./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-5.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_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/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_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/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_6b654715-e688-42f8-99e8-7ff12ee09a96/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 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:00:34,268 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:00:34,332 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 06:00:34,336 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:00:34,337 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:00:34,361 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:00:34,361 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:00:34,362 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:00:34,362 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:00:34,363 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:00:34,364 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:00:34,364 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:00:34,365 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:00:34,365 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:00:34,366 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:00:34,366 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:00:34,367 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:00:34,368 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:00:34,368 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:00:34,369 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:00:34,369 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:00:34,370 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:00:34,370 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:00:34,371 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:00:34,371 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 06:00:34,372 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 06:00:34,372 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:00:34,372 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:00:34,373 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:00:34,373 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:00:34,374 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:00:34,374 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:00:34,374 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:00:34,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:00:34,375 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:00:34,375 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:00:34,375 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:00:34,375 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:00:34,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:00:34,376 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:00:34,376 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:00:34,376 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:00:34,376 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:00:34,376 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:00:34,377 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_6b654715-e688-42f8-99e8-7ff12ee09a96/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f [2023-11-29 06:00:34,565 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:00:34,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:00:34,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:00:34,589 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:00:34,590 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:00:34,591 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2023-11-29 06:00:37,419 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:00:37,577 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:00:37,578 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2023-11-29 06:00:37,584 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/data/f3db7438e/ff77ec579b5a4258b70a04b2977663dc/FLAGcb3fd2478 [2023-11-29 06:00:37,596 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/data/f3db7438e/ff77ec579b5a4258b70a04b2977663dc [2023-11-29 06:00:37,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:00:37,600 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:00:37,601 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:00:37,601 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:00:37,606 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:00:37,606 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:00:37" (1/1) ... [2023-11-29 06:00:37,607 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a778060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:00:37, skipping insertion in model container [2023-11-29 06:00:37,608 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:00:37" (1/1) ... [2023-11-29 06:00:37,629 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:00:37,774 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:00:37,784 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:00:37,807 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:00:37,815 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:00:37,816 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:00:37,821 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:00:37,822 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:00:37 WrapperNode [2023-11-29 06:00:37,822 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:00:37,823 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:00:37,823 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:00:37,823 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:00:37,828 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:00:37" (1/1) ... [2023-11-29 06:00:37,835 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:00:37" (1/1) ... [2023-11-29 06:00:37,860 INFO L138 Inliner]: procedures = 22, calls = 46, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 168 [2023-11-29 06:00:37,861 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:00:37,862 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:00:37,862 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:00:37,862 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:00:37,872 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:00:37" (1/1) ... [2023-11-29 06:00:37,872 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:00:37" (1/1) ... [2023-11-29 06:00:37,875 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:00:37" (1/1) ... [2023-11-29 06:00:37,888 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 06:00:37,888 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:00:37" (1/1) ... [2023-11-29 06:00:37,888 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:00:37" (1/1) ... [2023-11-29 06:00:37,895 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:00:37" (1/1) ... [2023-11-29 06:00:37,899 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:00:37" (1/1) ... [2023-11-29 06:00:37,901 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:00:37" (1/1) ... [2023-11-29 06:00:37,902 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:00:37" (1/1) ... [2023-11-29 06:00:37,906 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:00:37,907 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:00:37,907 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:00:37,907 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:00:37,908 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:00:37" (1/1) ... [2023-11-29 06:00:37,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:00:37,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:00:37,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:00:37,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:00:37,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:00:37,972 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 06:00:37,972 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 06:00:37,972 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 06:00:37,973 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 06:00:37,973 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 06:00:37,973 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 06:00:37,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:00:37,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 06:00:37,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 06:00:37,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 06:00:37,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 06:00:37,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 06:00:37,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 06:00:37,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 06:00:37,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 06:00:37,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 06:00:37,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 06:00:37,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:00:37,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:00:37,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 06:00:37,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 06:00:37,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 06:00:37,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 06:00:37,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 06:00:37,978 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 06:00:38,086 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:00:38,089 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:00:38,333 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:00:38,597 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:00:38,597 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 06:00:38,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:00:38 BoogieIcfgContainer [2023-11-29 06:00:38,598 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:00:38,600 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:00:38,601 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:00:38,604 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:00:38,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:00:37" (1/3) ... [2023-11-29 06:00:38,605 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23702bb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:00:38, skipping insertion in model container [2023-11-29 06:00:38,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:00:37" (2/3) ... [2023-11-29 06:00:38,605 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23702bb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:00:38, skipping insertion in model container [2023-11-29 06:00:38,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:00:38" (3/3) ... [2023-11-29 06:00:38,607 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2023-11-29 06:00:38,617 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 06:00:38,628 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:00:38,628 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-29 06:00:38,628 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 06:00:38,698 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 06:00:38,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 53 transitions, 127 flow [2023-11-29 06:00:38,770 INFO L124 PetriNetUnfolderBase]: 4/50 cut-off events. [2023-11-29 06:00:38,771 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 06:00:38,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 50 events. 4/50 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 182 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2023-11-29 06:00:38,775 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 53 transitions, 127 flow [2023-11-29 06:00:38,779 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 46 transitions, 104 flow [2023-11-29 06:00:38,786 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:00:38,791 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;@63d3e974, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:00:38,792 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-11-29 06:00:38,800 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 06:00:38,801 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2023-11-29 06:00:38,801 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 06:00:38,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:00:38,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:00:38,802 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-29 06:00:38,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:00:38,806 INFO L85 PathProgramCache]: Analyzing trace with hash -582876261, now seen corresponding path program 1 times [2023-11-29 06:00:38,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:00:38,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343707287] [2023-11-29 06:00:38,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:00:38,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:00:38,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:00:39,067 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 06:00:39,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:00:39,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343707287] [2023-11-29 06:00:39,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343707287] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:00:39,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:00:39,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 06:00:39,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840691026] [2023-11-29 06:00:39,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:00:39,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:00:39,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:00:39,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:00:39,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:00:39,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2023-11-29 06:00:39,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 06:00:39,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:00:39,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2023-11-29 06:00:39,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:00:39,906 INFO L124 PetriNetUnfolderBase]: 4035/6022 cut-off events. [2023-11-29 06:00:39,906 INFO L125 PetriNetUnfolderBase]: For 394/394 co-relation queries the response was YES. [2023-11-29 06:00:39,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12455 conditions, 6022 events. 4035/6022 cut-off events. For 394/394 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 36655 event pairs, 1317 based on Foata normal form. 0/3368 useless extension candidates. Maximal degree in co-relation 11894. Up to 3341 conditions per place. [2023-11-29 06:00:39,965 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 57 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2023-11-29 06:00:39,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 74 transitions, 301 flow [2023-11-29 06:00:39,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:00:39,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:00:39,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2023-11-29 06:00:39,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6729559748427673 [2023-11-29 06:00:39,978 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 107 transitions. [2023-11-29 06:00:39,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 107 transitions. [2023-11-29 06:00:39,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:00:39,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 107 transitions. [2023-11-29 06:00:39,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 06:00:39,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 06:00:39,988 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 06:00:39,990 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 104 flow. Second operand 3 states and 107 transitions. [2023-11-29 06:00:39,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 74 transitions, 301 flow [2023-11-29 06:00:39,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 74 transitions, 291 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 06:00:40,000 INFO L231 Difference]: Finished difference. Result has 50 places, 52 transitions, 170 flow [2023-11-29 06:00:40,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=50, PETRI_TRANSITIONS=52} [2023-11-29 06:00:40,005 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -2 predicate places. [2023-11-29 06:00:40,006 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 52 transitions, 170 flow [2023-11-29 06:00:40,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 06:00:40,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:00:40,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:00:40,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 06:00:40,007 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-29 06:00:40,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:00:40,007 INFO L85 PathProgramCache]: Analyzing trace with hash -582876260, now seen corresponding path program 1 times [2023-11-29 06:00:40,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:00:40,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154421309] [2023-11-29 06:00:40,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:00:40,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:00:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:00:40,092 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 06:00:40,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:00:40,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154421309] [2023-11-29 06:00:40,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154421309] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:00:40,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:00:40,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 06:00:40,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654129616] [2023-11-29 06:00:40,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:00:40,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:00:40,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:00:40,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:00:40,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:00:40,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2023-11-29 06:00:40,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 52 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 06:00:40,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:00:40,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2023-11-29 06:00:40,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:00:40,927 INFO L124 PetriNetUnfolderBase]: 6039/8808 cut-off events. [2023-11-29 06:00:40,927 INFO L125 PetriNetUnfolderBase]: For 1506/1506 co-relation queries the response was YES. [2023-11-29 06:00:40,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20903 conditions, 8808 events. 6039/8808 cut-off events. For 1506/1506 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 53244 event pairs, 1295 based on Foata normal form. 360/6166 useless extension candidates. Maximal degree in co-relation 17652. Up to 5835 conditions per place. [2023-11-29 06:00:41,002 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 67 selfloop transitions, 11 changer transitions 0/86 dead transitions. [2023-11-29 06:00:41,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 86 transitions, 431 flow [2023-11-29 06:00:41,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:00:41,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:00:41,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2023-11-29 06:00:41,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6477987421383647 [2023-11-29 06:00:41,005 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 103 transitions. [2023-11-29 06:00:41,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 103 transitions. [2023-11-29 06:00:41,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:00:41,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 103 transitions. [2023-11-29 06:00:41,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 06:00:41,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 06:00:41,008 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 06:00:41,008 INFO L175 Difference]: Start difference. First operand has 50 places, 52 transitions, 170 flow. Second operand 3 states and 103 transitions. [2023-11-29 06:00:41,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 86 transitions, 431 flow [2023-11-29 06:00:41,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 86 transitions, 405 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:00:41,049 INFO L231 Difference]: Finished difference. Result has 52 places, 62 transitions, 260 flow [2023-11-29 06:00:41,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=52, PETRI_TRANSITIONS=62} [2023-11-29 06:00:41,050 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2023-11-29 06:00:41,051 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 62 transitions, 260 flow [2023-11-29 06:00:41,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 06:00:41,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:00:41,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:00:41,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 06:00:41,051 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-29 06:00:41,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:00:41,052 INFO L85 PathProgramCache]: Analyzing trace with hash -582876259, now seen corresponding path program 1 times [2023-11-29 06:00:41,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:00:41,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126529744] [2023-11-29 06:00:41,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:00:41,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:00:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:00:41,125 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 06:00:41,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:00:41,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126529744] [2023-11-29 06:00:41,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126529744] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:00:41,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:00:41,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 06:00:41,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135448369] [2023-11-29 06:00:41,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:00:41,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:00:41,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:00:41,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:00:41,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:00:41,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2023-11-29 06:00:41,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 62 transitions, 260 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 06:00:41,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:00:41,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2023-11-29 06:00:41,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:00:41,968 INFO L124 PetriNetUnfolderBase]: 5641/8218 cut-off events. [2023-11-29 06:00:41,969 INFO L125 PetriNetUnfolderBase]: For 2326/2326 co-relation queries the response was YES. [2023-11-29 06:00:41,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21935 conditions, 8218 events. 5641/8218 cut-off events. For 2326/2326 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 49858 event pairs, 3445 based on Foata normal form. 0/5782 useless extension candidates. Maximal degree in co-relation 18932. Up to 7952 conditions per place. [2023-11-29 06:00:42,020 INFO L140 encePairwiseOnDemand]: 51/53 looper letters, 51 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2023-11-29 06:00:42,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 60 transitions, 354 flow [2023-11-29 06:00:42,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:00:42,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:00:42,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2023-11-29 06:00:42,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4339622641509434 [2023-11-29 06:00:42,022 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 69 transitions. [2023-11-29 06:00:42,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 69 transitions. [2023-11-29 06:00:42,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:00:42,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 69 transitions. [2023-11-29 06:00:42,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 06:00:42,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 06:00:42,025 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 06:00:42,025 INFO L175 Difference]: Start difference. First operand has 52 places, 62 transitions, 260 flow. Second operand 3 states and 69 transitions. [2023-11-29 06:00:42,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 60 transitions, 354 flow [2023-11-29 06:00:42,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 60 transitions, 334 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:00:42,063 INFO L231 Difference]: Finished difference. Result has 51 places, 60 transitions, 232 flow [2023-11-29 06:00:42,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=51, PETRI_TRANSITIONS=60} [2023-11-29 06:00:42,064 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -1 predicate places. [2023-11-29 06:00:42,064 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 60 transitions, 232 flow [2023-11-29 06:00:42,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 06:00:42,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:00:42,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:00:42,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 06:00:42,065 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-29 06:00:42,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:00:42,065 INFO L85 PathProgramCache]: Analyzing trace with hash -582876258, now seen corresponding path program 1 times [2023-11-29 06:00:42,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:00:42,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044045544] [2023-11-29 06:00:42,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:00:42,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:00:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:00:42,177 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 06:00:42,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:00:42,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044045544] [2023-11-29 06:00:42,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044045544] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:00:42,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:00:42,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 06:00:42,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583790978] [2023-11-29 06:00:42,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:00:42,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:00:42,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:00:42,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:00:42,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:00:42,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2023-11-29 06:00:42,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 60 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 06:00:42,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:00:42,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2023-11-29 06:00:42,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:00:43,013 INFO L124 PetriNetUnfolderBase]: 6537/9802 cut-off events. [2023-11-29 06:00:43,013 INFO L125 PetriNetUnfolderBase]: For 2030/2030 co-relation queries the response was YES. [2023-11-29 06:00:43,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25353 conditions, 9802 events. 6537/9802 cut-off events. For 2030/2030 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 63301 event pairs, 2493 based on Foata normal form. 332/7096 useless extension candidates. Maximal degree in co-relation 25343. Up to 5455 conditions per place. [2023-11-29 06:00:43,064 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 89 selfloop transitions, 3 changer transitions 0/100 dead transitions. [2023-11-29 06:00:43,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 100 transitions, 573 flow [2023-11-29 06:00:43,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:00:43,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:00:43,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2023-11-29 06:00:43,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6352201257861635 [2023-11-29 06:00:43,066 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 101 transitions. [2023-11-29 06:00:43,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 101 transitions. [2023-11-29 06:00:43,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:00:43,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 101 transitions. [2023-11-29 06:00:43,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 06:00:43,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 06:00:43,069 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 06:00:43,069 INFO L175 Difference]: Start difference. First operand has 51 places, 60 transitions, 232 flow. Second operand 3 states and 101 transitions. [2023-11-29 06:00:43,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 100 transitions, 573 flow [2023-11-29 06:00:43,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 100 transitions, 572 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:00:43,073 INFO L231 Difference]: Finished difference. Result has 53 places, 62 transitions, 272 flow [2023-11-29 06:00:43,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=53, PETRI_TRANSITIONS=62} [2023-11-29 06:00:43,074 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2023-11-29 06:00:43,075 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 62 transitions, 272 flow [2023-11-29 06:00:43,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 06:00:43,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:00:43,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:00:43,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 06:00:43,075 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-29 06:00:43,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:00:43,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1054407237, now seen corresponding path program 1 times [2023-11-29 06:00:43,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:00:43,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004416970] [2023-11-29 06:00:43,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:00:43,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:00:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:00:43,140 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 06:00:43,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:00:43,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004416970] [2023-11-29 06:00:43,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004416970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:00:43,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:00:43,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 06:00:43,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364693320] [2023-11-29 06:00:43,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:00:43,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:00:43,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:00:43,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:00:43,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:00:43,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2023-11-29 06:00:43,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 62 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 06:00:43,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:00:43,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2023-11-29 06:00:43,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:00:43,982 INFO L124 PetriNetUnfolderBase]: 7245/10988 cut-off events. [2023-11-29 06:00:43,982 INFO L125 PetriNetUnfolderBase]: For 3248/3248 co-relation queries the response was YES. [2023-11-29 06:00:43,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30139 conditions, 10988 events. 7245/10988 cut-off events. For 3248/3248 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 72447 event pairs, 2057 based on Foata normal form. 254/7873 useless extension candidates. Maximal degree in co-relation 30127. Up to 6963 conditions per place. [2023-11-29 06:00:44,031 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 89 selfloop transitions, 5 changer transitions 0/102 dead transitions. [2023-11-29 06:00:44,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 102 transitions, 649 flow [2023-11-29 06:00:44,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:00:44,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:00:44,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2023-11-29 06:00:44,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6226415094339622 [2023-11-29 06:00:44,033 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 99 transitions. [2023-11-29 06:00:44,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 99 transitions. [2023-11-29 06:00:44,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:00:44,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 99 transitions. [2023-11-29 06:00:44,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 06:00:44,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 06:00:44,036 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 06:00:44,036 INFO L175 Difference]: Start difference. First operand has 53 places, 62 transitions, 272 flow. Second operand 3 states and 99 transitions. [2023-11-29 06:00:44,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 102 transitions, 649 flow [2023-11-29 06:00:44,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 102 transitions, 644 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:00:44,041 INFO L231 Difference]: Finished difference. Result has 56 places, 66 transitions, 333 flow [2023-11-29 06:00:44,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=333, PETRI_PLACES=56, PETRI_TRANSITIONS=66} [2023-11-29 06:00:44,042 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2023-11-29 06:00:44,042 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 66 transitions, 333 flow [2023-11-29 06:00:44,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 06:00:44,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:00:44,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:00:44,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 06:00:44,043 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-29 06:00:44,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:00:44,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1054407236, now seen corresponding path program 1 times [2023-11-29 06:00:44,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:00:44,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817715766] [2023-11-29 06:00:44,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:00:44,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:00:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:00:44,083 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 06:00:44,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:00:44,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817715766] [2023-11-29 06:00:44,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817715766] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:00:44,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:00:44,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 06:00:44,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138058685] [2023-11-29 06:00:44,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:00:44,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:00:44,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:00:44,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:00:44,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:00:44,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2023-11-29 06:00:44,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 66 transitions, 333 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 06:00:44,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:00:44,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2023-11-29 06:00:44,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:00:44,935 INFO L124 PetriNetUnfolderBase]: 6657/10170 cut-off events. [2023-11-29 06:00:44,935 INFO L125 PetriNetUnfolderBase]: For 5296/5296 co-relation queries the response was YES. [2023-11-29 06:00:44,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29212 conditions, 10170 events. 6657/10170 cut-off events. For 5296/5296 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 68283 event pairs, 5029 based on Foata normal form. 370/7631 useless extension candidates. Maximal degree in co-relation 29197. Up to 9858 conditions per place. [2023-11-29 06:00:44,986 INFO L140 encePairwiseOnDemand]: 51/53 looper letters, 53 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2023-11-29 06:00:44,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 62 transitions, 413 flow [2023-11-29 06:00:44,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:00:44,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:00:44,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2023-11-29 06:00:44,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4276729559748428 [2023-11-29 06:00:44,987 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 68 transitions. [2023-11-29 06:00:44,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 68 transitions. [2023-11-29 06:00:44,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:00:44,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 68 transitions. [2023-11-29 06:00:44,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 06:00:44,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 06:00:44,990 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 06:00:44,990 INFO L175 Difference]: Start difference. First operand has 56 places, 66 transitions, 333 flow. Second operand 3 states and 68 transitions. [2023-11-29 06:00:44,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 62 transitions, 413 flow [2023-11-29 06:00:44,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 407 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:00:44,994 INFO L231 Difference]: Finished difference. Result has 55 places, 62 transitions, 301 flow [2023-11-29 06:00:44,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=301, PETRI_PLACES=55, PETRI_TRANSITIONS=62} [2023-11-29 06:00:44,995 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2023-11-29 06:00:44,995 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 62 transitions, 301 flow [2023-11-29 06:00:44,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 06:00:44,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:00:44,996 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:00:44,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 06:00:44,996 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-29 06:00:44,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:00:44,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1608605740, now seen corresponding path program 1 times [2023-11-29 06:00:44,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:00:44,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106106984] [2023-11-29 06:00:44,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:00:44,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:00:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:00:45,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:00:45,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:00:45,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106106984] [2023-11-29 06:00:45,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106106984] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:00:45,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777244933] [2023-11-29 06:00:45,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:00:45,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:00:45,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:00:45,060 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:00:45,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:00:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:00:45,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 06:00:45,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:00:45,214 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:00:45,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:00:45,251 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:00:45,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777244933] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:00:45,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:00:45,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-29 06:00:45,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249886445] [2023-11-29 06:00:45,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:00:45,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:00:45,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:00:45,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:00:45,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:00:45,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2023-11-29 06:00:45,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 62 transitions, 301 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 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 06:00:45,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:00:45,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2023-11-29 06:00:45,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:00:47,582 INFO L124 PetriNetUnfolderBase]: 20193/30042 cut-off events. [2023-11-29 06:00:47,582 INFO L125 PetriNetUnfolderBase]: For 14670/14670 co-relation queries the response was YES. [2023-11-29 06:00:47,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84020 conditions, 30042 events. 20193/30042 cut-off events. For 14670/14670 co-relation queries the response was YES. Maximal size of possible extension queue 1239. Compared 210776 event pairs, 795 based on Foata normal form. 892/22584 useless extension candidates. Maximal degree in co-relation 84005. Up to 8583 conditions per place. [2023-11-29 06:00:47,715 INFO L140 encePairwiseOnDemand]: 36/53 looper letters, 139 selfloop transitions, 65 changer transitions 0/212 dead transitions. [2023-11-29 06:00:47,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 212 transitions, 1330 flow [2023-11-29 06:00:47,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:00:47,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 06:00:47,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 257 transitions. [2023-11-29 06:00:47,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.692722371967655 [2023-11-29 06:00:47,717 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 257 transitions. [2023-11-29 06:00:47,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 257 transitions. [2023-11-29 06:00:47,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:00:47,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 257 transitions. [2023-11-29 06:00:47,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 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 06:00:47,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 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 06:00:47,721 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 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 06:00:47,721 INFO L175 Difference]: Start difference. First operand has 55 places, 62 transitions, 301 flow. Second operand 7 states and 257 transitions. [2023-11-29 06:00:47,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 212 transitions, 1330 flow [2023-11-29 06:00:47,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 212 transitions, 1329 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:00:47,733 INFO L231 Difference]: Finished difference. Result has 64 places, 120 transitions, 1018 flow [2023-11-29 06:00:47,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1018, PETRI_PLACES=64, PETRI_TRANSITIONS=120} [2023-11-29 06:00:47,733 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 12 predicate places. [2023-11-29 06:00:47,734 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 120 transitions, 1018 flow [2023-11-29 06:00:47,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 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 06:00:47,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:00:47,734 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:00:47,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:00:47,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:00:47,935 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-29 06:00:47,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:00:47,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1608605738, now seen corresponding path program 1 times [2023-11-29 06:00:47,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:00:47,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338157230] [2023-11-29 06:00:47,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:00:47,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:00:47,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:00:47,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:00:47,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:00:47,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338157230] [2023-11-29 06:00:47,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338157230] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:00:47,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106740965] [2023-11-29 06:00:47,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:00:47,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:00:47,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:00:47,995 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:00:48,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:00:48,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:00:48,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 06:00:48,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:00:48,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:00:48,105 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:00:48,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:00:48,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106740965] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:00:48,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:00:48,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-29 06:00:48,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001297428] [2023-11-29 06:00:48,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:00:48,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:00:48,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:00:48,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:00:48,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:00:48,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2023-11-29 06:00:48,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 120 transitions, 1018 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 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 06:00:48,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:00:48,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2023-11-29 06:00:48,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:00:54,155 INFO L124 PetriNetUnfolderBase]: 41757/62928 cut-off events. [2023-11-29 06:00:54,155 INFO L125 PetriNetUnfolderBase]: For 137768/137768 co-relation queries the response was YES. [2023-11-29 06:00:54,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219031 conditions, 62928 events. 41757/62928 cut-off events. For 137768/137768 co-relation queries the response was YES. Maximal size of possible extension queue 1967. Compared 479609 event pairs, 9001 based on Foata normal form. 634/49204 useless extension candidates. Maximal degree in co-relation 219011. Up to 14718 conditions per place. [2023-11-29 06:00:54,505 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 377 selfloop transitions, 43 changer transitions 0/428 dead transitions. [2023-11-29 06:00:54,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 428 transitions, 4507 flow [2023-11-29 06:00:54,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:00:54,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 06:00:54,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 228 transitions. [2023-11-29 06:00:54,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7169811320754716 [2023-11-29 06:00:54,506 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 228 transitions. [2023-11-29 06:00:54,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 228 transitions. [2023-11-29 06:00:54,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:00:54,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 228 transitions. [2023-11-29 06:00:54,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 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 06:00:54,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 53.0) internal successors, (371), 7 states have internal predecessors, (371), 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 06:00:54,508 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 53.0) internal successors, (371), 7 states have internal predecessors, (371), 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 06:00:54,508 INFO L175 Difference]: Start difference. First operand has 64 places, 120 transitions, 1018 flow. Second operand 6 states and 228 transitions. [2023-11-29 06:00:54,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 428 transitions, 4507 flow [2023-11-29 06:00:55,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 428 transitions, 4399 flow, removed 54 selfloop flow, removed 0 redundant places. [2023-11-29 06:00:55,699 INFO L231 Difference]: Finished difference. Result has 73 places, 152 transitions, 1565 flow [2023-11-29 06:00:55,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1565, PETRI_PLACES=73, PETRI_TRANSITIONS=152} [2023-11-29 06:00:55,700 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 21 predicate places. [2023-11-29 06:00:55,700 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 152 transitions, 1565 flow [2023-11-29 06:00:55,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 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 06:00:55,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:00:55,700 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:00:55,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 06:00:55,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:00:55,901 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-29 06:00:55,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:00:55,902 INFO L85 PathProgramCache]: Analyzing trace with hash -628889795, now seen corresponding path program 1 times [2023-11-29 06:00:55,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:00:55,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23607629] [2023-11-29 06:00:55,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:00:55,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:00:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:00:55,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:00:55,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:00:55,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23607629] [2023-11-29 06:00:55,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23607629] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:00:55,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410991771] [2023-11-29 06:00:55,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:00:55,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:00:55,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:00:55,953 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:00:55,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:00:56,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:00:56,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:00:56,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:00:56,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:00:56,105 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:00:56,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:00:56,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410991771] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:00:56,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:00:56,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-11-29 06:00:56,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358056252] [2023-11-29 06:00:56,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:00:56,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:00:56,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:00:56,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:00:56,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:00:56,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2023-11-29 06:00:56,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 152 transitions, 1565 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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 06:00:56,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:00:56,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2023-11-29 06:00:56,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:01:11,753 INFO L124 PetriNetUnfolderBase]: 99045/149466 cut-off events. [2023-11-29 06:01:11,753 INFO L125 PetriNetUnfolderBase]: For 542166/542166 co-relation queries the response was YES. [2023-11-29 06:01:12,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 551449 conditions, 149466 events. 99045/149466 cut-off events. For 542166/542166 co-relation queries the response was YES. Maximal size of possible extension queue 4647. Compared 1264016 event pairs, 6431 based on Foata normal form. 1908/123080 useless extension candidates. Maximal degree in co-relation 551423. Up to 36799 conditions per place. [2023-11-29 06:01:12,799 INFO L140 encePairwiseOnDemand]: 36/53 looper letters, 498 selfloop transitions, 175 changer transitions 0/681 dead transitions. [2023-11-29 06:01:12,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 681 transitions, 8183 flow [2023-11-29 06:01:12,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 06:01:12,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 06:01:12,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 366 transitions. [2023-11-29 06:01:12,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.690566037735849 [2023-11-29 06:01:12,801 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 366 transitions. [2023-11-29 06:01:12,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 366 transitions. [2023-11-29 06:01:12,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:01:12,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 366 transitions. [2023-11-29 06:01:12,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 36.6) internal successors, (366), 10 states have internal predecessors, (366), 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 06:01:12,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 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 06:01:12,804 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 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 06:01:12,804 INFO L175 Difference]: Start difference. First operand has 73 places, 152 transitions, 1565 flow. Second operand 10 states and 366 transitions. [2023-11-29 06:01:12,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 681 transitions, 8183 flow [2023-11-29 06:01:32,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 681 transitions, 8183 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 06:01:32,047 INFO L231 Difference]: Finished difference. Result has 90 places, 308 transitions, 4393 flow [2023-11-29 06:01:32,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1528, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4393, PETRI_PLACES=90, PETRI_TRANSITIONS=308} [2023-11-29 06:01:32,048 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 38 predicate places. [2023-11-29 06:01:32,048 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 308 transitions, 4393 flow [2023-11-29 06:01:32,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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 06:01:32,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:01:32,048 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:01:32,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 06:01:32,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 06:01:32,249 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-29 06:01:32,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:01:32,249 INFO L85 PathProgramCache]: Analyzing trace with hash 811445807, now seen corresponding path program 1 times [2023-11-29 06:01:32,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:01:32,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542613521] [2023-11-29 06:01:32,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:01:32,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:01:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:01:32,279 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 06:01:32,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:01:32,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542613521] [2023-11-29 06:01:32,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542613521] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:01:32,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:01:32,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:01:32,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373204722] [2023-11-29 06:01:32,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:01:32,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:01:32,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:01:32,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:01:32,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:01:32,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2023-11-29 06:01:32,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 308 transitions, 4393 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 06:01:32,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:01:32,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2023-11-29 06:01:32,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:01:47,956 INFO L124 PetriNetUnfolderBase]: 78889/119172 cut-off events. [2023-11-29 06:01:47,956 INFO L125 PetriNetUnfolderBase]: For 831690/831690 co-relation queries the response was YES. [2023-11-29 06:01:48,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497817 conditions, 119172 events. 78889/119172 cut-off events. For 831690/831690 co-relation queries the response was YES. Maximal size of possible extension queue 3705. Compared 1011530 event pairs, 54211 based on Foata normal form. 7738/103903 useless extension candidates. Maximal degree in co-relation 497781. Up to 113874 conditions per place. [2023-11-29 06:01:48,819 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 281 selfloop transitions, 1 changer transitions 0/290 dead transitions. [2023-11-29 06:01:48,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 290 transitions, 4763 flow [2023-11-29 06:01:48,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:01:48,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:01:48,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2023-11-29 06:01:48,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42138364779874216 [2023-11-29 06:01:48,820 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 67 transitions. [2023-11-29 06:01:48,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 67 transitions. [2023-11-29 06:01:48,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:01:48,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 67 transitions. [2023-11-29 06:01:48,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 06:01:48,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 06:01:48,821 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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 06:01:48,821 INFO L175 Difference]: Start difference. First operand has 90 places, 308 transitions, 4393 flow. Second operand 3 states and 67 transitions. [2023-11-29 06:01:48,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 290 transitions, 4763 flow [2023-11-29 06:02:04,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 290 transitions, 4666 flow, removed 47 selfloop flow, removed 1 redundant places. [2023-11-29 06:02:04,453 INFO L231 Difference]: Finished difference. Result has 89 places, 290 transitions, 4104 flow [2023-11-29 06:02:04,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4102, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=4104, PETRI_PLACES=89, PETRI_TRANSITIONS=290} [2023-11-29 06:02:04,454 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 37 predicate places. [2023-11-29 06:02:04,454 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 290 transitions, 4104 flow [2023-11-29 06:02:04,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 06:02:04,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:02:04,454 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:02:04,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 06:02:04,454 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-29 06:02:04,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:02:04,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1669359527, now seen corresponding path program 1 times [2023-11-29 06:02:04,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:02:04,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33993229] [2023-11-29 06:02:04,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:02:04,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:02:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:04,515 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:02:04,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:02:04,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33993229] [2023-11-29 06:02:04,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33993229] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:02:04,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257492034] [2023-11-29 06:02:04,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:02:04,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:02:04,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:02:04,516 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:02:04,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:02:04,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:02:04,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 06:02:04,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:02:04,629 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:02:04,629 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:02:04,654 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:02:04,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257492034] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:02:04,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:02:04,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-29 06:02:04,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614810334] [2023-11-29 06:02:04,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:02:04,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:02:04,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:02:04,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:02:04,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:02:04,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2023-11-29 06:02:04,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 290 transitions, 4104 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 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 06:02:04,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:02:04,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2023-11-29 06:02:04,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:02:35,777 INFO L124 PetriNetUnfolderBase]: 144469/220174 cut-off events. [2023-11-29 06:02:35,777 INFO L125 PetriNetUnfolderBase]: For 1500598/1500598 co-relation queries the response was YES. [2023-11-29 06:02:36,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 882512 conditions, 220174 events. 144469/220174 cut-off events. For 1500598/1500598 co-relation queries the response was YES. Maximal size of possible extension queue 6849. Compared 1984262 event pairs, 33827 based on Foata normal form. 6630/189031 useless extension candidates. Maximal degree in co-relation 882475. Up to 62736 conditions per place. [2023-11-29 06:02:37,654 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 581 selfloop transitions, 101 changer transitions 0/690 dead transitions. [2023-11-29 06:02:37,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 690 transitions, 11200 flow [2023-11-29 06:02:37,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:02:37,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 06:02:37,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2023-11-29 06:02:37,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5723270440251572 [2023-11-29 06:02:37,656 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 182 transitions. [2023-11-29 06:02:37,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 182 transitions. [2023-11-29 06:02:37,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:02:37,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 182 transitions. [2023-11-29 06:02:37,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:02:37,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 53.0) internal successors, (371), 7 states have internal predecessors, (371), 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 06:02:37,659 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 53.0) internal successors, (371), 7 states have internal predecessors, (371), 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 06:02:37,659 INFO L175 Difference]: Start difference. First operand has 89 places, 290 transitions, 4104 flow. Second operand 6 states and 182 transitions. [2023-11-29 06:02:37,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 690 transitions, 11200 flow [2023-11-29 06:03:50,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 690 transitions, 11199 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:03:50,995 INFO L231 Difference]: Finished difference. Result has 95 places, 338 transitions, 5182 flow [2023-11-29 06:03:50,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3909, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5182, PETRI_PLACES=95, PETRI_TRANSITIONS=338} [2023-11-29 06:03:50,995 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 43 predicate places. [2023-11-29 06:03:50,996 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 338 transitions, 5182 flow [2023-11-29 06:03:50,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 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 06:03:50,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:03:50,996 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 06:03:51,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 06:03:51,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 06:03:51,197 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-29 06:03:51,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:03:51,197 INFO L85 PathProgramCache]: Analyzing trace with hash 2044105355, now seen corresponding path program 1 times [2023-11-29 06:03:51,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:03:51,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789997351] [2023-11-29 06:03:51,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:51,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:03:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:03:51,272 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 06:03:51,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:03:51,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789997351] [2023-11-29 06:03:51,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789997351] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:03:51,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095744111] [2023-11-29 06:03:51,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:51,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:03:51,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:03:51,275 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:03:51,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 06:03:51,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:03:51,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:03:51,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:03:51,407 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 06:03:51,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:03:51,453 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 06:03:51,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095744111] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:03:51,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:03:51,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-29 06:03:51,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688552232] [2023-11-29 06:03:51,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:03:51,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:03:51,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:03:51,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:03:51,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:03:51,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2023-11-29 06:03:51,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 338 transitions, 5182 flow. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 8 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:03:51,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:03:51,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2023-11-29 06:03:51,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:05:04,982 INFO L124 PetriNetUnfolderBase]: 317281/474060 cut-off events. [2023-11-29 06:05:04,982 INFO L125 PetriNetUnfolderBase]: For 4387690/4387690 co-relation queries the response was YES. [2023-11-29 06:05:06,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1998138 conditions, 474060 events. 317281/474060 cut-off events. For 4387690/4387690 co-relation queries the response was YES. Maximal size of possible extension queue 10572. Compared 4328724 event pairs, 44427 based on Foata normal form. 28934/415612 useless extension candidates. Maximal degree in co-relation 1998097. Up to 145094 conditions per place. [2023-11-29 06:05:09,135 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 275 selfloop transitions, 613 changer transitions 0/896 dead transitions. [2023-11-29 06:05:09,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 896 transitions, 15031 flow [2023-11-29 06:05:09,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:05:09,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 06:05:09,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 264 transitions. [2023-11-29 06:05:09,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6226415094339622 [2023-11-29 06:05:09,138 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 264 transitions. [2023-11-29 06:05:09,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 264 transitions. [2023-11-29 06:05:09,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:05:09,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 264 transitions. [2023-11-29 06:05:09,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 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 06:05:09,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:05:09,140 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:05:09,141 INFO L175 Difference]: Start difference. First operand has 95 places, 338 transitions, 5182 flow. Second operand 8 states and 264 transitions. [2023-11-29 06:05:09,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 896 transitions, 15031 flow [2023-11-29 06:07:53,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 896 transitions, 14639 flow, removed 110 selfloop flow, removed 4 redundant places. [2023-11-29 06:07:53,251 INFO L231 Difference]: Finished difference. Result has 103 places, 787 transitions, 14941 flow [2023-11-29 06:07:53,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=4685, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14941, PETRI_PLACES=103, PETRI_TRANSITIONS=787} [2023-11-29 06:07:53,252 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 51 predicate places. [2023-11-29 06:07:53,252 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 787 transitions, 14941 flow [2023-11-29 06:07:53,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 8 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:07:53,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:07:53,253 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1] [2023-11-29 06:07:53,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 06:07:53,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 06:07:53,453 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-29 06:07:53,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:07:53,454 INFO L85 PathProgramCache]: Analyzing trace with hash -715699076, now seen corresponding path program 2 times [2023-11-29 06:07:53,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:07:53,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154062014] [2023-11-29 06:07:53,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:07:53,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:07:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:07:53,531 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:07:53,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:07:53,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154062014] [2023-11-29 06:07:53,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154062014] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:07:53,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601657064] [2023-11-29 06:07:53,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:07:53,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:07:53,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:07:53,533 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:07:53,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b654715-e688-42f8-99e8-7ff12ee09a96/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 06:07:53,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:07:53,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:07:53,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 06:07:53,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:07:53,639 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:07:53,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:07:53,703 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:07:53,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601657064] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:07:53,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:07:53,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-29 06:07:53,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231375363] [2023-11-29 06:07:53,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:07:53,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 06:07:53,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:07:53,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 06:07:53,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:07:53,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2023-11-29 06:07:53,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 787 transitions, 14941 flow. Second operand has 13 states, 13 states have (on average 14.0) internal successors, (182), 13 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:07:53,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:07:53,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2023-11-29 06:07:53,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand