./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/test-context1.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_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/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_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-context1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/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_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/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 d63a80d2bfe8ff8bb62e6b5083cee589f2cb0f37dc67867654ab7601d82af23e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:11:33,251 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:11:33,333 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 04:11:33,337 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:11:33,338 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:11:33,359 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:11:33,360 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:11:33,360 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:11:33,361 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:11:33,361 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:11:33,362 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:11:33,362 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:11:33,363 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:11:33,364 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:11:33,364 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:11:33,365 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:11:33,365 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:11:33,366 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:11:33,366 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:11:33,367 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:11:33,368 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:11:33,369 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:11:33,369 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:11:33,370 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:11:33,370 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 04:11:33,371 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:11:33,371 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:11:33,371 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:11:33,372 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:11:33,372 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:11:33,373 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:11:33,373 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:11:33,373 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:11:33,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:11:33,374 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:11:33,374 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:11:33,374 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:11:33,374 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:11:33,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:11:33,375 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:11:33,375 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:11:33,375 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:11:33,375 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:11:33,375 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:11:33,376 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_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d63a80d2bfe8ff8bb62e6b5083cee589f2cb0f37dc67867654ab7601d82af23e [2023-11-29 04:11:33,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:11:33,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:11:33,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:11:33,634 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:11:33,634 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:11:33,635 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/test-context1.wvr.c [2023-11-29 04:11:36,373 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:11:36,564 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:11:36,564 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/sv-benchmarks/c/weaver/test-context1.wvr.c [2023-11-29 04:11:36,573 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/data/26799ce11/b458b09f8bf44c869ef8ee9f20fb49bf/FLAG5630da780 [2023-11-29 04:11:36,586 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/data/26799ce11/b458b09f8bf44c869ef8ee9f20fb49bf [2023-11-29 04:11:36,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:11:36,589 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:11:36,591 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:11:36,591 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:11:36,596 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:11:36,597 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:11:36" (1/1) ... [2023-11-29 04:11:36,598 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c0bb814 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:11:36, skipping insertion in model container [2023-11-29 04:11:36,598 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:11:36" (1/1) ... [2023-11-29 04:11:36,623 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:11:36,810 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:11:36,821 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:11:36,846 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:11:36,854 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:11:36,855 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:11:36,863 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:11:36,863 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:11:36 WrapperNode [2023-11-29 04:11:36,864 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:11:36,865 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:11:36,865 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:11:36,865 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:11:36,872 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:11:36" (1/1) ... [2023-11-29 04:11:36,881 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:11:36" (1/1) ... [2023-11-29 04:11:36,908 INFO L138 Inliner]: procedures = 24, calls = 35, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 157 [2023-11-29 04:11:36,908 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:11:36,909 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:11:36,909 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:11:36,909 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:11:36,921 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:11:36" (1/1) ... [2023-11-29 04:11:36,921 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:11:36" (1/1) ... [2023-11-29 04:11:36,925 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:11:36" (1/1) ... [2023-11-29 04:11:36,955 INFO L175 MemorySlicer]: Split 9 memory accesses to 4 slices as follows [2, 2, 2, 3]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-11-29 04:11:36,955 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:11:36" (1/1) ... [2023-11-29 04:11:36,955 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:11:36" (1/1) ... [2023-11-29 04:11:36,963 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:11:36" (1/1) ... [2023-11-29 04:11:36,982 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:11:36" (1/1) ... [2023-11-29 04:11:36,984 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:11:36" (1/1) ... [2023-11-29 04:11:36,986 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:11:36" (1/1) ... [2023-11-29 04:11:36,989 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:11:36,990 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:11:36,991 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:11:36,991 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:11:36,992 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:11:36" (1/1) ... [2023-11-29 04:11:36,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:11:37,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:11:37,022 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:11:37,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:11:37,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:11:37,052 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 04:11:37,053 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 04:11:37,053 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 04:11:37,053 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 04:11:37,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:11:37,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 04:11:37,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 04:11:37,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 04:11:37,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 04:11:37,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 04:11:37,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 04:11:37,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 04:11:37,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 04:11:37,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 04:11:37,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 04:11:37,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 04:11:37,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:11:37,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:11:37,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 04:11:37,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 04:11:37,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 04:11:37,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 04:11:37,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:11:37,057 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 04:11:37,240 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:11:37,242 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:11:37,502 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:11:37,760 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:11:37,760 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 04:11:37,761 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:11:37 BoogieIcfgContainer [2023-11-29 04:11:37,761 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:11:37,764 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:11:37,764 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:11:37,767 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:11:37,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:11:36" (1/3) ... [2023-11-29 04:11:37,769 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30523a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:11:37, skipping insertion in model container [2023-11-29 04:11:37,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:11:36" (2/3) ... [2023-11-29 04:11:37,769 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30523a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:11:37, skipping insertion in model container [2023-11-29 04:11:37,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:11:37" (3/3) ... [2023-11-29 04:11:37,771 INFO L112 eAbstractionObserver]: Analyzing ICFG test-context1.wvr.c [2023-11-29 04:11:37,779 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 04:11:37,790 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:11:37,791 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-29 04:11:37,791 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 04:11:37,856 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 04:11:37,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 43 transitions, 100 flow [2023-11-29 04:11:37,957 INFO L124 PetriNetUnfolderBase]: 5/41 cut-off events. [2023-11-29 04:11:37,958 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 04:11:37,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 41 events. 5/41 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 108 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2023-11-29 04:11:37,961 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 43 transitions, 100 flow [2023-11-29 04:11:37,965 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 39 transitions, 87 flow [2023-11-29 04:11:37,975 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:11:37,982 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;@7317463c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:11:37,983 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-11-29 04:11:37,986 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 04:11:37,987 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 04:11:37,987 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 04:11:37,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:11:37,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 04:11:37,988 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-29 04:11:37,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:11:37,994 INFO L85 PathProgramCache]: Analyzing trace with hash 517212, now seen corresponding path program 1 times [2023-11-29 04:11:38,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:11:38,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054072057] [2023-11-29 04:11:38,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:11:38,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:11:38,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:11:38,267 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 04:11:38,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:11:38,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054072057] [2023-11-29 04:11:38,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054072057] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:11:38,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:11:38,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:11:38,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107833383] [2023-11-29 04:11:38,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:11:38,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:11:38,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:11:38,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:11:38,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:11:38,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2023-11-29 04:11:38,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:38,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:11:38,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2023-11-29 04:11:38,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:11:38,524 INFO L124 PetriNetUnfolderBase]: 244/437 cut-off events. [2023-11-29 04:11:38,524 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-11-29 04:11:38,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 873 conditions, 437 events. 244/437 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2047 event pairs, 174 based on Foata normal form. 68/325 useless extension candidates. Maximal degree in co-relation 778. Up to 404 conditions per place. [2023-11-29 04:11:38,531 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 25 selfloop transitions, 4 changer transitions 0/34 dead transitions. [2023-11-29 04:11:38,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 34 transitions, 135 flow [2023-11-29 04:11:38,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:11:38,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:11:38,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2023-11-29 04:11:38,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38953488372093026 [2023-11-29 04:11:38,545 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 67 transitions. [2023-11-29 04:11:38,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 67 transitions. [2023-11-29 04:11:38,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:11:38,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 67 transitions. [2023-11-29 04:11:38,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:38,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:38,556 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:38,558 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 87 flow. Second operand 4 states and 67 transitions. [2023-11-29 04:11:38,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 34 transitions, 135 flow [2023-11-29 04:11:38,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 34 transitions, 130 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 04:11:38,564 INFO L231 Difference]: Finished difference. Result has 37 places, 34 transitions, 95 flow [2023-11-29 04:11:38,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=37, PETRI_TRANSITIONS=34} [2023-11-29 04:11:38,570 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -4 predicate places. [2023-11-29 04:11:38,570 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 34 transitions, 95 flow [2023-11-29 04:11:38,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:38,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:11:38,571 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 04:11:38,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 04:11:38,572 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-29 04:11:38,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:11:38,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1771125798, now seen corresponding path program 1 times [2023-11-29 04:11:38,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:11:38,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32280336] [2023-11-29 04:11:38,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:11:38,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:11:38,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:11:38,710 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 04:11:38,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:11:38,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32280336] [2023-11-29 04:11:38,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32280336] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:11:38,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749735432] [2023-11-29 04:11:38,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:11:38,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:11:38,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:11:38,716 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:11:38,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:11:38,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:11:38,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:11:38,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:11:38,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:11:38,894 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:11:38,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749735432] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:11:38,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:11:38,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 04:11:38,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581985007] [2023-11-29 04:11:38,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:11:38,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:11:38,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:11:38,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:11:38,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:11:38,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2023-11-29 04:11:38,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 95 flow. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:38,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:11:38,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2023-11-29 04:11:38,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:11:39,112 INFO L124 PetriNetUnfolderBase]: 244/436 cut-off events. [2023-11-29 04:11:39,113 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-29 04:11:39,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 875 conditions, 436 events. 244/436 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2032 event pairs, 174 based on Foata normal form. 1/258 useless extension candidates. Maximal degree in co-relation 848. Up to 399 conditions per place. [2023-11-29 04:11:39,119 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 21 selfloop transitions, 7 changer transitions 0/33 dead transitions. [2023-11-29 04:11:39,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 33 transitions, 147 flow [2023-11-29 04:11:39,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:11:39,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:11:39,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2023-11-29 04:11:39,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2751937984496124 [2023-11-29 04:11:39,121 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 71 transitions. [2023-11-29 04:11:39,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 71 transitions. [2023-11-29 04:11:39,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:11:39,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 71 transitions. [2023-11-29 04:11:39,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:39,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:39,125 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:39,125 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 95 flow. Second operand 6 states and 71 transitions. [2023-11-29 04:11:39,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 33 transitions, 147 flow [2023-11-29 04:11:39,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 33 transitions, 144 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:11:39,128 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 102 flow [2023-11-29 04:11:39,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=102, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2023-11-29 04:11:39,129 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -1 predicate places. [2023-11-29 04:11:39,129 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 102 flow [2023-11-29 04:11:39,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:39,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:11:39,130 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 04:11:39,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:11:39,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:11:39,331 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-29 04:11:39,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:11:39,332 INFO L85 PathProgramCache]: Analyzing trace with hash 929675593, now seen corresponding path program 1 times [2023-11-29 04:11:39,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:11:39,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511807037] [2023-11-29 04:11:39,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:11:39,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:11:39,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:11:39,427 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 04:11:39,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:11:39,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511807037] [2023-11-29 04:11:39,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511807037] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:11:39,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785514347] [2023-11-29 04:11:39,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:11:39,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:11:39,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:11:39,429 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:11:39,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:11:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:11:39,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:11:39,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:11:39,552 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 04:11:39,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:11:39,595 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 04:11:39,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785514347] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:11:39,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:11:39,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 04:11:39,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941550749] [2023-11-29 04:11:39,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:11:39,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 04:11:39,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:11:39,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 04:11:39,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:11:39,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2023-11-29 04:11:39,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 102 flow. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:39,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:11:39,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2023-11-29 04:11:39,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:11:39,803 INFO L124 PetriNetUnfolderBase]: 247/448 cut-off events. [2023-11-29 04:11:39,803 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-11-29 04:11:39,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 919 conditions, 448 events. 247/448 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2141 event pairs, 174 based on Foata normal form. 3/270 useless extension candidates. Maximal degree in co-relation 849. Up to 406 conditions per place. [2023-11-29 04:11:39,808 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 24 selfloop transitions, 13 changer transitions 0/42 dead transitions. [2023-11-29 04:11:39,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 42 transitions, 230 flow [2023-11-29 04:11:39,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:11:39,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:11:39,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2023-11-29 04:11:39,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2558139534883721 [2023-11-29 04:11:39,811 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 110 transitions. [2023-11-29 04:11:39,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 110 transitions. [2023-11-29 04:11:39,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:11:39,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 110 transitions. [2023-11-29 04:11:39,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 11.0) internal successors, (110), 10 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 04:11:39,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 43.0) internal successors, (473), 11 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:39,815 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 43.0) internal successors, (473), 11 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:39,815 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 102 flow. Second operand 10 states and 110 transitions. [2023-11-29 04:11:39,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 42 transitions, 230 flow [2023-11-29 04:11:39,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 42 transitions, 184 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-11-29 04:11:39,818 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 154 flow [2023-11-29 04:11:39,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=154, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2023-11-29 04:11:39,819 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2023-11-29 04:11:39,820 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 154 flow [2023-11-29 04:11:39,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:39,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:11:39,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:11:39,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 04:11:40,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:11:40,021 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-29 04:11:40,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:11:40,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1003832879, now seen corresponding path program 1 times [2023-11-29 04:11:40,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:11:40,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740635020] [2023-11-29 04:11:40,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:11:40,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:11:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:11:40,075 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 04:11:40,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:11:40,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740635020] [2023-11-29 04:11:40,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740635020] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:11:40,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:11:40,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 04:11:40,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66076457] [2023-11-29 04:11:40,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:11:40,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:11:40,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:11:40,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:11:40,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:11:40,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2023-11-29 04:11:40,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:40,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:11:40,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2023-11-29 04:11:40,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:11:40,206 INFO L124 PetriNetUnfolderBase]: 288/539 cut-off events. [2023-11-29 04:11:40,206 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-11-29 04:11:40,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1105 conditions, 539 events. 288/539 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2735 event pairs, 105 based on Foata normal form. 12/360 useless extension candidates. Maximal degree in co-relation 1071. Up to 369 conditions per place. [2023-11-29 04:11:40,210 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 43 selfloop transitions, 2 changer transitions 4/55 dead transitions. [2023-11-29 04:11:40,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 55 transitions, 281 flow [2023-11-29 04:11:40,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:11:40,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:11:40,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2023-11-29 04:11:40,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5426356589147286 [2023-11-29 04:11:40,212 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 70 transitions. [2023-11-29 04:11:40,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 70 transitions. [2023-11-29 04:11:40,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:11:40,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 70 transitions. [2023-11-29 04:11:40,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:40,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 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 04:11:40,214 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 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 04:11:40,214 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 154 flow. Second operand 3 states and 70 transitions. [2023-11-29 04:11:40,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 55 transitions, 281 flow [2023-11-29 04:11:40,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 55 transitions, 270 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-29 04:11:40,218 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 165 flow [2023-11-29 04:11:40,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2023-11-29 04:11:40,219 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 7 predicate places. [2023-11-29 04:11:40,220 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 165 flow [2023-11-29 04:11:40,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:40,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:11:40,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:11:40,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 04:11:40,220 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-29 04:11:40,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:11:40,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1003832880, now seen corresponding path program 1 times [2023-11-29 04:11:40,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:11:40,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772050079] [2023-11-29 04:11:40,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:11:40,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:11:40,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:11:40,267 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 04:11:40,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:11:40,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772050079] [2023-11-29 04:11:40,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772050079] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:11:40,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:11:40,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 04:11:40,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378236953] [2023-11-29 04:11:40,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:11:40,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:11:40,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:11:40,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:11:40,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:11:40,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2023-11-29 04:11:40,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:40,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:11:40,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2023-11-29 04:11:40,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:11:40,383 INFO L124 PetriNetUnfolderBase]: 276/517 cut-off events. [2023-11-29 04:11:40,383 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-11-29 04:11:40,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1195 conditions, 517 events. 276/517 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2572 event pairs, 93 based on Foata normal form. 10/365 useless extension candidates. Maximal degree in co-relation 1160. Up to 369 conditions per place. [2023-11-29 04:11:40,387 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 42 selfloop transitions, 2 changer transitions 4/54 dead transitions. [2023-11-29 04:11:40,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 54 transitions, 286 flow [2023-11-29 04:11:40,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:11:40,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:11:40,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2023-11-29 04:11:40,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49612403100775193 [2023-11-29 04:11:40,389 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 64 transitions. [2023-11-29 04:11:40,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 64 transitions. [2023-11-29 04:11:40,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:11:40,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 64 transitions. [2023-11-29 04:11:40,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:40,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 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 04:11:40,391 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 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 04:11:40,391 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 165 flow. Second operand 3 states and 64 transitions. [2023-11-29 04:11:40,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 54 transitions, 286 flow [2023-11-29 04:11:40,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 54 transitions, 284 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:11:40,394 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 171 flow [2023-11-29 04:11:40,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2023-11-29 04:11:40,395 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2023-11-29 04:11:40,395 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 171 flow [2023-11-29 04:11:40,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:40,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:11:40,396 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 04:11:40,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 04:11:40,396 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-29 04:11:40,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:11:40,397 INFO L85 PathProgramCache]: Analyzing trace with hash -671254791, now seen corresponding path program 1 times [2023-11-29 04:11:40,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:11:40,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312208058] [2023-11-29 04:11:40,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:11:40,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:11:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:11:40,448 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 04:11:40,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:11:40,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312208058] [2023-11-29 04:11:40,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312208058] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:11:40,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071542370] [2023-11-29 04:11:40,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:11:40,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:11:40,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:11:40,453 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:11:40,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:11:40,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:11:40,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:11:40,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:11:40,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:11:40,614 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:11:40,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071542370] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:11:40,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:11:40,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-11-29 04:11:40,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153373589] [2023-11-29 04:11:40,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:11:40,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:11:40,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:11:40,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:11:40,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:11:40,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2023-11-29 04:11:40,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 171 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:40,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:11:40,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2023-11-29 04:11:40,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:11:40,757 INFO L124 PetriNetUnfolderBase]: 334/589 cut-off events. [2023-11-29 04:11:40,758 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2023-11-29 04:11:40,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1395 conditions, 589 events. 334/589 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2708 event pairs, 123 based on Foata normal form. 0/417 useless extension candidates. Maximal degree in co-relation 1359. Up to 316 conditions per place. [2023-11-29 04:11:40,763 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 45 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2023-11-29 04:11:40,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 58 transitions, 316 flow [2023-11-29 04:11:40,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:11:40,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:11:40,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2023-11-29 04:11:40,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45930232558139533 [2023-11-29 04:11:40,764 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 79 transitions. [2023-11-29 04:11:40,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 79 transitions. [2023-11-29 04:11:40,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:11:40,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 79 transitions. [2023-11-29 04:11:40,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:40,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:40,766 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:40,766 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 171 flow. Second operand 4 states and 79 transitions. [2023-11-29 04:11:40,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 58 transitions, 316 flow [2023-11-29 04:11:40,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 58 transitions, 312 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:11:40,770 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 216 flow [2023-11-29 04:11:40,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=216, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2023-11-29 04:11:40,771 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2023-11-29 04:11:40,771 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 216 flow [2023-11-29 04:11:40,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:40,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:11:40,772 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 04:11:40,777 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 04:11:40,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:11:40,976 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-29 04:11:40,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:11:40,977 INFO L85 PathProgramCache]: Analyzing trace with hash -671254784, now seen corresponding path program 1 times [2023-11-29 04:11:40,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:11:40,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572437761] [2023-11-29 04:11:40,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:11:40,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:11:40,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:11:41,033 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 04:11:41,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:11:41,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572437761] [2023-11-29 04:11:41,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572437761] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:11:41,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890709720] [2023-11-29 04:11:41,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:11:41,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:11:41,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:11:41,035 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:11:41,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:11:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:11:41,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:11:41,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:11:41,155 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 04:11:41,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:11:41,180 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 04:11:41,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890709720] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:11:41,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:11:41,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-29 04:11:41,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779202184] [2023-11-29 04:11:41,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:11:41,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:11:41,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:11:41,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:11:41,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:11:41,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2023-11-29 04:11:41,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 216 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:41,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:11:41,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2023-11-29 04:11:41,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:11:41,457 INFO L124 PetriNetUnfolderBase]: 842/1501 cut-off events. [2023-11-29 04:11:41,458 INFO L125 PetriNetUnfolderBase]: For 859/859 co-relation queries the response was YES. [2023-11-29 04:11:41,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3819 conditions, 1501 events. 842/1501 cut-off events. For 859/859 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 8065 event pairs, 197 based on Foata normal form. 24/1227 useless extension candidates. Maximal degree in co-relation 3781. Up to 455 conditions per place. [2023-11-29 04:11:41,466 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 88 selfloop transitions, 9 changer transitions 4/107 dead transitions. [2023-11-29 04:11:41,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 107 transitions, 624 flow [2023-11-29 04:11:41,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:11:41,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 04:11:41,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2023-11-29 04:11:41,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5581395348837209 [2023-11-29 04:11:41,468 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 144 transitions. [2023-11-29 04:11:41,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 144 transitions. [2023-11-29 04:11:41,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:11:41,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 144 transitions. [2023-11-29 04:11:41,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:41,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:41,470 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:41,470 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 216 flow. Second operand 6 states and 144 transitions. [2023-11-29 04:11:41,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 107 transitions, 624 flow [2023-11-29 04:11:41,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 107 transitions, 595 flow, removed 14 selfloop flow, removed 1 redundant places. [2023-11-29 04:11:41,475 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 311 flow [2023-11-29 04:11:41,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=311, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2023-11-29 04:11:41,476 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2023-11-29 04:11:41,476 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 311 flow [2023-11-29 04:11:41,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:41,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:11:41,477 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 04:11:41,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 04:11:41,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 04:11:41,677 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-29 04:11:41,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:11:41,678 INFO L85 PathProgramCache]: Analyzing trace with hash -671254790, now seen corresponding path program 1 times [2023-11-29 04:11:41,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:11:41,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743674312] [2023-11-29 04:11:41,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:11:41,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:11:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:11:41,722 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 04:11:41,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:11:41,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743674312] [2023-11-29 04:11:41,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743674312] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:11:41,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044320288] [2023-11-29 04:11:41,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:11:41,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:11:41,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:11:41,724 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:11:41,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 04:11:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:11:41,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:11:41,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:11:41,867 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 04:11:41,867 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:11:41,891 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 04:11:41,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044320288] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:11:41,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:11:41,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-29 04:11:41,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117666247] [2023-11-29 04:11:41,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:11:41,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:11:41,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:11:41,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:11:41,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:11:41,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2023-11-29 04:11:41,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 311 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:41,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:11:41,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2023-11-29 04:11:41,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:11:42,433 INFO L124 PetriNetUnfolderBase]: 1320/2455 cut-off events. [2023-11-29 04:11:42,433 INFO L125 PetriNetUnfolderBase]: For 3459/3459 co-relation queries the response was YES. [2023-11-29 04:11:42,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6546 conditions, 2455 events. 1320/2455 cut-off events. For 3459/3459 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 15428 event pairs, 247 based on Foata normal form. 214/2281 useless extension candidates. Maximal degree in co-relation 6504. Up to 1022 conditions per place. [2023-11-29 04:11:42,451 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 86 selfloop transitions, 18 changer transitions 24/134 dead transitions. [2023-11-29 04:11:42,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 134 transitions, 899 flow [2023-11-29 04:11:42,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 04:11:42,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 04:11:42,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2023-11-29 04:11:42,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5203488372093024 [2023-11-29 04:11:42,453 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 179 transitions. [2023-11-29 04:11:42,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 179 transitions. [2023-11-29 04:11:42,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:11:42,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 179 transitions. [2023-11-29 04:11:42,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 22.375) internal successors, (179), 8 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:42,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 43.0) internal successors, (387), 9 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:42,456 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 43.0) internal successors, (387), 9 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:42,456 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 311 flow. Second operand 8 states and 179 transitions. [2023-11-29 04:11:42,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 134 transitions, 899 flow [2023-11-29 04:11:42,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 134 transitions, 899 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 04:11:42,465 INFO L231 Difference]: Finished difference. Result has 72 places, 68 transitions, 578 flow [2023-11-29 04:11:42,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=578, PETRI_PLACES=72, PETRI_TRANSITIONS=68} [2023-11-29 04:11:42,466 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 31 predicate places. [2023-11-29 04:11:42,466 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 68 transitions, 578 flow [2023-11-29 04:11:42,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:42,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:11:42,466 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-29 04:11:42,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 04:11:42,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:11:42,668 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-29 04:11:42,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:11:42,669 INFO L85 PathProgramCache]: Analyzing trace with hash 422124167, now seen corresponding path program 2 times [2023-11-29 04:11:42,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:11:42,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789329802] [2023-11-29 04:11:42,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:11:42,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:11:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:11:42,848 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 04:11:42,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:11:42,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789329802] [2023-11-29 04:11:42,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789329802] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:11:42,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940259164] [2023-11-29 04:11:42,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:11:42,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:11:42,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:11:42,850 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:11:42,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 04:11:42,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:11:42,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:11:42,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:11:42,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:11:42,991 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 04:11:42,991 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:11:43,027 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 04:11:43,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940259164] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:11:43,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:11:43,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2023-11-29 04:11:43,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401701671] [2023-11-29 04:11:43,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:11:43,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 04:11:43,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:11:43,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 04:11:43,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-29 04:11:43,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 43 [2023-11-29 04:11:43,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 68 transitions, 578 flow. Second operand has 14 states, 14 states have (on average 8.142857142857142) internal successors, (114), 14 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:43,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:11:43,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 43 [2023-11-29 04:11:43,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:11:43,594 INFO L124 PetriNetUnfolderBase]: 1321/2460 cut-off events. [2023-11-29 04:11:43,595 INFO L125 PetriNetUnfolderBase]: For 6684/6684 co-relation queries the response was YES. [2023-11-29 04:11:43,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7601 conditions, 2460 events. 1321/2460 cut-off events. For 6684/6684 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 15732 event pairs, 1091 based on Foata normal form. 2/2072 useless extension candidates. Maximal degree in co-relation 7546. Up to 2262 conditions per place. [2023-11-29 04:11:43,613 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 46 selfloop transitions, 19 changer transitions 0/70 dead transitions. [2023-11-29 04:11:43,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 70 transitions, 714 flow [2023-11-29 04:11:43,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 04:11:43,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 04:11:43,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 137 transitions. [2023-11-29 04:11:43,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.22757475083056478 [2023-11-29 04:11:43,615 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 137 transitions. [2023-11-29 04:11:43,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 137 transitions. [2023-11-29 04:11:43,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:11:43,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 137 transitions. [2023-11-29 04:11:43,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:43,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 43.0) internal successors, (645), 15 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:43,618 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 43.0) internal successors, (645), 15 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:43,618 INFO L175 Difference]: Start difference. First operand has 72 places, 68 transitions, 578 flow. Second operand 14 states and 137 transitions. [2023-11-29 04:11:43,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 70 transitions, 714 flow [2023-11-29 04:11:43,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 70 transitions, 692 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-11-29 04:11:43,633 INFO L231 Difference]: Finished difference. Result has 79 places, 70 transitions, 600 flow [2023-11-29 04:11:43,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=600, PETRI_PLACES=79, PETRI_TRANSITIONS=70} [2023-11-29 04:11:43,634 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 38 predicate places. [2023-11-29 04:11:43,634 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 70 transitions, 600 flow [2023-11-29 04:11:43,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.142857142857142) internal successors, (114), 14 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:43,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:11:43,635 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1] [2023-11-29 04:11:43,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 04:11:43,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:11:43,836 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-29 04:11:43,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:11:43,837 INFO L85 PathProgramCache]: Analyzing trace with hash -537715274, now seen corresponding path program 2 times [2023-11-29 04:11:43,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:11:43,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957592558] [2023-11-29 04:11:43,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:11:43,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:11:43,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:11:43,937 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 04:11:43,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:11:43,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957592558] [2023-11-29 04:11:43,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957592558] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:11:43,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216320969] [2023-11-29 04:11:43,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:11:43,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:11:43,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:11:43,939 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:11:43,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 04:11:44,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:11:44,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:11:44,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 04:11:44,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:11:44,109 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 04:11:44,110 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:11:44,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216320969] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:11:44,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:11:44,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-29 04:11:44,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758092313] [2023-11-29 04:11:44,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:11:44,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:11:44,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:11:44,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:11:44,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:11:44,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2023-11-29 04:11:44,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 600 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:44,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:11:44,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2023-11-29 04:11:44,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:11:44,381 INFO L124 PetriNetUnfolderBase]: 1182/2247 cut-off events. [2023-11-29 04:11:44,382 INFO L125 PetriNetUnfolderBase]: For 6362/6362 co-relation queries the response was YES. [2023-11-29 04:11:44,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6432 conditions, 2247 events. 1182/2247 cut-off events. For 6362/6362 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14494 event pairs, 1012 based on Foata normal form. 108/1975 useless extension candidates. Maximal degree in co-relation 6323. Up to 2063 conditions per place. [2023-11-29 04:11:44,392 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 58 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2023-11-29 04:11:44,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 64 transitions, 634 flow [2023-11-29 04:11:44,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:11:44,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:11:44,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2023-11-29 04:11:44,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3798449612403101 [2023-11-29 04:11:44,394 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 49 transitions. [2023-11-29 04:11:44,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 49 transitions. [2023-11-29 04:11:44,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:11:44,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 49 transitions. [2023-11-29 04:11:44,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:44,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 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 04:11:44,395 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 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 04:11:44,395 INFO L175 Difference]: Start difference. First operand has 79 places, 70 transitions, 600 flow. Second operand 3 states and 49 transitions. [2023-11-29 04:11:44,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 64 transitions, 634 flow [2023-11-29 04:11:44,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 64 transitions, 547 flow, removed 11 selfloop flow, removed 13 redundant places. [2023-11-29 04:11:44,403 INFO L231 Difference]: Finished difference. Result has 66 places, 64 transitions, 431 flow [2023-11-29 04:11:44,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=431, PETRI_PLACES=66, PETRI_TRANSITIONS=64} [2023-11-29 04:11:44,404 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 25 predicate places. [2023-11-29 04:11:44,405 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 64 transitions, 431 flow [2023-11-29 04:11:44,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:44,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:11:44,405 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:11:44,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 04:11:44,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:11:44,607 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-29 04:11:44,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:11:44,607 INFO L85 PathProgramCache]: Analyzing trace with hash -906250060, now seen corresponding path program 1 times [2023-11-29 04:11:44,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:11:44,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016004853] [2023-11-29 04:11:44,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:11:44,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:11:44,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:11:44,804 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 04:11:44,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:11:44,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016004853] [2023-11-29 04:11:44,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016004853] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:11:44,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:11:44,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:11:44,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084756040] [2023-11-29 04:11:44,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:11:44,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:11:44,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:11:44,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:11:44,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:11:44,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2023-11-29 04:11:44,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 64 transitions, 431 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:44,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:11:44,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2023-11-29 04:11:44,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:11:45,175 INFO L124 PetriNetUnfolderBase]: 1226/2348 cut-off events. [2023-11-29 04:11:45,175 INFO L125 PetriNetUnfolderBase]: For 4734/4734 co-relation queries the response was YES. [2023-11-29 04:11:45,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6546 conditions, 2348 events. 1226/2348 cut-off events. For 4734/4734 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 15116 event pairs, 1057 based on Foata normal form. 10/1953 useless extension candidates. Maximal degree in co-relation 6522. Up to 2061 conditions per place. [2023-11-29 04:11:45,190 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 56 selfloop transitions, 2 changer transitions 13/76 dead transitions. [2023-11-29 04:11:45,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 76 transitions, 601 flow [2023-11-29 04:11:45,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:11:45,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 04:11:45,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2023-11-29 04:11:45,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4186046511627907 [2023-11-29 04:11:45,191 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 72 transitions. [2023-11-29 04:11:45,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 72 transitions. [2023-11-29 04:11:45,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:11:45,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 72 transitions. [2023-11-29 04:11:45,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:45,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:45,193 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:45,193 INFO L175 Difference]: Start difference. First operand has 66 places, 64 transitions, 431 flow. Second operand 4 states and 72 transitions. [2023-11-29 04:11:45,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 76 transitions, 601 flow [2023-11-29 04:11:45,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 76 transitions, 600 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:11:45,208 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 434 flow [2023-11-29 04:11:45,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=434, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2023-11-29 04:11:45,209 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 28 predicate places. [2023-11-29 04:11:45,209 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 434 flow [2023-11-29 04:11:45,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:45,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:11:45,210 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:11:45,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 04:11:45,210 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-29 04:11:45,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:11:45,210 INFO L85 PathProgramCache]: Analyzing trace with hash -650511242, now seen corresponding path program 1 times [2023-11-29 04:11:45,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:11:45,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675350580] [2023-11-29 04:11:45,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:11:45,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:11:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:11:45,334 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:11:45,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:11:45,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675350580] [2023-11-29 04:11:45,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675350580] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:11:45,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921981452] [2023-11-29 04:11:45,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:11:45,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:11:45,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:11:45,336 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:11:45,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 04:11:45,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:11:45,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 04:11:45,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:11:45,576 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:11:45,577 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:11:45,648 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:11:45,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921981452] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:11:45,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:11:45,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 13 [2023-11-29 04:11:45,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619244500] [2023-11-29 04:11:45,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:11:45,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 04:11:45,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:11:45,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 04:11:45,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=109, Unknown=0, NotChecked=0, Total=210 [2023-11-29 04:11:45,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2023-11-29 04:11:45,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 434 flow. Second operand has 15 states, 15 states have (on average 12.4) internal successors, (186), 15 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:45,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:11:45,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2023-11-29 04:11:45,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:11:46,594 INFO L124 PetriNetUnfolderBase]: 3403/6428 cut-off events. [2023-11-29 04:11:46,594 INFO L125 PetriNetUnfolderBase]: For 16141/16141 co-relation queries the response was YES. [2023-11-29 04:11:46,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17264 conditions, 6428 events. 3403/6428 cut-off events. For 16141/16141 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 43378 event pairs, 879 based on Foata normal form. 336/5658 useless extension candidates. Maximal degree in co-relation 17238. Up to 1124 conditions per place. [2023-11-29 04:11:46,636 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 140 selfloop transitions, 51 changer transitions 54/250 dead transitions. [2023-11-29 04:11:46,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 250 transitions, 1877 flow [2023-11-29 04:11:46,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 04:11:46,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 04:11:46,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 302 transitions. [2023-11-29 04:11:46,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5016611295681063 [2023-11-29 04:11:46,639 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 302 transitions. [2023-11-29 04:11:46,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 302 transitions. [2023-11-29 04:11:46,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:11:46,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 302 transitions. [2023-11-29 04:11:46,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 21.571428571428573) internal successors, (302), 14 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:46,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 43.0) internal successors, (645), 15 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:46,643 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 43.0) internal successors, (645), 15 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:46,643 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 434 flow. Second operand 14 states and 302 transitions. [2023-11-29 04:11:46,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 250 transitions, 1877 flow [2023-11-29 04:11:46,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 250 transitions, 1871 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-29 04:11:46,666 INFO L231 Difference]: Finished difference. Result has 85 places, 102 transitions, 1070 flow [2023-11-29 04:11:46,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1070, PETRI_PLACES=85, PETRI_TRANSITIONS=102} [2023-11-29 04:11:46,666 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 44 predicate places. [2023-11-29 04:11:46,667 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 102 transitions, 1070 flow [2023-11-29 04:11:46,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 12.4) internal successors, (186), 15 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:46,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:11:46,667 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:11:46,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 04:11:46,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:11:46,872 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-29 04:11:46,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:11:46,873 INFO L85 PathProgramCache]: Analyzing trace with hash 905471604, now seen corresponding path program 2 times [2023-11-29 04:11:46,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:11:46,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939370866] [2023-11-29 04:11:46,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:11:46,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:11:46,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:11:47,125 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:11:47,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:11:47,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939370866] [2023-11-29 04:11:47,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939370866] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:11:47,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106048878] [2023-11-29 04:11:47,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:11:47,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:11:47,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:11:47,127 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:11:47,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 04:11:47,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:11:47,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:11:47,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 04:11:47,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:11:47,483 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:11:47,483 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:11:47,726 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:11:47,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106048878] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:11:47,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:11:47,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 28 [2023-11-29 04:11:47,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680304380] [2023-11-29 04:11:47,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:11:47,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 04:11:47,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:11:47,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 04:11:47,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=400, Invalid=470, Unknown=0, NotChecked=0, Total=870 [2023-11-29 04:11:47,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2023-11-29 04:11:47,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 102 transitions, 1070 flow. Second operand has 30 states, 30 states have (on average 11.7) internal successors, (351), 30 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:47,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:11:47,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2023-11-29 04:11:47,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:11:50,636 INFO L124 PetriNetUnfolderBase]: 9095/17190 cut-off events. [2023-11-29 04:11:50,636 INFO L125 PetriNetUnfolderBase]: For 88558/88558 co-relation queries the response was YES. [2023-11-29 04:11:50,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48037 conditions, 17190 events. 9095/17190 cut-off events. For 88558/88558 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 121907 event pairs, 1895 based on Foata normal form. 778/15006 useless extension candidates. Maximal degree in co-relation 48005. Up to 2609 conditions per place. [2023-11-29 04:11:50,709 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 326 selfloop transitions, 163 changer transitions 168/662 dead transitions. [2023-11-29 04:11:50,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 662 transitions, 5428 flow [2023-11-29 04:11:50,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-29 04:11:50,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-11-29 04:11:50,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 854 transitions. [2023-11-29 04:11:50,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965116279069767 [2023-11-29 04:11:50,713 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 854 transitions. [2023-11-29 04:11:50,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 854 transitions. [2023-11-29 04:11:50,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:11:50,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 854 transitions. [2023-11-29 04:11:50,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 21.35) internal successors, (854), 40 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:50,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 43.0) internal successors, (1763), 41 states have internal predecessors, (1763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:50,719 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 43.0) internal successors, (1763), 41 states have internal predecessors, (1763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:50,719 INFO L175 Difference]: Start difference. First operand has 85 places, 102 transitions, 1070 flow. Second operand 40 states and 854 transitions. [2023-11-29 04:11:50,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 662 transitions, 5428 flow [2023-11-29 04:11:50,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 662 transitions, 5398 flow, removed 11 selfloop flow, removed 3 redundant places. [2023-11-29 04:11:50,861 INFO L231 Difference]: Finished difference. Result has 147 places, 214 transitions, 3070 flow [2023-11-29 04:11:50,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=3070, PETRI_PLACES=147, PETRI_TRANSITIONS=214} [2023-11-29 04:11:50,863 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 106 predicate places. [2023-11-29 04:11:50,863 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 214 transitions, 3070 flow [2023-11-29 04:11:50,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 11.7) internal successors, (351), 30 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:50,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:11:50,863 INFO L208 CegarLoopForPetriNet]: trace histogram [19, 19, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:11:50,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 04:11:51,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 04:11:51,068 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-29 04:11:51,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:11:51,069 INFO L85 PathProgramCache]: Analyzing trace with hash 502532148, now seen corresponding path program 3 times [2023-11-29 04:11:51,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:11:51,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372288794] [2023-11-29 04:11:51,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:11:51,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:11:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:11:51,898 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 0 proven. 513 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:11:51,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:11:51,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372288794] [2023-11-29 04:11:51,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372288794] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:11:51,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153431972] [2023-11-29 04:11:51,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:11:51,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:11:51,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:11:51,900 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:11:51,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 04:11:52,024 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 04:11:52,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:11:52,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:11:52,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:11:52,150 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2023-11-29 04:11:52,150 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:11:52,281 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2023-11-29 04:11:52,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153431972] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:11:52,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:11:52,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 2, 2] total 21 [2023-11-29 04:11:52,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069768792] [2023-11-29 04:11:52,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:11:52,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 04:11:52,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:11:52,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 04:11:52,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2023-11-29 04:11:52,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2023-11-29 04:11:52,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 214 transitions, 3070 flow. Second operand has 23 states, 23 states have (on average 11.652173913043478) internal successors, (268), 23 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:52,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:11:52,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2023-11-29 04:11:52,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:11:56,142 INFO L124 PetriNetUnfolderBase]: 9486/17977 cut-off events. [2023-11-29 04:11:56,142 INFO L125 PetriNetUnfolderBase]: For 118796/118796 co-relation queries the response was YES. [2023-11-29 04:11:56,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56986 conditions, 17977 events. 9486/17977 cut-off events. For 118796/118796 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 128278 event pairs, 2477 based on Foata normal form. 152/15019 useless extension candidates. Maximal degree in co-relation 56927. Up to 2720 conditions per place. [2023-11-29 04:11:56,262 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 0 selfloop transitions, 0 changer transitions 503/503 dead transitions. [2023-11-29 04:11:56,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 503 transitions, 5895 flow [2023-11-29 04:11:56,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 04:11:56,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-29 04:11:56,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 466 transitions. [2023-11-29 04:11:56,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.492600422832981 [2023-11-29 04:11:56,265 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 466 transitions. [2023-11-29 04:11:56,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 466 transitions. [2023-11-29 04:11:56,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:11:56,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 466 transitions. [2023-11-29 04:11:56,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 21.181818181818183) internal successors, (466), 22 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:56,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 43.0) internal successors, (989), 23 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:56,272 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 43.0) internal successors, (989), 23 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:56,272 INFO L175 Difference]: Start difference. First operand has 147 places, 214 transitions, 3070 flow. Second operand 22 states and 466 transitions. [2023-11-29 04:11:56,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 503 transitions, 5895 flow [2023-11-29 04:11:56,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 503 transitions, 5074 flow, removed 177 selfloop flow, removed 30 redundant places. [2023-11-29 04:11:56,938 INFO L231 Difference]: Finished difference. Result has 136 places, 0 transitions, 0 flow [2023-11-29 04:11:56,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2154, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=0, PETRI_PLACES=136, PETRI_TRANSITIONS=0} [2023-11-29 04:11:56,939 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 95 predicate places. [2023-11-29 04:11:56,939 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 0 transitions, 0 flow [2023-11-29 04:11:56,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.652173913043478) internal successors, (268), 23 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:11:56,942 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 28 remaining) [2023-11-29 04:11:56,942 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 28 remaining) [2023-11-29 04:11:56,942 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 28 remaining) [2023-11-29 04:11:56,942 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 28 remaining) [2023-11-29 04:11:56,942 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 28 remaining) [2023-11-29 04:11:56,943 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 28 remaining) [2023-11-29 04:11:56,943 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 28 remaining) [2023-11-29 04:11:56,943 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 28 remaining) [2023-11-29 04:11:56,943 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 28 remaining) [2023-11-29 04:11:56,943 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 28 remaining) [2023-11-29 04:11:56,943 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 28 remaining) [2023-11-29 04:11:56,943 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 28 remaining) [2023-11-29 04:11:56,943 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 28 remaining) [2023-11-29 04:11:56,944 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 28 remaining) [2023-11-29 04:11:56,944 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 28 remaining) [2023-11-29 04:11:56,944 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 28 remaining) [2023-11-29 04:11:56,944 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 28 remaining) [2023-11-29 04:11:56,944 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 28 remaining) [2023-11-29 04:11:56,944 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 28 remaining) [2023-11-29 04:11:56,944 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 28 remaining) [2023-11-29 04:11:56,945 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 28 remaining) [2023-11-29 04:11:56,945 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 28 remaining) [2023-11-29 04:11:56,945 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 28 remaining) [2023-11-29 04:11:56,945 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 28 remaining) [2023-11-29 04:11:56,945 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 28 remaining) [2023-11-29 04:11:56,945 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 28 remaining) [2023-11-29 04:11:56,945 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 28 remaining) [2023-11-29 04:11:56,945 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 28 remaining) [2023-11-29 04:11:56,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 04:11:57,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 04:11:57,146 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:11:57,151 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 04:11:57,151 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 04:11:57,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 04:11:57 BasicIcfg [2023-11-29 04:11:57,155 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 04:11:57,155 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 04:11:57,155 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 04:11:57,155 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 04:11:57,156 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:11:37" (3/4) ... [2023-11-29 04:11:57,157 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 04:11:57,159 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-29 04:11:57,159 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-29 04:11:57,164 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 79 nodes and edges [2023-11-29 04:11:57,165 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-11-29 04:11:57,165 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-29 04:11:57,165 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-29 04:11:57,245 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 04:11:57,246 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 04:11:57,246 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 04:11:57,247 INFO L158 Benchmark]: Toolchain (without parser) took 20657.58ms. Allocated memory was 151.0MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 117.9MB in the beginning and 860.5MB in the end (delta: -742.6MB). Peak memory consumption was 518.4MB. Max. memory is 16.1GB. [2023-11-29 04:11:57,248 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 113.2MB. Free memory is still 86.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:11:57,248 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.30ms. Allocated memory is still 151.0MB. Free memory was 117.3MB in the beginning and 106.2MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 04:11:57,248 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.51ms. Allocated memory is still 151.0MB. Free memory was 106.2MB in the beginning and 104.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 04:11:57,249 INFO L158 Benchmark]: Boogie Preprocessor took 80.84ms. Allocated memory is still 151.0MB. Free memory was 104.1MB in the beginning and 101.8MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 04:11:57,249 INFO L158 Benchmark]: RCFGBuilder took 770.69ms. Allocated memory is still 151.0MB. Free memory was 101.1MB in the beginning and 72.7MB in the end (delta: 28.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-29 04:11:57,250 INFO L158 Benchmark]: TraceAbstraction took 19390.61ms. Allocated memory was 151.0MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 72.3MB in the beginning and 864.7MB in the end (delta: -792.4MB). Peak memory consumption was 543.5MB. Max. memory is 16.1GB. [2023-11-29 04:11:57,250 INFO L158 Benchmark]: Witness Printer took 91.34ms. Allocated memory is still 1.4GB. Free memory was 864.7MB in the beginning and 860.5MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 04:11:57,253 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 113.2MB. Free memory is still 86.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 273.30ms. Allocated memory is still 151.0MB. Free memory was 117.3MB in the beginning and 106.2MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.51ms. Allocated memory is still 151.0MB. Free memory was 106.2MB in the beginning and 104.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 80.84ms. Allocated memory is still 151.0MB. Free memory was 104.1MB in the beginning and 101.8MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 770.69ms. Allocated memory is still 151.0MB. Free memory was 101.1MB in the beginning and 72.7MB in the end (delta: 28.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 19390.61ms. Allocated memory was 151.0MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 72.3MB in the beginning and 864.7MB in the end (delta: -792.4MB). Peak memory consumption was 543.5MB. Max. memory is 16.1GB. * Witness Printer took 91.34ms. Allocated memory is still 1.4GB. Free memory was 864.7MB in the beginning and 860.5MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 52]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 52]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 65 locations, 28 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 19.2s, OverallIterations: 14, TraceHistogramMax: 19, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 12.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2306 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2296 mSDsluCounter, 30 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 28 mSDsCounter, 176 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1745 IncrementalHoareTripleChecker+Invalid, 1921 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 176 mSolverCounterUnsat, 2 mSDtfsCounter, 1745 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 498 GetRequests, 327 SyntacticMatches, 2 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 891 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3070occurred in iteration=13, InterpolantAutomatonStates: 141, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 465 NumberOfCodeBlocks, 385 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 612 ConstructedInterpolants, 0 QuantifiedInterpolants, 2861 SizeOfPredicates, 12 NumberOfNonLiveVariables, 1297 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 31 InterpolantComputations, 7 PerfectInterpolantSequences, 1024/2131 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 04:11:57,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36b0bf62-9f9f-4a07-82af-c49d2ff6955f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE