/91 looper letters, 64 selfloop transitions, 4 changer transitions 0/112 dead transitions. [2023-11-29 06:19:47,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 112 transitions, 459 flow [2023-11-29 06:19:47,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:19:47,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:19:47,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 255 transitions. [2023-11-29 06:19:47,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7005494505494505 [2023-11-29 06:19:47,120 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 255 transitions. [2023-11-29 06:19:47,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 255 transitions. [2023-11-29 06:19:47,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:19:47,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 255 transitions. [2023-11-29 06:19:47,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:47,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:47,123 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:47,123 INFO L175 Difference]: Start difference. First operand has 90 places, 88 transitions, 248 flow. Second operand 4 states and 255 transitions. [2023-11-29 06:19:47,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 112 transitions, 459 flow [2023-11-29 06:19:47,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 112 transitions, 445 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 06:19:47,300 INFO L231 Difference]: Finished difference. Result has 89 places, 87 transitions, 246 flow [2023-11-29 06:19:47,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=246, PETRI_PLACES=89, PETRI_TRANSITIONS=87} [2023-11-29 06:19:47,301 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 5 predicate places. [2023-11-29 06:19:47,301 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 87 transitions, 246 flow [2023-11-29 06:19:47,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:47,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:19:47,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:19:47,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 06:19:47,302 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 06:19:47,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:19:47,303 INFO L85 PathProgramCache]: Analyzing trace with hash -823640472, now seen corresponding path program 1 times [2023-11-29 06:19:47,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:19:47,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661645350] [2023-11-29 06:19:47,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:19:47,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:19:47,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:19:47,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:19:47,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:19:47,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661645350] [2023-11-29 06:19:47,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661645350] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:19:47,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:19:47,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:19:47,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130454079] [2023-11-29 06:19:47,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:19:47,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:19:47,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:19:47,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:19:47,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:19:47,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 91 [2023-11-29 06:19:47,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 87 transitions, 246 flow. Second operand has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:47,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:19:47,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 91 [2023-11-29 06:19:47,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:19:48,682 INFO L124 PetriNetUnfolderBase]: 8838/16136 cut-off events. [2023-11-29 06:19:48,683 INFO L125 PetriNetUnfolderBase]: For 8561/9072 co-relation queries the response was YES. [2023-11-29 06:19:48,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34288 conditions, 16136 events. 8838/16136 cut-off events. For 8561/9072 co-relation queries the response was YES. Maximal size of possible extension queue 972. Compared 144490 event pairs, 3901 based on Foata normal form. 481/14449 useless extension candidates. Maximal degree in co-relation 19616. Up to 7369 conditions per place. [2023-11-29 06:19:48,787 INFO L140 encePairwiseOnDemand]: 86/91 looper letters, 92 selfloop transitions, 4 changer transitions 0/137 dead transitions. [2023-11-29 06:19:48,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 137 transitions, 588 flow [2023-11-29 06:19:48,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:19:48,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:19:48,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 271 transitions. [2023-11-29 06:19:48,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7445054945054945 [2023-11-29 06:19:48,790 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 271 transitions. [2023-11-29 06:19:48,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 271 transitions. [2023-11-29 06:19:48,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:19:48,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 271 transitions. [2023-11-29 06:19:48,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:48,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:48,792 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:48,792 INFO L175 Difference]: Start difference. First operand has 89 places, 87 transitions, 246 flow. Second operand 4 states and 271 transitions. [2023-11-29 06:19:48,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 137 transitions, 588 flow [2023-11-29 06:19:48,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 137 transitions, 565 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 06:19:48,874 INFO L231 Difference]: Finished difference. Result has 88 places, 86 transitions, 237 flow [2023-11-29 06:19:48,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=237, PETRI_PLACES=88, PETRI_TRANSITIONS=86} [2023-11-29 06:19:48,875 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 4 predicate places. [2023-11-29 06:19:48,875 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 86 transitions, 237 flow [2023-11-29 06:19:48,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:48,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:19:48,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:19:48,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 06:19:48,876 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 06:19:48,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:19:48,876 INFO L85 PathProgramCache]: Analyzing trace with hash -823641497, now seen corresponding path program 1 times [2023-11-29 06:19:48,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:19:48,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864576511] [2023-11-29 06:19:48,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:19:48,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:19:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:19:48,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:19:48,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:19:48,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864576511] [2023-11-29 06:19:48,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864576511] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:19:48,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:19:48,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:19:48,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7923745] [2023-11-29 06:19:48,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:19:48,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:19:48,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:19:48,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:19:48,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:19:48,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 91 [2023-11-29 06:19:48,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 86 transitions, 237 flow. Second operand has 5 states, 5 states have (on average 47.4) internal successors, (237), 5 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:48,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:19:48,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 91 [2023-11-29 06:19:48,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:19:50,213 INFO L124 PetriNetUnfolderBase]: 10759/17322 cut-off events. [2023-11-29 06:19:50,213 INFO L125 PetriNetUnfolderBase]: For 5828/6470 co-relation queries the response was YES. [2023-11-29 06:19:50,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38260 conditions, 17322 events. 10759/17322 cut-off events. For 5828/6470 co-relation queries the response was YES. Maximal size of possible extension queue 1020. Compared 137463 event pairs, 1991 based on Foata normal form. 323/16120 useless extension candidates. Maximal degree in co-relation 22430. Up to 7845 conditions per place. [2023-11-29 06:19:50,310 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 90 selfloop transitions, 6 changer transitions 0/135 dead transitions. [2023-11-29 06:19:50,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 135 transitions, 569 flow [2023-11-29 06:19:50,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:19:50,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 06:19:50,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 320 transitions. [2023-11-29 06:19:50,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7032967032967034 [2023-11-29 06:19:50,312 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 320 transitions. [2023-11-29 06:19:50,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 320 transitions. [2023-11-29 06:19:50,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:19:50,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 320 transitions. [2023-11-29 06:19:50,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:50,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:50,316 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:50,316 INFO L175 Difference]: Start difference. First operand has 88 places, 86 transitions, 237 flow. Second operand 5 states and 320 transitions. [2023-11-29 06:19:50,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 135 transitions, 569 flow [2023-11-29 06:19:50,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 135 transitions, 563 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:19:50,378 INFO L231 Difference]: Finished difference. Result has 89 places, 85 transitions, 241 flow [2023-11-29 06:19:50,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=241, PETRI_PLACES=89, PETRI_TRANSITIONS=85} [2023-11-29 06:19:50,379 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 5 predicate places. [2023-11-29 06:19:50,379 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 85 transitions, 241 flow [2023-11-29 06:19:50,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.4) internal successors, (237), 5 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:50,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:19:50,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:19:50,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 06:19:50,380 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 06:19:50,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:19:50,380 INFO L85 PathProgramCache]: Analyzing trace with hash -141448512, now seen corresponding path program 1 times [2023-11-29 06:19:50,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:19:50,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734797388] [2023-11-29 06:19:50,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:19:50,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:19:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:19:50,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:19:50,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:19:50,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734797388] [2023-11-29 06:19:50,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734797388] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:19:50,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:19:50,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:19:50,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719404334] [2023-11-29 06:19:50,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:19:50,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:19:50,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:19:50,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:19:50,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:19:50,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 91 [2023-11-29 06:19:50,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 85 transitions, 241 flow. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:50,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:19:50,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 91 [2023-11-29 06:19:50,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:19:51,745 INFO L124 PetriNetUnfolderBase]: 7887/14525 cut-off events. [2023-11-29 06:19:51,745 INFO L125 PetriNetUnfolderBase]: For 8021/8671 co-relation queries the response was YES. [2023-11-29 06:19:51,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30060 conditions, 14525 events. 7887/14525 cut-off events. For 8021/8671 co-relation queries the response was YES. Maximal size of possible extension queue 897. Compared 130138 event pairs, 2597 based on Foata normal form. 972/13228 useless extension candidates. Maximal degree in co-relation 17766. Up to 5577 conditions per place. [2023-11-29 06:19:51,830 INFO L140 encePairwiseOnDemand]: 86/91 looper letters, 68 selfloop transitions, 3 changer transitions 0/110 dead transitions. [2023-11-29 06:19:51,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 110 transitions, 477 flow [2023-11-29 06:19:51,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:19:51,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:19:51,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 253 transitions. [2023-11-29 06:19:51,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.695054945054945 [2023-11-29 06:19:51,832 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 253 transitions. [2023-11-29 06:19:51,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 253 transitions. [2023-11-29 06:19:51,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:19:51,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 253 transitions. [2023-11-29 06:19:51,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 63.25) internal successors, (253), 4 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:51,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:51,836 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:51,836 INFO L175 Difference]: Start difference. First operand has 89 places, 85 transitions, 241 flow. Second operand 4 states and 253 transitions. [2023-11-29 06:19:51,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 110 transitions, 477 flow [2023-11-29 06:19:51,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 110 transitions, 462 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 06:19:51,866 INFO L231 Difference]: Finished difference. Result has 87 places, 83 transitions, 234 flow [2023-11-29 06:19:51,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=87, PETRI_TRANSITIONS=83} [2023-11-29 06:19:51,867 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 3 predicate places. [2023-11-29 06:19:51,867 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 83 transitions, 234 flow [2023-11-29 06:19:51,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:51,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:19:51,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:19:51,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 06:19:51,868 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 06:19:51,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:19:51,868 INFO L85 PathProgramCache]: Analyzing trace with hash 2035285889, now seen corresponding path program 1 times [2023-11-29 06:19:51,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:19:51,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657875765] [2023-11-29 06:19:51,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:19:51,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:19:51,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:19:51,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:19:51,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:19:51,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657875765] [2023-11-29 06:19:51,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657875765] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:19:51,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:19:51,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:19:51,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122843404] [2023-11-29 06:19:51,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:19:51,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:19:51,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:19:51,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:19:51,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:19:51,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 91 [2023-11-29 06:19:51,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 83 transitions, 234 flow. Second operand has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:51,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:19:51,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 91 [2023-11-29 06:19:51,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:19:52,968 INFO L124 PetriNetUnfolderBase]: 7957/14712 cut-off events. [2023-11-29 06:19:52,969 INFO L125 PetriNetUnfolderBase]: For 7663/7897 co-relation queries the response was YES. [2023-11-29 06:19:53,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31137 conditions, 14712 events. 7957/14712 cut-off events. For 7663/7897 co-relation queries the response was YES. Maximal size of possible extension queue 902. Compared 130798 event pairs, 1868 based on Foata normal form. 472/13724 useless extension candidates. Maximal degree in co-relation 18947. Up to 6841 conditions per place. [2023-11-29 06:19:53,057 INFO L140 encePairwiseOnDemand]: 87/91 looper letters, 65 selfloop transitions, 4 changer transitions 0/107 dead transitions. [2023-11-29 06:19:53,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 107 transitions, 443 flow [2023-11-29 06:19:53,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:19:53,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:19:53,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 251 transitions. [2023-11-29 06:19:53,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6895604395604396 [2023-11-29 06:19:53,059 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 251 transitions. [2023-11-29 06:19:53,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 251 transitions. [2023-11-29 06:19:53,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:19:53,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 251 transitions. [2023-11-29 06:19:53,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:53,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:53,062 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:53,062 INFO L175 Difference]: Start difference. First operand has 87 places, 83 transitions, 234 flow. Second operand 4 states and 251 transitions. [2023-11-29 06:19:53,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 107 transitions, 443 flow [2023-11-29 06:19:53,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 107 transitions, 433 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 06:19:53,190 INFO L231 Difference]: Finished difference. Result has 86 places, 82 transitions, 232 flow [2023-11-29 06:19:53,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=86, PETRI_TRANSITIONS=82} [2023-11-29 06:19:53,191 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 2 predicate places. [2023-11-29 06:19:53,191 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 82 transitions, 232 flow [2023-11-29 06:19:53,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:53,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:19:53,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:19:53,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 06:19:53,192 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 06:19:53,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:19:53,192 INFO L85 PathProgramCache]: Analyzing trace with hash 236918089, now seen corresponding path program 1 times [2023-11-29 06:19:53,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:19:53,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026442589] [2023-11-29 06:19:53,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:19:53,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:19:53,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:19:53,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:19:53,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:19:53,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026442589] [2023-11-29 06:19:53,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026442589] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:19:53,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:19:53,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:19:53,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914907613] [2023-11-29 06:19:53,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:19:53,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:19:53,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:19:53,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:19:53,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:19:53,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 91 [2023-11-29 06:19:53,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 82 transitions, 232 flow. Second operand has 6 states, 6 states have (on average 44.166666666666664) internal successors, (265), 6 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:53,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:19:53,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 91 [2023-11-29 06:19:53,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:19:54,603 INFO L124 PetriNetUnfolderBase]: 10759/16982 cut-off events. [2023-11-29 06:19:54,603 INFO L125 PetriNetUnfolderBase]: For 9619/9959 co-relation queries the response was YES. [2023-11-29 06:19:54,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38421 conditions, 16982 events. 10759/16982 cut-off events. For 9619/9959 co-relation queries the response was YES. Maximal size of possible extension queue 1002. Compared 130932 event pairs, 1974 based on Foata normal form. 784/16305 useless extension candidates. Maximal degree in co-relation 21735. Up to 4457 conditions per place. [2023-11-29 06:19:54,692 INFO L140 encePairwiseOnDemand]: 83/91 looper letters, 112 selfloop transitions, 9 changer transitions 0/157 dead transitions. [2023-11-29 06:19:54,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 157 transitions, 705 flow [2023-11-29 06:19:54,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:19:54,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 06:19:54,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 370 transitions. [2023-11-29 06:19:54,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6776556776556777 [2023-11-29 06:19:54,694 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 370 transitions. [2023-11-29 06:19:54,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 370 transitions. [2023-11-29 06:19:54,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:19:54,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 370 transitions. [2023-11-29 06:19:54,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 61.666666666666664) internal successors, (370), 6 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:54,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:54,698 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:54,698 INFO L175 Difference]: Start difference. First operand has 86 places, 82 transitions, 232 flow. Second operand 6 states and 370 transitions. [2023-11-29 06:19:54,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 157 transitions, 705 flow [2023-11-29 06:19:54,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 157 transitions, 679 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 06:19:54,757 INFO L231 Difference]: Finished difference. Result has 88 places, 82 transitions, 249 flow [2023-11-29 06:19:54,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=249, PETRI_PLACES=88, PETRI_TRANSITIONS=82} [2023-11-29 06:19:54,757 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 4 predicate places. [2023-11-29 06:19:54,758 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 82 transitions, 249 flow [2023-11-29 06:19:54,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.166666666666664) internal successors, (265), 6 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:54,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:19:54,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:19:54,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 06:19:54,758 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 06:19:54,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:19:54,758 INFO L85 PathProgramCache]: Analyzing trace with hash -89935815, now seen corresponding path program 1 times [2023-11-29 06:19:54,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:19:54,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596304717] [2023-11-29 06:19:54,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:19:54,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:19:54,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:19:54,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:19:54,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:19:54,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596304717] [2023-11-29 06:19:54,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596304717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:19:54,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:19:54,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:19:54,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781324907] [2023-11-29 06:19:54,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:19:54,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:19:54,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:19:54,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:19:54,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:19:54,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-11-29 06:19:54,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 82 transitions, 249 flow. Second operand has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:54,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:19:54,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-11-29 06:19:54,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:19:55,742 INFO L124 PetriNetUnfolderBase]: 6402/12675 cut-off events. [2023-11-29 06:19:55,742 INFO L125 PetriNetUnfolderBase]: For 10639/11308 co-relation queries the response was YES. [2023-11-29 06:19:55,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26699 conditions, 12675 events. 6402/12675 cut-off events. For 10639/11308 co-relation queries the response was YES. Maximal size of possible extension queue 818. Compared 118657 event pairs, 2598 based on Foata normal form. 610/11640 useless extension candidates. Maximal degree in co-relation 15523. Up to 4873 conditions per place. [2023-11-29 06:19:55,837 INFO L140 encePairwiseOnDemand]: 87/91 looper letters, 68 selfloop transitions, 3 changer transitions 0/109 dead transitions. [2023-11-29 06:19:55,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 109 transitions, 500 flow [2023-11-29 06:19:55,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:19:55,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:19:55,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 254 transitions. [2023-11-29 06:19:55,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6978021978021978 [2023-11-29 06:19:55,840 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 254 transitions. [2023-11-29 06:19:55,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 254 transitions. [2023-11-29 06:19:55,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:19:55,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 254 transitions. [2023-11-29 06:19:55,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 63.5) internal successors, (254), 4 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:55,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:55,842 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:55,842 INFO L175 Difference]: Start difference. First operand has 88 places, 82 transitions, 249 flow. Second operand 4 states and 254 transitions. [2023-11-29 06:19:55,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 109 transitions, 500 flow [2023-11-29 06:19:55,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 109 transitions, 478 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 06:19:55,893 INFO L231 Difference]: Finished difference. Result has 86 places, 81 transitions, 240 flow [2023-11-29 06:19:55,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=240, PETRI_PLACES=86, PETRI_TRANSITIONS=81} [2023-11-29 06:19:55,894 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 2 predicate places. [2023-11-29 06:19:55,894 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 81 transitions, 240 flow [2023-11-29 06:19:55,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:55,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:19:55,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:19:55,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 06:19:55,895 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 06:19:55,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:19:55,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1330646138, now seen corresponding path program 1 times [2023-11-29 06:19:55,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:19:55,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135299890] [2023-11-29 06:19:55,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:19:55,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:19:55,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:19:55,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:19:55,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:19:55,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135299890] [2023-11-29 06:19:55,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135299890] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:19:55,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:19:55,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:19:55,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679594387] [2023-11-29 06:19:55,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:19:55,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:19:55,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:19:55,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:19:55,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:19:55,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 91 [2023-11-29 06:19:55,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 81 transitions, 240 flow. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 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) [2023-11-29 06:19:55,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:19:55,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 91 [2023-11-29 06:19:55,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:19:57,077 INFO L124 PetriNetUnfolderBase]: 8939/15876 cut-off events. [2023-11-29 06:19:57,077 INFO L125 PetriNetUnfolderBase]: For 10903/11707 co-relation queries the response was YES. [2023-11-29 06:19:57,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35175 conditions, 15876 events. 8939/15876 cut-off events. For 10903/11707 co-relation queries the response was YES. Maximal size of possible extension queue 951. Compared 138128 event pairs, 3831 based on Foata normal form. 910/15156 useless extension candidates. Maximal degree in co-relation 20900. Up to 7233 conditions per place. [2023-11-29 06:19:57,141 INFO L140 encePairwiseOnDemand]: 86/91 looper letters, 95 selfloop transitions, 4 changer transitions 0/133 dead transitions. [2023-11-29 06:19:57,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 133 transitions, 604 flow [2023-11-29 06:19:57,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:19:57,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:19:57,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 271 transitions. [2023-11-29 06:19:57,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7445054945054945 [2023-11-29 06:19:57,143 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 271 transitions. [2023-11-29 06:19:57,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 271 transitions. [2023-11-29 06:19:57,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:19:57,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 271 transitions. [2023-11-29 06:19:57,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:57,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:57,145 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:57,145 INFO L175 Difference]: Start difference. First operand has 86 places, 81 transitions, 240 flow. Second operand 4 states and 271 transitions. [2023-11-29 06:19:57,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 133 transitions, 604 flow [2023-11-29 06:19:57,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 133 transitions, 587 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 06:19:57,227 INFO L231 Difference]: Finished difference. Result has 85 places, 80 transitions, 233 flow [2023-11-29 06:19:57,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=233, PETRI_PLACES=85, PETRI_TRANSITIONS=80} [2023-11-29 06:19:57,228 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 1 predicate places. [2023-11-29 06:19:57,228 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 80 transitions, 233 flow [2023-11-29 06:19:57,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 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) [2023-11-29 06:19:57,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:19:57,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:19:57,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 06:19:57,228 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 06:19:57,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:19:57,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1330647163, now seen corresponding path program 1 times [2023-11-29 06:19:57,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:19:57,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747789095] [2023-11-29 06:19:57,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:19:57,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:19:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:19:57,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:19:57,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:19:57,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747789095] [2023-11-29 06:19:57,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747789095] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:19:57,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:19:57,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:19:57,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602384289] [2023-11-29 06:19:57,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:19:57,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:19:57,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:19:57,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:19:57,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:19:57,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 91 [2023-11-29 06:19:57,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 80 transitions, 233 flow. Second operand has 5 states, 5 states have (on average 47.8) internal successors, (239), 5 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:57,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:19:57,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 91 [2023-11-29 06:19:57,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:19:58,487 INFO L124 PetriNetUnfolderBase]: 10977/17405 cut-off events. [2023-11-29 06:19:58,487 INFO L125 PetriNetUnfolderBase]: For 10590/11692 co-relation queries the response was YES. [2023-11-29 06:19:58,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40143 conditions, 17405 events. 10977/17405 cut-off events. For 10590/11692 co-relation queries the response was YES. Maximal size of possible extension queue 985. Compared 134431 event pairs, 1797 based on Foata normal form. 874/16968 useless extension candidates. Maximal degree in co-relation 23847. Up to 8347 conditions per place. [2023-11-29 06:19:58,584 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 93 selfloop transitions, 6 changer transitions 0/131 dead transitions. [2023-11-29 06:19:58,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 131 transitions, 591 flow [2023-11-29 06:19:58,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:19:58,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 06:19:58,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 320 transitions. [2023-11-29 06:19:58,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7032967032967034 [2023-11-29 06:19:58,586 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 320 transitions. [2023-11-29 06:19:58,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 320 transitions. [2023-11-29 06:19:58,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:19:58,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 320 transitions. [2023-11-29 06:19:58,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:58,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:58,589 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:58,589 INFO L175 Difference]: Start difference. First operand has 85 places, 80 transitions, 233 flow. Second operand 5 states and 320 transitions. [2023-11-29 06:19:58,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 131 transitions, 591 flow [2023-11-29 06:19:58,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 131 transitions, 585 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:19:58,683 INFO L231 Difference]: Finished difference. Result has 86 places, 79 transitions, 237 flow [2023-11-29 06:19:58,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=237, PETRI_PLACES=86, PETRI_TRANSITIONS=79} [2023-11-29 06:19:58,684 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 2 predicate places. [2023-11-29 06:19:58,684 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 79 transitions, 237 flow [2023-11-29 06:19:58,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.8) internal successors, (239), 5 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:58,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:19:58,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:19:58,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 06:19:58,684 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 06:19:58,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:19:58,685 INFO L85 PathProgramCache]: Analyzing trace with hash -298156019, now seen corresponding path program 1 times [2023-11-29 06:19:58,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:19:58,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583922958] [2023-11-29 06:19:58,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:19:58,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:19:58,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:19:58,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:19:58,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:19:58,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583922958] [2023-11-29 06:19:58,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583922958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:19:58,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:19:58,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:19:58,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473985707] [2023-11-29 06:19:58,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:19:58,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:19:58,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:19:58,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:19:58,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:19:58,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 91 [2023-11-29 06:19:58,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 79 transitions, 237 flow. Second operand has 5 states, 5 states have (on average 44.6) internal successors, (223), 5 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:19:58,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:19:58,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 91 [2023-11-29 06:19:58,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:20:00,153 INFO L124 PetriNetUnfolderBase]: 10692/16567 cut-off events. [2023-11-29 06:20:00,153 INFO L125 PetriNetUnfolderBase]: For 11093/11412 co-relation queries the response was YES. [2023-11-29 06:20:00,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39004 conditions, 16567 events. 10692/16567 cut-off events. For 11093/11412 co-relation queries the response was YES. Maximal size of possible extension queue 969. Compared 123981 event pairs, 3884 based on Foata normal form. 541/15820 useless extension candidates. Maximal degree in co-relation 23252. Up to 7591 conditions per place. [2023-11-29 06:20:00,248 INFO L140 encePairwiseOnDemand]: 84/91 looper letters, 141 selfloop transitions, 8 changer transitions 0/180 dead transitions. [2023-11-29 06:20:00,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 180 transitions, 845 flow [2023-11-29 06:20:00,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:20:00,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 06:20:00,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 398 transitions. [2023-11-29 06:20:00,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7289377289377289 [2023-11-29 06:20:00,251 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 398 transitions. [2023-11-29 06:20:00,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 398 transitions. [2023-11-29 06:20:00,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:20:00,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 398 transitions. [2023-11-29 06:20:00,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 66.33333333333333) internal successors, (398), 6 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:20:00,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:20:00,254 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:20:00,254 INFO L175 Difference]: Start difference. First operand has 86 places, 79 transitions, 237 flow. Second operand 6 states and 398 transitions. [2023-11-29 06:20:00,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 180 transitions, 845 flow [2023-11-29 06:20:00,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 180 transitions, 807 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-29 06:20:00,415 INFO L231 Difference]: Finished difference. Result has 88 places, 80 transitions, 252 flow [2023-11-29 06:20:00,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=252, PETRI_PLACES=88, PETRI_TRANSITIONS=80} [2023-11-29 06:20:00,416 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 4 predicate places. [2023-11-29 06:20:00,416 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 80 transitions, 252 flow [2023-11-29 06:20:00,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.6) internal successors, (223), 5 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:20:00,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:20:00,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:20:00,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 06:20:00,417 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 06:20:00,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:20:00,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1699611652, now seen corresponding path program 1 times [2023-11-29 06:20:00,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:20:00,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748923948] [2023-11-29 06:20:00,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:20:00,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:20:00,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:20:00,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:20:00,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:20:00,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748923948] [2023-11-29 06:20:00,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748923948] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:20:00,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:20:00,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:20:00,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472221392] [2023-11-29 06:20:00,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:20:00,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:20:00,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:20:00,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:20:00,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:20:00,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 91 [2023-11-29 06:20:00,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 80 transitions, 252 flow. Second operand has 6 states, 6 states have (on average 44.5) internal successors, (267), 6 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:20:00,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:20:00,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 91 [2023-11-29 06:20:00,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:20:01,802 INFO L124 PetriNetUnfolderBase]: 10977/16885 cut-off events. [2023-11-29 06:20:01,802 INFO L125 PetriNetUnfolderBase]: For 21132/22024 co-relation queries the response was YES. [2023-11-29 06:20:01,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40936 conditions, 16885 events. 10977/16885 cut-off events. For 21132/22024 co-relation queries the response was YES. Maximal size of possible extension queue 1000. Compared 124933 event pairs, 1779 based on Foata normal form. 1368/16942 useless extension candidates. Maximal degree in co-relation 27999. Up to 4743 conditions per place. [2023-11-29 06:20:01,900 INFO L140 encePairwiseOnDemand]: 83/91 looper letters, 120 selfloop transitions, 9 changer transitions 0/161 dead transitions. [2023-11-29 06:20:01,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 161 transitions, 804 flow [2023-11-29 06:20:01,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:20:01,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 06:20:01,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 370 transitions. [2023-11-29 06:20:01,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6776556776556777 [2023-11-29 06:20:01,903 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 370 transitions. [2023-11-29 06:20:01,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 370 transitions. [2023-11-29 06:20:01,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:20:01,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 370 transitions. [2023-11-29 06:20:01,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 61.666666666666664) internal successors, (370), 6 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:20:01,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:20:01,906 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:20:01,906 INFO L175 Difference]: Start difference. First operand has 88 places, 80 transitions, 252 flow. Second operand 6 states and 370 transitions. [2023-11-29 06:20:01,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 161 transitions, 804 flow [2023-11-29 06:20:02,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 161 transitions, 752 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-11-29 06:20:02,012 INFO L231 Difference]: Finished difference. Result has 89 places, 80 transitions, 261 flow [2023-11-29 06:20:02,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=261, PETRI_PLACES=89, PETRI_TRANSITIONS=80} [2023-11-29 06:20:02,013 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 5 predicate places. [2023-11-29 06:20:02,013 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 80 transitions, 261 flow [2023-11-29 06:20:02,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.5) internal successors, (267), 6 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:20:02,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:20:02,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:20:02,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 06:20:02,014 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 06:20:02,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:20:02,014 INFO L85 PathProgramCache]: Analyzing trace with hash -529932868, now seen corresponding path program 1 times [2023-11-29 06:20:02,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:20:02,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028574065] [2023-11-29 06:20:02,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:20:02,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:20:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:20:02,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:20:02,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:20:02,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028574065] [2023-11-29 06:20:02,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028574065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:20:02,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:20:02,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:20:02,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004879015] [2023-11-29 06:20:02,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:20:02,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:20:02,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:20:02,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:20:02,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:20:02,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 91 [2023-11-29 06:20:02,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 80 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:20:02,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:20:02,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 91 [2023-11-29 06:20:02,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:20:03,327 INFO L124 PetriNetUnfolderBase]: 11137/19436 cut-off events. [2023-11-29 06:20:03,328 INFO L125 PetriNetUnfolderBase]: For 24652/26443 co-relation queries the response was YES. [2023-11-29 06:20:03,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45138 conditions, 19436 events. 11137/19436 cut-off events. For 24652/26443 co-relation queries the response was YES. Maximal size of possible extension queue 1085. Compared 170345 event pairs, 5035 based on Foata normal form. 1646/18885 useless extension candidates. Maximal degree in co-relation 31364. Up to 9203 conditions per place. [2023-11-29 06:20:03,428 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 107 selfloop transitions, 5 changer transitions 0/144 dead transitions. [2023-11-29 06:20:03,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 144 transitions, 745 flow [2023-11-29 06:20:03,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:20:03,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:20:03,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 272 transitions. [2023-11-29 06:20:03,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7472527472527473 [2023-11-29 06:20:03,430 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 272 transitions. [2023-11-29 06:20:03,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 272 transitions. [2023-11-29 06:20:03,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:20:03,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 272 transitions. [2023-11-29 06:20:03,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:20:03,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:20:03,432 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:20:03,432 INFO L175 Difference]: Start difference. First operand has 89 places, 80 transitions, 261 flow. Second operand 4 states and 272 transitions. [2023-11-29 06:20:03,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 144 transitions, 745 flow [2023-11-29 06:20:03,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 144 transitions, 714 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 06:20:03,454 INFO L231 Difference]: Finished difference. Result has 90 places, 82 transitions, 275 flow [2023-11-29 06:20:03,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=275, PETRI_PLACES=90, PETRI_TRANSITIONS=82} [2023-11-29 06:20:03,454 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 6 predicate places. [2023-11-29 06:20:03,454 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 82 transitions, 275 flow [2023-11-29 06:20:03,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:20:03,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:20:03,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:20:03,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 06:20:03,455 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 06:20:03,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:20:03,455 INFO L85 PathProgramCache]: Analyzing trace with hash -529933893, now seen corresponding path program 1 times [2023-11-29 06:20:03,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:20:03,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293972032] [2023-11-29 06:20:03,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:20:03,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:20:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:20:03,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:20:03,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:20:03,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293972032] [2023-11-29 06:20:03,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293972032] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:20:03,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:20:03,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:20:03,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581075447] [2023-11-29 06:20:03,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:20:03,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:20:03,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:20:03,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:20:03,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:20:03,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 91 [2023-11-29 06:20:03,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 82 transitions, 275 flow. Second operand has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:20:03,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:20:03,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 91 [2023-11-29 06:20:03,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:20:05,016 INFO L124 PetriNetUnfolderBase]: 13366/20994 cut-off events. [2023-11-29 06:20:05,016 INFO L125 PetriNetUnfolderBase]: For 25979/28345 co-relation queries the response was YES. [2023-11-29 06:20:05,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52720 conditions, 20994 events. 13366/20994 cut-off events. For 25979/28345 co-relation queries the response was YES. Maximal size of possible extension queue 1132. Compared 164032 event pairs, 2615 based on Foata normal form. 2101/22094 useless extension candidates. Maximal degree in co-relation 36660. Up to 9613 conditions per place. [2023-11-29 06:20:05,152 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 106 selfloop transitions, 6 changer transitions 0/142 dead transitions. [2023-11-29 06:20:05,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 142 transitions, 733 flow [2023-11-29 06:20:05,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:20:05,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 06:20:05,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 320 transitions. [2023-11-29 06:20:05,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7032967032967034 [2023-11-29 06:20:05,154 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 320 transitions. [2023-11-29 06:20:05,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 320 transitions. [2023-11-29 06:20:05,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:20:05,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 320 transitions. [2023-11-29 06:20:05,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:20:05,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:20:05,157 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:20:05,157 INFO L175 Difference]: Start difference. First operand has 90 places, 82 transitions, 275 flow. Second operand 5 states and 320 transitions. [2023-11-29 06:20:05,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 142 transitions, 733 flow [2023-11-29 06:20:05,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 142 transitions, 730 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:20:05,303 INFO L231 Difference]: Finished difference. Result has 93 places, 82 transitions, 289 flow [2023-11-29 06:20:05,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=289, PETRI_PLACES=93, PETRI_TRANSITIONS=82} [2023-11-29 06:20:05,304 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 9 predicate places. [2023-11-29 06:20:05,304 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 82 transitions, 289 flow [2023-11-29 06:20:05,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:20:05,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:20:05,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:20:05,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 06:20:05,305 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 06:20:05,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:20:05,305 INFO L85 PathProgramCache]: Analyzing trace with hash 2095671499, now seen corresponding path program 1 times [2023-11-29 06:20:05,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:20:05,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553590543] [2023-11-29 06:20:05,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:20:05,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:20:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:20:05,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:20:05,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:20:05,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553590543] [2023-11-29 06:20:05,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553590543] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:20:05,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:20:05,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:20:05,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746140267] [2023-11-29 06:20:05,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:20:05,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:20:05,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:20:05,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:20:05,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:20:05,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 91 [2023-11-29 06:20:05,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 82 transitions, 289 flow. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:20:05,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:20:05,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 91 [2023-11-29 06:20:05,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:20:06,866 INFO L124 PetriNetUnfolderBase]: 13506/21171 cut-off events. [2023-11-29 06:20:06,866 INFO L125 PetriNetUnfolderBase]: For 29486/31063 co-relation queries the response was YES. [2023-11-29 06:20:06,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55086 conditions, 21171 events. 13506/21171 cut-off events. For 29486/31063 co-relation queries the response was YES. Maximal size of possible extension queue 1165. Compared 165257 event pairs, 4762 based on Foata normal form. 1815/21937 useless extension candidates. Maximal degree in co-relation 38228. Up to 9237 conditions per place. [2023-11-29 06:20:07,002 INFO L140 encePairwiseOnDemand]: 86/91 looper letters, 106 selfloop transitions, 5 changer transitions 0/142 dead transitions. [2023-11-29 06:20:07,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 142 transitions, 750 flow [2023-11-29 06:20:07,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:20:07,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:20:07,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 269 transitions. [2023-11-29 06:20:07,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.739010989010989 [2023-11-29 06:20:07,004 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 269 transitions. [2023-11-29 06:20:07,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 269 transitions. [2023-11-29 06:20:07,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:20:07,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 269 transitions. [2023-11-29 06:20:07,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 67.25) internal successors, (269), 4 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:20:07,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:20:07,006 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:20:07,006 INFO L175 Difference]: Start difference. First operand has 93 places, 82 transitions, 289 flow. Second operand 4 states and 269 transitions. [2023-11-29 06:20:07,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 142 transitions, 750 flow [2023-11-29 06:20:07,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 142 transitions, 726 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 06:20:07,067 INFO L231 Difference]: Finished difference. Result has 92 places, 82 transitions, 290 flow [2023-11-29 06:20:07,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=290, PETRI_PLACES=92, PETRI_TRANSITIONS=82} [2023-11-29 06:20:07,068 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 8 predicate places. [2023-11-29 06:20:07,068 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 82 transitions, 290 flow [2023-11-29 06:20:07,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:20:07,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:20:07,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:20:07,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 06:20:07,069 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 06:20:07,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:20:07,069 INFO L85 PathProgramCache]: Analyzing trace with hash 751919271, now seen corresponding path program 1 times [2023-11-29 06:20:07,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:20:07,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699141446] [2023-11-29 06:20:07,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:20:07,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:20:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:20:07,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:20:07,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:20:07,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699141446] [2023-11-29 06:20:07,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699141446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:20:07,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:20:07,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:20:07,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557400669] [2023-11-29 06:20:07,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:20:07,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:20:07,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:20:07,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:20:07,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:20:07,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 91 [2023-11-29 06:20:07,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 82 transitions, 290 flow. Second operand has 6 states, 6 states have (on average 44.833333333333336) internal successors, (269), 6 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:20:07,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:20:07,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 91 [2023-11-29 06:20:07,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:20:08,899 INFO L124 PetriNetUnfolderBase]: 14494/22434 cut-off events. [2023-11-29 06:20:08,900 INFO L125 PetriNetUnfolderBase]: For 35530/37733 co-relation queries the response was YES. [2023-11-29 06:20:08,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60031 conditions, 22434 events. 14494/22434 cut-off events. For 35530/37733 co-relation queries the response was YES. Maximal size of possible extension queue 1223. Compared 173161 event pairs, 2861 based on Foata normal form. 2783/24132 useless extension candidates. Maximal degree in co-relation 46929. Up to 5770 conditions per place. [2023-11-29 06:20:09,018 INFO L140 encePairwiseOnDemand]: 83/91 looper letters, 137 selfloop transitions, 9 changer transitions 0/175 dead transitions. [2023-11-29 06:20:09,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 175 transitions, 972 flow [2023-11-29 06:20:09,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:20:09,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 06:20:09,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 370 transitions. [2023-11-29 06:20:09,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6776556776556777 [2023-11-29 06:20:09,020 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 370 transitions. [2023-11-29 06:20:09,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 370 transitions. [2023-11-29 06:20:09,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:20:09,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 370 transitions. [2023-11-29 06:20:09,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 61.666666666666664) internal successors, (370), 6 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:20:09,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:20:09,022 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:20:09,022 INFO L175 Difference]: Start difference. First operand has 92 places, 82 transitions, 290 flow. Second operand 6 states and 370 transitions. [2023-11-29 06:20:09,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 175 transitions, 972 flow [2023-11-29 06:20:09,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 175 transitions, 956 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:20:09,160 INFO L231 Difference]: Finished difference. Result has 96 places, 82 transitions, 311 flow [2023-11-29 06:20:09,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=311, PETRI_PLACES=96, PETRI_TRANSITIONS=82} [2023-11-29 06:20:09,161 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 12 predicate places. [2023-11-29 06:20:09,161 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 82 transitions, 311 flow [2023-11-29 06:20:09,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.833333333333336) internal successors, (269), 6 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:20:09,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:20:09,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:20:09,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 06:20:09,161 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-29 06:20:09,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:20:09,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1512988511, now seen corresponding path program 1 times [2023-11-29 06:20:09,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:20:09,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073600202] [2023-11-29 06:20:09,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:20:09,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:20:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:20:09,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:20:09,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:20:09,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073600202] [2023-11-29 06:20:09,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073600202] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:20:09,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:20:09,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:20:09,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107323990] [2023-11-29 06:20:09,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:20:09,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:20:09,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:20:09,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:20:09,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:20:09,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 91 [2023-11-29 06:20:09,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 82 transitions, 311 flow. Second operand has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:20:09,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:20:09,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 91 [2023-11-29 06:20:09,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:20:10,928 INFO L124 PetriNetUnfolderBase]: 14204/21446 cut-off events. [2023-11-29 06:20:10,928 INFO L125 PetriNetUnfolderBase]: For 34002/36164 co-relation queries the response was YES. [2023-11-29 06:20:10,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60519 conditions, 21446 events. 14204/21446 cut-off events. For 34002/36164 co-relation queries the response was YES. Maximal size of possible extension queue 1191. Compared 160081 event pairs, 5509 based on Foata normal form. 2452/23345 useless extension candidates. Maximal degree in co-relation 47457. Up to 10283 conditions per place. [2023-11-29 06:20:11,006 INFO L140 encePairwiseOnDemand]: 84/91 looper letters, 0 selfloop transitions, 0 changer transitions 206/206 dead transitions. [2023-11-29 06:20:11,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 206 transitions, 1169 flow [2023-11-29 06:20:11,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:20:11,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 06:20:11,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 398 transitions. [2023-11-29 06:20:11,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7289377289377289 [2023-11-29 06:20:11,009 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 398 transitions. [2023-11-29 06:20:11,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 398 transitions. [2023-11-29 06:20:11,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:20:11,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 398 transitions. [2023-11-29 06:20:11,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 66.33333333333333) internal successors, (398), 6 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:20:11,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:20:11,012 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:20:11,012 INFO L175 Difference]: Start difference. First operand has 96 places, 82 transitions, 311 flow. Second operand 6 states and 398 transitions. [2023-11-29 06:20:11,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 206 transitions, 1169 flow [2023-11-29 06:20:11,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 206 transitions, 1151 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-29 06:20:11,282 INFO L231 Difference]: Finished difference. Result has 95 places, 0 transitions, 0 flow [2023-11-29 06:20:11,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=95, PETRI_TRANSITIONS=0} [2023-11-29 06:20:11,283 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 11 predicate places. [2023-11-29 06:20:11,283 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 0 transitions, 0 flow [2023-11-29 06:20:11,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:20:11,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 39 remaining) [2023-11-29 06:20:11,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 39 remaining) [2023-11-29 06:20:11,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 39 remaining) [2023-11-29 06:20:11,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 39 remaining) [2023-11-29 06:20:11,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 39 remaining) [2023-11-29 06:20:11,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 39 remaining) [2023-11-29 06:20:11,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 39 remaining) [2023-11-29 06:20:11,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 39 remaining) [2023-11-29 06:20:11,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 39 remaining) [2023-11-29 06:20:11,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 39 remaining) [2023-11-29 06:20:11,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 39 remaining) [2023-11-29 06:20:11,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 39 remaining) [2023-11-29 06:20:11,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 39 remaining) [2023-11-29 06:20:11,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 39 remaining) [2023-11-29 06:20:11,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 39 remaining) [2023-11-29 06:20:11,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 39 remaining) [2023-11-29 06:20:11,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 39 remaining) [2023-11-29 06:20:11,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 39 remaining) [2023-11-29 06:20:11,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 39 remaining) [2023-11-29 06:20:11,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 39 remaining) [2023-11-29 06:20:11,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 39 remaining) [2023-11-29 06:20:11,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 39 remaining) [2023-11-29 06:20:11,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 39 remaining) [2023-11-29 06:20:11,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 39 remaining) [2023-11-29 06:20:11,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 39 remaining) [2023-11-29 06:20:11,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 39 remaining) [2023-11-29 06:20:11,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 39 remaining) [2023-11-29 06:20:11,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 39 remaining) [2023-11-29 06:20:11,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 39 remaining) [2023-11-29 06:20:11,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 39 remaining) [2023-11-29 06:20:11,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 39 remaining) [2023-11-29 06:20:11,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 39 remaining) [2023-11-29 06:20:11,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 39 remaining) [2023-11-29 06:20:11,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 39 remaining) [2023-11-29 06:20:11,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 39 remaining) [2023-11-29 06:20:11,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 39 remaining) [2023-11-29 06:20:11,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 39 remaining) [2023-11-29 06:20:11,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 39 remaining) [2023-11-29 06:20:11,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 39 remaining) [2023-11-29 06:20:11,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 06:20:11,289 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:20:11,294 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 06:20:11,294 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 06:20:11,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:20:11 BasicIcfg [2023-11-29 06:20:11,298 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 06:20:11,299 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 06:20:11,299 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 06:20:11,299 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 06:20:11,299 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:19:38" (3/4) ... [2023-11-29 06:20:11,300 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 06:20:11,302 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-29 06:20:11,302 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-29 06:20:11,302 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-29 06:20:11,308 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 86 nodes and edges [2023-11-29 06:20:11,308 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2023-11-29 06:20:11,308 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-29 06:20:11,308 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-29 06:20:11,385 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c05505-a700-4684-99e6-cfe668631ffb/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 06:20:11,385 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c05505-a700-4684-99e6-cfe668631ffb/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 06:20:11,386 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 06:20:11,386 INFO L158 Benchmark]: Toolchain (without parser) took 34145.44ms. Allocated memory was 148.9MB in the beginning and 2.7GB in the end (delta: 2.6GB). Free memory was 119.8MB in the beginning and 854.9MB in the end (delta: -735.1MB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. [2023-11-29 06:20:11,387 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 148.9MB. Free memory is still 116.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 06:20:11,387 INFO L158 Benchmark]: CACSL2BoogieTranslator took 223.89ms. Allocated memory is still 148.9MB. Free memory was 119.6MB in the beginning and 108.0MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 06:20:11,388 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.50ms. Allocated memory is still 148.9MB. Free memory was 108.0MB in the beginning and 105.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 06:20:11,388 INFO L158 Benchmark]: Boogie Preprocessor took 49.58ms. Allocated memory is still 148.9MB. Free memory was 105.4MB in the beginning and 102.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 06:20:11,388 INFO L158 Benchmark]: RCFGBuilder took 817.17ms. Allocated memory is still 148.9MB. Free memory was 102.8MB in the beginning and 108.9MB in the end (delta: -6.1MB). Peak memory consumption was 61.6MB. Max. memory is 16.1GB. [2023-11-29 06:20:11,389 INFO L158 Benchmark]: TraceAbstraction took 32918.03ms. Allocated memory was 148.9MB in the beginning and 2.7GB in the end (delta: 2.6GB). Free memory was 108.3MB in the beginning and 860.1MB in the end (delta: -751.8MB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. [2023-11-29 06:20:11,389 INFO L158 Benchmark]: Witness Printer took 87.25ms. Allocated memory is still 2.7GB. Free memory was 860.1MB in the beginning and 854.9MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-29 06:20:11,391 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 148.9MB. Free memory is still 116.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 223.89ms. Allocated memory is still 148.9MB. Free memory was 119.6MB in the beginning and 108.0MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.50ms. Allocated memory is still 148.9MB. Free memory was 108.0MB in the beginning and 105.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.58ms. Allocated memory is still 148.9MB. Free memory was 105.4MB in the beginning and 102.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 817.17ms. Allocated memory is still 148.9MB. Free memory was 102.8MB in the beginning and 108.9MB in the end (delta: -6.1MB). Peak memory consumption was 61.6MB. Max. memory is 16.1GB. * TraceAbstraction took 32918.03ms. Allocated memory was 148.9MB in the beginning and 2.7GB in the end (delta: 2.6GB). Free memory was 108.3MB in the beginning and 860.1MB in the end (delta: -751.8MB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. * Witness Printer took 87.25ms. Allocated memory is still 2.7GB. Free memory was 860.1MB in the beginning and 854.9MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 149 locations, 39 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 32.8s, OverallIterations: 20, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 31.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2044 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1756 mSDsluCounter, 197 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 104 mSDsCounter, 102 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4094 IncrementalHoareTripleChecker+Invalid, 4196 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 102 mSolverCounterUnsat, 93 mSDtfsCounter, 4094 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=311occurred in iteration=19, InterpolantAutomatonStates: 93, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 230 NumberOfCodeBlocks, 230 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 210 ConstructedInterpolants, 0 QuantifiedInterpolants, 705 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 06:20:11,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c05505-a700-4684-99e6-cfe668631ffb/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE