./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/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_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/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_03278493-3ea9-416b-98a2-0dcdb344bce9/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 ceb2af5016fd0ad74653237fbc44a2b3541e4ff971325e3807dab6f19c05af6d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:10:48,771 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:10:48,836 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 02:10:48,840 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:10:48,840 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:10:48,872 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:10:48,881 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:10:48,882 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:10:48,882 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:10:48,883 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:10:48,883 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:10:48,884 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:10:48,885 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:10:48,885 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:10:48,886 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:10:48,886 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:10:48,887 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:10:48,887 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:10:48,888 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:10:48,888 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:10:48,888 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:10:48,889 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:10:48,890 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:10:48,890 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:10:48,890 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 02:10:48,891 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 02:10:48,891 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:10:48,891 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:10:48,892 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:10:48,892 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:10:48,893 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:10:48,893 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:10:48,893 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:10:48,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:10:48,894 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:10:48,894 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:10:48,894 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:10:48,895 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:10:48,895 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:10:48,895 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:10:48,895 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:10:48,895 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:10:48,896 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:10:48,896 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:10:48,896 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_03278493-3ea9-416b-98a2-0dcdb344bce9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ceb2af5016fd0ad74653237fbc44a2b3541e4ff971325e3807dab6f19c05af6d [2023-11-29 02:10:49,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:10:49,135 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:10:49,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:10:49,139 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:10:49,139 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:10:49,140 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c [2023-11-29 02:10:51,809 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:10:51,997 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:10:51,997 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c [2023-11-29 02:10:52,007 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/data/3af6f47bb/94c013c3300941fea183009f957cec16/FLAGb8b5f5dcc [2023-11-29 02:10:52,020 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/data/3af6f47bb/94c013c3300941fea183009f957cec16 [2023-11-29 02:10:52,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:10:52,024 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:10:52,025 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:10:52,025 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:10:52,029 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:10:52,030 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:10:52" (1/1) ... [2023-11-29 02:10:52,031 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36fe8b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:10:52, skipping insertion in model container [2023-11-29 02:10:52,031 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:10:52" (1/1) ... [2023-11-29 02:10:52,061 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:10:52,232 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:10:52,242 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:10:52,273 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:10:52,283 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:10:52,283 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:10:52,290 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:10:52,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:10:52 WrapperNode [2023-11-29 02:10:52,291 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:10:52,292 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:10:52,292 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:10:52,292 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:10:52,298 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:10:52" (1/1) ... [2023-11-29 02:10:52,306 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:10:52" (1/1) ... [2023-11-29 02:10:52,333 INFO L138 Inliner]: procedures = 25, calls = 56, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 285 [2023-11-29 02:10:52,334 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:10:52,334 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:10:52,334 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:10:52,334 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:10:52,343 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:10:52" (1/1) ... [2023-11-29 02:10:52,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:10:52" (1/1) ... [2023-11-29 02:10:52,346 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:10:52" (1/1) ... [2023-11-29 02:10:52,362 INFO L175 MemorySlicer]: Split 15 memory accesses to 5 slices as follows [2, 7, 2, 2, 2]. 47 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 5 writes are split as follows [0, 2, 1, 1, 1]. [2023-11-29 02:10:52,362 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:10:52" (1/1) ... [2023-11-29 02:10:52,362 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:10:52" (1/1) ... [2023-11-29 02:10:52,373 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:10:52" (1/1) ... [2023-11-29 02:10:52,378 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:10:52" (1/1) ... [2023-11-29 02:10:52,381 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:10:52" (1/1) ... [2023-11-29 02:10:52,383 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:10:52" (1/1) ... [2023-11-29 02:10:52,388 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:10:52,389 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:10:52,389 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:10:52,389 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:10:52,390 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:10:52" (1/1) ... [2023-11-29 02:10:52,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:10:52,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:10:52,419 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:10:52,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:10:52,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:10:52,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 02:10:52,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 02:10:52,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 02:10:52,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 02:10:52,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 02:10:52,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 02:10:52,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 02:10:52,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 02:10:52,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 02:10:52,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 02:10:52,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 02:10:52,454 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 02:10:52,454 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 02:10:52,455 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 02:10:52,456 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 02:10:52,456 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 02:10:52,457 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 02:10:52,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:10:52,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 02:10:52,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 02:10:52,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 02:10:52,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 02:10:52,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 02:10:52,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 02:10:52,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 02:10:52,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:10:52,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:10:52,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 02:10:52,460 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 02:10:52,581 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:10:52,582 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:10:52,944 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:10:53,343 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:10:53,343 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-29 02:10:53,344 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:10:53 BoogieIcfgContainer [2023-11-29 02:10:53,344 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:10:53,347 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:10:53,347 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:10:53,350 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:10:53,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:10:52" (1/3) ... [2023-11-29 02:10:53,351 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b1a7101 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:10:53, skipping insertion in model container [2023-11-29 02:10:53,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:10:52" (2/3) ... [2023-11-29 02:10:53,351 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b1a7101 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:10:53, skipping insertion in model container [2023-11-29 02:10:53,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:10:53" (3/3) ... [2023-11-29 02:10:53,352 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-horseshoe.wvr.c [2023-11-29 02:10:53,362 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 02:10:53,372 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:10:53,372 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-11-29 02:10:53,372 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 02:10:53,444 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 02:10:53,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 82 transitions, 185 flow [2023-11-29 02:10:53,517 INFO L124 PetriNetUnfolderBase]: 7/79 cut-off events. [2023-11-29 02:10:53,518 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 02:10:53,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 79 events. 7/79 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 223 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2023-11-29 02:10:53,522 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 82 transitions, 185 flow [2023-11-29 02:10:53,526 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 78 transitions, 174 flow [2023-11-29 02:10:53,536 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:10:53,543 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;@24068fcd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:10:53,543 INFO L358 AbstractCegarLoop]: Starting to check reachability of 47 error locations. [2023-11-29 02:10:53,547 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 02:10:53,547 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 02:10:53,547 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 02:10:53,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:10:53,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 02:10:53,548 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-11-29 02:10:53,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:10:53,553 INFO L85 PathProgramCache]: Analyzing trace with hash 830962, now seen corresponding path program 1 times [2023-11-29 02:10:53,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:10:53,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403415073] [2023-11-29 02:10:53,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:10:53,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:10:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:53,803 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 02:10:53,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:10:53,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403415073] [2023-11-29 02:10:53,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403415073] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:10:53,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:10:53,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:10:53,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130621550] [2023-11-29 02:10:53,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:10:53,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:10:53,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:10:53,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:10:53,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:10:53,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 82 [2023-11-29 02:10:53,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 78 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 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 02:10:53,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:10:53,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 82 [2023-11-29 02:10:53,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:10:54,588 INFO L124 PetriNetUnfolderBase]: 2861/4934 cut-off events. [2023-11-29 02:10:54,588 INFO L125 PetriNetUnfolderBase]: For 256/256 co-relation queries the response was YES. [2023-11-29 02:10:54,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9145 conditions, 4934 events. 2861/4934 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 33634 event pairs, 2541 based on Foata normal form. 308/3776 useless extension candidates. Maximal degree in co-relation 8339. Up to 3954 conditions per place. [2023-11-29 02:10:54,653 INFO L140 encePairwiseOnDemand]: 67/82 looper letters, 36 selfloop transitions, 6 changer transitions 0/69 dead transitions. [2023-11-29 02:10:54,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 69 transitions, 240 flow [2023-11-29 02:10:54,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:10:54,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:10:54,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 171 transitions. [2023-11-29 02:10:54,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5213414634146342 [2023-11-29 02:10:54,668 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 171 transitions. [2023-11-29 02:10:54,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 171 transitions. [2023-11-29 02:10:54,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:10:54,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 171 transitions. [2023-11-29 02:10:54,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 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 02:10:54,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 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 02:10:54,679 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 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 02:10:54,681 INFO L175 Difference]: Start difference. First operand has 81 places, 78 transitions, 174 flow. Second operand 4 states and 171 transitions. [2023-11-29 02:10:54,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 69 transitions, 240 flow [2023-11-29 02:10:54,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 69 transitions, 228 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-29 02:10:54,691 INFO L231 Difference]: Finished difference. Result has 71 places, 69 transitions, 156 flow [2023-11-29 02:10:54,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=71, PETRI_TRANSITIONS=69} [2023-11-29 02:10:54,696 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -10 predicate places. [2023-11-29 02:10:54,697 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 156 flow [2023-11-29 02:10:54,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 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 02:10:54,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:10:54,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-29 02:10:54,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 02:10:54,698 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-11-29 02:10:54,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:10:54,698 INFO L85 PathProgramCache]: Analyzing trace with hash 25760633, now seen corresponding path program 1 times [2023-11-29 02:10:54,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:10:54,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241527719] [2023-11-29 02:10:54,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:10:54,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:10:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:54,780 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 02:10:54,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:10:54,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241527719] [2023-11-29 02:10:54,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241527719] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:10:54,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:10:54,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:10:54,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132017891] [2023-11-29 02:10:54,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:10:54,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:10:54,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:10:54,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:10:54,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:10:54,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 82 [2023-11-29 02:10:54,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 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 02:10:54,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:10:54,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 82 [2023-11-29 02:10:54,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:10:55,383 INFO L124 PetriNetUnfolderBase]: 2863/4942 cut-off events. [2023-11-29 02:10:55,383 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2023-11-29 02:10:55,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9012 conditions, 4942 events. 2863/4942 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 33610 event pairs, 2541 based on Foata normal form. 2/3480 useless extension candidates. Maximal degree in co-relation 8964. Up to 3963 conditions per place. [2023-11-29 02:10:55,473 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 41 selfloop transitions, 7 changer transitions 0/75 dead transitions. [2023-11-29 02:10:55,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 75 transitions, 274 flow [2023-11-29 02:10:55,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:10:55,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:10:55,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 170 transitions. [2023-11-29 02:10:55,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182926829268293 [2023-11-29 02:10:55,477 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 170 transitions. [2023-11-29 02:10:55,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 170 transitions. [2023-11-29 02:10:55,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:10:55,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 170 transitions. [2023-11-29 02:10:55,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 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 02:10:55,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 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 02:10:55,481 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 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 02:10:55,481 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 156 flow. Second operand 4 states and 170 transitions. [2023-11-29 02:10:55,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 75 transitions, 274 flow [2023-11-29 02:10:55,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 75 transitions, 252 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 02:10:55,485 INFO L231 Difference]: Finished difference. Result has 74 places, 75 transitions, 200 flow [2023-11-29 02:10:55,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=74, PETRI_TRANSITIONS=75} [2023-11-29 02:10:55,486 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -7 predicate places. [2023-11-29 02:10:55,486 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 75 transitions, 200 flow [2023-11-29 02:10:55,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 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 02:10:55,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:10:55,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:10:55,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 02:10:55,487 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-11-29 02:10:55,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:10:55,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1282224871, now seen corresponding path program 1 times [2023-11-29 02:10:55,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:10:55,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091847146] [2023-11-29 02:10:55,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:10:55,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:10:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:55,626 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 02:10:55,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:10:55,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091847146] [2023-11-29 02:10:55,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091847146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:10:55,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:10:55,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:10:55,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901186895] [2023-11-29 02:10:55,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:10:55,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:10:55,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:10:55,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:10:55,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:10:55,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 82 [2023-11-29 02:10:55,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 75 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 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 02:10:55,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:10:55,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 82 [2023-11-29 02:10:55,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:10:56,293 INFO L124 PetriNetUnfolderBase]: 3003/5247 cut-off events. [2023-11-29 02:10:56,294 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2023-11-29 02:10:56,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9571 conditions, 5247 events. 3003/5247 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 35680 event pairs, 2668 based on Foata normal form. 98/3923 useless extension candidates. Maximal degree in co-relation 8976. Up to 3963 conditions per place. [2023-11-29 02:10:56,343 INFO L140 encePairwiseOnDemand]: 70/82 looper letters, 58 selfloop transitions, 7 changer transitions 1/95 dead transitions. [2023-11-29 02:10:56,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 95 transitions, 393 flow [2023-11-29 02:10:56,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:10:56,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 02:10:56,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 238 transitions. [2023-11-29 02:10:56,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5804878048780487 [2023-11-29 02:10:56,345 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 238 transitions. [2023-11-29 02:10:56,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 238 transitions. [2023-11-29 02:10:56,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:10:56,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 238 transitions. [2023-11-29 02:10:56,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 47.6) internal successors, (238), 5 states have internal predecessors, (238), 0 states have call successors, (0), 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 02:10:56,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 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 02:10:56,350 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 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 02:10:56,350 INFO L175 Difference]: Start difference. First operand has 74 places, 75 transitions, 200 flow. Second operand 5 states and 238 transitions. [2023-11-29 02:10:56,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 95 transitions, 393 flow [2023-11-29 02:10:56,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 95 transitions, 393 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 02:10:56,354 INFO L231 Difference]: Finished difference. Result has 80 places, 79 transitions, 263 flow [2023-11-29 02:10:56,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=263, PETRI_PLACES=80, PETRI_TRANSITIONS=79} [2023-11-29 02:10:56,355 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -1 predicate places. [2023-11-29 02:10:56,355 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 79 transitions, 263 flow [2023-11-29 02:10:56,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 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 02:10:56,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:10:56,356 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 02:10:56,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 02:10:56,356 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-11-29 02:10:56,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:10:56,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1363272924, now seen corresponding path program 1 times [2023-11-29 02:10:56,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:10:56,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574199407] [2023-11-29 02:10:56,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:10:56,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:10:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:56,444 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 02:10:56,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:10:56,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574199407] [2023-11-29 02:10:56,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574199407] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:10:56,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035787586] [2023-11-29 02:10:56,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:10:56,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:10:56,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:10:56,448 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:10:56,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 02:10:56,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:56,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:10:56,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:10:56,598 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 02:10:56,598 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:10:56,640 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 02:10:56,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035787586] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:10:56,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:10:56,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 02:10:56,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482095440] [2023-11-29 02:10:56,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:10:56,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 02:10:56,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:10:56,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 02:10:56,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:10:56,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 82 [2023-11-29 02:10:56,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 79 transitions, 263 flow. Second operand has 12 states, 12 states have (on average 31.083333333333332) internal successors, (373), 12 states have internal predecessors, (373), 0 states have call successors, (0), 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 02:10:56,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:10:56,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 82 [2023-11-29 02:10:56,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:10:57,377 INFO L124 PetriNetUnfolderBase]: 2988/5135 cut-off events. [2023-11-29 02:10:57,377 INFO L125 PetriNetUnfolderBase]: For 485/485 co-relation queries the response was YES. [2023-11-29 02:10:57,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10371 conditions, 5135 events. 2988/5135 cut-off events. For 485/485 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 34154 event pairs, 2668 based on Foata normal form. 6/3754 useless extension candidates. Maximal degree in co-relation 9745. Up to 4192 conditions per place. [2023-11-29 02:10:57,410 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 43 selfloop transitions, 33 changer transitions 0/103 dead transitions. [2023-11-29 02:10:57,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 103 transitions, 553 flow [2023-11-29 02:10:57,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:10:57,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:10:57,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 372 transitions. [2023-11-29 02:10:57,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45365853658536587 [2023-11-29 02:10:57,413 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 372 transitions. [2023-11-29 02:10:57,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 372 transitions. [2023-11-29 02:10:57,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:10:57,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 372 transitions. [2023-11-29 02:10:57,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 37.2) internal successors, (372), 10 states have internal predecessors, (372), 0 states have call successors, (0), 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 02:10:57,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 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 02:10:57,419 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 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 02:10:57,419 INFO L175 Difference]: Start difference. First operand has 80 places, 79 transitions, 263 flow. Second operand 10 states and 372 transitions. [2023-11-29 02:10:57,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 103 transitions, 553 flow [2023-11-29 02:10:57,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 103 transitions, 549 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-29 02:10:57,425 INFO L231 Difference]: Finished difference. Result has 91 places, 103 transitions, 507 flow [2023-11-29 02:10:57,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=507, PETRI_PLACES=91, PETRI_TRANSITIONS=103} [2023-11-29 02:10:57,426 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 10 predicate places. [2023-11-29 02:10:57,426 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 103 transitions, 507 flow [2023-11-29 02:10:57,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 31.083333333333332) internal successors, (373), 12 states have internal predecessors, (373), 0 states have call successors, (0), 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 02:10:57,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:10:57,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:10:57,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:10:57,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:10:57,632 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-11-29 02:10:57,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:10:57,633 INFO L85 PathProgramCache]: Analyzing trace with hash 28975502, now seen corresponding path program 1 times [2023-11-29 02:10:57,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:10:57,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362361805] [2023-11-29 02:10:57,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:10:57,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:10:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:57,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:10:57,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:10:57,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362361805] [2023-11-29 02:10:57,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362361805] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:10:57,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912377461] [2023-11-29 02:10:57,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:10:57,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:10:57,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:10:57,757 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:10:57,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 02:10:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:57,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:10:57,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:10:57,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:10:57,883 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:10:57,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912377461] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:10:57,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:10:57,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-11-29 02:10:57,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690171846] [2023-11-29 02:10:57,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:10:57,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:10:57,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:10:57,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:10:57,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:10:57,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 82 [2023-11-29 02:10:57,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 103 transitions, 507 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 02:10:57,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:10:57,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 82 [2023-11-29 02:10:57,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:10:58,318 INFO L124 PetriNetUnfolderBase]: 2114/3687 cut-off events. [2023-11-29 02:10:58,318 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-11-29 02:10:58,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7282 conditions, 3687 events. 2114/3687 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 23037 event pairs, 1852 based on Foata normal form. 0/2958 useless extension candidates. Maximal degree in co-relation 7174. Up to 3005 conditions per place. [2023-11-29 02:10:58,347 INFO L140 encePairwiseOnDemand]: 78/82 looper letters, 70 selfloop transitions, 1 changer transitions 0/100 dead transitions. [2023-11-29 02:10:58,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 100 transitions, 637 flow [2023-11-29 02:10:58,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:10:58,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:10:58,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 142 transitions. [2023-11-29 02:10:58,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5772357723577236 [2023-11-29 02:10:58,349 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 142 transitions. [2023-11-29 02:10:58,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 142 transitions. [2023-11-29 02:10:58,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:10:58,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 142 transitions. [2023-11-29 02:10:58,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 02:10:58,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 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 02:10:58,351 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 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 02:10:58,351 INFO L175 Difference]: Start difference. First operand has 91 places, 103 transitions, 507 flow. Second operand 3 states and 142 transitions. [2023-11-29 02:10:58,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 100 transitions, 637 flow [2023-11-29 02:10:58,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 100 transitions, 544 flow, removed 25 selfloop flow, removed 5 redundant places. [2023-11-29 02:10:58,358 INFO L231 Difference]: Finished difference. Result has 85 places, 100 transitions, 404 flow [2023-11-29 02:10:58,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=404, PETRI_PLACES=85, PETRI_TRANSITIONS=100} [2023-11-29 02:10:58,359 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 4 predicate places. [2023-11-29 02:10:58,359 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 100 transitions, 404 flow [2023-11-29 02:10:58,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 02:10:58,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:10:58,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:10:58,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 02:10:58,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:10:58,565 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-11-29 02:10:58,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:10:58,565 INFO L85 PathProgramCache]: Analyzing trace with hash 597299718, now seen corresponding path program 1 times [2023-11-29 02:10:58,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:10:58,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710916552] [2023-11-29 02:10:58,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:10:58,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:10:58,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:58,620 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 02:10:58,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:10:58,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710916552] [2023-11-29 02:10:58,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710916552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:10:58,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:10:58,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 02:10:58,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065374534] [2023-11-29 02:10:58,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:10:58,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:10:58,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:10:58,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:10:58,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:10:58,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 82 [2023-11-29 02:10:58,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 100 transitions, 404 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 02:10:58,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:10:58,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 82 [2023-11-29 02:10:58,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:10:59,160 INFO L124 PetriNetUnfolderBase]: 2106/3663 cut-off events. [2023-11-29 02:10:59,160 INFO L125 PetriNetUnfolderBase]: For 520/520 co-relation queries the response was YES. [2023-11-29 02:10:59,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7342 conditions, 3663 events. 2106/3663 cut-off events. For 520/520 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 21754 event pairs, 794 based on Foata normal form. 90/2999 useless extension candidates. Maximal degree in co-relation 7327. Up to 2234 conditions per place. [2023-11-29 02:10:59,193 INFO L140 encePairwiseOnDemand]: 78/82 looper letters, 85 selfloop transitions, 2 changer transitions 1/117 dead transitions. [2023-11-29 02:10:59,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 117 transitions, 622 flow [2023-11-29 02:10:59,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:10:59,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:10:59,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 158 transitions. [2023-11-29 02:10:59,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6422764227642277 [2023-11-29 02:10:59,195 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 158 transitions. [2023-11-29 02:10:59,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 158 transitions. [2023-11-29 02:10:59,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:10:59,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 158 transitions. [2023-11-29 02:10:59,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:10:59,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 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 02:10:59,197 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 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 02:10:59,197 INFO L175 Difference]: Start difference. First operand has 85 places, 100 transitions, 404 flow. Second operand 3 states and 158 transitions. [2023-11-29 02:10:59,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 117 transitions, 622 flow [2023-11-29 02:10:59,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 117 transitions, 621 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 02:10:59,203 INFO L231 Difference]: Finished difference. Result has 87 places, 100 transitions, 409 flow [2023-11-29 02:10:59,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=409, PETRI_PLACES=87, PETRI_TRANSITIONS=100} [2023-11-29 02:10:59,204 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 6 predicate places. [2023-11-29 02:10:59,204 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 100 transitions, 409 flow [2023-11-29 02:10:59,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 02:10:59,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:10:59,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:10:59,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 02:10:59,205 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-11-29 02:10:59,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:10:59,206 INFO L85 PathProgramCache]: Analyzing trace with hash 2075682033, now seen corresponding path program 1 times [2023-11-29 02:10:59,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:10:59,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144332602] [2023-11-29 02:10:59,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:10:59,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:10:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:10:59,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:10:59,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:10:59,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144332602] [2023-11-29 02:10:59,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144332602] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:10:59,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:10:59,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:10:59,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569225836] [2023-11-29 02:10:59,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:10:59,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:10:59,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:10:59,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:10:59,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:10:59,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 82 [2023-11-29 02:10:59,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 100 transitions, 409 flow. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 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 02:10:59,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:10:59,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 82 [2023-11-29 02:10:59,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:00,032 INFO L124 PetriNetUnfolderBase]: 4106/7132 cut-off events. [2023-11-29 02:11:00,032 INFO L125 PetriNetUnfolderBase]: For 1105/1105 co-relation queries the response was YES. [2023-11-29 02:11:00,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14589 conditions, 7132 events. 4106/7132 cut-off events. For 1105/1105 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 47395 event pairs, 2636 based on Foata normal form. 136/6058 useless extension candidates. Maximal degree in co-relation 14572. Up to 4465 conditions per place. [2023-11-29 02:11:00,068 INFO L140 encePairwiseOnDemand]: 76/82 looper letters, 112 selfloop transitions, 4 changer transitions 0/142 dead transitions. [2023-11-29 02:11:00,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 142 transitions, 753 flow [2023-11-29 02:11:00,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:11:00,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:11:00,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 206 transitions. [2023-11-29 02:11:00,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6280487804878049 [2023-11-29 02:11:00,070 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 206 transitions. [2023-11-29 02:11:00,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 206 transitions. [2023-11-29 02:11:00,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:00,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 206 transitions. [2023-11-29 02:11:00,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 0 states have call successors, (0), 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 02:11:00,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 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 02:11:00,071 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 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 02:11:00,071 INFO L175 Difference]: Start difference. First operand has 87 places, 100 transitions, 409 flow. Second operand 4 states and 206 transitions. [2023-11-29 02:11:00,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 142 transitions, 753 flow [2023-11-29 02:11:00,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 142 transitions, 749 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 02:11:00,076 INFO L231 Difference]: Finished difference. Result has 91 places, 103 transitions, 436 flow [2023-11-29 02:11:00,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=436, PETRI_PLACES=91, PETRI_TRANSITIONS=103} [2023-11-29 02:11:00,077 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 10 predicate places. [2023-11-29 02:11:00,077 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 103 transitions, 436 flow [2023-11-29 02:11:00,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 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 02:11:00,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:00,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:00,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 02:11:00,078 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-11-29 02:11:00,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:00,078 INFO L85 PathProgramCache]: Analyzing trace with hash -2121812603, now seen corresponding path program 1 times [2023-11-29 02:11:00,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:00,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841939791] [2023-11-29 02:11:00,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:00,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:00,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:11:00,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:00,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841939791] [2023-11-29 02:11:00,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841939791] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:11:00,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:11:00,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:11:00,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091671557] [2023-11-29 02:11:00,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:11:00,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:11:00,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:00,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:11:00,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:11:00,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 82 [2023-11-29 02:11:00,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 103 transitions, 436 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:11:00,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:00,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 82 [2023-11-29 02:11:00,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:00,538 INFO L124 PetriNetUnfolderBase]: 2221/4046 cut-off events. [2023-11-29 02:11:00,538 INFO L125 PetriNetUnfolderBase]: For 1176/1505 co-relation queries the response was YES. [2023-11-29 02:11:00,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8912 conditions, 4046 events. 2221/4046 cut-off events. For 1176/1505 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 25603 event pairs, 1026 based on Foata normal form. 131/3516 useless extension candidates. Maximal degree in co-relation 8893. Up to 2954 conditions per place. [2023-11-29 02:11:00,558 INFO L140 encePairwiseOnDemand]: 78/82 looper letters, 79 selfloop transitions, 3 changer transitions 0/112 dead transitions. [2023-11-29 02:11:00,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 112 transitions, 624 flow [2023-11-29 02:11:00,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:11:00,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:11:00,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2023-11-29 02:11:00,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6097560975609756 [2023-11-29 02:11:00,560 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 150 transitions. [2023-11-29 02:11:00,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 150 transitions. [2023-11-29 02:11:00,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:00,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 150 transitions. [2023-11-29 02:11:00,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 02:11:00,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 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 02:11:00,561 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 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 02:11:00,562 INFO L175 Difference]: Start difference. First operand has 91 places, 103 transitions, 436 flow. Second operand 3 states and 150 transitions. [2023-11-29 02:11:00,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 112 transitions, 624 flow [2023-11-29 02:11:00,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 112 transitions, 621 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 02:11:00,566 INFO L231 Difference]: Finished difference. Result has 93 places, 105 transitions, 456 flow [2023-11-29 02:11:00,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=456, PETRI_PLACES=93, PETRI_TRANSITIONS=105} [2023-11-29 02:11:00,567 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 12 predicate places. [2023-11-29 02:11:00,567 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 105 transitions, 456 flow [2023-11-29 02:11:00,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:11:00,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:00,568 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-29 02:11:00,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 02:11:00,568 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-11-29 02:11:00,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:00,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1565799353, now seen corresponding path program 2 times [2023-11-29 02:11:00,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:00,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041465540] [2023-11-29 02:11:00,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:00,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:00,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:00,699 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:11:00,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:00,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041465540] [2023-11-29 02:11:00,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041465540] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:11:00,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591520091] [2023-11-29 02:11:00,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:11:00,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:00,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:11:00,704 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:11:00,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 02:11:00,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 02:11:00,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:11:00,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:11:00,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:11:00,849 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 02:11:00,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:11:00,881 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 02:11:00,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591520091] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:11:00,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:11:00,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2023-11-29 02:11:00,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072872791] [2023-11-29 02:11:00,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:11:00,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 02:11:00,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:00,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 02:11:00,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-29 02:11:00,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 82 [2023-11-29 02:11:00,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 105 transitions, 456 flow. Second operand has 14 states, 14 states have (on average 31.142857142857142) internal successors, (436), 14 states have internal predecessors, (436), 0 states have call successors, (0), 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 02:11:00,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:00,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 82 [2023-11-29 02:11:00,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:01,537 INFO L124 PetriNetUnfolderBase]: 2224/4003 cut-off events. [2023-11-29 02:11:01,537 INFO L125 PetriNetUnfolderBase]: For 2020/2416 co-relation queries the response was YES. [2023-11-29 02:11:01,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9126 conditions, 4003 events. 2224/4003 cut-off events. For 2020/2416 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 25108 event pairs, 1742 based on Foata normal form. 137/3480 useless extension candidates. Maximal degree in co-relation 9105. Up to 3143 conditions per place. [2023-11-29 02:11:01,561 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 35 selfloop transitions, 36 changer transitions 12/111 dead transitions. [2023-11-29 02:11:01,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 111 transitions, 652 flow [2023-11-29 02:11:01,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:11:01,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 02:11:01,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 491 transitions. [2023-11-29 02:11:01,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42770034843205573 [2023-11-29 02:11:01,565 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 491 transitions. [2023-11-29 02:11:01,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 491 transitions. [2023-11-29 02:11:01,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:01,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 491 transitions. [2023-11-29 02:11:01,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 35.07142857142857) internal successors, (491), 14 states have internal predecessors, (491), 0 states have call successors, (0), 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 02:11:01,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 82.0) internal successors, (1230), 15 states have internal predecessors, (1230), 0 states have call successors, (0), 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 02:11:01,571 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 82.0) internal successors, (1230), 15 states have internal predecessors, (1230), 0 states have call successors, (0), 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 02:11:01,571 INFO L175 Difference]: Start difference. First operand has 93 places, 105 transitions, 456 flow. Second operand 14 states and 491 transitions. [2023-11-29 02:11:01,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 111 transitions, 652 flow [2023-11-29 02:11:01,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 111 transitions, 608 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-11-29 02:11:01,579 INFO L231 Difference]: Finished difference. Result has 99 places, 99 transitions, 421 flow [2023-11-29 02:11:01,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=421, PETRI_PLACES=99, PETRI_TRANSITIONS=99} [2023-11-29 02:11:01,580 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 18 predicate places. [2023-11-29 02:11:01,580 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 99 transitions, 421 flow [2023-11-29 02:11:01,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 31.142857142857142) internal successors, (436), 14 states have internal predecessors, (436), 0 states have call successors, (0), 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 02:11:01,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:01,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:01,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 02:11:01,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:01,781 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-11-29 02:11:01,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:01,782 INFO L85 PathProgramCache]: Analyzing trace with hash -400396009, now seen corresponding path program 1 times [2023-11-29 02:11:01,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:01,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337036790] [2023-11-29 02:11:01,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:01,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:01,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:01,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:11:01,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:01,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337036790] [2023-11-29 02:11:01,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337036790] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:11:01,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:11:01,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:11:01,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150581185] [2023-11-29 02:11:01,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:11:01,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:11:01,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:01,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:11:01,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:11:01,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 82 [2023-11-29 02:11:01,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 99 transitions, 421 flow. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 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 02:11:01,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:01,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 82 [2023-11-29 02:11:01,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:02,477 INFO L124 PetriNetUnfolderBase]: 2452/4391 cut-off events. [2023-11-29 02:11:02,477 INFO L125 PetriNetUnfolderBase]: For 1385/1824 co-relation queries the response was YES. [2023-11-29 02:11:02,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9630 conditions, 4391 events. 2452/4391 cut-off events. For 1385/1824 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 27567 event pairs, 1936 based on Foata normal form. 228/3952 useless extension candidates. Maximal degree in co-relation 9612. Up to 3059 conditions per place. [2023-11-29 02:11:02,500 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 76 selfloop transitions, 9 changer transitions 7/120 dead transitions. [2023-11-29 02:11:02,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 120 transitions, 675 flow [2023-11-29 02:11:02,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:11:02,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 02:11:02,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 233 transitions. [2023-11-29 02:11:02,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5682926829268292 [2023-11-29 02:11:02,503 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 233 transitions. [2023-11-29 02:11:02,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 233 transitions. [2023-11-29 02:11:02,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:02,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 233 transitions. [2023-11-29 02:11:02,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 46.6) internal successors, (233), 5 states have internal predecessors, (233), 0 states have call successors, (0), 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 02:11:02,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 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 02:11:02,505 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 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 02:11:02,505 INFO L175 Difference]: Start difference. First operand has 99 places, 99 transitions, 421 flow. Second operand 5 states and 233 transitions. [2023-11-29 02:11:02,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 120 transitions, 675 flow [2023-11-29 02:11:02,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 120 transitions, 564 flow, removed 26 selfloop flow, removed 12 redundant places. [2023-11-29 02:11:02,511 INFO L231 Difference]: Finished difference. Result has 90 places, 99 transitions, 347 flow [2023-11-29 02:11:02,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=347, PETRI_PLACES=90, PETRI_TRANSITIONS=99} [2023-11-29 02:11:02,512 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 9 predicate places. [2023-11-29 02:11:02,512 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 99 transitions, 347 flow [2023-11-29 02:11:02,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 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 02:11:02,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:02,512 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:02,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 02:11:02,513 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-11-29 02:11:02,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:02,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1982012686, now seen corresponding path program 1 times [2023-11-29 02:11:02,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:02,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102374117] [2023-11-29 02:11:02,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:02,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:02,644 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:11:02,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:02,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102374117] [2023-11-29 02:11:02,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102374117] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:11:02,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897326177] [2023-11-29 02:11:02,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:02,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:02,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:11:02,645 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:11:02,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 02:11:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:02,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 02:11:02,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:11:02,850 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:11:02,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:11:02,968 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:11:02,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897326177] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:11:02,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:11:02,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-11-29 02:11:02,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174600377] [2023-11-29 02:11:02,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:11:02,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 02:11:02,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:02,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 02:11:02,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-11-29 02:11:03,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 82 [2023-11-29 02:11:03,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 99 transitions, 347 flow. Second operand has 15 states, 15 states have (on average 31.6) internal successors, (474), 15 states have internal predecessors, (474), 0 states have call successors, (0), 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 02:11:03,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:03,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 82 [2023-11-29 02:11:03,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:03,965 INFO L124 PetriNetUnfolderBase]: 4242/7894 cut-off events. [2023-11-29 02:11:03,966 INFO L125 PetriNetUnfolderBase]: For 2419/2979 co-relation queries the response was YES. [2023-11-29 02:11:03,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17624 conditions, 7894 events. 4242/7894 cut-off events. For 2419/2979 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 57397 event pairs, 2814 based on Foata normal form. 582/7236 useless extension candidates. Maximal degree in co-relation 17608. Up to 3519 conditions per place. [2023-11-29 02:11:03,999 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 83 selfloop transitions, 44 changer transitions 1/156 dead transitions. [2023-11-29 02:11:03,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 156 transitions, 790 flow [2023-11-29 02:11:03,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:11:03,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:11:04,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 385 transitions. [2023-11-29 02:11:04,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4695121951219512 [2023-11-29 02:11:04,001 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 385 transitions. [2023-11-29 02:11:04,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 385 transitions. [2023-11-29 02:11:04,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:04,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 385 transitions. [2023-11-29 02:11:04,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 38.5) internal successors, (385), 10 states have internal predecessors, (385), 0 states have call successors, (0), 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 02:11:04,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 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 02:11:04,005 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 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 02:11:04,005 INFO L175 Difference]: Start difference. First operand has 90 places, 99 transitions, 347 flow. Second operand 10 states and 385 transitions. [2023-11-29 02:11:04,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 156 transitions, 790 flow [2023-11-29 02:11:04,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 156 transitions, 785 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 02:11:04,009 INFO L231 Difference]: Finished difference. Result has 100 places, 118 transitions, 550 flow [2023-11-29 02:11:04,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=550, PETRI_PLACES=100, PETRI_TRANSITIONS=118} [2023-11-29 02:11:04,010 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 19 predicate places. [2023-11-29 02:11:04,010 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 118 transitions, 550 flow [2023-11-29 02:11:04,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 31.6) internal successors, (474), 15 states have internal predecessors, (474), 0 states have call successors, (0), 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 02:11:04,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:04,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:04,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 02:11:04,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:04,213 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-11-29 02:11:04,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:04,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1104939369, now seen corresponding path program 1 times [2023-11-29 02:11:04,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:04,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869593902] [2023-11-29 02:11:04,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:04,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:04,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:04,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:11:04,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:04,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869593902] [2023-11-29 02:11:04,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869593902] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:11:04,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416121465] [2023-11-29 02:11:04,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:04,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:04,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:11:04,361 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:11:04,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 02:11:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:04,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:11:04,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:11:04,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:11:04,499 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:11:04,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416121465] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:11:04,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:11:04,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-29 02:11:04,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036690167] [2023-11-29 02:11:04,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:11:04,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:11:04,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:04,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:11:04,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:11:04,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 82 [2023-11-29 02:11:04,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 118 transitions, 550 flow. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 02:11:04,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:04,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 82 [2023-11-29 02:11:04,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:04,976 INFO L124 PetriNetUnfolderBase]: 3149/6008 cut-off events. [2023-11-29 02:11:04,977 INFO L125 PetriNetUnfolderBase]: For 2518/2964 co-relation queries the response was YES. [2023-11-29 02:11:04,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13496 conditions, 6008 events. 3149/6008 cut-off events. For 2518/2964 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 42937 event pairs, 2579 based on Foata normal form. 213/5505 useless extension candidates. Maximal degree in co-relation 13477. Up to 4616 conditions per place. [2023-11-29 02:11:05,002 INFO L140 encePairwiseOnDemand]: 79/82 looper letters, 87 selfloop transitions, 1 changer transitions 0/116 dead transitions. [2023-11-29 02:11:05,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 116 transitions, 718 flow [2023-11-29 02:11:05,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:11:05,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:11:05,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 139 transitions. [2023-11-29 02:11:05,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5650406504065041 [2023-11-29 02:11:05,004 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 139 transitions. [2023-11-29 02:11:05,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 139 transitions. [2023-11-29 02:11:05,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:05,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 139 transitions. [2023-11-29 02:11:05,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:11:05,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 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 02:11:05,006 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 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 02:11:05,006 INFO L175 Difference]: Start difference. First operand has 100 places, 118 transitions, 550 flow. Second operand 3 states and 139 transitions. [2023-11-29 02:11:05,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 116 transitions, 718 flow [2023-11-29 02:11:05,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 116 transitions, 716 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 02:11:05,013 INFO L231 Difference]: Finished difference. Result has 99 places, 116 transitions, 542 flow [2023-11-29 02:11:05,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=542, PETRI_PLACES=99, PETRI_TRANSITIONS=116} [2023-11-29 02:11:05,014 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 18 predicate places. [2023-11-29 02:11:05,014 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 116 transitions, 542 flow [2023-11-29 02:11:05,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 02:11:05,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:05,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:05,019 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 02:11:05,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 02:11:05,215 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-11-29 02:11:05,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:05,215 INFO L85 PathProgramCache]: Analyzing trace with hash -574112354, now seen corresponding path program 1 times [2023-11-29 02:11:05,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:05,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343387069] [2023-11-29 02:11:05,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:05,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:05,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:11:05,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:05,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343387069] [2023-11-29 02:11:05,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343387069] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:11:05,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241060170] [2023-11-29 02:11:05,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:05,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:05,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:11:05,719 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:11:05,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 02:11:05,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:05,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 02:11:05,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:11:05,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 02:11:05,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:05,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:11:05,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:05,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 02:11:05,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:05,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:11:05,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:05,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:11:05,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:05,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 02:11:05,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:05,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 02:11:05,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:05,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:11:05,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:05,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 02:11:05,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:05,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:11:05,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:05,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 02:11:05,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:05,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:11:05,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:05,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 02:11:05,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:05,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:11:05,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:05,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 02:11:06,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:06,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 02:11:06,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:06,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 02:11:06,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:06,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:11:06,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:06,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 02:11:06,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:06,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:11:06,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:06,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:11:06,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:06,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 02:11:06,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:06,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 02:11:06,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:06,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:11:06,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-29 02:11:06,171 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 02:11:06,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 02:11:06,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 02:11:06,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:11:06,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:11:07,056 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 02:11:07,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 44 [2023-11-29 02:11:07,071 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-29 02:11:07,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 53 [2023-11-29 02:11:07,084 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-29 02:11:07,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 28 [2023-11-29 02:11:07,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:11:07,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241060170] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:11:07,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:11:07,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 20 [2023-11-29 02:11:07,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707874841] [2023-11-29 02:11:07,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:11:07,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 02:11:07,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:07,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 02:11:07,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=380, Unknown=1, NotChecked=0, Total=462 [2023-11-29 02:11:07,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 82 [2023-11-29 02:11:07,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 116 transitions, 542 flow. Second operand has 22 states, 22 states have (on average 25.318181818181817) internal successors, (557), 22 states have internal predecessors, (557), 0 states have call successors, (0), 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 02:11:07,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:07,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 82 [2023-11-29 02:11:07,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:09,773 INFO L124 PetriNetUnfolderBase]: 4559/8079 cut-off events. [2023-11-29 02:11:09,773 INFO L125 PetriNetUnfolderBase]: For 3349/3860 co-relation queries the response was YES. [2023-11-29 02:11:09,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18488 conditions, 8079 events. 4559/8079 cut-off events. For 3349/3860 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 55831 event pairs, 1398 based on Foata normal form. 302/7410 useless extension candidates. Maximal degree in co-relation 18468. Up to 2313 conditions per place. [2023-11-29 02:11:09,810 INFO L140 encePairwiseOnDemand]: 68/82 looper letters, 197 selfloop transitions, 49 changer transitions 0/267 dead transitions. [2023-11-29 02:11:09,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 267 transitions, 1487 flow [2023-11-29 02:11:09,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 02:11:09,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 02:11:09,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 692 transitions. [2023-11-29 02:11:09,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40185830429732866 [2023-11-29 02:11:09,813 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 692 transitions. [2023-11-29 02:11:09,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 692 transitions. [2023-11-29 02:11:09,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:09,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 692 transitions. [2023-11-29 02:11:09,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 32.95238095238095) internal successors, (692), 21 states have internal predecessors, (692), 0 states have call successors, (0), 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 02:11:09,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 82.0) internal successors, (1804), 22 states have internal predecessors, (1804), 0 states have call successors, (0), 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 02:11:09,820 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 82.0) internal successors, (1804), 22 states have internal predecessors, (1804), 0 states have call successors, (0), 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 02:11:09,820 INFO L175 Difference]: Start difference. First operand has 99 places, 116 transitions, 542 flow. Second operand 21 states and 692 transitions. [2023-11-29 02:11:09,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 267 transitions, 1487 flow [2023-11-29 02:11:09,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 267 transitions, 1486 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 02:11:09,829 INFO L231 Difference]: Finished difference. Result has 124 places, 131 transitions, 779 flow [2023-11-29 02:11:09,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=779, PETRI_PLACES=124, PETRI_TRANSITIONS=131} [2023-11-29 02:11:09,829 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 43 predicate places. [2023-11-29 02:11:09,829 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 131 transitions, 779 flow [2023-11-29 02:11:09,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 25.318181818181817) internal successors, (557), 22 states have internal predecessors, (557), 0 states have call successors, (0), 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 02:11:09,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:09,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:09,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 02:11:10,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 02:11:10,030 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-11-29 02:11:10,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:10,031 INFO L85 PathProgramCache]: Analyzing trace with hash 732055991, now seen corresponding path program 1 times [2023-11-29 02:11:10,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:10,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805491215] [2023-11-29 02:11:10,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:10,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:10,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:11:10,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:10,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805491215] [2023-11-29 02:11:10,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805491215] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:11:10,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999842752] [2023-11-29 02:11:10,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:10,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:10,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:11:10,360 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:11:10,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 02:11:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:10,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 02:11:10,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:11:10,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:11:10,673 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:11:10,735 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-29 02:11:10,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 02:11:11,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:11:11,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999842752] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:11:11,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:11:11,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-11-29 02:11:11,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363391766] [2023-11-29 02:11:11,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:11:11,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 02:11:11,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:11,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 02:11:11,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:11:11,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 82 [2023-11-29 02:11:11,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 131 transitions, 779 flow. Second operand has 19 states, 19 states have (on average 30.473684210526315) internal successors, (579), 19 states have internal predecessors, (579), 0 states have call successors, (0), 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 02:11:11,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:11,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 82 [2023-11-29 02:11:11,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:12,255 INFO L124 PetriNetUnfolderBase]: 3170/5894 cut-off events. [2023-11-29 02:11:12,255 INFO L125 PetriNetUnfolderBase]: For 4534/4869 co-relation queries the response was YES. [2023-11-29 02:11:12,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15241 conditions, 5894 events. 3170/5894 cut-off events. For 4534/4869 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 40740 event pairs, 368 based on Foata normal form. 272/5915 useless extension candidates. Maximal degree in co-relation 15214. Up to 1220 conditions per place. [2023-11-29 02:11:12,288 INFO L140 encePairwiseOnDemand]: 69/82 looper letters, 188 selfloop transitions, 21 changer transitions 0/235 dead transitions. [2023-11-29 02:11:12,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 235 transitions, 1492 flow [2023-11-29 02:11:12,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 02:11:12,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 02:11:12,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 584 transitions. [2023-11-29 02:11:12,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47479674796747967 [2023-11-29 02:11:12,291 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 584 transitions. [2023-11-29 02:11:12,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 584 transitions. [2023-11-29 02:11:12,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:12,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 584 transitions. [2023-11-29 02:11:12,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 38.93333333333333) internal successors, (584), 15 states have internal predecessors, (584), 0 states have call successors, (0), 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 02:11:12,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 82.0) internal successors, (1312), 16 states have internal predecessors, (1312), 0 states have call successors, (0), 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 02:11:12,296 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 82.0) internal successors, (1312), 16 states have internal predecessors, (1312), 0 states have call successors, (0), 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 02:11:12,296 INFO L175 Difference]: Start difference. First operand has 124 places, 131 transitions, 779 flow. Second operand 15 states and 584 transitions. [2023-11-29 02:11:12,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 235 transitions, 1492 flow [2023-11-29 02:11:12,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 235 transitions, 1468 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-29 02:11:12,318 INFO L231 Difference]: Finished difference. Result has 135 places, 129 transitions, 798 flow [2023-11-29 02:11:12,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=729, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=798, PETRI_PLACES=135, PETRI_TRANSITIONS=129} [2023-11-29 02:11:12,318 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 54 predicate places. [2023-11-29 02:11:12,319 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 129 transitions, 798 flow [2023-11-29 02:11:12,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 30.473684210526315) internal successors, (579), 19 states have internal predecessors, (579), 0 states have call successors, (0), 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 02:11:12,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:12,319 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:12,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 02:11:12,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 02:11:12,520 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-11-29 02:11:12,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:12,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1435440857, now seen corresponding path program 2 times [2023-11-29 02:11:12,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:12,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224755850] [2023-11-29 02:11:12,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:12,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:12,587 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 02:11:12,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:12,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224755850] [2023-11-29 02:11:12,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224755850] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:11:12,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659345747] [2023-11-29 02:11:12,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:11:12,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:12,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:11:12,589 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:11:12,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 02:11:12,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 02:11:12,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:11:12,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:11:12,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:11:12,735 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 02:11:12,735 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:11:12,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659345747] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:11:12,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:11:12,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-29 02:11:12,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086685469] [2023-11-29 02:11:12,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:11:12,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:11:12,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:12,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:11:12,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:11:12,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 82 [2023-11-29 02:11:12,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 129 transitions, 798 flow. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 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 02:11:12,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:12,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 82 [2023-11-29 02:11:12,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:13,514 INFO L124 PetriNetUnfolderBase]: 4247/7337 cut-off events. [2023-11-29 02:11:13,514 INFO L125 PetriNetUnfolderBase]: For 12529/12535 co-relation queries the response was YES. [2023-11-29 02:11:13,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21187 conditions, 7337 events. 4247/7337 cut-off events. For 12529/12535 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 48765 event pairs, 1436 based on Foata normal form. 138/7116 useless extension candidates. Maximal degree in co-relation 21157. Up to 2395 conditions per place. [2023-11-29 02:11:13,553 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 141 selfloop transitions, 7 changer transitions 0/172 dead transitions. [2023-11-29 02:11:13,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 172 transitions, 1346 flow [2023-11-29 02:11:13,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:11:13,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:11:13,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 191 transitions. [2023-11-29 02:11:13,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5823170731707317 [2023-11-29 02:11:13,554 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 191 transitions. [2023-11-29 02:11:13,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 191 transitions. [2023-11-29 02:11:13,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:13,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 191 transitions. [2023-11-29 02:11:13,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:11:13,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 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 02:11:13,556 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 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 02:11:13,556 INFO L175 Difference]: Start difference. First operand has 135 places, 129 transitions, 798 flow. Second operand 4 states and 191 transitions. [2023-11-29 02:11:13,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 172 transitions, 1346 flow [2023-11-29 02:11:13,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 172 transitions, 1277 flow, removed 18 selfloop flow, removed 10 redundant places. [2023-11-29 02:11:13,602 INFO L231 Difference]: Finished difference. Result has 127 places, 128 transitions, 761 flow [2023-11-29 02:11:13,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=761, PETRI_PLACES=127, PETRI_TRANSITIONS=128} [2023-11-29 02:11:13,603 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 46 predicate places. [2023-11-29 02:11:13,603 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 128 transitions, 761 flow [2023-11-29 02:11:13,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 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 02:11:13,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:13,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:13,608 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 02:11:13,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 02:11:13,809 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-11-29 02:11:13,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:13,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1262212847, now seen corresponding path program 1 times [2023-11-29 02:11:13,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:13,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400625823] [2023-11-29 02:11:13,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:13,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:13,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:11:13,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:13,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400625823] [2023-11-29 02:11:13,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400625823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:11:13,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:11:13,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:11:13,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243119002] [2023-11-29 02:11:13,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:11:13,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:11:13,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:13,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:11:13,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:11:13,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 82 [2023-11-29 02:11:13,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 128 transitions, 761 flow. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 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 02:11:13,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:13,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 82 [2023-11-29 02:11:13,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:14,560 INFO L124 PetriNetUnfolderBase]: 3753/6556 cut-off events. [2023-11-29 02:11:14,560 INFO L125 PetriNetUnfolderBase]: For 7383/7823 co-relation queries the response was YES. [2023-11-29 02:11:14,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18247 conditions, 6556 events. 3753/6556 cut-off events. For 7383/7823 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 43978 event pairs, 1082 based on Foata normal form. 406/6583 useless extension candidates. Maximal degree in co-relation 18220. Up to 2877 conditions per place. [2023-11-29 02:11:14,593 INFO L140 encePairwiseOnDemand]: 78/82 looper letters, 128 selfloop transitions, 4 changer transitions 0/157 dead transitions. [2023-11-29 02:11:14,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 157 transitions, 1129 flow [2023-11-29 02:11:14,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:11:14,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:11:14,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 193 transitions. [2023-11-29 02:11:14,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5884146341463414 [2023-11-29 02:11:14,594 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 193 transitions. [2023-11-29 02:11:14,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 193 transitions. [2023-11-29 02:11:14,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:14,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 193 transitions. [2023-11-29 02:11:14,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:11:14,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 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 02:11:14,597 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 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 02:11:14,597 INFO L175 Difference]: Start difference. First operand has 127 places, 128 transitions, 761 flow. Second operand 4 states and 193 transitions. [2023-11-29 02:11:14,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 157 transitions, 1129 flow [2023-11-29 02:11:14,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 157 transitions, 1103 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 02:11:14,621 INFO L231 Difference]: Finished difference. Result has 128 places, 129 transitions, 764 flow [2023-11-29 02:11:14,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=764, PETRI_PLACES=128, PETRI_TRANSITIONS=129} [2023-11-29 02:11:14,621 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 47 predicate places. [2023-11-29 02:11:14,622 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 129 transitions, 764 flow [2023-11-29 02:11:14,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 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 02:11:14,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:14,622 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:14,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 02:11:14,622 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-11-29 02:11:14,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:14,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1548992715, now seen corresponding path program 1 times [2023-11-29 02:11:14,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:14,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190964712] [2023-11-29 02:11:14,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:14,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:14,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:14,685 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 02:11:14,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:14,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190964712] [2023-11-29 02:11:14,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190964712] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:11:14,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509696345] [2023-11-29 02:11:14,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:14,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:14,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:11:14,687 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:11:14,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 02:11:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:14,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:11:14,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:11:14,821 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 02:11:14,821 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:11:14,852 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 02:11:14,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509696345] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:11:14,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:11:14,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-29 02:11:14,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899915453] [2023-11-29 02:11:14,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:11:14,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 02:11:14,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:14,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 02:11:14,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:11:14,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 82 [2023-11-29 02:11:14,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 129 transitions, 764 flow. Second operand has 12 states, 12 states have (on average 33.0) internal successors, (396), 12 states have internal predecessors, (396), 0 states have call successors, (0), 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 02:11:14,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:14,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 82 [2023-11-29 02:11:14,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:16,434 INFO L124 PetriNetUnfolderBase]: 7087/12633 cut-off events. [2023-11-29 02:11:16,434 INFO L125 PetriNetUnfolderBase]: For 19647/19791 co-relation queries the response was YES. [2023-11-29 02:11:16,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35661 conditions, 12633 events. 7087/12633 cut-off events. For 19647/19791 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 89628 event pairs, 2099 based on Foata normal form. 0/12340 useless extension candidates. Maximal degree in co-relation 35632. Up to 4976 conditions per place. [2023-11-29 02:11:16,510 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 282 selfloop transitions, 13 changer transitions 0/320 dead transitions. [2023-11-29 02:11:16,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 320 transitions, 2418 flow [2023-11-29 02:11:16,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:11:16,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:11:16,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 494 transitions. [2023-11-29 02:11:16,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6024390243902439 [2023-11-29 02:11:16,512 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 494 transitions. [2023-11-29 02:11:16,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 494 transitions. [2023-11-29 02:11:16,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:16,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 494 transitions. [2023-11-29 02:11:16,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 49.4) internal successors, (494), 10 states have internal predecessors, (494), 0 states have call successors, (0), 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 02:11:16,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 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 02:11:16,516 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 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 02:11:16,516 INFO L175 Difference]: Start difference. First operand has 128 places, 129 transitions, 764 flow. Second operand 10 states and 494 transitions. [2023-11-29 02:11:16,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 320 transitions, 2418 flow [2023-11-29 02:11:16,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 320 transitions, 2389 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 02:11:16,563 INFO L231 Difference]: Finished difference. Result has 138 places, 138 transitions, 839 flow [2023-11-29 02:11:16,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=839, PETRI_PLACES=138, PETRI_TRANSITIONS=138} [2023-11-29 02:11:16,564 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 57 predicate places. [2023-11-29 02:11:16,564 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 138 transitions, 839 flow [2023-11-29 02:11:16,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 33.0) internal successors, (396), 12 states have internal predecessors, (396), 0 states have call successors, (0), 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 02:11:16,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:16,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:16,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 02:11:16,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 02:11:16,765 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-11-29 02:11:16,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:16,765 INFO L85 PathProgramCache]: Analyzing trace with hash -473891685, now seen corresponding path program 1 times [2023-11-29 02:11:16,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:16,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581348823] [2023-11-29 02:11:16,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:16,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:17,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:11:17,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:17,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581348823] [2023-11-29 02:11:17,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581348823] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:11:17,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429156977] [2023-11-29 02:11:17,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:17,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:17,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:11:17,131 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:11:17,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 02:11:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:17,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 02:11:17,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:11:17,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-29 02:11:17,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:17,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 02:11:17,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:17,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:11:17,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:17,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 02:11:17,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:17,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:11:17,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:17,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 02:11:17,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:17,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:11:17,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:17,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 02:11:17,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:17,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 02:11:17,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:17,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:11:17,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:17,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:11:17,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:17,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 02:11:17,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:17,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 02:11:17,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:17,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:11:17,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:17,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 02:11:17,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:17,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:11:17,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:17,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 02:11:17,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:17,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 02:11:17,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:17,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:11:17,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:17,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 02:11:17,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:17,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:11:17,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:17,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 02:11:17,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:17,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:11:17,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:11:17,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 02:11:17,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-29 02:11:17,559 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 02:11:17,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 02:11:17,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 02:11:17,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:11:17,746 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:11:18,299 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 02:11:18,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 44 [2023-11-29 02:11:18,312 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 02:11:18,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 58 [2023-11-29 02:11:18,326 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 02:11:18,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 36 [2023-11-29 02:11:18,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:11:18,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429156977] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:11:18,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:11:18,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 20 [2023-11-29 02:11:18,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257332110] [2023-11-29 02:11:18,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:11:18,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 02:11:18,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:18,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 02:11:18,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=379, Unknown=3, NotChecked=0, Total=462 [2023-11-29 02:11:18,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 82 [2023-11-29 02:11:18,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 138 transitions, 839 flow. Second operand has 22 states, 22 states have (on average 25.59090909090909) internal successors, (563), 22 states have internal predecessors, (563), 0 states have call successors, (0), 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 02:11:18,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:18,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 82 [2023-11-29 02:11:18,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:21,086 INFO L124 PetriNetUnfolderBase]: 8119/12896 cut-off events. [2023-11-29 02:11:21,087 INFO L125 PetriNetUnfolderBase]: For 18011/18458 co-relation queries the response was YES. [2023-11-29 02:11:21,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39056 conditions, 12896 events. 8119/12896 cut-off events. For 18011/18458 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 84705 event pairs, 5590 based on Foata normal form. 72/12608 useless extension candidates. Maximal degree in co-relation 39025. Up to 10138 conditions per place. [2023-11-29 02:11:21,171 INFO L140 encePairwiseOnDemand]: 69/82 looper letters, 148 selfloop transitions, 53 changer transitions 2/226 dead transitions. [2023-11-29 02:11:21,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 226 transitions, 1544 flow [2023-11-29 02:11:21,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 02:11:21,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 02:11:21,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 505 transitions. [2023-11-29 02:11:21,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38490853658536583 [2023-11-29 02:11:21,173 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 505 transitions. [2023-11-29 02:11:21,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 505 transitions. [2023-11-29 02:11:21,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:21,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 505 transitions. [2023-11-29 02:11:21,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 31.5625) internal successors, (505), 16 states have internal predecessors, (505), 0 states have call successors, (0), 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 02:11:21,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 82.0) internal successors, (1394), 17 states have internal predecessors, (1394), 0 states have call successors, (0), 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 02:11:21,177 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 82.0) internal successors, (1394), 17 states have internal predecessors, (1394), 0 states have call successors, (0), 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 02:11:21,178 INFO L175 Difference]: Start difference. First operand has 138 places, 138 transitions, 839 flow. Second operand 16 states and 505 transitions. [2023-11-29 02:11:21,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 226 transitions, 1544 flow [2023-11-29 02:11:21,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 226 transitions, 1486 flow, removed 21 selfloop flow, removed 3 redundant places. [2023-11-29 02:11:21,219 INFO L231 Difference]: Finished difference. Result has 152 places, 140 transitions, 933 flow [2023-11-29 02:11:21,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=933, PETRI_PLACES=152, PETRI_TRANSITIONS=140} [2023-11-29 02:11:21,220 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 71 predicate places. [2023-11-29 02:11:21,220 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 140 transitions, 933 flow [2023-11-29 02:11:21,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 25.59090909090909) internal successors, (563), 22 states have internal predecessors, (563), 0 states have call successors, (0), 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 02:11:21,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:21,221 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:21,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 02:11:21,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 02:11:21,421 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-11-29 02:11:21,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:21,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1395332683, now seen corresponding path program 1 times [2023-11-29 02:11:21,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:21,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373104731] [2023-11-29 02:11:21,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:21,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:21,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:22,061 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:11:22,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:22,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373104731] [2023-11-29 02:11:22,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373104731] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:11:22,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355098995] [2023-11-29 02:11:22,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:22,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:22,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:11:22,063 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:11:22,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 02:11:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:22,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 02:11:22,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:11:22,286 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:11:22,286 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:11:22,325 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-29 02:11:22,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 13 [2023-11-29 02:11:22,344 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 02:11:22,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355098995] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:11:22,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:11:22,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 5] total 15 [2023-11-29 02:11:22,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242244006] [2023-11-29 02:11:22,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:11:22,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:11:22,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:22,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:11:22,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:11:22,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 82 [2023-11-29 02:11:22,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 140 transitions, 933 flow. Second operand has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 0 states have call successors, (0), 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 02:11:22,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:22,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 82 [2023-11-29 02:11:22,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:23,445 INFO L124 PetriNetUnfolderBase]: 5558/10252 cut-off events. [2023-11-29 02:11:23,445 INFO L125 PetriNetUnfolderBase]: For 11455/11725 co-relation queries the response was YES. [2023-11-29 02:11:23,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29188 conditions, 10252 events. 5558/10252 cut-off events. For 11455/11725 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 73685 event pairs, 662 based on Foata normal form. 80/9938 useless extension candidates. Maximal degree in co-relation 29154. Up to 4763 conditions per place. [2023-11-29 02:11:23,503 INFO L140 encePairwiseOnDemand]: 75/82 looper letters, 141 selfloop transitions, 14 changer transitions 0/185 dead transitions. [2023-11-29 02:11:23,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 185 transitions, 1398 flow [2023-11-29 02:11:23,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:11:23,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 02:11:23,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 239 transitions. [2023-11-29 02:11:23,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5829268292682926 [2023-11-29 02:11:23,505 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 239 transitions. [2023-11-29 02:11:23,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 239 transitions. [2023-11-29 02:11:23,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:23,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 239 transitions. [2023-11-29 02:11:23,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 47.8) internal successors, (239), 5 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:11:23,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 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 02:11:23,506 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 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 02:11:23,506 INFO L175 Difference]: Start difference. First operand has 152 places, 140 transitions, 933 flow. Second operand 5 states and 239 transitions. [2023-11-29 02:11:23,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 185 transitions, 1398 flow [2023-11-29 02:11:23,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 185 transitions, 1321 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-11-29 02:11:23,567 INFO L231 Difference]: Finished difference. Result has 145 places, 139 transitions, 875 flow [2023-11-29 02:11:23,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=847, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=875, PETRI_PLACES=145, PETRI_TRANSITIONS=139} [2023-11-29 02:11:23,567 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 64 predicate places. [2023-11-29 02:11:23,568 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 139 transitions, 875 flow [2023-11-29 02:11:23,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 0 states have call successors, (0), 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 02:11:23,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:23,568 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:23,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 02:11:23,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:23,768 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-11-29 02:11:23,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:23,769 INFO L85 PathProgramCache]: Analyzing trace with hash 357654354, now seen corresponding path program 2 times [2023-11-29 02:11:23,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:23,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947793887] [2023-11-29 02:11:23,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:23,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:23,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:24,480 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:11:24,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:24,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947793887] [2023-11-29 02:11:24,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947793887] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:11:24,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768212378] [2023-11-29 02:11:24,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:11:24,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:24,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:11:24,482 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:11:24,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 02:11:24,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 02:11:24,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:11:24,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:11:24,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:11:24,688 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 02:11:24,688 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:11:24,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768212378] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:11:24,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:11:24,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 11 [2023-11-29 02:11:24,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316552159] [2023-11-29 02:11:24,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:11:24,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:11:24,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:24,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:11:24,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-29 02:11:24,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 82 [2023-11-29 02:11:24,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 139 transitions, 875 flow. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 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 02:11:24,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:24,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 82 [2023-11-29 02:11:24,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:25,792 INFO L124 PetriNetUnfolderBase]: 6061/10781 cut-off events. [2023-11-29 02:11:25,792 INFO L125 PetriNetUnfolderBase]: For 15054/15270 co-relation queries the response was YES. [2023-11-29 02:11:25,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32282 conditions, 10781 events. 6061/10781 cut-off events. For 15054/15270 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 75881 event pairs, 754 based on Foata normal form. 158/10755 useless extension candidates. Maximal degree in co-relation 32248. Up to 5502 conditions per place. [2023-11-29 02:11:25,864 INFO L140 encePairwiseOnDemand]: 76/82 looper letters, 152 selfloop transitions, 12 changer transitions 0/192 dead transitions. [2023-11-29 02:11:25,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 192 transitions, 1412 flow [2023-11-29 02:11:25,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:11:25,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 02:11:25,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 239 transitions. [2023-11-29 02:11:25,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5829268292682926 [2023-11-29 02:11:25,865 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 239 transitions. [2023-11-29 02:11:25,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 239 transitions. [2023-11-29 02:11:25,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:25,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 239 transitions. [2023-11-29 02:11:25,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 47.8) internal successors, (239), 5 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:11:25,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 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 02:11:25,867 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 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 02:11:25,867 INFO L175 Difference]: Start difference. First operand has 145 places, 139 transitions, 875 flow. Second operand 5 states and 239 transitions. [2023-11-29 02:11:25,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 192 transitions, 1412 flow [2023-11-29 02:11:25,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 192 transitions, 1384 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-29 02:11:25,941 INFO L231 Difference]: Finished difference. Result has 148 places, 141 transitions, 905 flow [2023-11-29 02:11:25,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=905, PETRI_PLACES=148, PETRI_TRANSITIONS=141} [2023-11-29 02:11:25,942 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 67 predicate places. [2023-11-29 02:11:25,942 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 141 transitions, 905 flow [2023-11-29 02:11:25,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 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 02:11:25,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:25,942 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:25,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 02:11:26,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:26,143 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-11-29 02:11:26,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:26,143 INFO L85 PathProgramCache]: Analyzing trace with hash 663298848, now seen corresponding path program 1 times [2023-11-29 02:11:26,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:26,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088792527] [2023-11-29 02:11:26,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:26,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:27,066 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:11:27,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:27,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088792527] [2023-11-29 02:11:27,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088792527] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:11:27,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516969758] [2023-11-29 02:11:27,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:27,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:27,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:11:27,068 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:11:27,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 02:11:27,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:27,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:11:27,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:11:27,291 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 02:11:27,292 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:11:27,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516969758] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:11:27,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:11:27,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 12 [2023-11-29 02:11:27,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897349268] [2023-11-29 02:11:27,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:11:27,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:11:27,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:27,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:11:27,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2023-11-29 02:11:27,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 82 [2023-11-29 02:11:27,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 141 transitions, 905 flow. Second operand has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 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 02:11:27,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:27,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 82 [2023-11-29 02:11:27,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:28,616 INFO L124 PetriNetUnfolderBase]: 6672/11695 cut-off events. [2023-11-29 02:11:28,616 INFO L125 PetriNetUnfolderBase]: For 18720/18960 co-relation queries the response was YES. [2023-11-29 02:11:28,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34752 conditions, 11695 events. 6672/11695 cut-off events. For 18720/18960 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 82334 event pairs, 2766 based on Foata normal form. 72/11314 useless extension candidates. Maximal degree in co-relation 34715. Up to 8111 conditions per place. [2023-11-29 02:11:28,686 INFO L140 encePairwiseOnDemand]: 76/82 looper letters, 139 selfloop transitions, 9 changer transitions 0/175 dead transitions. [2023-11-29 02:11:28,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 175 transitions, 1300 flow [2023-11-29 02:11:28,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:11:28,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 02:11:28,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 233 transitions. [2023-11-29 02:11:28,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5682926829268292 [2023-11-29 02:11:28,687 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 233 transitions. [2023-11-29 02:11:28,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 233 transitions. [2023-11-29 02:11:28,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:28,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 233 transitions. [2023-11-29 02:11:28,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 46.6) internal successors, (233), 5 states have internal predecessors, (233), 0 states have call successors, (0), 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 02:11:28,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 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 02:11:28,689 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 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 02:11:28,689 INFO L175 Difference]: Start difference. First operand has 148 places, 141 transitions, 905 flow. Second operand 5 states and 233 transitions. [2023-11-29 02:11:28,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 175 transitions, 1300 flow [2023-11-29 02:11:28,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 175 transitions, 1283 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-29 02:11:28,760 INFO L231 Difference]: Finished difference. Result has 150 places, 141 transitions, 912 flow [2023-11-29 02:11:28,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=912, PETRI_PLACES=150, PETRI_TRANSITIONS=141} [2023-11-29 02:11:28,760 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 69 predicate places. [2023-11-29 02:11:28,761 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 141 transitions, 912 flow [2023-11-29 02:11:28,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 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 02:11:28,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:28,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:28,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 02:11:28,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:28,962 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-11-29 02:11:28,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:28,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1672117101, now seen corresponding path program 1 times [2023-11-29 02:11:28,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:28,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982573168] [2023-11-29 02:11:28,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:28,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:28,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:29,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:11:29,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:29,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982573168] [2023-11-29 02:11:29,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982573168] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:11:29,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85054779] [2023-11-29 02:11:29,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:29,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:29,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:11:29,427 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:11:29,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 02:11:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:29,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 02:11:29,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:11:29,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-29 02:11:29,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-29 02:11:30,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:11:30,011 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:11:30,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2023-11-29 02:11:30,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2023-11-29 02:11:30,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:11:30,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85054779] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:11:30,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:11:30,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2023-11-29 02:11:30,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892498825] [2023-11-29 02:11:30,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:11:30,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 02:11:30,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:30,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 02:11:30,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2023-11-29 02:11:30,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2023-11-29 02:11:30,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 141 transitions, 912 flow. Second operand has 23 states, 23 states have (on average 24.608695652173914) internal successors, (566), 23 states have internal predecessors, (566), 0 states have call successors, (0), 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 02:11:30,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:30,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2023-11-29 02:11:30,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:36,399 INFO L124 PetriNetUnfolderBase]: 19879/32841 cut-off events. [2023-11-29 02:11:36,400 INFO L125 PetriNetUnfolderBase]: For 56554/57871 co-relation queries the response was YES. [2023-11-29 02:11:36,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100943 conditions, 32841 events. 19879/32841 cut-off events. For 56554/57871 co-relation queries the response was YES. Maximal size of possible extension queue 923. Compared 257768 event pairs, 5316 based on Foata normal form. 0/31427 useless extension candidates. Maximal degree in co-relation 100906. Up to 5076 conditions per place. [2023-11-29 02:11:36,662 INFO L140 encePairwiseOnDemand]: 66/82 looper letters, 376 selfloop transitions, 67 changer transitions 11/477 dead transitions. [2023-11-29 02:11:36,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 477 transitions, 3515 flow [2023-11-29 02:11:36,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 02:11:36,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-29 02:11:36,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 776 transitions. [2023-11-29 02:11:36,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41145281018027574 [2023-11-29 02:11:36,664 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 776 transitions. [2023-11-29 02:11:36,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 776 transitions. [2023-11-29 02:11:36,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:36,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 776 transitions. [2023-11-29 02:11:36,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 33.73913043478261) internal successors, (776), 23 states have internal predecessors, (776), 0 states have call successors, (0), 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 02:11:36,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 82.0) internal successors, (1968), 24 states have internal predecessors, (1968), 0 states have call successors, (0), 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 02:11:36,807 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 82.0) internal successors, (1968), 24 states have internal predecessors, (1968), 0 states have call successors, (0), 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 02:11:36,807 INFO L175 Difference]: Start difference. First operand has 150 places, 141 transitions, 912 flow. Second operand 23 states and 776 transitions. [2023-11-29 02:11:36,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 477 transitions, 3515 flow [2023-11-29 02:11:37,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 477 transitions, 3439 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-11-29 02:11:37,080 INFO L231 Difference]: Finished difference. Result has 173 places, 160 transitions, 1197 flow [2023-11-29 02:11:37,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1197, PETRI_PLACES=173, PETRI_TRANSITIONS=160} [2023-11-29 02:11:37,081 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 92 predicate places. [2023-11-29 02:11:37,081 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 160 transitions, 1197 flow [2023-11-29 02:11:37,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 24.608695652173914) internal successors, (566), 23 states have internal predecessors, (566), 0 states have call successors, (0), 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 02:11:37,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:37,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:37,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 02:11:37,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:37,281 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-11-29 02:11:37,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:37,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1571894324, now seen corresponding path program 1 times [2023-11-29 02:11:37,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:37,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649322543] [2023-11-29 02:11:37,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:37,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:37,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:37,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:11:37,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:37,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649322543] [2023-11-29 02:11:37,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649322543] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:11:37,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035288293] [2023-11-29 02:11:37,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:37,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:37,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:11:37,649 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:11:37,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 02:11:37,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:37,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 02:11:37,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:11:37,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-29 02:11:38,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 02:11:38,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:11:38,220 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:11:38,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-29 02:11:38,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2023-11-29 02:11:38,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:11:38,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035288293] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:11:38,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:11:38,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2023-11-29 02:11:38,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074457193] [2023-11-29 02:11:38,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:11:38,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 02:11:38,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:38,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 02:11:38,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2023-11-29 02:11:39,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 82 [2023-11-29 02:11:39,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 160 transitions, 1197 flow. Second operand has 23 states, 23 states have (on average 25.608695652173914) internal successors, (589), 23 states have internal predecessors, (589), 0 states have call successors, (0), 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 02:11:39,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:39,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 82 [2023-11-29 02:11:39,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:44,943 INFO L124 PetriNetUnfolderBase]: 16729/28981 cut-off events. [2023-11-29 02:11:44,943 INFO L125 PetriNetUnfolderBase]: For 61312/62495 co-relation queries the response was YES. [2023-11-29 02:11:45,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95304 conditions, 28981 events. 16729/28981 cut-off events. For 61312/62495 co-relation queries the response was YES. Maximal size of possible extension queue 799. Compared 235866 event pairs, 5316 based on Foata normal form. 682/29587 useless extension candidates. Maximal degree in co-relation 95264. Up to 5076 conditions per place. [2023-11-29 02:11:45,177 INFO L140 encePairwiseOnDemand]: 66/82 looper letters, 369 selfloop transitions, 68 changer transitions 11/474 dead transitions. [2023-11-29 02:11:45,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 474 transitions, 3688 flow [2023-11-29 02:11:45,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 02:11:45,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-29 02:11:45,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 793 transitions. [2023-11-29 02:11:45,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42046659597030756 [2023-11-29 02:11:45,179 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 793 transitions. [2023-11-29 02:11:45,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 793 transitions. [2023-11-29 02:11:45,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:45,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 793 transitions. [2023-11-29 02:11:45,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 34.47826086956522) internal successors, (793), 23 states have internal predecessors, (793), 0 states have call successors, (0), 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 02:11:45,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 82.0) internal successors, (1968), 24 states have internal predecessors, (1968), 0 states have call successors, (0), 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 02:11:45,183 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 82.0) internal successors, (1968), 24 states have internal predecessors, (1968), 0 states have call successors, (0), 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 02:11:45,183 INFO L175 Difference]: Start difference. First operand has 173 places, 160 transitions, 1197 flow. Second operand 23 states and 793 transitions. [2023-11-29 02:11:45,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 474 transitions, 3688 flow [2023-11-29 02:11:45,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 474 transitions, 3613 flow, removed 9 selfloop flow, removed 9 redundant places. [2023-11-29 02:11:45,598 INFO L231 Difference]: Finished difference. Result has 190 places, 164 transitions, 1308 flow [2023-11-29 02:11:45,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1122, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1308, PETRI_PLACES=190, PETRI_TRANSITIONS=164} [2023-11-29 02:11:45,598 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 109 predicate places. [2023-11-29 02:11:45,598 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 164 transitions, 1308 flow [2023-11-29 02:11:45,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 25.608695652173914) internal successors, (589), 23 states have internal predecessors, (589), 0 states have call successors, (0), 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 02:11:45,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:45,599 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:45,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 02:11:45,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 02:11:45,799 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-11-29 02:11:45,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:45,800 INFO L85 PathProgramCache]: Analyzing trace with hash 628245894, now seen corresponding path program 1 times [2023-11-29 02:11:45,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:45,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114638280] [2023-11-29 02:11:45,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:45,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:45,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:45,865 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 02:11:45,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:45,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114638280] [2023-11-29 02:11:45,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114638280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:11:45,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:11:45,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:11:45,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422348199] [2023-11-29 02:11:45,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:11:45,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:11:45,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:45,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:11:45,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:11:45,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 82 [2023-11-29 02:11:45,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 164 transitions, 1308 flow. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:11:45,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:45,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 82 [2023-11-29 02:11:45,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:11:52,124 INFO L124 PetriNetUnfolderBase]: 25140/47974 cut-off events. [2023-11-29 02:11:52,124 INFO L125 PetriNetUnfolderBase]: For 133676/135188 co-relation queries the response was YES. [2023-11-29 02:11:52,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160140 conditions, 47974 events. 25140/47974 cut-off events. For 133676/135188 co-relation queries the response was YES. Maximal size of possible extension queue 1200. Compared 439902 event pairs, 6354 based on Foata normal form. 592/47898 useless extension candidates. Maximal degree in co-relation 160096. Up to 14096 conditions per place. [2023-11-29 02:11:52,587 INFO L140 encePairwiseOnDemand]: 78/82 looper letters, 208 selfloop transitions, 17 changer transitions 0/263 dead transitions. [2023-11-29 02:11:52,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 263 transitions, 2448 flow [2023-11-29 02:11:52,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:11:52,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:11:52,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 223 transitions. [2023-11-29 02:11:52,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6798780487804879 [2023-11-29 02:11:52,588 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 223 transitions. [2023-11-29 02:11:52,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 223 transitions. [2023-11-29 02:11:52,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:11:52,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 223 transitions. [2023-11-29 02:11:52,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:11:52,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 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 02:11:52,589 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 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 02:11:52,589 INFO L175 Difference]: Start difference. First operand has 190 places, 164 transitions, 1308 flow. Second operand 4 states and 223 transitions. [2023-11-29 02:11:52,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 263 transitions, 2448 flow [2023-11-29 02:11:54,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 263 transitions, 2298 flow, removed 3 selfloop flow, removed 17 redundant places. [2023-11-29 02:11:54,274 INFO L231 Difference]: Finished difference. Result has 178 places, 171 transitions, 1336 flow [2023-11-29 02:11:54,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1200, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1336, PETRI_PLACES=178, PETRI_TRANSITIONS=171} [2023-11-29 02:11:54,275 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 97 predicate places. [2023-11-29 02:11:54,275 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 171 transitions, 1336 flow [2023-11-29 02:11:54,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:11:54,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:11:54,275 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:54,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 02:11:54,275 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-11-29 02:11:54,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:54,276 INFO L85 PathProgramCache]: Analyzing trace with hash 587310032, now seen corresponding path program 1 times [2023-11-29 02:11:54,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:54,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396481855] [2023-11-29 02:11:54,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:54,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:54,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:54,413 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:11:54,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:54,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396481855] [2023-11-29 02:11:54,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396481855] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:11:54,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201864324] [2023-11-29 02:11:54,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:54,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:54,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:11:54,415 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:11:54,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 02:11:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:54,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:11:54,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:11:54,620 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 02:11:54,621 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:11:54,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201864324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:11:54,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:11:54,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-11-29 02:11:54,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668595026] [2023-11-29 02:11:54,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:11:54,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:11:54,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:54,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:11:54,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:11:54,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 82 [2023-11-29 02:11:54,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 171 transitions, 1336 flow. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 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 02:11:54,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:11:54,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 82 [2023-11-29 02:11:54,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:12:04,642 INFO L124 PetriNetUnfolderBase]: 38187/72326 cut-off events. [2023-11-29 02:12:04,642 INFO L125 PetriNetUnfolderBase]: For 233360/236360 co-relation queries the response was YES. [2023-11-29 02:12:05,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258412 conditions, 72326 events. 38187/72326 cut-off events. For 233360/236360 co-relation queries the response was YES. Maximal size of possible extension queue 1853. Compared 703277 event pairs, 9790 based on Foata normal form. 666/71065 useless extension candidates. Maximal degree in co-relation 258366. Up to 22278 conditions per place. [2023-11-29 02:12:05,473 INFO L140 encePairwiseOnDemand]: 79/82 looper letters, 203 selfloop transitions, 17 changer transitions 0/258 dead transitions. [2023-11-29 02:12:05,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 258 transitions, 2362 flow [2023-11-29 02:12:05,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:12:05,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:12:05,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2023-11-29 02:12:05,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6615853658536586 [2023-11-29 02:12:05,474 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 217 transitions. [2023-11-29 02:12:05,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 217 transitions. [2023-11-29 02:12:05,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:12:05,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 217 transitions. [2023-11-29 02:12:05,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 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 02:12:05,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 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 02:12:05,475 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 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 02:12:05,475 INFO L175 Difference]: Start difference. First operand has 178 places, 171 transitions, 1336 flow. Second operand 4 states and 217 transitions. [2023-11-29 02:12:05,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 258 transitions, 2362 flow [2023-11-29 02:12:10,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 258 transitions, 2328 flow, removed 17 selfloop flow, removed 0 redundant places. [2023-11-29 02:12:10,672 INFO L231 Difference]: Finished difference. Result has 183 places, 181 transitions, 1519 flow [2023-11-29 02:12:10,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1519, PETRI_PLACES=183, PETRI_TRANSITIONS=181} [2023-11-29 02:12:10,673 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 102 predicate places. [2023-11-29 02:12:10,673 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 181 transitions, 1519 flow [2023-11-29 02:12:10,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 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 02:12:10,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:12:10,673 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:12:10,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-29 02:12:10,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 02:12:10,874 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-11-29 02:12:10,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:10,874 INFO L85 PathProgramCache]: Analyzing trace with hash -79044179, now seen corresponding path program 2 times [2023-11-29 02:12:10,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:10,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300442390] [2023-11-29 02:12:10,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:10,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:12,206 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:12:12,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:12:12,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300442390] [2023-11-29 02:12:12,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300442390] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:12:12,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19611081] [2023-11-29 02:12:12,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:12:12,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:12,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:12,207 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:12:12,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 02:12:12,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 02:12:12,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:12:12,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 02:12:12,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:12:12,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2023-11-29 02:12:12,481 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 02:12:12,482 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:12:12,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19611081] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:12:12,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:12:12,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 14 [2023-11-29 02:12:12,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803112950] [2023-11-29 02:12:12,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:12:12,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:12:12,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:12:12,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:12:12,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:12:12,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 82 [2023-11-29 02:12:12,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 181 transitions, 1519 flow. Second operand has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 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 02:12:12,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:12:12,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 82 [2023-11-29 02:12:12,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:12:23,484 INFO L124 PetriNetUnfolderBase]: 44017/79562 cut-off events. [2023-11-29 02:12:23,485 INFO L125 PetriNetUnfolderBase]: For 274257/278106 co-relation queries the response was YES. [2023-11-29 02:12:24,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289406 conditions, 79562 events. 44017/79562 cut-off events. For 274257/278106 co-relation queries the response was YES. Maximal size of possible extension queue 1928. Compared 745596 event pairs, 8596 based on Foata normal form. 950/80092 useless extension candidates. Maximal degree in co-relation 289356. Up to 29333 conditions per place. [2023-11-29 02:12:24,375 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 220 selfloop transitions, 17 changer transitions 1/269 dead transitions. [2023-11-29 02:12:24,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 269 transitions, 2547 flow [2023-11-29 02:12:24,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:12:24,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 02:12:24,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 237 transitions. [2023-11-29 02:12:24,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5780487804878048 [2023-11-29 02:12:24,376 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 237 transitions. [2023-11-29 02:12:24,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 237 transitions. [2023-11-29 02:12:24,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:12:24,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 237 transitions. [2023-11-29 02:12:24,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 47.4) internal successors, (237), 5 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:24,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 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 02:12:24,377 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 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 02:12:24,377 INFO L175 Difference]: Start difference. First operand has 183 places, 181 transitions, 1519 flow. Second operand 5 states and 237 transitions. [2023-11-29 02:12:24,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 269 transitions, 2547 flow [2023-11-29 02:12:29,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 269 transitions, 2528 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-11-29 02:12:29,177 INFO L231 Difference]: Finished difference. Result has 186 places, 180 transitions, 1529 flow [2023-11-29 02:12:29,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1495, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1529, PETRI_PLACES=186, PETRI_TRANSITIONS=180} [2023-11-29 02:12:29,177 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 105 predicate places. [2023-11-29 02:12:29,177 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 180 transitions, 1529 flow [2023-11-29 02:12:29,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 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 02:12:29,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:12:29,178 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:12:29,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 02:12:29,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:29,378 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-11-29 02:12:29,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:29,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1844598668, now seen corresponding path program 2 times [2023-11-29 02:12:29,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:29,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143755809] [2023-11-29 02:12:29,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:29,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:30,492 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:12:30,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:12:30,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143755809] [2023-11-29 02:12:30,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143755809] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:12:30,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095239985] [2023-11-29 02:12:30,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:12:30,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:30,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:30,494 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:12:30,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 02:12:30,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 02:12:30,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:12:30,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 02:12:30,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:12:30,900 INFO L349 Elim1Store]: treesize reduction 3, result has 85.0 percent of original size [2023-11-29 02:12:30,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 27 [2023-11-29 02:12:30,927 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 02:12:30,927 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:12:30,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095239985] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:12:30,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:12:30,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 16 [2023-11-29 02:12:30,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668143734] [2023-11-29 02:12:30,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:12:30,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:12:30,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:12:30,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:12:30,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-29 02:12:31,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 82 [2023-11-29 02:12:31,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 180 transitions, 1529 flow. Second operand has 7 states, 7 states have (on average 31.857142857142858) internal successors, (223), 7 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:31,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:12:31,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 82 [2023-11-29 02:12:31,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:12:43,760 INFO L124 PetriNetUnfolderBase]: 52305/89898 cut-off events. [2023-11-29 02:12:43,760 INFO L125 PetriNetUnfolderBase]: For 329485/333915 co-relation queries the response was YES. [2023-11-29 02:12:44,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330879 conditions, 89898 events. 52305/89898 cut-off events. For 329485/333915 co-relation queries the response was YES. Maximal size of possible extension queue 2006. Compared 797492 event pairs, 10346 based on Foata normal form. 1220/90253 useless extension candidates. Maximal degree in co-relation 330828. Up to 38435 conditions per place. [2023-11-29 02:12:44,755 INFO L140 encePairwiseOnDemand]: 74/82 looper letters, 252 selfloop transitions, 24 changer transitions 7/312 dead transitions. [2023-11-29 02:12:44,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 312 transitions, 2917 flow [2023-11-29 02:12:44,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:12:44,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 02:12:44,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 320 transitions. [2023-11-29 02:12:44,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5574912891986062 [2023-11-29 02:12:44,756 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 320 transitions. [2023-11-29 02:12:44,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 320 transitions. [2023-11-29 02:12:44,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:12:44,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 320 transitions. [2023-11-29 02:12:44,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:44,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 82.0) internal successors, (656), 8 states have internal predecessors, (656), 0 states have call successors, (0), 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 02:12:44,758 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 82.0) internal successors, (656), 8 states have internal predecessors, (656), 0 states have call successors, (0), 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 02:12:44,758 INFO L175 Difference]: Start difference. First operand has 186 places, 180 transitions, 1529 flow. Second operand 7 states and 320 transitions. [2023-11-29 02:12:44,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 312 transitions, 2917 flow [2023-11-29 02:12:49,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 312 transitions, 2880 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 02:12:49,048 INFO L231 Difference]: Finished difference. Result has 192 places, 187 transitions, 1697 flow [2023-11-29 02:12:49,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1507, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1697, PETRI_PLACES=192, PETRI_TRANSITIONS=187} [2023-11-29 02:12:49,048 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 111 predicate places. [2023-11-29 02:12:49,048 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 187 transitions, 1697 flow [2023-11-29 02:12:49,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.857142857142858) internal successors, (223), 7 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:12:49,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:12:49,048 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:12:49,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 02:12:49,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:49,249 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-11-29 02:12:49,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:12:49,249 INFO L85 PathProgramCache]: Analyzing trace with hash 699290112, now seen corresponding path program 1 times [2023-11-29 02:12:49,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:12:49,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214032709] [2023-11-29 02:12:49,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:49,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:12:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:50,531 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:12:50,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:12:50,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214032709] [2023-11-29 02:12:50,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214032709] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:12:50,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514718315] [2023-11-29 02:12:50,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:12:50,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:12:50,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:12:50,533 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:12:50,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 02:12:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:12:50,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 02:12:50,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:12:50,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2023-11-29 02:12:50,858 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:12:50,858 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:12:50,910 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 02:12:50,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2023-11-29 02:12:50,983 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 02:12:50,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514718315] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:12:50,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:12:50,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11, 7] total 20 [2023-11-29 02:12:50,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843127117] [2023-11-29 02:12:50,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:12:50,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:12:50,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:12:50,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:12:50,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2023-11-29 02:12:51,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 82 [2023-11-29 02:12:51,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 187 transitions, 1697 flow. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 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 02:12:51,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:12:51,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 82 [2023-11-29 02:12:51,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:13:02,542 INFO L124 PetriNetUnfolderBase]: 45956/81186 cut-off events. [2023-11-29 02:13:02,542 INFO L125 PetriNetUnfolderBase]: For 331796/336123 co-relation queries the response was YES. [2023-11-29 02:13:03,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305906 conditions, 81186 events. 45956/81186 cut-off events. For 331796/336123 co-relation queries the response was YES. Maximal size of possible extension queue 1925. Compared 740797 event pairs, 8348 based on Foata normal form. 226/80867 useless extension candidates. Maximal degree in co-relation 305852. Up to 29213 conditions per place. [2023-11-29 02:13:03,426 INFO L140 encePairwiseOnDemand]: 76/82 looper letters, 216 selfloop transitions, 28 changer transitions 0/274 dead transitions. [2023-11-29 02:13:03,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 274 transitions, 2726 flow [2023-11-29 02:13:03,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:13:03,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 02:13:03,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 233 transitions. [2023-11-29 02:13:03,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5682926829268292 [2023-11-29 02:13:03,427 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 233 transitions. [2023-11-29 02:13:03,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 233 transitions. [2023-11-29 02:13:03,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:13:03,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 233 transitions. [2023-11-29 02:13:03,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 46.6) internal successors, (233), 5 states have internal predecessors, (233), 0 states have call successors, (0), 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 02:13:03,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 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 02:13:03,428 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 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 02:13:03,428 INFO L175 Difference]: Start difference. First operand has 192 places, 187 transitions, 1697 flow. Second operand 5 states and 233 transitions. [2023-11-29 02:13:03,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 274 transitions, 2726 flow [2023-11-29 02:13:07,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 274 transitions, 2658 flow, removed 21 selfloop flow, removed 6 redundant places. [2023-11-29 02:13:07,891 INFO L231 Difference]: Finished difference. Result has 186 places, 187 transitions, 1732 flow [2023-11-29 02:13:07,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1657, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1732, PETRI_PLACES=186, PETRI_TRANSITIONS=187} [2023-11-29 02:13:07,891 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 105 predicate places. [2023-11-29 02:13:07,891 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 187 transitions, 1732 flow [2023-11-29 02:13:07,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 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 02:13:07,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:13:07,891 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:13:07,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 02:13:08,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 02:13:08,092 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-11-29 02:13:08,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:13:08,092 INFO L85 PathProgramCache]: Analyzing trace with hash -399800023, now seen corresponding path program 1 times [2023-11-29 02:13:08,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:13:08,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620165832] [2023-11-29 02:13:08,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:13:08,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:13:08,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:13:08,199 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 02:13:08,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:13:08,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620165832] [2023-11-29 02:13:08,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620165832] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:13:08,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540659628] [2023-11-29 02:13:08,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:13:08,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:13:08,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:13:08,200 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:13:08,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 02:13:08,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:13:08,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 02:13:08,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:13:08,435 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 02:13:08,435 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:13:08,520 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 02:13:08,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540659628] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:13:08,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:13:08,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-11-29 02:13:08,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911555559] [2023-11-29 02:13:08,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:13:08,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 02:13:08,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:13:08,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 02:13:08,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-11-29 02:13:08,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 82 [2023-11-29 02:13:08,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 187 transitions, 1732 flow. Second operand has 15 states, 15 states have (on average 32.333333333333336) internal successors, (485), 15 states have internal predecessors, (485), 0 states have call successors, (0), 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 02:13:08,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:13:08,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 82 [2023-11-29 02:13:08,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:13:16,964 INFO L124 PetriNetUnfolderBase]: 31492/59414 cut-off events. [2023-11-29 02:13:16,964 INFO L125 PetriNetUnfolderBase]: For 288104/290952 co-relation queries the response was YES. [2023-11-29 02:13:17,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220140 conditions, 59414 events. 31492/59414 cut-off events. For 288104/290952 co-relation queries the response was YES. Maximal size of possible extension queue 1340. Compared 557297 event pairs, 21383 based on Foata normal form. 942/58375 useless extension candidates. Maximal degree in co-relation 220088. Up to 38257 conditions per place. [2023-11-29 02:13:17,763 INFO L140 encePairwiseOnDemand]: 72/82 looper letters, 182 selfloop transitions, 49 changer transitions 13/281 dead transitions. [2023-11-29 02:13:17,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 281 transitions, 2688 flow [2023-11-29 02:13:17,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 02:13:17,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 02:13:17,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 494 transitions. [2023-11-29 02:13:17,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2023-11-29 02:13:17,765 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 494 transitions. [2023-11-29 02:13:17,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 494 transitions. [2023-11-29 02:13:17,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:13:17,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 494 transitions. [2023-11-29 02:13:17,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 38.0) internal successors, (494), 13 states have internal predecessors, (494), 0 states have call successors, (0), 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 02:13:17,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 0 states have call successors, (0), 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 02:13:17,767 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 0 states have call successors, (0), 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 02:13:17,767 INFO L175 Difference]: Start difference. First operand has 186 places, 187 transitions, 1732 flow. Second operand 13 states and 494 transitions. [2023-11-29 02:13:17,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 281 transitions, 2688 flow [2023-11-29 02:13:19,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 281 transitions, 2621 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-29 02:13:19,946 INFO L231 Difference]: Finished difference. Result has 192 places, 181 transitions, 1695 flow [2023-11-29 02:13:19,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1585, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1695, PETRI_PLACES=192, PETRI_TRANSITIONS=181} [2023-11-29 02:13:19,947 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 111 predicate places. [2023-11-29 02:13:19,947 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 181 transitions, 1695 flow [2023-11-29 02:13:19,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 32.333333333333336) internal successors, (485), 15 states have internal predecessors, (485), 0 states have call successors, (0), 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 02:13:19,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:13:19,947 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:13:19,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 02:13:20,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 02:13:20,148 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-11-29 02:13:20,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:13:20,148 INFO L85 PathProgramCache]: Analyzing trace with hash -297426819, now seen corresponding path program 2 times [2023-11-29 02:13:20,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:13:20,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244509485] [2023-11-29 02:13:20,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:13:20,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:13:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:13:20,631 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 02:13:20,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:13:20,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244509485] [2023-11-29 02:13:20,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244509485] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:13:20,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099068092] [2023-11-29 02:13:20,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:13:20,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:13:20,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:13:20,633 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:13:20,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 02:13:20,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 02:13:20,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:13:20,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 02:13:20,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:13:21,024 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 02:13:21,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:13:21,199 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-29 02:13:21,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 02:13:21,394 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 02:13:21,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099068092] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:13:21,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:13:21,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 20 [2023-11-29 02:13:21,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538139693] [2023-11-29 02:13:21,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:13:21,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 02:13:21,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:13:21,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 02:13:21,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2023-11-29 02:13:21,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 82 [2023-11-29 02:13:21,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 181 transitions, 1695 flow. Second operand has 22 states, 22 states have (on average 35.81818181818182) internal successors, (788), 22 states have internal predecessors, (788), 0 states have call successors, (0), 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 02:13:21,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:13:21,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 82 [2023-11-29 02:13:21,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:13:44,590 INFO L124 PetriNetUnfolderBase]: 71903/134681 cut-off events. [2023-11-29 02:13:44,590 INFO L125 PetriNetUnfolderBase]: For 768672/777299 co-relation queries the response was YES. [2023-11-29 02:13:45,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500359 conditions, 134681 events. 71903/134681 cut-off events. For 768672/777299 co-relation queries the response was YES. Maximal size of possible extension queue 2802. Compared 1389168 event pairs, 4871 based on Foata normal form. 18122/150747 useless extension candidates. Maximal degree in co-relation 500308. Up to 14707 conditions per place. [2023-11-29 02:13:46,250 INFO L140 encePairwiseOnDemand]: 69/82 looper letters, 911 selfloop transitions, 127 changer transitions 12/1085 dead transitions. [2023-11-29 02:13:46,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 1085 transitions, 11922 flow [2023-11-29 02:13:46,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-29 02:13:46,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-11-29 02:13:46,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 2139 transitions. [2023-11-29 02:13:46,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434451219512195 [2023-11-29 02:13:46,255 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 2139 transitions. [2023-11-29 02:13:46,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 2139 transitions. [2023-11-29 02:13:46,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:13:46,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 2139 transitions. [2023-11-29 02:13:46,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 44.5625) internal successors, (2139), 48 states have internal predecessors, (2139), 0 states have call successors, (0), 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 02:13:46,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 82.0) internal successors, (4018), 49 states have internal predecessors, (4018), 0 states have call successors, (0), 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 02:13:46,263 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 82.0) internal successors, (4018), 49 states have internal predecessors, (4018), 0 states have call successors, (0), 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 02:13:46,263 INFO L175 Difference]: Start difference. First operand has 192 places, 181 transitions, 1695 flow. Second operand 48 states and 2139 transitions. [2023-11-29 02:13:46,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 1085 transitions, 11922 flow [2023-11-29 02:13:53,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 1085 transitions, 11707 flow, removed 6 selfloop flow, removed 10 redundant places. [2023-11-29 02:13:53,167 INFO L231 Difference]: Finished difference. Result has 229 places, 271 transitions, 2758 flow [2023-11-29 02:13:53,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1603, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=2758, PETRI_PLACES=229, PETRI_TRANSITIONS=271} [2023-11-29 02:13:53,167 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 148 predicate places. [2023-11-29 02:13:53,168 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 271 transitions, 2758 flow [2023-11-29 02:13:53,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 35.81818181818182) internal successors, (788), 22 states have internal predecessors, (788), 0 states have call successors, (0), 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 02:13:53,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:13:53,168 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:13:53,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 02:13:53,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:13:53,369 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-11-29 02:13:53,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:13:53,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1212901612, now seen corresponding path program 1 times [2023-11-29 02:13:53,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:13:53,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037976753] [2023-11-29 02:13:53,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:13:53,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:13:53,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:13:53,945 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 02:13:53,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:13:53,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037976753] [2023-11-29 02:13:53,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037976753] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:13:53,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039081359] [2023-11-29 02:13:53,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:13:53,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:13:53,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:13:53,947 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:13:53,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 02:13:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:13:54,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 02:13:54,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:13:54,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-29 02:13:54,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:13:54,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:13:54,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:13:54,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:13:54,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:13:54,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 02:13:54,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:13:54,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 02:13:54,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:13:54,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:13:54,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:13:54,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:13:54,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:13:54,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 02:13:54,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:13:54,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 02:13:54,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:13:54,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:13:54,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:13:54,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 02:13:54,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:13:54,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:13:54,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:13:54,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 02:13:54,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:13:54,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 02:13:54,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:13:54,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 02:13:54,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:13:54,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:13:54,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:13:54,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 02:13:54,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:13:54,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:13:54,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:13:54,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:13:54,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:13:54,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 02:13:54,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:13:54,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:13:54,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:13:54,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 02:13:54,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:13:54,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:13:54,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:13:54,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 02:13:54,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-29 02:13:54,389 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 02:13:54,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 02:13:54,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 02:13:54,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 02:13:54,600 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-29 02:13:54,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2023-11-29 02:13:54,619 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:13:54,620 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:13:55,494 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 02:13:55,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 45 [2023-11-29 02:13:55,506 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-11-29 02:13:55,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 56 [2023-11-29 02:13:55,515 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-29 02:13:55,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 28 [2023-11-29 02:13:55,719 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:13:55,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039081359] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:13:55,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:13:55,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 32 [2023-11-29 02:13:55,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017712294] [2023-11-29 02:13:55,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:13:55,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-29 02:13:55,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:13:55,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-29 02:13:55,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=950, Unknown=2, NotChecked=0, Total=1122 [2023-11-29 02:13:59,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:13:59,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 82 [2023-11-29 02:13:59,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 271 transitions, 2758 flow. Second operand has 34 states, 34 states have (on average 25.647058823529413) internal successors, (872), 34 states have internal predecessors, (872), 0 states have call successors, (0), 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 02:13:59,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:13:59,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 82 [2023-11-29 02:13:59,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:14:41,505 INFO L124 PetriNetUnfolderBase]: 146579/251430 cut-off events. [2023-11-29 02:14:41,505 INFO L125 PetriNetUnfolderBase]: For 1102115/1111041 co-relation queries the response was YES. [2023-11-29 02:14:43,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 918697 conditions, 251430 events. 146579/251430 cut-off events. For 1102115/1111041 co-relation queries the response was YES. Maximal size of possible extension queue 5548. Compared 2549135 event pairs, 25467 based on Foata normal form. 4980/250887 useless extension candidates. Maximal degree in co-relation 918645. Up to 75458 conditions per place. [2023-11-29 02:14:44,505 INFO L140 encePairwiseOnDemand]: 69/82 looper letters, 579 selfloop transitions, 154 changer transitions 31/793 dead transitions. [2023-11-29 02:14:44,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 793 transitions, 8521 flow [2023-11-29 02:14:44,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 02:14:44,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-29 02:14:44,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1026 transitions. [2023-11-29 02:14:44,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4036191974822974 [2023-11-29 02:14:44,507 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1026 transitions. [2023-11-29 02:14:44,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1026 transitions. [2023-11-29 02:14:44,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:14:44,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1026 transitions. [2023-11-29 02:14:44,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 33.096774193548384) internal successors, (1026), 31 states have internal predecessors, (1026), 0 states have call successors, (0), 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 02:14:44,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 82.0) internal successors, (2624), 32 states have internal predecessors, (2624), 0 states have call successors, (0), 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 02:14:44,511 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 82.0) internal successors, (2624), 32 states have internal predecessors, (2624), 0 states have call successors, (0), 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 02:14:44,511 INFO L175 Difference]: Start difference. First operand has 229 places, 271 transitions, 2758 flow. Second operand 31 states and 1026 transitions. [2023-11-29 02:14:44,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 793 transitions, 8521 flow [2023-11-29 02:15:07,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 793 transitions, 7928 flow, removed 223 selfloop flow, removed 16 redundant places. [2023-11-29 02:15:07,166 INFO L231 Difference]: Finished difference. Result has 249 places, 314 transitions, 3404 flow [2023-11-29 02:15:07,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=2337, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=3404, PETRI_PLACES=249, PETRI_TRANSITIONS=314} [2023-11-29 02:15:07,166 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 168 predicate places. [2023-11-29 02:15:07,166 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 314 transitions, 3404 flow [2023-11-29 02:15:07,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 25.647058823529413) internal successors, (872), 34 states have internal predecessors, (872), 0 states have call successors, (0), 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 02:15:07,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:15:07,167 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:15:07,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 02:15:07,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-29 02:15:07,367 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 44 more)] === [2023-11-29 02:15:07,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:07,367 INFO L85 PathProgramCache]: Analyzing trace with hash -403873020, now seen corresponding path program 2 times [2023-11-29 02:15:07,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:07,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820121880] [2023-11-29 02:15:07,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:07,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:07,882 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 02:15:07,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:07,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820121880] [2023-11-29 02:15:07,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820121880] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:15:07,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560160585] [2023-11-29 02:15:07,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:15:07,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:15:07,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:15:07,884 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:15:07,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03278493-3ea9-416b-98a2-0dcdb344bce9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 02:15:08,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 02:15:08,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:15:08,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 02:15:08,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:15:08,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2023-11-29 02:15:08,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:15:08,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 02:15:08,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:15:08,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:15:08,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:15:08,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 02:15:08,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:15:08,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:15:08,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:15:08,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 02:15:08,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:15:08,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:15:08,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:15:08,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 02:15:08,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:15:08,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:15:08,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:15:08,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 02:15:08,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:15:08,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 02:15:08,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:15:08,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:15:08,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:15:08,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:15:08,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:15:08,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 02:15:08,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:15:08,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:15:08,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:15:08,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 02:15:08,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:15:08,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:15:08,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:15:08,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 02:15:08,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:15:08,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:15:08,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:15:08,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 02:15:08,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:15:08,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:15:08,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:15:08,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 02:15:08,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:15:08,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 02:15:08,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 02:15:08,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 02:15:08,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-29 02:15:08,367 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 02:15:08,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 02:15:08,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 02:15:08,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 02:15:08,686 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2023-11-29 02:15:08,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2023-11-29 02:15:08,707 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:15:08,707 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:15:09,565 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 02:15:09,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 45 [2023-11-29 02:15:09,577 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-11-29 02:15:09,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 56 [2023-11-29 02:15:09,588 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-29 02:15:09,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 28 [2023-11-29 02:15:09,836 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:15:09,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560160585] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:15:09,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:15:09,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 32 [2023-11-29 02:15:09,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278013208] [2023-11-29 02:15:09,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:15:09,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-29 02:15:09,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:09,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-29 02:15:09,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=992, Unknown=1, NotChecked=0, Total=1122 [2023-11-29 02:15:13,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:15:18,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:15:18,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 82 [2023-11-29 02:15:18,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 314 transitions, 3404 flow. Second operand has 34 states, 34 states have (on average 25.647058823529413) internal successors, (872), 34 states have internal predecessors, (872), 0 states have call successors, (0), 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 02:15:18,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:15:18,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 82 [2023-11-29 02:15:18,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand