./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 eecffe8522a4364afb75ce7fb01800caae42a8a3ed11b56f212b94255e6f04bc --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:41:29,346 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:41:29,417 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:41:29,424 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:41:29,424 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:41:29,484 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:41:29,486 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:41:29,487 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:41:29,489 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:41:29,494 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:41:29,495 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:41:29,495 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:41:29,496 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:41:29,498 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:41:29,498 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:41:29,499 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:41:29,499 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:41:29,500 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:41:29,504 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:41:29,505 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:41:29,505 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:41:29,506 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:41:29,508 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:41:29,508 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:41:29,509 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:41:29,509 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:41:29,509 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:41:29,510 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:41:29,511 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:41:29,511 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:41:29,513 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:41:29,513 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:41:29,513 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:41:29,513 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:41:29,514 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:41:29,514 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:41:29,514 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:41:29,514 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:41:29,515 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:41:29,515 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:41:29,532 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:41:29,536 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_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eecffe8522a4364afb75ce7fb01800caae42a8a3ed11b56f212b94255e6f04bc [2023-11-06 22:41:29,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:41:29,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:41:29,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:41:29,952 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:41:29,953 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:41:29,954 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2023-11-06 22:41:32,998 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:41:33,316 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:41:33,317 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2023-11-06 22:41:33,329 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/data/c4b00983c/026338dc9869489ea99c6582e63a4cbc/FLAG24aef9b50 [2023-11-06 22:41:33,349 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/data/c4b00983c/026338dc9869489ea99c6582e63a4cbc [2023-11-06 22:41:33,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:41:33,360 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:41:33,364 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:41:33,364 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:41:33,370 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:41:33,371 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:41:33" (1/1) ... [2023-11-06 22:41:33,372 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@791b5bfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33, skipping insertion in model container [2023-11-06 22:41:33,372 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:41:33" (1/1) ... [2023-11-06 22:41:33,403 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:41:33,691 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:41:33,707 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:41:33,757 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:41:33,771 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:41:33,772 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:41:33,780 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:41:33,780 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33 WrapperNode [2023-11-06 22:41:33,781 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:41:33,782 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:41:33,784 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:41:33,784 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:41:33,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33" (1/1) ... [2023-11-06 22:41:33,801 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33" (1/1) ... [2023-11-06 22:41:33,828 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 10, statements flattened = 131 [2023-11-06 22:41:33,828 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:41:33,829 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:41:33,829 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:41:33,829 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:41:33,839 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33" (1/1) ... [2023-11-06 22:41:33,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33" (1/1) ... [2023-11-06 22:41:33,844 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33" (1/1) ... [2023-11-06 22:41:33,846 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33" (1/1) ... [2023-11-06 22:41:33,855 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33" (1/1) ... [2023-11-06 22:41:33,879 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33" (1/1) ... [2023-11-06 22:41:33,882 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33" (1/1) ... [2023-11-06 22:41:33,891 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33" (1/1) ... [2023-11-06 22:41:33,895 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:41:33,904 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:41:33,905 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:41:33,905 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:41:33,906 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33" (1/1) ... [2023-11-06 22:41:33,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:41:33,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:33,943 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:41:33,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:41:33,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:41:33,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:41:33,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:41:33,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:41:33,995 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:41:33,995 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:41:33,995 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:41:33,995 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:41:33,995 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:41:33,996 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:41:33,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:41:33,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:41:33,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:41:33,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:41:33,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:41:34,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:41:34,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:41:34,002 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:41:34,198 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:41:34,209 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:41:34,637 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:41:34,667 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:41:34,668 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-06 22:41:34,671 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:41:34 BoogieIcfgContainer [2023-11-06 22:41:34,671 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:41:34,674 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:41:34,675 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:41:34,678 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:41:34,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:41:33" (1/3) ... [2023-11-06 22:41:34,679 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d368581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:41:34, skipping insertion in model container [2023-11-06 22:41:34,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:33" (2/3) ... [2023-11-06 22:41:34,680 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d368581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:41:34, skipping insertion in model container [2023-11-06 22:41:34,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:41:34" (3/3) ... [2023-11-06 22:41:34,682 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2023-11-06 22:41:34,691 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:41:34,702 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:41:34,702 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-06 22:41:34,703 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:41:34,800 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:41:34,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 212 transitions, 445 flow [2023-11-06 22:41:34,944 INFO L124 PetriNetUnfolderBase]: 16/209 cut-off events. [2023-11-06 22:41:34,944 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:41:34,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 209 events. 16/209 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 200 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 161. Up to 2 conditions per place. [2023-11-06 22:41:34,951 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 212 transitions, 445 flow [2023-11-06 22:41:34,965 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 185 transitions, 385 flow [2023-11-06 22:41:34,969 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:41:34,988 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 180 places, 185 transitions, 385 flow [2023-11-06 22:41:34,991 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 180 places, 185 transitions, 385 flow [2023-11-06 22:41:34,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 185 transitions, 385 flow [2023-11-06 22:41:35,056 INFO L124 PetriNetUnfolderBase]: 15/185 cut-off events. [2023-11-06 22:41:35,057 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:41:35,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 185 events. 15/185 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 199 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 161. Up to 2 conditions per place. [2023-11-06 22:41:35,062 INFO L119 LiptonReduction]: Number of co-enabled transitions 2950 [2023-11-06 22:41:42,586 INFO L134 LiptonReduction]: Checked pairs total: 4852 [2023-11-06 22:41:42,587 INFO L136 LiptonReduction]: Total number of compositions: 192 [2023-11-06 22:41:42,604 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:41:42,611 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=LoopsAndPotentialCycles, 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;@289b680c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:41:42,611 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-06 22:41:42,614 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:41:42,614 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 22:41:42,614 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:41:42,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:42,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:41:42,616 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:41:42,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:42,621 INFO L85 PathProgramCache]: Analyzing trace with hash 24897, now seen corresponding path program 1 times [2023-11-06 22:41:42,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:42,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503956688] [2023-11-06 22:41:42,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:42,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:42,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:42,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:42,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503956688] [2023-11-06 22:41:42,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503956688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:42,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:42,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:41:42,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133737250] [2023-11-06 22:41:42,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:42,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:42,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:43,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:43,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:43,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 404 [2023-11-06 22:41:43,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:43,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:43,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 404 [2023-11-06 22:41:43,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:43,463 INFO L124 PetriNetUnfolderBase]: 1637/2160 cut-off events. [2023-11-06 22:41:43,464 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2023-11-06 22:41:43,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4418 conditions, 2160 events. 1637/2160 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 8620 event pairs, 883 based on Foata normal form. 0/921 useless extension candidates. Maximal degree in co-relation 3753. Up to 2137 conditions per place. [2023-11-06 22:41:43,489 INFO L140 encePairwiseOnDemand]: 395/404 looper letters, 33 selfloop transitions, 5 changer transitions 0/41 dead transitions. [2023-11-06 22:41:43,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 173 flow [2023-11-06 22:41:43,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:43,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:41:43,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2023-11-06 22:41:43,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4876237623762376 [2023-11-06 22:41:43,510 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2023-11-06 22:41:43,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2023-11-06 22:41:43,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:43,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2023-11-06 22:41:43,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:43,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:43,530 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:43,533 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 89 flow. Second operand 3 states and 591 transitions. [2023-11-06 22:41:43,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 173 flow [2023-11-06 22:41:43,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 41 transitions, 164 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 22:41:43,542 INFO L231 Difference]: Finished difference. Result has 40 places, 41 transitions, 124 flow [2023-11-06 22:41:43,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=40, PETRI_TRANSITIONS=41} [2023-11-06 22:41:43,548 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -1 predicate places. [2023-11-06 22:41:43,548 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 41 transitions, 124 flow [2023-11-06 22:41:43,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:43,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:43,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:41:43,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:41:43,550 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:41:43,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:43,551 INFO L85 PathProgramCache]: Analyzing trace with hash 773113, now seen corresponding path program 1 times [2023-11-06 22:41:43,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:43,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786334764] [2023-11-06 22:41:43,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:43,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:43,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:43,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:43,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786334764] [2023-11-06 22:41:43,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786334764] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:41:43,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478002868] [2023-11-06 22:41:43,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:43,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:43,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:43,683 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:41:43,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:41:43,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:43,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:41:43,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:43,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:43,841 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:41:43,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:43,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478002868] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:41:43,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:41:43,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-06 22:41:43,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641891799] [2023-11-06 22:41:43,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:41:43,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:41:43,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:43,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:41:43,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:41:43,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 404 [2023-11-06 22:41:43,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 41 transitions, 124 flow. Second operand has 7 states, 7 states have (on average 184.14285714285714) internal successors, (1289), 7 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:43,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:43,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 404 [2023-11-06 22:41:43,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:44,343 INFO L124 PetriNetUnfolderBase]: 1649/2178 cut-off events. [2023-11-06 22:41:44,343 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2023-11-06 22:41:44,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4444 conditions, 2178 events. 1649/2178 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 8648 event pairs, 883 based on Foata normal form. 0/932 useless extension candidates. Maximal degree in co-relation 4339. Up to 2138 conditions per place. [2023-11-06 22:41:44,366 INFO L140 encePairwiseOnDemand]: 395/404 looper letters, 31 selfloop transitions, 25 changer transitions 0/59 dead transitions. [2023-11-06 22:41:44,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 59 transitions, 314 flow [2023-11-06 22:41:44,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:41:44,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:41:44,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1343 transitions. [2023-11-06 22:41:44,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4748939179632249 [2023-11-06 22:41:44,374 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1343 transitions. [2023-11-06 22:41:44,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1343 transitions. [2023-11-06 22:41:44,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:44,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1343 transitions. [2023-11-06 22:41:44,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 191.85714285714286) internal successors, (1343), 7 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:44,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 404.0) internal successors, (3232), 8 states have internal predecessors, (3232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:44,391 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 404.0) internal successors, (3232), 8 states have internal predecessors, (3232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:44,391 INFO L175 Difference]: Start difference. First operand has 40 places, 41 transitions, 124 flow. Second operand 7 states and 1343 transitions. [2023-11-06 22:41:44,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 59 transitions, 314 flow [2023-11-06 22:41:44,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 59 transitions, 298 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:41:44,395 INFO L231 Difference]: Finished difference. Result has 47 places, 59 transitions, 278 flow [2023-11-06 22:41:44,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=278, PETRI_PLACES=47, PETRI_TRANSITIONS=59} [2023-11-06 22:41:44,397 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2023-11-06 22:41:44,397 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 59 transitions, 278 flow [2023-11-06 22:41:44,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 184.14285714285714) internal successors, (1289), 7 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:44,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:44,399 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-11-06 22:41:44,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 22:41:44,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:44,605 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:41:44,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:44,606 INFO L85 PathProgramCache]: Analyzing trace with hash 23967811, now seen corresponding path program 1 times [2023-11-06 22:41:44,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:44,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350945831] [2023-11-06 22:41:44,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:44,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:44,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:44,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:44,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:44,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350945831] [2023-11-06 22:41:44,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350945831] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:41:44,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563920677] [2023-11-06 22:41:44,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:44,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:44,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:44,785 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:41:44,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:41:44,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:44,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:41:44,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:44,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:44,887 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:41:44,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563920677] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:44,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:41:44,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-06 22:41:44,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77210961] [2023-11-06 22:41:44,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:44,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:41:44,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:44,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:41:44,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:41:44,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 404 [2023-11-06 22:41:44,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 59 transitions, 278 flow. Second operand has 5 states, 5 states have (on average 183.8) internal successors, (919), 5 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:44,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:44,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 404 [2023-11-06 22:41:44,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:45,278 INFO L124 PetriNetUnfolderBase]: 1643/2170 cut-off events. [2023-11-06 22:41:45,279 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-06 22:41:45,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4453 conditions, 2170 events. 1643/2170 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 8606 event pairs, 883 based on Foata normal form. 0/935 useless extension candidates. Maximal degree in co-relation 4388. Up to 2132 conditions per place. [2023-11-06 22:41:45,303 INFO L140 encePairwiseOnDemand]: 397/404 looper letters, 34 selfloop transitions, 14 changer transitions 0/51 dead transitions. [2023-11-06 22:41:45,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 51 transitions, 320 flow [2023-11-06 22:41:45,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:41:45,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:41:45,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 959 transitions. [2023-11-06 22:41:45,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47475247524752473 [2023-11-06 22:41:45,308 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 959 transitions. [2023-11-06 22:41:45,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 959 transitions. [2023-11-06 22:41:45,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:45,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 959 transitions. [2023-11-06 22:41:45,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 191.8) internal successors, (959), 5 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:45,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 404.0) internal successors, (2424), 6 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:45,321 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 404.0) internal successors, (2424), 6 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:45,322 INFO L175 Difference]: Start difference. First operand has 47 places, 59 transitions, 278 flow. Second operand 5 states and 959 transitions. [2023-11-06 22:41:45,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 51 transitions, 320 flow [2023-11-06 22:41:45,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 51 transitions, 294 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-06 22:41:45,329 INFO L231 Difference]: Finished difference. Result has 47 places, 51 transitions, 226 flow [2023-11-06 22:41:45,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=226, PETRI_PLACES=47, PETRI_TRANSITIONS=51} [2023-11-06 22:41:45,332 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2023-11-06 22:41:45,332 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 51 transitions, 226 flow [2023-11-06 22:41:45,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 183.8) internal successors, (919), 5 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:45,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:45,334 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 22:41:45,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:41:45,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:45,541 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:41:45,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:45,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1558269761, now seen corresponding path program 2 times [2023-11-06 22:41:45,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:45,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255672241] [2023-11-06 22:41:45,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:45,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:45,693 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:45,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:45,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255672241] [2023-11-06 22:41:45,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255672241] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:41:45,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89954080] [2023-11-06 22:41:45,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:41:45,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:45,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:45,697 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:41:45,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:41:45,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:41:45,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:41:45,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:41:45,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:45,835 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:41:45,835 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:41:45,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89954080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:45,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:41:45,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-06 22:41:45,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426479382] [2023-11-06 22:41:45,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:45,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:45,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:45,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:45,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:41:45,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 404 [2023-11-06 22:41:45,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 51 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:45,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:45,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 404 [2023-11-06 22:41:45,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:46,184 INFO L124 PetriNetUnfolderBase]: 1643/2169 cut-off events. [2023-11-06 22:41:46,184 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-11-06 22:41:46,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4448 conditions, 2169 events. 1643/2169 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 8647 event pairs, 883 based on Foata normal form. 1/939 useless extension candidates. Maximal degree in co-relation 4391. Up to 2143 conditions per place. [2023-11-06 22:41:46,204 INFO L140 encePairwiseOnDemand]: 401/404 looper letters, 41 selfloop transitions, 6 changer transitions 0/50 dead transitions. [2023-11-06 22:41:46,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 50 transitions, 310 flow [2023-11-06 22:41:46,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:46,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:41:46,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 593 transitions. [2023-11-06 22:41:46,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4892739273927393 [2023-11-06 22:41:46,208 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 593 transitions. [2023-11-06 22:41:46,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 593 transitions. [2023-11-06 22:41:46,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:46,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 593 transitions. [2023-11-06 22:41:46,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:46,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:46,216 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:46,216 INFO L175 Difference]: Start difference. First operand has 47 places, 51 transitions, 226 flow. Second operand 3 states and 593 transitions. [2023-11-06 22:41:46,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 50 transitions, 310 flow [2023-11-06 22:41:46,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 50 transitions, 290 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:41:46,220 INFO L231 Difference]: Finished difference. Result has 45 places, 50 transitions, 208 flow [2023-11-06 22:41:46,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=45, PETRI_TRANSITIONS=50} [2023-11-06 22:41:46,221 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2023-11-06 22:41:46,221 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 50 transitions, 208 flow [2023-11-06 22:41:46,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:46,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:46,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:41:46,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:41:46,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:46,429 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:41:46,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:46,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1572031668, now seen corresponding path program 1 times [2023-11-06 22:41:46,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:46,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635208849] [2023-11-06 22:41:46,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:46,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:46,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:46,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:46,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:46,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635208849] [2023-11-06 22:41:46,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635208849] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:46,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:46,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:41:46,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487094411] [2023-11-06 22:41:46,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:46,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:46,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:46,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:46,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:46,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 404 [2023-11-06 22:41:46,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 50 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:46,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:46,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 404 [2023-11-06 22:41:46,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:46,825 INFO L124 PetriNetUnfolderBase]: 1747/2359 cut-off events. [2023-11-06 22:41:46,826 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2023-11-06 22:41:46,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4838 conditions, 2359 events. 1747/2359 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 9871 event pairs, 886 based on Foata normal form. 0/1155 useless extension candidates. Maximal degree in co-relation 4783. Up to 2004 conditions per place. [2023-11-06 22:41:46,843 INFO L140 encePairwiseOnDemand]: 399/404 looper letters, 63 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2023-11-06 22:41:46,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 68 transitions, 379 flow [2023-11-06 22:41:46,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:46,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:41:46,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 622 transitions. [2023-11-06 22:41:46,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132013201320133 [2023-11-06 22:41:46,846 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 622 transitions. [2023-11-06 22:41:46,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 622 transitions. [2023-11-06 22:41:46,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:46,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 622 transitions. [2023-11-06 22:41:46,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:46,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:46,853 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:46,853 INFO L175 Difference]: Start difference. First operand has 45 places, 50 transitions, 208 flow. Second operand 3 states and 622 transitions. [2023-11-06 22:41:46,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 68 transitions, 379 flow [2023-11-06 22:41:46,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 68 transitions, 367 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:41:46,856 INFO L231 Difference]: Finished difference. Result has 46 places, 52 transitions, 217 flow [2023-11-06 22:41:46,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=217, PETRI_PLACES=46, PETRI_TRANSITIONS=52} [2023-11-06 22:41:46,858 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2023-11-06 22:41:46,858 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 52 transitions, 217 flow [2023-11-06 22:41:46,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:46,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:46,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:46,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:41:46,859 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:41:46,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:46,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1488342215, now seen corresponding path program 1 times [2023-11-06 22:41:46,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:46,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221226705] [2023-11-06 22:41:46,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:46,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:46,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:46,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:46,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:46,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221226705] [2023-11-06 22:41:46,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221226705] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:41:46,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763335303] [2023-11-06 22:41:46,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:46,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:46,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:46,942 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:41:46,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:41:47,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:47,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:41:47,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:47,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:47,078 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:41:47,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763335303] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:47,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:41:47,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-11-06 22:41:47,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133800961] [2023-11-06 22:41:47,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:47,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:41:47,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:47,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:41:47,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:41:47,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 404 [2023-11-06 22:41:47,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 52 transitions, 217 flow. Second operand has 5 states, 5 states have (on average 176.4) internal successors, (882), 5 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:47,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:47,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 404 [2023-11-06 22:41:47,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:47,741 INFO L124 PetriNetUnfolderBase]: 2584/3545 cut-off events. [2023-11-06 22:41:47,741 INFO L125 PetriNetUnfolderBase]: For 708/708 co-relation queries the response was YES. [2023-11-06 22:41:47,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8250 conditions, 3545 events. 2584/3545 cut-off events. For 708/708 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 16143 event pairs, 1436 based on Foata normal form. 0/1871 useless extension candidates. Maximal degree in co-relation 8170. Up to 2307 conditions per place. [2023-11-06 22:41:47,778 INFO L140 encePairwiseOnDemand]: 396/404 looper letters, 87 selfloop transitions, 13 changer transitions 0/102 dead transitions. [2023-11-06 22:41:47,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 102 transitions, 579 flow [2023-11-06 22:41:47,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:41:47,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:41:47,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1131 transitions. [2023-11-06 22:41:47,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4665841584158416 [2023-11-06 22:41:47,785 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1131 transitions. [2023-11-06 22:41:47,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1131 transitions. [2023-11-06 22:41:47,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:47,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1131 transitions. [2023-11-06 22:41:47,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 188.5) internal successors, (1131), 6 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:47,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 404.0) internal successors, (2828), 7 states have internal predecessors, (2828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:47,797 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 404.0) internal successors, (2828), 7 states have internal predecessors, (2828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:47,798 INFO L175 Difference]: Start difference. First operand has 46 places, 52 transitions, 217 flow. Second operand 6 states and 1131 transitions. [2023-11-06 22:41:47,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 102 transitions, 579 flow [2023-11-06 22:41:47,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 102 transitions, 572 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:41:47,805 INFO L231 Difference]: Finished difference. Result has 52 places, 56 transitions, 270 flow [2023-11-06 22:41:47,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=270, PETRI_PLACES=52, PETRI_TRANSITIONS=56} [2023-11-06 22:41:47,808 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 11 predicate places. [2023-11-06 22:41:47,808 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 56 transitions, 270 flow [2023-11-06 22:41:47,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 176.4) internal successors, (882), 5 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:47,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:47,809 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-11-06 22:41:47,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:41:48,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 22:41:48,016 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:41:48,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:48,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1486389394, now seen corresponding path program 1 times [2023-11-06 22:41:48,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:48,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000467938] [2023-11-06 22:41:48,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:48,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:48,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:48,153 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:41:48,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:48,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000467938] [2023-11-06 22:41:48,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000467938] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:48,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:48,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:41:48,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620951441] [2023-11-06 22:41:48,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:48,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:41:48,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:48,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:41:48,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:41:48,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 404 [2023-11-06 22:41:48,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 56 transitions, 270 flow. Second operand has 4 states, 4 states have (on average 178.25) internal successors, (713), 4 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:48,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:48,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 404 [2023-11-06 22:41:48,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:48,604 INFO L124 PetriNetUnfolderBase]: 2115/2901 cut-off events. [2023-11-06 22:41:48,604 INFO L125 PetriNetUnfolderBase]: For 1042/1365 co-relation queries the response was YES. [2023-11-06 22:41:48,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6766 conditions, 2901 events. 2115/2901 cut-off events. For 1042/1365 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 13207 event pairs, 1285 based on Foata normal form. 324/1841 useless extension candidates. Maximal degree in co-relation 6708. Up to 2874 conditions per place. [2023-11-06 22:41:48,630 INFO L140 encePairwiseOnDemand]: 399/404 looper letters, 41 selfloop transitions, 10 changer transitions 0/55 dead transitions. [2023-11-06 22:41:48,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 55 transitions, 363 flow [2023-11-06 22:41:48,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:41:48,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:41:48,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 745 transitions. [2023-11-06 22:41:48,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46101485148514854 [2023-11-06 22:41:48,634 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 745 transitions. [2023-11-06 22:41:48,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 745 transitions. [2023-11-06 22:41:48,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:48,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 745 transitions. [2023-11-06 22:41:48,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 186.25) internal successors, (745), 4 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:48,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 404.0) internal successors, (2020), 5 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:48,642 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 404.0) internal successors, (2020), 5 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:48,642 INFO L175 Difference]: Start difference. First operand has 52 places, 56 transitions, 270 flow. Second operand 4 states and 745 transitions. [2023-11-06 22:41:48,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 55 transitions, 363 flow [2023-11-06 22:41:48,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 55 transitions, 345 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-06 22:41:48,646 INFO L231 Difference]: Finished difference. Result has 53 places, 55 transitions, 263 flow [2023-11-06 22:41:48,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=263, PETRI_PLACES=53, PETRI_TRANSITIONS=55} [2023-11-06 22:41:48,647 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 12 predicate places. [2023-11-06 22:41:48,649 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 55 transitions, 263 flow [2023-11-06 22:41:48,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 178.25) internal successors, (713), 4 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:48,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:48,650 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-11-06 22:41:48,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:41:48,651 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:41:48,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:48,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1021638438, now seen corresponding path program 1 times [2023-11-06 22:41:48,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:48,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477256802] [2023-11-06 22:41:48,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:48,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:48,846 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:48,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:48,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477256802] [2023-11-06 22:41:48,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477256802] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:41:48,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803181496] [2023-11-06 22:41:48,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:48,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:48,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:48,849 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:41:48,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:41:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:48,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:41:48,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:49,073 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:41:49,074 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:41:49,144 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:41:49,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803181496] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:41:49,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:41:49,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 14 [2023-11-06 22:41:49,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679658059] [2023-11-06 22:41:49,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:41:49,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:41:49,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:49,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:41:49,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:41:49,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 404 [2023-11-06 22:41:49,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 55 transitions, 263 flow. Second operand has 15 states, 15 states have (on average 176.26666666666668) internal successors, (2644), 15 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:49,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:49,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 404 [2023-11-06 22:41:49,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:50,490 INFO L124 PetriNetUnfolderBase]: 3592/4896 cut-off events. [2023-11-06 22:41:50,491 INFO L125 PetriNetUnfolderBase]: For 1467/1871 co-relation queries the response was YES. [2023-11-06 22:41:50,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11390 conditions, 4896 events. 3592/4896 cut-off events. For 1467/1871 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 23495 event pairs, 2171 based on Foata normal form. 405/2947 useless extension candidates. Maximal degree in co-relation 11332. Up to 2861 conditions per place. [2023-11-06 22:41:50,530 INFO L140 encePairwiseOnDemand]: 398/404 looper letters, 64 selfloop transitions, 17 changer transitions 0/85 dead transitions. [2023-11-06 22:41:50,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 85 transitions, 521 flow [2023-11-06 22:41:50,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:41:50,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:41:50,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1644 transitions. [2023-11-06 22:41:50,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4521452145214521 [2023-11-06 22:41:50,537 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1644 transitions. [2023-11-06 22:41:50,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1644 transitions. [2023-11-06 22:41:50,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:50,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1644 transitions. [2023-11-06 22:41:50,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 182.66666666666666) internal successors, (1644), 9 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:50,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 404.0) internal successors, (4040), 10 states have internal predecessors, (4040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:50,553 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 404.0) internal successors, (4040), 10 states have internal predecessors, (4040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:50,553 INFO L175 Difference]: Start difference. First operand has 53 places, 55 transitions, 263 flow. Second operand 9 states and 1644 transitions. [2023-11-06 22:41:50,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 85 transitions, 521 flow [2023-11-06 22:41:50,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 85 transitions, 497 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:41:50,559 INFO L231 Difference]: Finished difference. Result has 58 places, 58 transitions, 295 flow [2023-11-06 22:41:50,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=295, PETRI_PLACES=58, PETRI_TRANSITIONS=58} [2023-11-06 22:41:50,563 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 17 predicate places. [2023-11-06 22:41:50,563 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 58 transitions, 295 flow [2023-11-06 22:41:50,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 176.26666666666668) internal successors, (2644), 15 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:50,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:50,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:50,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:41:50,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-06 22:41:50,782 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:41:50,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:50,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1604066774, now seen corresponding path program 1 times [2023-11-06 22:41:50,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:50,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508071927] [2023-11-06 22:41:50,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:50,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:50,881 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:41:50,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:50,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508071927] [2023-11-06 22:41:50,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508071927] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:41:50,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849703422] [2023-11-06 22:41:50,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:50,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:50,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:50,884 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:41:50,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:41:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:50,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:41:50,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:51,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:41:51,069 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:41:51,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:41:51,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849703422] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:41:51,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:41:51,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-11-06 22:41:51,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628512012] [2023-11-06 22:41:51,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:41:51,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:41:51,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:51,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:41:51,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:41:51,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 404 [2023-11-06 22:41:51,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 58 transitions, 295 flow. Second operand has 13 states, 13 states have (on average 171.84615384615384) internal successors, (2234), 13 states have internal predecessors, (2234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:51,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:51,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 404 [2023-11-06 22:41:51,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:52,555 INFO L124 PetriNetUnfolderBase]: 4640/6283 cut-off events. [2023-11-06 22:41:52,556 INFO L125 PetriNetUnfolderBase]: For 1979/1979 co-relation queries the response was YES. [2023-11-06 22:41:52,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14841 conditions, 6283 events. 4640/6283 cut-off events. For 1979/1979 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 30018 event pairs, 1462 based on Foata normal form. 0/3467 useless extension candidates. Maximal degree in co-relation 14782. Up to 2502 conditions per place. [2023-11-06 22:41:52,602 INFO L140 encePairwiseOnDemand]: 393/404 looper letters, 119 selfloop transitions, 29 changer transitions 0/150 dead transitions. [2023-11-06 22:41:52,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 150 transitions, 811 flow [2023-11-06 22:41:52,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:41:52,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:41:52,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2181 transitions. [2023-11-06 22:41:52,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4498762376237624 [2023-11-06 22:41:52,614 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2181 transitions. [2023-11-06 22:41:52,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2181 transitions. [2023-11-06 22:41:52,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:52,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2181 transitions. [2023-11-06 22:41:52,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 181.75) internal successors, (2181), 12 states have internal predecessors, (2181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:52,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 404.0) internal successors, (5252), 13 states have internal predecessors, (5252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:52,635 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 404.0) internal successors, (5252), 13 states have internal predecessors, (5252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:52,636 INFO L175 Difference]: Start difference. First operand has 58 places, 58 transitions, 295 flow. Second operand 12 states and 2181 transitions. [2023-11-06 22:41:52,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 150 transitions, 811 flow [2023-11-06 22:41:52,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 150 transitions, 778 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-06 22:41:52,646 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 382 flow [2023-11-06 22:41:52,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=382, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2023-11-06 22:41:52,648 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 27 predicate places. [2023-11-06 22:41:52,650 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 382 flow [2023-11-06 22:41:52,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 171.84615384615384) internal successors, (2234), 13 states have internal predecessors, (2234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:52,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:52,652 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-11-06 22:41:52,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:41:52,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-06 22:41:52,868 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:41:52,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:52,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1461089902, now seen corresponding path program 2 times [2023-11-06 22:41:52,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:52,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533870299] [2023-11-06 22:41:52,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:52,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:52,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:52,992 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:41:52,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:52,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533870299] [2023-11-06 22:41:52,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533870299] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:41:52,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760058890] [2023-11-06 22:41:52,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:41:52,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:52,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:52,995 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:41:53,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:41:53,106 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:41:53,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:41:53,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:41:53,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:53,144 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-06 22:41:53,145 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:41:53,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760058890] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:53,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:41:53,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2023-11-06 22:41:53,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963782049] [2023-11-06 22:41:53,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:53,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:41:53,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:53,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:41:53,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:41:53,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 404 [2023-11-06 22:41:53,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 382 flow. Second operand has 4 states, 4 states have (on average 186.25) internal successors, (745), 4 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:53,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:53,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 404 [2023-11-06 22:41:53,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:53,852 INFO L124 PetriNetUnfolderBase]: 3590/4891 cut-off events. [2023-11-06 22:41:53,852 INFO L125 PetriNetUnfolderBase]: For 4812/5612 co-relation queries the response was YES. [2023-11-06 22:41:53,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12810 conditions, 4891 events. 3590/4891 cut-off events. For 4812/5612 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 23362 event pairs, 2145 based on Foata normal form. 801/3798 useless extension candidates. Maximal degree in co-relation 12754. Up to 4839 conditions per place. [2023-11-06 22:41:53,888 INFO L140 encePairwiseOnDemand]: 400/404 looper letters, 49 selfloop transitions, 9 changer transitions 0/63 dead transitions. [2023-11-06 22:41:53,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 63 transitions, 477 flow [2023-11-06 22:41:53,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:41:53,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:41:53,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 771 transitions. [2023-11-06 22:41:53,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4771039603960396 [2023-11-06 22:41:53,896 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 771 transitions. [2023-11-06 22:41:53,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 771 transitions. [2023-11-06 22:41:53,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:53,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 771 transitions. [2023-11-06 22:41:53,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 192.75) internal successors, (771), 4 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:53,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 404.0) internal successors, (2020), 5 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:53,914 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 404.0) internal successors, (2020), 5 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:53,923 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 382 flow. Second operand 4 states and 771 transitions. [2023-11-06 22:41:53,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 63 transitions, 477 flow [2023-11-06 22:41:53,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 63 transitions, 405 flow, removed 7 selfloop flow, removed 9 redundant places. [2023-11-06 22:41:53,935 INFO L231 Difference]: Finished difference. Result has 58 places, 63 transitions, 307 flow [2023-11-06 22:41:53,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=307, PETRI_PLACES=58, PETRI_TRANSITIONS=63} [2023-11-06 22:41:53,937 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 17 predicate places. [2023-11-06 22:41:53,937 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 63 transitions, 307 flow [2023-11-06 22:41:53,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 186.25) internal successors, (745), 4 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:53,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:53,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:53,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:41:54,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 22:41:54,145 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:41:54,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:54,145 INFO L85 PathProgramCache]: Analyzing trace with hash 274047793, now seen corresponding path program 1 times [2023-11-06 22:41:54,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:54,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428951172] [2023-11-06 22:41:54,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:54,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:54,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:54,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:54,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:54,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428951172] [2023-11-06 22:41:54,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428951172] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:54,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:54,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:41:54,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950624752] [2023-11-06 22:41:54,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:54,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:54,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:54,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:54,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:54,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 404 [2023-11-06 22:41:54,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 63 transitions, 307 flow. Second operand has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:54,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:54,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 404 [2023-11-06 22:41:54,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:54,910 INFO L124 PetriNetUnfolderBase]: 4779/6484 cut-off events. [2023-11-06 22:41:54,910 INFO L125 PetriNetUnfolderBase]: For 4681/5771 co-relation queries the response was YES. [2023-11-06 22:41:54,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16667 conditions, 6484 events. 4779/6484 cut-off events. For 4681/5771 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 31869 event pairs, 2184 based on Foata normal form. 1090/5304 useless extension candidates. Maximal degree in co-relation 13293. Up to 4914 conditions per place. [2023-11-06 22:41:54,956 INFO L140 encePairwiseOnDemand]: 399/404 looper letters, 82 selfloop transitions, 3 changer transitions 0/89 dead transitions. [2023-11-06 22:41:54,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 89 transitions, 589 flow [2023-11-06 22:41:54,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:54,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:41:54,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 619 transitions. [2023-11-06 22:41:54,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5107260726072608 [2023-11-06 22:41:54,960 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 619 transitions. [2023-11-06 22:41:54,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 619 transitions. [2023-11-06 22:41:54,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:54,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 619 transitions. [2023-11-06 22:41:54,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:54,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:54,967 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:54,967 INFO L175 Difference]: Start difference. First operand has 58 places, 63 transitions, 307 flow. Second operand 3 states and 619 transitions. [2023-11-06 22:41:54,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 89 transitions, 589 flow [2023-11-06 22:41:54,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 89 transitions, 579 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:41:54,975 INFO L231 Difference]: Finished difference. Result has 59 places, 65 transitions, 318 flow [2023-11-06 22:41:54,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=318, PETRI_PLACES=59, PETRI_TRANSITIONS=65} [2023-11-06 22:41:54,976 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2023-11-06 22:41:54,976 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 65 transitions, 318 flow [2023-11-06 22:41:54,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:54,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:54,977 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:54,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:41:54,977 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:41:54,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:54,978 INFO L85 PathProgramCache]: Analyzing trace with hash -2069250897, now seen corresponding path program 1 times [2023-11-06 22:41:54,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:54,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535672748] [2023-11-06 22:41:54,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:54,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:55,096 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:41:55,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:55,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535672748] [2023-11-06 22:41:55,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535672748] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:41:55,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636895455] [2023-11-06 22:41:55,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:55,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:55,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:55,099 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:41:55,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:41:55,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:55,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:41:55,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:55,248 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:41:55,248 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:41:55,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636895455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:55,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:41:55,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-11-06 22:41:55,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235965180] [2023-11-06 22:41:55,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:55,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:41:55,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:55,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:41:55,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:41:55,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 404 [2023-11-06 22:41:55,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 65 transitions, 318 flow. Second operand has 5 states, 5 states have (on average 192.0) internal successors, (960), 5 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:55,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:55,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 404 [2023-11-06 22:41:55,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:56,116 INFO L124 PetriNetUnfolderBase]: 4739/6443 cut-off events. [2023-11-06 22:41:56,117 INFO L125 PetriNetUnfolderBase]: For 4439/4654 co-relation queries the response was YES. [2023-11-06 22:41:56,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18124 conditions, 6443 events. 4739/6443 cut-off events. For 4439/4654 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 30936 event pairs, 1039 based on Foata normal form. 415/4934 useless extension candidates. Maximal degree in co-relation 16094. Up to 3956 conditions per place. [2023-11-06 22:41:56,163 INFO L140 encePairwiseOnDemand]: 400/404 looper letters, 103 selfloop transitions, 12 changer transitions 0/117 dead transitions. [2023-11-06 22:41:56,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 117 transitions, 691 flow [2023-11-06 22:41:56,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:41:56,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:41:56,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1033 transitions. [2023-11-06 22:41:56,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5113861386138614 [2023-11-06 22:41:56,169 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1033 transitions. [2023-11-06 22:41:56,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1033 transitions. [2023-11-06 22:41:56,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:56,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1033 transitions. [2023-11-06 22:41:56,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 206.6) internal successors, (1033), 5 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:56,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 404.0) internal successors, (2424), 6 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:56,178 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 404.0) internal successors, (2424), 6 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:56,178 INFO L175 Difference]: Start difference. First operand has 59 places, 65 transitions, 318 flow. Second operand 5 states and 1033 transitions. [2023-11-06 22:41:56,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 117 transitions, 691 flow [2023-11-06 22:41:56,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 117 transitions, 668 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-06 22:41:56,197 INFO L231 Difference]: Finished difference. Result has 60 places, 63 transitions, 309 flow [2023-11-06 22:41:56,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=309, PETRI_PLACES=60, PETRI_TRANSITIONS=63} [2023-11-06 22:41:56,198 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 19 predicate places. [2023-11-06 22:41:56,199 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 63 transitions, 309 flow [2023-11-06 22:41:56,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 192.0) internal successors, (960), 5 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:56,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:56,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:56,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:41:56,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:56,406 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:41:56,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:56,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1540413598, now seen corresponding path program 1 times [2023-11-06 22:41:56,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:56,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323646861] [2023-11-06 22:41:56,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:56,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:56,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:56,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:56,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:56,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323646861] [2023-11-06 22:41:56,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323646861] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:56,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:56,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:41:56,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39294206] [2023-11-06 22:41:56,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:56,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:56,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:56,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:56,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:56,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 404 [2023-11-06 22:41:56,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 63 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:56,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:56,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 404 [2023-11-06 22:41:56,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:57,137 INFO L124 PetriNetUnfolderBase]: 5222/7245 cut-off events. [2023-11-06 22:41:57,137 INFO L125 PetriNetUnfolderBase]: For 7743/8699 co-relation queries the response was YES. [2023-11-06 22:41:57,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20743 conditions, 7245 events. 5222/7245 cut-off events. For 7743/8699 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 37145 event pairs, 2431 based on Foata normal form. 956/6409 useless extension candidates. Maximal degree in co-relation 17679. Up to 4925 conditions per place. [2023-11-06 22:41:57,183 INFO L140 encePairwiseOnDemand]: 400/404 looper letters, 83 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2023-11-06 22:41:57,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 89 transitions, 601 flow [2023-11-06 22:41:57,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:57,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:41:57,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 620 transitions. [2023-11-06 22:41:57,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5115511551155115 [2023-11-06 22:41:57,194 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 620 transitions. [2023-11-06 22:41:57,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 620 transitions. [2023-11-06 22:41:57,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:57,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 620 transitions. [2023-11-06 22:41:57,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:57,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:57,208 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:57,208 INFO L175 Difference]: Start difference. First operand has 60 places, 63 transitions, 309 flow. Second operand 3 states and 620 transitions. [2023-11-06 22:41:57,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 89 transitions, 601 flow [2023-11-06 22:41:57,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 89 transitions, 559 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-06 22:41:57,217 INFO L231 Difference]: Finished difference. Result has 60 places, 64 transitions, 299 flow [2023-11-06 22:41:57,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=299, PETRI_PLACES=60, PETRI_TRANSITIONS=64} [2023-11-06 22:41:57,219 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 19 predicate places. [2023-11-06 22:41:57,219 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 64 transitions, 299 flow [2023-11-06 22:41:57,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:57,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:57,220 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:57,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:41:57,220 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:41:57,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:57,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1366954377, now seen corresponding path program 1 times [2023-11-06 22:41:57,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:57,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549577385] [2023-11-06 22:41:57,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:57,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:57,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:57,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:57,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549577385] [2023-11-06 22:41:57,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549577385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:57,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:57,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:41:57,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737006219] [2023-11-06 22:41:57,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:57,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:57,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:57,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:57,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:57,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 404 [2023-11-06 22:41:57,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 64 transitions, 299 flow. Second operand has 3 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:57,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:57,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 404 [2023-11-06 22:41:57,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:57,961 INFO L124 PetriNetUnfolderBase]: 5558/7573 cut-off events. [2023-11-06 22:41:57,962 INFO L125 PetriNetUnfolderBase]: For 4436/5126 co-relation queries the response was YES. [2023-11-06 22:41:57,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21095 conditions, 7573 events. 5558/7573 cut-off events. For 4436/5126 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 38950 event pairs, 897 based on Foata normal form. 690/6367 useless extension candidates. Maximal degree in co-relation 18221. Up to 5354 conditions per place. [2023-11-06 22:41:58,017 INFO L140 encePairwiseOnDemand]: 401/404 looper letters, 78 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2023-11-06 22:41:58,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 85 transitions, 551 flow [2023-11-06 22:41:58,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:58,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:41:58,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 612 transitions. [2023-11-06 22:41:58,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.504950495049505 [2023-11-06 22:41:58,021 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 612 transitions. [2023-11-06 22:41:58,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 612 transitions. [2023-11-06 22:41:58,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:58,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 612 transitions. [2023-11-06 22:41:58,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:58,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:58,027 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 404.0) internal successors, (1616), 4 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:58,027 INFO L175 Difference]: Start difference. First operand has 60 places, 64 transitions, 299 flow. Second operand 3 states and 612 transitions. [2023-11-06 22:41:58,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 85 transitions, 551 flow [2023-11-06 22:41:58,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 85 transitions, 548 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:41:58,036 INFO L231 Difference]: Finished difference. Result has 60 places, 63 transitions, 299 flow [2023-11-06 22:41:58,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=299, PETRI_PLACES=60, PETRI_TRANSITIONS=63} [2023-11-06 22:41:58,037 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 19 predicate places. [2023-11-06 22:41:58,037 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 63 transitions, 299 flow [2023-11-06 22:41:58,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:58,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:58,038 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:58,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:41:58,038 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:41:58,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:58,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1366954376, now seen corresponding path program 1 times [2023-11-06 22:41:58,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:58,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086726531] [2023-11-06 22:41:58,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:58,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:58,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:41:58,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:58,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086726531] [2023-11-06 22:41:58,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086726531] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:58,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:58,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:41:58,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628843225] [2023-11-06 22:41:58,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:58,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:41:58,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:58,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:41:58,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:41:58,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 404 [2023-11-06 22:41:58,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 63 transitions, 299 flow. Second operand has 5 states, 5 states have (on average 177.2) internal successors, (886), 5 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:58,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:58,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 404 [2023-11-06 22:41:58,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:41:59,006 INFO L124 PetriNetUnfolderBase]: 4878/6661 cut-off events. [2023-11-06 22:41:59,006 INFO L125 PetriNetUnfolderBase]: For 5598/6049 co-relation queries the response was YES. [2023-11-06 22:41:59,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19141 conditions, 6661 events. 4878/6661 cut-off events. For 5598/6049 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 31320 event pairs, 2987 based on Foata normal form. 509/5542 useless extension candidates. Maximal degree in co-relation 16228. Up to 6073 conditions per place. [2023-11-06 22:41:59,049 INFO L140 encePairwiseOnDemand]: 396/404 looper letters, 75 selfloop transitions, 14 changer transitions 2/95 dead transitions. [2023-11-06 22:41:59,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 95 transitions, 585 flow [2023-11-06 22:41:59,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:41:59,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:41:59,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1115 transitions. [2023-11-06 22:41:59,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.459983498349835 [2023-11-06 22:41:59,055 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1115 transitions. [2023-11-06 22:41:59,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1115 transitions. [2023-11-06 22:41:59,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:41:59,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1115 transitions. [2023-11-06 22:41:59,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 185.83333333333334) internal successors, (1115), 6 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:59,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 404.0) internal successors, (2828), 7 states have internal predecessors, (2828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:59,066 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 404.0) internal successors, (2828), 7 states have internal predecessors, (2828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:59,066 INFO L175 Difference]: Start difference. First operand has 60 places, 63 transitions, 299 flow. Second operand 6 states and 1115 transitions. [2023-11-06 22:41:59,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 95 transitions, 585 flow [2023-11-06 22:41:59,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 95 transitions, 575 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:41:59,078 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 342 flow [2023-11-06 22:41:59,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=342, PETRI_PLACES=65, PETRI_TRANSITIONS=65} [2023-11-06 22:41:59,079 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 24 predicate places. [2023-11-06 22:41:59,079 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 342 flow [2023-11-06 22:41:59,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 177.2) internal successors, (886), 5 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:59,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:41:59,080 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:59,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:41:59,080 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:41:59,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:59,081 INFO L85 PathProgramCache]: Analyzing trace with hash 868760939, now seen corresponding path program 1 times [2023-11-06 22:41:59,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:59,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119401350] [2023-11-06 22:41:59,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:59,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:59,199 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:41:59,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:59,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119401350] [2023-11-06 22:41:59,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119401350] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:41:59,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81450202] [2023-11-06 22:41:59,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:59,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:59,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:59,205 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:41:59,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:41:59,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:59,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:41:59,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:59,406 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:41:59,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:41:59,471 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:41:59,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81450202] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:41:59,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:41:59,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-11-06 22:41:59,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167032329] [2023-11-06 22:41:59,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:41:59,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:41:59,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:59,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:41:59,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:41:59,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 404 [2023-11-06 22:41:59,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 65 transitions, 342 flow. Second operand has 14 states, 14 states have (on average 171.85714285714286) internal successors, (2406), 14 states have internal predecessors, (2406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:59,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:41:59,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 404 [2023-11-06 22:41:59,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:00,554 INFO L124 PetriNetUnfolderBase]: 4366/5993 cut-off events. [2023-11-06 22:42:00,554 INFO L125 PetriNetUnfolderBase]: For 5589/6001 co-relation queries the response was YES. [2023-11-06 22:42:00,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17549 conditions, 5993 events. 4366/5993 cut-off events. For 5589/6001 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 27851 event pairs, 2204 based on Foata normal form. 490/5064 useless extension candidates. Maximal degree in co-relation 15272. Up to 3895 conditions per place. [2023-11-06 22:42:00,582 INFO L140 encePairwiseOnDemand]: 395/404 looper letters, 89 selfloop transitions, 22 changer transitions 3/118 dead transitions. [2023-11-06 22:42:00,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 118 transitions, 757 flow [2023-11-06 22:42:00,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:42:00,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:42:00,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1619 transitions. [2023-11-06 22:42:00,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4452695269526953 [2023-11-06 22:42:00,591 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1619 transitions. [2023-11-06 22:42:00,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1619 transitions. [2023-11-06 22:42:00,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:00,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1619 transitions. [2023-11-06 22:42:00,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 179.88888888888889) internal successors, (1619), 9 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:00,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 404.0) internal successors, (4040), 10 states have internal predecessors, (4040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:00,607 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 404.0) internal successors, (4040), 10 states have internal predecessors, (4040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:00,607 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 342 flow. Second operand 9 states and 1619 transitions. [2023-11-06 22:42:00,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 118 transitions, 757 flow [2023-11-06 22:42:00,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 118 transitions, 736 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:42:00,619 INFO L231 Difference]: Finished difference. Result has 73 places, 69 transitions, 412 flow [2023-11-06 22:42:00,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=412, PETRI_PLACES=73, PETRI_TRANSITIONS=69} [2023-11-06 22:42:00,620 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 32 predicate places. [2023-11-06 22:42:00,620 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 69 transitions, 412 flow [2023-11-06 22:42:00,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 171.85714285714286) internal successors, (2406), 14 states have internal predecessors, (2406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:00,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:42:00,622 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:00,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:00,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:00,827 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:42:00,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:00,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1426192492, now seen corresponding path program 1 times [2023-11-06 22:42:00,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:00,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529136697] [2023-11-06 22:42:00,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:00,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:00,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:42:00,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:00,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529136697] [2023-11-06 22:42:00,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529136697] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:00,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:42:00,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:42:00,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554394007] [2023-11-06 22:42:00,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:00,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:42:00,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:00,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:42:00,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:42:01,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 404 [2023-11-06 22:42:01,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 69 transitions, 412 flow. Second operand has 5 states, 5 states have (on average 178.6) internal successors, (893), 5 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:01,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:01,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 404 [2023-11-06 22:42:01,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:01,615 INFO L124 PetriNetUnfolderBase]: 3274/4553 cut-off events. [2023-11-06 22:42:01,615 INFO L125 PetriNetUnfolderBase]: For 7248/7843 co-relation queries the response was YES. [2023-11-06 22:42:01,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14748 conditions, 4553 events. 3274/4553 cut-off events. For 7248/7843 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 21349 event pairs, 2183 based on Foata normal form. 595/4261 useless extension candidates. Maximal degree in co-relation 12743. Up to 4423 conditions per place. [2023-11-06 22:42:01,637 INFO L140 encePairwiseOnDemand]: 396/404 looper letters, 49 selfloop transitions, 8 changer transitions 27/88 dead transitions. [2023-11-06 22:42:01,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 88 transitions, 641 flow [2023-11-06 22:42:01,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:42:01,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:42:01,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1112 transitions. [2023-11-06 22:42:01,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45874587458745875 [2023-11-06 22:42:01,643 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1112 transitions. [2023-11-06 22:42:01,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1112 transitions. [2023-11-06 22:42:01,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:01,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1112 transitions. [2023-11-06 22:42:01,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 185.33333333333334) internal successors, (1112), 6 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:01,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 404.0) internal successors, (2828), 7 states have internal predecessors, (2828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:01,654 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 404.0) internal successors, (2828), 7 states have internal predecessors, (2828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:01,654 INFO L175 Difference]: Start difference. First operand has 73 places, 69 transitions, 412 flow. Second operand 6 states and 1112 transitions. [2023-11-06 22:42:01,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 88 transitions, 641 flow [2023-11-06 22:42:01,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 88 transitions, 610 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-06 22:42:01,669 INFO L231 Difference]: Finished difference. Result has 75 places, 61 transitions, 318 flow [2023-11-06 22:42:01,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=318, PETRI_PLACES=75, PETRI_TRANSITIONS=61} [2023-11-06 22:42:01,670 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 34 predicate places. [2023-11-06 22:42:01,670 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 61 transitions, 318 flow [2023-11-06 22:42:01,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 178.6) internal successors, (893), 5 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:01,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:42:01,671 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:01,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 22:42:01,672 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:42:01,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:01,672 INFO L85 PathProgramCache]: Analyzing trace with hash 846251705, now seen corresponding path program 1 times [2023-11-06 22:42:01,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:01,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035275756] [2023-11-06 22:42:01,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:01,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:01,739 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:42:01,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:01,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035275756] [2023-11-06 22:42:01,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035275756] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:42:01,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370854093] [2023-11-06 22:42:01,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:01,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:01,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:01,742 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:01,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:42:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:01,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:42:01,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:01,959 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:42:01,960 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:42:02,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:42:02,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370854093] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:42:02,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:42:02,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 13 [2023-11-06 22:42:02,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116571294] [2023-11-06 22:42:02,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:42:02,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:42:02,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:02,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:42:02,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:42:02,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 404 [2023-11-06 22:42:02,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 61 transitions, 318 flow. Second operand has 13 states, 13 states have (on average 173.84615384615384) internal successors, (2260), 13 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:02,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:02,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 404 [2023-11-06 22:42:02,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:03,455 INFO L124 PetriNetUnfolderBase]: 3773/5155 cut-off events. [2023-11-06 22:42:03,455 INFO L125 PetriNetUnfolderBase]: For 7646/8127 co-relation queries the response was YES. [2023-11-06 22:42:03,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16933 conditions, 5155 events. 3773/5155 cut-off events. For 7646/8127 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 23718 event pairs, 790 based on Foata normal form. 515/4916 useless extension candidates. Maximal degree in co-relation 15176. Up to 1589 conditions per place. [2023-11-06 22:42:03,487 INFO L140 encePairwiseOnDemand]: 392/404 looper letters, 113 selfloop transitions, 15 changer transitions 71/201 dead transitions. [2023-11-06 22:42:03,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 201 transitions, 1341 flow [2023-11-06 22:42:03,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:42:03,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-06 22:42:03,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2538 transitions. [2023-11-06 22:42:03,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4487270155586987 [2023-11-06 22:42:03,500 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2538 transitions. [2023-11-06 22:42:03,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2538 transitions. [2023-11-06 22:42:03,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:03,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2538 transitions. [2023-11-06 22:42:03,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 181.28571428571428) internal successors, (2538), 14 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:03,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 404.0) internal successors, (6060), 15 states have internal predecessors, (6060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:03,582 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 404.0) internal successors, (6060), 15 states have internal predecessors, (6060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:03,583 INFO L175 Difference]: Start difference. First operand has 75 places, 61 transitions, 318 flow. Second operand 14 states and 2538 transitions. [2023-11-06 22:42:03,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 201 transitions, 1341 flow [2023-11-06 22:42:03,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 201 transitions, 1247 flow, removed 39 selfloop flow, removed 8 redundant places. [2023-11-06 22:42:03,609 INFO L231 Difference]: Finished difference. Result has 75 places, 53 transitions, 275 flow [2023-11-06 22:42:03,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=275, PETRI_PLACES=75, PETRI_TRANSITIONS=53} [2023-11-06 22:42:03,609 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 34 predicate places. [2023-11-06 22:42:03,610 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 53 transitions, 275 flow [2023-11-06 22:42:03,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 173.84615384615384) internal successors, (2260), 13 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:03,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:42:03,611 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:03,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:03,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 22:42:03,817 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:42:03,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:03,818 INFO L85 PathProgramCache]: Analyzing trace with hash 754532328, now seen corresponding path program 2 times [2023-11-06 22:42:03,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:03,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331981063] [2023-11-06 22:42:03,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:03,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:03,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:03,904 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:42:03,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:03,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331981063] [2023-11-06 22:42:03,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331981063] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:42:03,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68406080] [2023-11-06 22:42:03,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:42:03,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:03,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:03,907 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:03,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:42:04,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:42:04,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:42:04,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:42:04,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:04,072 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:42:04,072 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:42:04,103 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:42:04,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68406080] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:42:04,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:42:04,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 5 [2023-11-06 22:42:04,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335385928] [2023-11-06 22:42:04,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:42:04,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:42:04,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:04,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:42:04,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:42:04,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 404 [2023-11-06 22:42:04,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 53 transitions, 275 flow. Second operand has 6 states, 6 states have (on average 190.33333333333334) internal successors, (1142), 6 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:04,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:04,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 404 [2023-11-06 22:42:04,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:05,030 INFO L124 PetriNetUnfolderBase]: 5281/6953 cut-off events. [2023-11-06 22:42:05,030 INFO L125 PetriNetUnfolderBase]: For 7901/8243 co-relation queries the response was YES. [2023-11-06 22:42:05,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23420 conditions, 6953 events. 5281/6953 cut-off events. For 7901/8243 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 30941 event pairs, 971 based on Foata normal form. 342/6660 useless extension candidates. Maximal degree in co-relation 23335. Up to 2545 conditions per place. [2023-11-06 22:42:05,067 INFO L140 encePairwiseOnDemand]: 398/404 looper letters, 101 selfloop transitions, 9 changer transitions 12/124 dead transitions. [2023-11-06 22:42:05,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 124 transitions, 864 flow [2023-11-06 22:42:05,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:42:05,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:42:05,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1192 transitions. [2023-11-06 22:42:05,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49174917491749176 [2023-11-06 22:42:05,070 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1192 transitions. [2023-11-06 22:42:05,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1192 transitions. [2023-11-06 22:42:05,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:05,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1192 transitions. [2023-11-06 22:42:05,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 198.66666666666666) internal successors, (1192), 6 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:05,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 404.0) internal successors, (2828), 7 states have internal predecessors, (2828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:05,079 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 404.0) internal successors, (2828), 7 states have internal predecessors, (2828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:05,080 INFO L175 Difference]: Start difference. First operand has 75 places, 53 transitions, 275 flow. Second operand 6 states and 1192 transitions. [2023-11-06 22:42:05,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 124 transitions, 864 flow [2023-11-06 22:42:05,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 124 transitions, 794 flow, removed 22 selfloop flow, removed 9 redundant places. [2023-11-06 22:42:05,154 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 264 flow [2023-11-06 22:42:05,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=264, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2023-11-06 22:42:05,155 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 17 predicate places. [2023-11-06 22:42:05,155 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 264 flow [2023-11-06 22:42:05,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 190.33333333333334) internal successors, (1142), 6 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:05,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:42:05,156 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:05,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:05,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:05,361 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:42:05,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:05,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1553261068, now seen corresponding path program 1 times [2023-11-06 22:42:05,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:05,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971876818] [2023-11-06 22:42:05,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:05,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:05,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:05,471 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:42:05,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:05,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971876818] [2023-11-06 22:42:05,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971876818] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:42:05,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707716288] [2023-11-06 22:42:05,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:05,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:05,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:05,477 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:05,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:42:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:05,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:42:05,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:05,649 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:42:05,649 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:42:05,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707716288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:42:05,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:42:05,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-06 22:42:05,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989062927] [2023-11-06 22:42:05,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:42:05,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:42:05,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:05,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:42:05,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:42:05,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 404 [2023-11-06 22:42:05,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 264 flow. Second operand has 4 states, 4 states have (on average 194.75) internal successors, (779), 4 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:05,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:05,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 404 [2023-11-06 22:42:05,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:06,161 INFO L124 PetriNetUnfolderBase]: 3181/4214 cut-off events. [2023-11-06 22:42:06,162 INFO L125 PetriNetUnfolderBase]: For 6738/7113 co-relation queries the response was YES. [2023-11-06 22:42:06,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13468 conditions, 4214 events. 3181/4214 cut-off events. For 6738/7113 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 16868 event pairs, 265 based on Foata normal form. 607/4349 useless extension candidates. Maximal degree in co-relation 13394. Up to 2558 conditions per place. [2023-11-06 22:42:06,179 INFO L140 encePairwiseOnDemand]: 401/404 looper letters, 89 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2023-11-06 22:42:06,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 93 transitions, 626 flow [2023-11-06 22:42:06,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:42:06,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:42:06,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 813 transitions. [2023-11-06 22:42:06,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5030940594059405 [2023-11-06 22:42:06,183 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 813 transitions. [2023-11-06 22:42:06,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 813 transitions. [2023-11-06 22:42:06,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:06,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 813 transitions. [2023-11-06 22:42:06,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 203.25) internal successors, (813), 4 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:06,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 404.0) internal successors, (2020), 5 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:06,189 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 404.0) internal successors, (2020), 5 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:06,189 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 264 flow. Second operand 4 states and 813 transitions. [2023-11-06 22:42:06,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 93 transitions, 626 flow [2023-11-06 22:42:06,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 93 transitions, 563 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-11-06 22:42:06,203 INFO L231 Difference]: Finished difference. Result has 51 places, 51 transitions, 219 flow [2023-11-06 22:42:06,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=219, PETRI_PLACES=51, PETRI_TRANSITIONS=51} [2023-11-06 22:42:06,204 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2023-11-06 22:42:06,204 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 51 transitions, 219 flow [2023-11-06 22:42:06,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 194.75) internal successors, (779), 4 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:06,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:42:06,205 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:06,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:06,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:06,410 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-06 22:42:06,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:06,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1964789612, now seen corresponding path program 2 times [2023-11-06 22:42:06,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:06,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864429163] [2023-11-06 22:42:06,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:06,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:06,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:06,505 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:42:06,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:06,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864429163] [2023-11-06 22:42:06,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864429163] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:42:06,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510686851] [2023-11-06 22:42:06,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:42:06,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:06,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:06,507 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:06,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 22:42:06,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:42:06,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:42:06,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:42:06,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:06,680 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:42:06,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:42:06,718 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:42:06,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510686851] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:42:06,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:42:06,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 2, 2] total 6 [2023-11-06 22:42:06,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555558278] [2023-11-06 22:42:06,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:42:06,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:42:06,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:06,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:42:06,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:42:06,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 404 [2023-11-06 22:42:06,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 51 transitions, 219 flow. Second operand has 7 states, 7 states have (on average 191.57142857142858) internal successors, (1341), 7 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:06,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:42:06,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 404 [2023-11-06 22:42:06,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:42:07,282 INFO L124 PetriNetUnfolderBase]: 4065/5330 cut-off events. [2023-11-06 22:42:07,282 INFO L125 PetriNetUnfolderBase]: For 4919/5239 co-relation queries the response was YES. [2023-11-06 22:42:07,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15343 conditions, 5330 events. 4065/5330 cut-off events. For 4919/5239 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 21181 event pairs, 503 based on Foata normal form. 320/4912 useless extension candidates. Maximal degree in co-relation 15277. Up to 1232 conditions per place. [2023-11-06 22:42:07,293 INFO L140 encePairwiseOnDemand]: 398/404 looper letters, 0 selfloop transitions, 0 changer transitions 139/139 dead transitions. [2023-11-06 22:42:07,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 139 transitions, 833 flow [2023-11-06 22:42:07,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:42:07,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:42:07,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1386 transitions. [2023-11-06 22:42:07,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4900990099009901 [2023-11-06 22:42:07,296 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1386 transitions. [2023-11-06 22:42:07,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1386 transitions. [2023-11-06 22:42:07,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:42:07,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1386 transitions. [2023-11-06 22:42:07,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 198.0) internal successors, (1386), 7 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:07,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 404.0) internal successors, (3232), 8 states have internal predecessors, (3232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:07,303 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 404.0) internal successors, (3232), 8 states have internal predecessors, (3232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:07,303 INFO L175 Difference]: Start difference. First operand has 51 places, 51 transitions, 219 flow. Second operand 7 states and 1386 transitions. [2023-11-06 22:42:07,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 139 transitions, 833 flow [2023-11-06 22:42:07,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 139 transitions, 830 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:42:07,317 INFO L231 Difference]: Finished difference. Result has 54 places, 0 transitions, 0 flow [2023-11-06 22:42:07,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=404, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=54, PETRI_TRANSITIONS=0} [2023-11-06 22:42:07,317 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2023-11-06 22:42:07,318 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 0 transitions, 0 flow [2023-11-06 22:42:07,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 191.57142857142858) internal successors, (1341), 7 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:07,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 19 remaining) [2023-11-06 22:42:07,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-11-06 22:42:07,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-11-06 22:42:07,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-11-06 22:42:07,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-11-06 22:42:07,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-11-06 22:42:07,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-11-06 22:42:07,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-11-06 22:42:07,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2023-11-06 22:42:07,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2023-11-06 22:42:07,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 19 remaining) [2023-11-06 22:42:07,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 19 remaining) [2023-11-06 22:42:07,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 19 remaining) [2023-11-06 22:42:07,324 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-11-06 22:42:07,324 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-11-06 22:42:07,324 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-11-06 22:42:07,324 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-11-06 22:42:07,324 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-11-06 22:42:07,324 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-11-06 22:42:07,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:07,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-06 22:42:07,531 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:07,538 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:42:07,538 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:42:07,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:42:07 BasicIcfg [2023-11-06 22:42:07,541 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:42:07,542 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:42:07,542 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:42:07,542 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:42:07,543 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:41:34" (3/4) ... [2023-11-06 22:42:07,544 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:42:07,547 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 22:42:07,547 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 22:42:07,547 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-06 22:42:07,553 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2023-11-06 22:42:07,554 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 22:42:07,554 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:42:07,555 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:42:07,627 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:42:07,628 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:42:07,628 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:42:07,629 INFO L158 Benchmark]: Toolchain (without parser) took 34269.21ms. Allocated memory was 180.4MB in the beginning and 922.7MB in the end (delta: 742.4MB). Free memory was 149.7MB in the beginning and 326.8MB in the end (delta: -177.0MB). Peak memory consumption was 566.0MB. Max. memory is 16.1GB. [2023-11-06 22:42:07,629 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 125.8MB. Free memory is still 98.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:42:07,630 INFO L158 Benchmark]: CACSL2BoogieTranslator took 417.47ms. Allocated memory is still 180.4MB. Free memory was 149.5MB in the beginning and 141.0MB in the end (delta: 8.5MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2023-11-06 22:42:07,631 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.22ms. Allocated memory is still 180.4MB. Free memory was 141.0MB in the beginning and 139.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:42:07,631 INFO L158 Benchmark]: Boogie Preprocessor took 74.84ms. Allocated memory is still 180.4MB. Free memory was 139.0MB in the beginning and 137.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:42:07,632 INFO L158 Benchmark]: RCFGBuilder took 767.14ms. Allocated memory is still 180.4MB. Free memory was 137.7MB in the beginning and 135.2MB in the end (delta: 2.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 22:42:07,632 INFO L158 Benchmark]: TraceAbstraction took 32867.04ms. Allocated memory was 180.4MB in the beginning and 922.7MB in the end (delta: 742.4MB). Free memory was 134.0MB in the beginning and 330.9MB in the end (delta: -197.0MB). Peak memory consumption was 547.4MB. Max. memory is 16.1GB. [2023-11-06 22:42:07,633 INFO L158 Benchmark]: Witness Printer took 86.41ms. Allocated memory is still 922.7MB. Free memory was 330.9MB in the beginning and 326.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 22:42:07,635 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 125.8MB. Free memory is still 98.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 417.47ms. Allocated memory is still 180.4MB. Free memory was 149.5MB in the beginning and 141.0MB in the end (delta: 8.5MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.22ms. Allocated memory is still 180.4MB. Free memory was 141.0MB in the beginning and 139.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.84ms. Allocated memory is still 180.4MB. Free memory was 139.0MB in the beginning and 137.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 767.14ms. Allocated memory is still 180.4MB. Free memory was 137.7MB in the beginning and 135.2MB in the end (delta: 2.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 32867.04ms. Allocated memory was 180.4MB in the beginning and 922.7MB in the end (delta: 742.4MB). Free memory was 134.0MB in the beginning and 330.9MB in the end (delta: -197.0MB). Peak memory consumption was 547.4MB. Max. memory is 16.1GB. * Witness Printer took 86.41ms. Allocated memory is still 922.7MB. Free memory was 330.9MB in the beginning and 326.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.6s, 180 PlacesBefore, 41 PlacesAfterwards, 185 TransitionsBefore, 37 TransitionsAfterwards, 2950 CoEnabledTransitionPairs, 7 FixpointIterations, 105 TrivialSequentialCompositions, 51 ConcurrentSequentialCompositions, 19 TrivialYvCompositions, 8 ConcurrentYvCompositions, 9 ChoiceCompositions, 192 TotalNumberOfCompositions, 4852 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3264, independent: 3147, independent conditional: 0, independent unconditional: 3147, dependent: 117, dependent conditional: 0, dependent unconditional: 117, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1652, independent: 1622, independent conditional: 0, independent unconditional: 1622, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3264, independent: 1525, independent conditional: 0, independent unconditional: 1525, dependent: 87, dependent conditional: 0, dependent unconditional: 87, unknown: 1652, unknown conditional: 0, unknown unconditional: 1652] , Statistics on independence cache: Total cache size (in pairs): 131, Positive cache size: 121, Positive conditional cache size: 0, Positive unconditional cache size: 121, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 113]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 113]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 113]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 113]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 247 locations, 19 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 32.7s, OverallIterations: 21, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 16.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3239 SdHoareTripleChecker+Valid, 5.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2565 mSDsluCounter, 1272 SdHoareTripleChecker+Invalid, 4.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1130 mSDsCounter, 231 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6118 IncrementalHoareTripleChecker+Invalid, 6349 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 231 mSolverCounterUnsat, 142 mSDtfsCounter, 6118 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 300 GetRequests, 163 SyntacticMatches, 7 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=412occurred in iteration=16, InterpolantAutomatonStates: 122, 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, 0.6s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 344 NumberOfCodeBlocks, 320 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 385 ConstructedInterpolants, 0 QuantifiedInterpolants, 1079 SizeOfPredicates, 19 NumberOfNonLiveVariables, 1941 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 41 InterpolantComputations, 14 PerfectInterpolantSequences, 172/233 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 22:42:07,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3da16fac-3036-467f-a1a0-9426c0454fc1/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE