./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-sorted.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_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/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_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/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_0a482e6d-e892-4c9e-b316-04a104b473da/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 362fd638a164593c63fbfc307f633b7ac4c475762218e6a2237e90d5b6553a84 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:09:59,487 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:09:59,580 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:09:59,589 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:09:59,590 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:09:59,640 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:09:59,645 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:09:59,646 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:09:59,647 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:09:59,652 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:09:59,655 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:09:59,656 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:09:59,657 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:09:59,659 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:09:59,659 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:09:59,660 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:09:59,660 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:09:59,660 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:09:59,661 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:09:59,662 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:09:59,662 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:09:59,663 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:09:59,663 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:09:59,663 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:09:59,664 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:09:59,664 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:09:59,665 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:09:59,665 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:09:59,666 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:09:59,666 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:09:59,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:09:59,668 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:09:59,668 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:09:59,668 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:09:59,669 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:09:59,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:09:59,669 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:09:59,669 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:09:59,670 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:09:59,670 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:09:59,670 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:09:59,670 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_0a482e6d-e892-4c9e-b316-04a104b473da/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 362fd638a164593c63fbfc307f633b7ac4c475762218e6a2237e90d5b6553a84 [2023-11-06 22:10:00,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:10:00,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:10:00,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:10:00,046 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:10:00,047 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:10:00,049 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c [2023-11-06 22:10:03,391 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:10:03,662 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:10:03,662 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c [2023-11-06 22:10:03,673 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/data/85dc4b5d8/e27f51d18f62489c9c4302611d9cecbc/FLAG1e6ace33b [2023-11-06 22:10:03,693 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/data/85dc4b5d8/e27f51d18f62489c9c4302611d9cecbc [2023-11-06 22:10:03,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:10:03,698 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:10:03,700 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:10:03,701 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:10:03,708 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:10:03,709 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:10:03" (1/1) ... [2023-11-06 22:10:03,710 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4230e300 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:03, skipping insertion in model container [2023-11-06 22:10:03,711 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:10:03" (1/1) ... [2023-11-06 22:10:03,744 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:10:03,967 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:10:03,979 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:10:04,048 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:10:04,070 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:10:04,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:04 WrapperNode [2023-11-06 22:10:04,071 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:10:04,073 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:10:04,073 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:10:04,073 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:10:04,082 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:04" (1/1) ... [2023-11-06 22:10:04,106 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:04" (1/1) ... [2023-11-06 22:10:04,148 INFO L138 Inliner]: procedures = 24, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 112 [2023-11-06 22:10:04,149 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:10:04,150 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:10:04,151 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:10:04,151 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:10:04,161 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:04" (1/1) ... [2023-11-06 22:10:04,161 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:04" (1/1) ... [2023-11-06 22:10:04,179 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:04" (1/1) ... [2023-11-06 22:10:04,181 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:04" (1/1) ... [2023-11-06 22:10:04,192 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:04" (1/1) ... [2023-11-06 22:10:04,208 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:04" (1/1) ... [2023-11-06 22:10:04,210 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:04" (1/1) ... [2023-11-06 22:10:04,212 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:04" (1/1) ... [2023-11-06 22:10:04,215 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:10:04,221 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:10:04,221 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:10:04,221 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:10:04,222 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:04" (1/1) ... [2023-11-06 22:10:04,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:10:04,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:04,255 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:10:04,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:10:04,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:10:04,312 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:10:04,312 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:10:04,312 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:10:04,312 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:10:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:10:04,313 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:10:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:10:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:10:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:10:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:10:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:10:04,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:10:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:10:04,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:10:04,319 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 22:10:04,433 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:10:04,435 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:10:04,880 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:10:04,892 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:10:04,892 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 22:10:04,895 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:10:04 BoogieIcfgContainer [2023-11-06 22:10:04,895 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:10:04,898 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:10:04,898 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:10:04,901 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:10:04,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:10:03" (1/3) ... [2023-11-06 22:10:04,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411babca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:10:04, skipping insertion in model container [2023-11-06 22:10:04,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:04" (2/3) ... [2023-11-06 22:10:04,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411babca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:10:04, skipping insertion in model container [2023-11-06 22:10:04,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:10:04" (3/3) ... [2023-11-06 22:10:04,905 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sorted.wvr.c [2023-11-06 22:10:04,915 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:10:04,927 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:10:04,927 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-06 22:10:04,927 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:10:05,112 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:10:05,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 225 transitions, 471 flow [2023-11-06 22:10:05,332 INFO L124 PetriNetUnfolderBase]: 15/222 cut-off events. [2023-11-06 22:10:05,332 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:10:05,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 222 events. 15/222 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 364 event pairs, 0 based on Foata normal form. 0/189 useless extension candidates. Maximal degree in co-relation 160. Up to 2 conditions per place. [2023-11-06 22:10:05,342 INFO L82 GeneralOperation]: Start removeDead. Operand has 220 places, 225 transitions, 471 flow [2023-11-06 22:10:05,357 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 194 places, 198 transitions, 411 flow [2023-11-06 22:10:05,362 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:10:05,378 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 194 places, 198 transitions, 411 flow [2023-11-06 22:10:05,383 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 194 places, 198 transitions, 411 flow [2023-11-06 22:10:05,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 198 transitions, 411 flow [2023-11-06 22:10:05,473 INFO L124 PetriNetUnfolderBase]: 14/198 cut-off events. [2023-11-06 22:10:05,473 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:10:05,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 198 events. 14/198 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 362 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 160. Up to 2 conditions per place. [2023-11-06 22:10:05,483 INFO L119 LiptonReduction]: Number of co-enabled transitions 7840 [2023-11-06 22:10:14,785 INFO L134 LiptonReduction]: Checked pairs total: 9389 [2023-11-06 22:10:14,786 INFO L136 LiptonReduction]: Total number of compositions: 223 [2023-11-06 22:10:14,815 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:10:14,825 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;@6ae6eb6c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:10:14,825 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2023-11-06 22:10:14,828 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:10:14,829 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 22:10:14,829 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:10:14,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:14,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:10:14,830 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-06 22:10:14,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:14,839 INFO L85 PathProgramCache]: Analyzing trace with hash 27628, now seen corresponding path program 1 times [2023-11-06 22:10:14,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:14,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698105845] [2023-11-06 22:10:14,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:14,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:15,258 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 22:10:15,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:15,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698105845] [2023-11-06 22:10:15,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698105845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:15,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:15,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:10:15,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507647092] [2023-11-06 22:10:15,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:15,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:10:15,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:15,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:10:15,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:10:15,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 448 [2023-11-06 22:10:15,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states 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 22:10:15,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:15,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 448 [2023-11-06 22:10:15,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:16,255 INFO L124 PetriNetUnfolderBase]: 4582/6029 cut-off events. [2023-11-06 22:10:16,255 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2023-11-06 22:10:16,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12074 conditions, 6029 events. 4582/6029 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 29124 event pairs, 2364 based on Foata normal form. 0/2243 useless extension candidates. Maximal degree in co-relation 11015. Up to 5798 conditions per place. [2023-11-06 22:10:16,323 INFO L140 encePairwiseOnDemand]: 440/448 looper letters, 37 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2023-11-06 22:10:16,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 45 transitions, 185 flow [2023-11-06 22:10:16,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:10:16,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:10:16,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 660 transitions. [2023-11-06 22:10:16,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49107142857142855 [2023-11-06 22:10:16,355 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 660 transitions. [2023-11-06 22:10:16,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 660 transitions. [2023-11-06 22:10:16,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:16,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 660 transitions. [2023-11-06 22:10:16,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states 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 22:10:16,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 22:10:16,384 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 22:10:16,386 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 107 flow. Second operand 3 states and 660 transitions. [2023-11-06 22:10:16,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 45 transitions, 185 flow [2023-11-06 22:10:16,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 45 transitions, 176 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 22:10:16,414 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 113 flow [2023-11-06 22:10:16,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=448, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=45, PETRI_TRANSITIONS=45} [2023-11-06 22:10:16,423 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -5 predicate places. [2023-11-06 22:10:16,423 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 113 flow [2023-11-06 22:10:16,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states 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 22:10:16,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:16,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:10:16,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:10:16,425 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-06 22:10:16,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:16,426 INFO L85 PathProgramCache]: Analyzing trace with hash 858569, now seen corresponding path program 1 times [2023-11-06 22:10:16,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:16,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822265505] [2023-11-06 22:10:16,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:16,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:16,570 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 22:10:16,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:16,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822265505] [2023-11-06 22:10:16,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822265505] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:10:16,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565956303] [2023-11-06 22:10:16,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:16,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:16,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:16,576 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:16,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:10:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:16,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:10:16,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:16,735 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 22:10:16,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:10:16,757 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 22:10:16,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565956303] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:10:16,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:10:16,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-06 22:10:16,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458411139] [2023-11-06 22:10:16,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:10:16,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:10:16,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:16,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:10:16,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:10:16,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 448 [2023-11-06 22:10:16,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 113 flow. Second operand has 7 states, 7 states have (on average 206.14285714285714) internal successors, (1443), 7 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states 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 22:10:16,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:16,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 448 [2023-11-06 22:10:16,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:17,807 INFO L124 PetriNetUnfolderBase]: 4588/6038 cut-off events. [2023-11-06 22:10:17,808 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-06 22:10:17,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12039 conditions, 6038 events. 4588/6038 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 29209 event pairs, 2364 based on Foata normal form. 0/2246 useless extension candidates. Maximal degree in co-relation 11985. Up to 5800 conditions per place. [2023-11-06 22:10:17,870 INFO L140 encePairwiseOnDemand]: 443/448 looper letters, 36 selfloop transitions, 13 changer transitions 0/54 dead transitions. [2023-11-06 22:10:17,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 54 transitions, 247 flow [2023-11-06 22:10:17,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:10:17,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:10:17,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1487 transitions. [2023-11-06 22:10:17,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4741709183673469 [2023-11-06 22:10:17,877 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1487 transitions. [2023-11-06 22:10:17,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1487 transitions. [2023-11-06 22:10:17,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:17,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1487 transitions. [2023-11-06 22:10:17,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 212.42857142857142) internal successors, (1487), 7 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states 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 22:10:17,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 448.0) internal successors, (3584), 8 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states 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 22:10:17,901 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 448.0) internal successors, (3584), 8 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states 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 22:10:17,901 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 113 flow. Second operand 7 states and 1487 transitions. [2023-11-06 22:10:17,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 54 transitions, 247 flow [2023-11-06 22:10:17,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 54 transitions, 242 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:10:17,905 INFO L231 Difference]: Finished difference. Result has 53 places, 54 transitions, 192 flow [2023-11-06 22:10:17,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=448, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=192, PETRI_PLACES=53, PETRI_TRANSITIONS=54} [2023-11-06 22:10:17,906 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 3 predicate places. [2023-11-06 22:10:17,906 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 54 transitions, 192 flow [2023-11-06 22:10:17,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 206.14285714285714) internal successors, (1443), 7 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states 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 22:10:17,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:17,908 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-11-06 22:10:17,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:18,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-06 22:10:18,114 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-06 22:10:18,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:18,115 INFO L85 PathProgramCache]: Analyzing trace with hash 26617196, now seen corresponding path program 1 times [2023-11-06 22:10:18,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:18,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307938356] [2023-11-06 22:10:18,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:18,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:18,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:10:18,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:18,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307938356] [2023-11-06 22:10:18,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307938356] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:18,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:18,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:10:18,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228868659] [2023-11-06 22:10:18,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:18,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:10:18,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:18,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:10:18,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:10:18,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 448 [2023-11-06 22:10:18,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 54 transitions, 192 flow. Second operand has 3 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 22:10:18,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:18,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 448 [2023-11-06 22:10:18,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:19,067 INFO L124 PetriNetUnfolderBase]: 4585/6034 cut-off events. [2023-11-06 22:10:19,067 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-06 22:10:19,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12047 conditions, 6034 events. 4585/6034 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 29122 event pairs, 2364 based on Foata normal form. 0/2250 useless extension candidates. Maximal degree in co-relation 12011. Up to 5797 conditions per place. [2023-11-06 22:10:19,116 INFO L140 encePairwiseOnDemand]: 445/448 looper letters, 39 selfloop transitions, 6 changer transitions 0/50 dead transitions. [2023-11-06 22:10:19,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 50 transitions, 255 flow [2023-11-06 22:10:19,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:10:19,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:10:19,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 653 transitions. [2023-11-06 22:10:19,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48586309523809523 [2023-11-06 22:10:19,120 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 653 transitions. [2023-11-06 22:10:19,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 653 transitions. [2023-11-06 22:10:19,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:19,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 653 transitions. [2023-11-06 22:10:19,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 states 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 22:10:19,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 22:10:19,129 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 22:10:19,129 INFO L175 Difference]: Start difference. First operand has 53 places, 54 transitions, 192 flow. Second operand 3 states and 653 transitions. [2023-11-06 22:10:19,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 50 transitions, 255 flow [2023-11-06 22:10:19,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 50 transitions, 234 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-06 22:10:19,133 INFO L231 Difference]: Finished difference. Result has 52 places, 50 transitions, 156 flow [2023-11-06 22:10:19,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=448, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=50, 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=156, PETRI_PLACES=52, PETRI_TRANSITIONS=50} [2023-11-06 22:10:19,134 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2023-11-06 22:10:19,134 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 50 transitions, 156 flow [2023-11-06 22:10:19,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 22:10:19,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:19,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:10:19,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:10:19,136 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-06 22:10:19,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:19,136 INFO L85 PathProgramCache]: Analyzing trace with hash 825007978, now seen corresponding path program 1 times [2023-11-06 22:10:19,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:19,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368400717] [2023-11-06 22:10:19,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:19,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:19,208 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 22:10:19,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:19,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368400717] [2023-11-06 22:10:19,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368400717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:19,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:19,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:10:19,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058067498] [2023-11-06 22:10:19,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:19,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:10:19,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:19,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:10:19,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:10:19,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 448 [2023-11-06 22:10:19,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 50 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states 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 22:10:19,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:19,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 448 [2023-11-06 22:10:19,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:20,064 INFO L124 PetriNetUnfolderBase]: 4585/5864 cut-off events. [2023-11-06 22:10:20,064 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-11-06 22:10:20,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11874 conditions, 5864 events. 4585/5864 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 26363 event pairs, 2364 based on Foata normal form. 0/2082 useless extension candidates. Maximal degree in co-relation 11840. Up to 5796 conditions per place. [2023-11-06 22:10:20,114 INFO L140 encePairwiseOnDemand]: 445/448 looper letters, 40 selfloop transitions, 5 changer transitions 0/48 dead transitions. [2023-11-06 22:10:20,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 48 transitions, 242 flow [2023-11-06 22:10:20,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:10:20,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:10:20,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 651 transitions. [2023-11-06 22:10:20,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484375 [2023-11-06 22:10:20,119 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 651 transitions. [2023-11-06 22:10:20,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 651 transitions. [2023-11-06 22:10:20,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:20,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 651 transitions. [2023-11-06 22:10:20,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states 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 22:10:20,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 22:10:20,130 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 22:10:20,130 INFO L175 Difference]: Start difference. First operand has 52 places, 50 transitions, 156 flow. Second operand 3 states and 651 transitions. [2023-11-06 22:10:20,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 48 transitions, 242 flow [2023-11-06 22:10:20,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 48 transitions, 230 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:10:20,134 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 150 flow [2023-11-06 22:10:20,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=448, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2023-11-06 22:10:20,137 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 0 predicate places. [2023-11-06 22:10:20,137 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 150 flow [2023-11-06 22:10:20,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states 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 22:10:20,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:20,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:10:20,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:10:20,143 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-06 22:10:20,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:20,144 INFO L85 PathProgramCache]: Analyzing trace with hash 825008277, now seen corresponding path program 1 times [2023-11-06 22:10:20,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:20,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131117476] [2023-11-06 22:10:20,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:20,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:20,239 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 22:10:20,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:20,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131117476] [2023-11-06 22:10:20,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131117476] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:20,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:20,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:10:20,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259280480] [2023-11-06 22:10:20,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:20,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:10:20,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:20,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:10:20,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:10:20,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 448 [2023-11-06 22:10:20,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 150 flow. Second operand has 3 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 22:10:20,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:20,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 448 [2023-11-06 22:10:20,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:21,269 INFO L124 PetriNetUnfolderBase]: 6254/8045 cut-off events. [2023-11-06 22:10:21,270 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-11-06 22:10:21,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16327 conditions, 8045 events. 6254/8045 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 658. Compared 39259 event pairs, 2419 based on Foata normal form. 0/3150 useless extension candidates. Maximal degree in co-relation 16293. Up to 5568 conditions per place. [2023-11-06 22:10:21,324 INFO L140 encePairwiseOnDemand]: 442/448 looper letters, 68 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2023-11-06 22:10:21,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 73 transitions, 345 flow [2023-11-06 22:10:21,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:10:21,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:10:21,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 681 transitions. [2023-11-06 22:10:21,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5066964285714286 [2023-11-06 22:10:21,328 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 681 transitions. [2023-11-06 22:10:21,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 681 transitions. [2023-11-06 22:10:21,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:21,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 681 transitions. [2023-11-06 22:10:21,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states 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 22:10:21,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 22:10:21,337 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 22:10:21,337 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 150 flow. Second operand 3 states and 681 transitions. [2023-11-06 22:10:21,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 73 transitions, 345 flow [2023-11-06 22:10:21,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 73 transitions, 340 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:10:21,340 INFO L231 Difference]: Finished difference. Result has 52 places, 50 transitions, 168 flow [2023-11-06 22:10:21,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=448, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=52, PETRI_TRANSITIONS=50} [2023-11-06 22:10:21,341 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2023-11-06 22:10:21,342 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 50 transitions, 168 flow [2023-11-06 22:10:21,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 22:10:21,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:21,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:10:21,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:10:21,343 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-06 22:10:21,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:21,343 INFO L85 PathProgramCache]: Analyzing trace with hash 825008095, now seen corresponding path program 1 times [2023-11-06 22:10:21,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:21,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221066761] [2023-11-06 22:10:21,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:21,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:21,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:21,376 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 22:10:21,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:21,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221066761] [2023-11-06 22:10:21,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221066761] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:21,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:21,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:10:21,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088842090] [2023-11-06 22:10:21,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:21,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:10:21,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:21,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:10:21,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:10:21,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 448 [2023-11-06 22:10:21,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 50 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states 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 22:10:21,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:21,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 448 [2023-11-06 22:10:21,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:22,019 INFO L124 PetriNetUnfolderBase]: 4039/5247 cut-off events. [2023-11-06 22:10:22,020 INFO L125 PetriNetUnfolderBase]: For 413/515 co-relation queries the response was YES. [2023-11-06 22:10:22,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11600 conditions, 5247 events. 4039/5247 cut-off events. For 413/515 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 23861 event pairs, 2207 based on Foata normal form. 102/2500 useless extension candidates. Maximal degree in co-relation 11565. Up to 5194 conditions per place. [2023-11-06 22:10:22,062 INFO L140 encePairwiseOnDemand]: 445/448 looper letters, 44 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2023-11-06 22:10:22,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 48 transitions, 254 flow [2023-11-06 22:10:22,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:10:22,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:10:22,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 649 transitions. [2023-11-06 22:10:22,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48288690476190477 [2023-11-06 22:10:22,067 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 649 transitions. [2023-11-06 22:10:22,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 649 transitions. [2023-11-06 22:10:22,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:22,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 649 transitions. [2023-11-06 22:10:22,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 0 states 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 22:10:22,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 22:10:22,074 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 22:10:22,075 INFO L175 Difference]: Start difference. First operand has 52 places, 50 transitions, 168 flow. Second operand 3 states and 649 transitions. [2023-11-06 22:10:22,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 48 transitions, 254 flow [2023-11-06 22:10:22,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 48 transitions, 251 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:10:22,081 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 163 flow [2023-11-06 22:10:22,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=448, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=163, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2023-11-06 22:10:22,086 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-11-06 22:10:22,086 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 163 flow [2023-11-06 22:10:22,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states 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 22:10:22,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:22,087 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 22:10:22,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:10:22,087 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-06 22:10:22,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:22,089 INFO L85 PathProgramCache]: Analyzing trace with hash -190611715, now seen corresponding path program 2 times [2023-11-06 22:10:22,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:22,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5605850] [2023-11-06 22:10:22,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:22,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:22,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:22,191 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 22:10:22,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:22,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5605850] [2023-11-06 22:10:22,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5605850] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:10:22,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948791709] [2023-11-06 22:10:22,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:10:22,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:22,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:22,194 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:22,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:10:22,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:10:22,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:10:22,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:10:22,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:22,308 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 22:10:22,308 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:10:22,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948791709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:22,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:10:22,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-06 22:10:22,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332733748] [2023-11-06 22:10:22,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:22,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:10:22,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:22,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:10:22,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:10:22,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 448 [2023-11-06 22:10:22,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states 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 22:10:22,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:22,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 448 [2023-11-06 22:10:22,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:23,149 INFO L124 PetriNetUnfolderBase]: 4072/5279 cut-off events. [2023-11-06 22:10:23,149 INFO L125 PetriNetUnfolderBase]: For 399/500 co-relation queries the response was YES. [2023-11-06 22:10:23,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11461 conditions, 5279 events. 4072/5279 cut-off events. For 399/500 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 23966 event pairs, 2221 based on Foata normal form. 102/2516 useless extension candidates. Maximal degree in co-relation 11448. Up to 5227 conditions per place. [2023-11-06 22:10:23,198 INFO L140 encePairwiseOnDemand]: 445/448 looper letters, 38 selfloop transitions, 6 changer transitions 0/47 dead transitions. [2023-11-06 22:10:23,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 47 transitions, 241 flow [2023-11-06 22:10:23,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:10:23,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:10:23,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 656 transitions. [2023-11-06 22:10:23,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2023-11-06 22:10:23,203 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 656 transitions. [2023-11-06 22:10:23,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 656 transitions. [2023-11-06 22:10:23,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:23,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 656 transitions. [2023-11-06 22:10:23,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.66666666666666) internal successors, (656), 3 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:23,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 22:10:23,211 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 22:10:23,211 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 163 flow. Second operand 3 states and 656 transitions. [2023-11-06 22:10:23,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 47 transitions, 241 flow [2023-11-06 22:10:23,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 47 transitions, 224 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-06 22:10:23,214 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 148 flow [2023-11-06 22:10:23,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=448, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2023-11-06 22:10:23,215 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -3 predicate places. [2023-11-06 22:10:23,216 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 148 flow [2023-11-06 22:10:23,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states 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 22:10:23,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:23,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:23,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:23,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-06 22:10:23,427 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-06 22:10:23,428 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:23,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1727895908, now seen corresponding path program 1 times [2023-11-06 22:10:23,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:23,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970168572] [2023-11-06 22:10:23,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:23,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:23,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:23,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:23,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:23,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970168572] [2023-11-06 22:10:23,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970168572] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:23,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:23,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:10:23,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272167387] [2023-11-06 22:10:23,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:23,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:10:23,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:23,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:10:23,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:10:23,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 448 [2023-11-06 22:10:23,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 148 flow. Second operand has 3 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 22:10:23,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:23,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 448 [2023-11-06 22:10:23,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:24,474 INFO L124 PetriNetUnfolderBase]: 5217/6814 cut-off events. [2023-11-06 22:10:24,474 INFO L125 PetriNetUnfolderBase]: For 605/746 co-relation queries the response was YES. [2023-11-06 22:10:24,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14883 conditions, 6814 events. 5217/6814 cut-off events. For 605/746 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 32041 event pairs, 2305 based on Foata normal form. 141/3690 useless extension candidates. Maximal degree in co-relation 14873. Up to 5044 conditions per place. [2023-11-06 22:10:24,529 INFO L140 encePairwiseOnDemand]: 441/448 looper letters, 66 selfloop transitions, 3 changer transitions 0/71 dead transitions. [2023-11-06 22:10:24,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 71 transitions, 351 flow [2023-11-06 22:10:24,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:10:24,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:10:24,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 676 transitions. [2023-11-06 22:10:24,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2023-11-06 22:10:24,533 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 676 transitions. [2023-11-06 22:10:24,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 676 transitions. [2023-11-06 22:10:24,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:24,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 676 transitions. [2023-11-06 22:10:24,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states 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 22:10:24,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 22:10:24,541 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 22:10:24,541 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 148 flow. Second operand 3 states and 676 transitions. [2023-11-06 22:10:24,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 71 transitions, 351 flow [2023-11-06 22:10:24,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 71 transitions, 339 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:10:24,544 INFO L231 Difference]: Finished difference. Result has 48 places, 49 transitions, 161 flow [2023-11-06 22:10:24,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=448, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=48, PETRI_TRANSITIONS=49} [2023-11-06 22:10:24,546 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -2 predicate places. [2023-11-06 22:10:24,546 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 49 transitions, 161 flow [2023-11-06 22:10:24,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 22:10:24,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:24,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:24,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:10:24,547 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-06 22:10:24,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:24,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1735959875, now seen corresponding path program 1 times [2023-11-06 22:10:24,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:24,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007551399] [2023-11-06 22:10:24,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:24,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:24,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:24,585 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 22:10:24,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:24,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007551399] [2023-11-06 22:10:24,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007551399] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:24,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:24,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:10:24,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716774014] [2023-11-06 22:10:24,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:24,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:10:24,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:24,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:10:24,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:10:24,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 448 [2023-11-06 22:10:24,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 49 transitions, 161 flow. Second operand has 3 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 22:10:24,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:24,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 448 [2023-11-06 22:10:24,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:25,250 INFO L124 PetriNetUnfolderBase]: 4501/5835 cut-off events. [2023-11-06 22:10:25,250 INFO L125 PetriNetUnfolderBase]: For 613/726 co-relation queries the response was YES. [2023-11-06 22:10:25,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13861 conditions, 5835 events. 4501/5835 cut-off events. For 613/726 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 28081 event pairs, 641 based on Foata normal form. 113/3529 useless extension candidates. Maximal degree in co-relation 13851. Up to 4297 conditions per place. [2023-11-06 22:10:25,290 INFO L140 encePairwiseOnDemand]: 444/448 looper letters, 62 selfloop transitions, 3 changer transitions 0/67 dead transitions. [2023-11-06 22:10:25,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 67 transitions, 344 flow [2023-11-06 22:10:25,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:10:25,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:10:25,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 668 transitions. [2023-11-06 22:10:25,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2023-11-06 22:10:25,294 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 668 transitions. [2023-11-06 22:10:25,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 668 transitions. [2023-11-06 22:10:25,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:25,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 668 transitions. [2023-11-06 22:10:25,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 0 states have call successors, (0), 0 states 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 22:10:25,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 22:10:25,301 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 22:10:25,301 INFO L175 Difference]: Start difference. First operand has 48 places, 49 transitions, 161 flow. Second operand 3 states and 668 transitions. [2023-11-06 22:10:25,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 67 transitions, 344 flow [2023-11-06 22:10:25,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 67 transitions, 339 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:10:25,304 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 156 flow [2023-11-06 22:10:25,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=448, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2023-11-06 22:10:25,306 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -3 predicate places. [2023-11-06 22:10:25,306 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 156 flow [2023-11-06 22:10:25,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 22:10:25,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:25,307 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:25,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:10:25,307 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-06 22:10:25,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:25,308 INFO L85 PathProgramCache]: Analyzing trace with hash 2019819770, now seen corresponding path program 1 times [2023-11-06 22:10:25,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:25,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974646572] [2023-11-06 22:10:25,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:25,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:25,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:25,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:25,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974646572] [2023-11-06 22:10:25,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974646572] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:10:25,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748688189] [2023-11-06 22:10:25,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:25,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:25,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:25,363 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:25,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:10:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:25,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:10:25,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:25,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:10:25,484 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:10:25,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748688189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:25,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:10:25,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-11-06 22:10:25,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156680448] [2023-11-06 22:10:25,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:25,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:10:25,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:25,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:10:25,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:10:25,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 448 [2023-11-06 22:10:25,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states 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 22:10:25,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:25,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 448 [2023-11-06 22:10:25,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:26,082 INFO L124 PetriNetUnfolderBase]: 3932/5135 cut-off events. [2023-11-06 22:10:26,083 INFO L125 PetriNetUnfolderBase]: For 1289/1508 co-relation queries the response was YES. [2023-11-06 22:10:26,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12189 conditions, 5135 events. 3932/5135 cut-off events. For 1289/1508 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 23524 event pairs, 2275 based on Foata normal form. 220/3205 useless extension candidates. Maximal degree in co-relation 12179. Up to 5102 conditions per place. [2023-11-06 22:10:26,120 INFO L140 encePairwiseOnDemand]: 445/448 looper letters, 41 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-11-06 22:10:26,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 237 flow [2023-11-06 22:10:26,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:10:26,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:10:26,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 643 transitions. [2023-11-06 22:10:26,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47842261904761907 [2023-11-06 22:10:26,124 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 643 transitions. [2023-11-06 22:10:26,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 643 transitions. [2023-11-06 22:10:26,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:26,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 643 transitions. [2023-11-06 22:10:26,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 0 states 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 22:10:26,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 22:10:26,132 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 22:10:26,132 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 156 flow. Second operand 3 states and 643 transitions. [2023-11-06 22:10:26,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 237 flow [2023-11-06 22:10:26,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 46 transitions, 231 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:10:26,137 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 149 flow [2023-11-06 22:10:26,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=448, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2023-11-06 22:10:26,138 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -3 predicate places. [2023-11-06 22:10:26,139 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 149 flow [2023-11-06 22:10:26,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states 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 22:10:26,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:26,140 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:26,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:26,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 22:10:26,351 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-06 22:10:26,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:26,352 INFO L85 PathProgramCache]: Analyzing trace with hash -51239482, now seen corresponding path program 1 times [2023-11-06 22:10:26,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:26,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101568701] [2023-11-06 22:10:26,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:26,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:26,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:10:26,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:26,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101568701] [2023-11-06 22:10:26,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101568701] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:10:26,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435755343] [2023-11-06 22:10:26,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:26,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:26,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:26,501 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:26,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:10:26,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:26,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:10:26,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:26,686 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 22:10:26,686 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:10:26,749 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 22:10:26,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435755343] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:10:26,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:10:26,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 11 [2023-11-06 22:10:26,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988290712] [2023-11-06 22:10:26,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:10:26,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:10:26,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:26,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:10:26,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:10:27,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 448 [2023-11-06 22:10:27,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 149 flow. Second operand has 11 states, 11 states have (on average 191.0909090909091) internal successors, (2102), 11 states have internal predecessors, (2102), 0 states have call successors, (0), 0 states 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 22:10:27,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:27,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 448 [2023-11-06 22:10:27,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:28,159 INFO L124 PetriNetUnfolderBase]: 7425/9687 cut-off events. [2023-11-06 22:10:28,159 INFO L125 PetriNetUnfolderBase]: For 1192/1378 co-relation queries the response was YES. [2023-11-06 22:10:28,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22638 conditions, 9687 events. 7425/9687 cut-off events. For 1192/1378 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 47451 event pairs, 2370 based on Foata normal form. 320/6067 useless extension candidates. Maximal degree in co-relation 22627. Up to 3984 conditions per place. [2023-11-06 22:10:28,227 INFO L140 encePairwiseOnDemand]: 439/448 looper letters, 128 selfloop transitions, 11 changer transitions 0/141 dead transitions. [2023-11-06 22:10:28,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 141 transitions, 704 flow [2023-11-06 22:10:28,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:10:28,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:10:28,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1640 transitions. [2023-11-06 22:10:28,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4575892857142857 [2023-11-06 22:10:28,237 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1640 transitions. [2023-11-06 22:10:28,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1640 transitions. [2023-11-06 22:10:28,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:28,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1640 transitions. [2023-11-06 22:10:28,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 205.0) internal successors, (1640), 8 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states 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 22:10:28,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 448.0) internal successors, (4032), 9 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states 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 22:10:28,257 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 448.0) internal successors, (4032), 9 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states 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 22:10:28,258 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 149 flow. Second operand 8 states and 1640 transitions. [2023-11-06 22:10:28,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 141 transitions, 704 flow [2023-11-06 22:10:28,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 141 transitions, 700 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:10:28,264 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 198 flow [2023-11-06 22:10:28,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=448, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=198, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2023-11-06 22:10:28,265 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 4 predicate places. [2023-11-06 22:10:28,265 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 198 flow [2023-11-06 22:10:28,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 191.0909090909091) internal successors, (2102), 11 states have internal predecessors, (2102), 0 states have call successors, (0), 0 states 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 22:10:28,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:28,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:28,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:28,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:28,473 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-06 22:10:28,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:28,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1873198735, now seen corresponding path program 1 times [2023-11-06 22:10:28,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:28,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910553605] [2023-11-06 22:10:28,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:28,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:28,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:10:28,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:28,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910553605] [2023-11-06 22:10:28,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910553605] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:28,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:28,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:10:28,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189527419] [2023-11-06 22:10:28,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:28,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:10:28,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:28,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:10:28,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:10:28,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 448 [2023-11-06 22:10:28,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 205.5) internal successors, (822), 4 states have internal predecessors, (822), 0 states have call successors, (0), 0 states 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 22:10:28,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:28,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 448 [2023-11-06 22:10:28,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:29,104 INFO L124 PetriNetUnfolderBase]: 3732/5060 cut-off events. [2023-11-06 22:10:29,104 INFO L125 PetriNetUnfolderBase]: For 2578/2950 co-relation queries the response was YES. [2023-11-06 22:10:29,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13624 conditions, 5060 events. 3732/5060 cut-off events. For 2578/2950 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 23496 event pairs, 1658 based on Foata normal form. 372/4029 useless extension candidates. Maximal degree in co-relation 13611. Up to 3394 conditions per place. [2023-11-06 22:10:29,124 INFO L140 encePairwiseOnDemand]: 443/448 looper letters, 62 selfloop transitions, 6 changer transitions 4/75 dead transitions. [2023-11-06 22:10:29,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 75 transitions, 450 flow [2023-11-06 22:10:29,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:10:29,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:10:29,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 865 transitions. [2023-11-06 22:10:29,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48270089285714285 [2023-11-06 22:10:29,129 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 865 transitions. [2023-11-06 22:10:29,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 865 transitions. [2023-11-06 22:10:29,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:29,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 865 transitions. [2023-11-06 22:10:29,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 216.25) internal successors, (865), 4 states have internal predecessors, (865), 0 states have call successors, (0), 0 states 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 22:10:29,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 448.0) internal successors, (2240), 5 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states 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 22:10:29,139 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 448.0) internal successors, (2240), 5 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states 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 22:10:29,139 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 198 flow. Second operand 4 states and 865 transitions. [2023-11-06 22:10:29,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 75 transitions, 450 flow [2023-11-06 22:10:29,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 75 transitions, 429 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-06 22:10:29,143 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 187 flow [2023-11-06 22:10:29,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=448, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=187, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2023-11-06 22:10:29,144 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2023-11-06 22:10:29,144 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 187 flow [2023-11-06 22:10:29,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 205.5) internal successors, (822), 4 states have internal predecessors, (822), 0 states have call successors, (0), 0 states 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 22:10:29,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:29,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:29,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:10:29,146 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-06 22:10:29,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:29,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1866094168, now seen corresponding path program 1 times [2023-11-06 22:10:29,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:29,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67165532] [2023-11-06 22:10:29,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:29,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:29,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:10:29,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:29,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67165532] [2023-11-06 22:10:29,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67165532] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:10:29,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275543463] [2023-11-06 22:10:29,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:29,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:29,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:29,200 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:29,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:10:29,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:29,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:10:29,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:29,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:29,387 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:10:29,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:29,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275543463] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:10:29,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:10:29,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-11-06 22:10:29,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737492216] [2023-11-06 22:10:29,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:10:29,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:10:29,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:29,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:10:29,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:10:29,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 448 [2023-11-06 22:10:29,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 187 flow. Second operand has 12 states, 12 states have (on average 189.33333333333334) internal successors, (2272), 12 states have internal predecessors, (2272), 0 states have call successors, (0), 0 states 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 22:10:29,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:29,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 448 [2023-11-06 22:10:29,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:30,992 INFO L124 PetriNetUnfolderBase]: 5663/7494 cut-off events. [2023-11-06 22:10:30,993 INFO L125 PetriNetUnfolderBase]: For 3101/3273 co-relation queries the response was YES. [2023-11-06 22:10:31,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20380 conditions, 7494 events. 5663/7494 cut-off events. For 3101/3273 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 35031 event pairs, 1400 based on Foata normal form. 194/6226 useless extension candidates. Maximal degree in co-relation 20367. Up to 3087 conditions per place. [2023-11-06 22:10:31,041 INFO L140 encePairwiseOnDemand]: 436/448 looper letters, 87 selfloop transitions, 10 changer transitions 28/127 dead transitions. [2023-11-06 22:10:31,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 127 transitions, 727 flow [2023-11-06 22:10:31,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:10:31,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:10:31,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1791 transitions. [2023-11-06 22:10:31,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44419642857142855 [2023-11-06 22:10:31,050 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1791 transitions. [2023-11-06 22:10:31,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1791 transitions. [2023-11-06 22:10:31,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:31,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1791 transitions. [2023-11-06 22:10:31,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 199.0) internal successors, (1791), 9 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states 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 22:10:31,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 448.0) internal successors, (4480), 10 states have internal predecessors, (4480), 0 states have call successors, (0), 0 states 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 22:10:31,070 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 448.0) internal successors, (4480), 10 states have internal predecessors, (4480), 0 states have call successors, (0), 0 states 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 22:10:31,070 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 187 flow. Second operand 9 states and 1791 transitions. [2023-11-06 22:10:31,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 127 transitions, 727 flow [2023-11-06 22:10:31,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 127 transitions, 705 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:10:31,081 INFO L231 Difference]: Finished difference. Result has 58 places, 47 transitions, 221 flow [2023-11-06 22:10:31,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=448, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=221, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2023-11-06 22:10:31,082 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 8 predicate places. [2023-11-06 22:10:31,082 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 221 flow [2023-11-06 22:10:31,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 189.33333333333334) internal successors, (2272), 12 states have internal predecessors, (2272), 0 states have call successors, (0), 0 states 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 22:10:31,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:31,084 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:31,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:31,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 22:10:31,290 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-06 22:10:31,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:31,290 INFO L85 PathProgramCache]: Analyzing trace with hash 148011043, now seen corresponding path program 1 times [2023-11-06 22:10:31,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:31,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311312913] [2023-11-06 22:10:31,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:31,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:31,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:10:31,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:31,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311312913] [2023-11-06 22:10:31,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311312913] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:31,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:31,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:10:31,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565345406] [2023-11-06 22:10:31,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:31,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:10:31,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:31,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:10:31,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:10:31,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 448 [2023-11-06 22:10:31,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states 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 22:10:31,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:31,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 448 [2023-11-06 22:10:31,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:32,098 INFO L124 PetriNetUnfolderBase]: 4750/6293 cut-off events. [2023-11-06 22:10:32,098 INFO L125 PetriNetUnfolderBase]: For 3429/3539 co-relation queries the response was YES. [2023-11-06 22:10:32,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18072 conditions, 6293 events. 4750/6293 cut-off events. For 3429/3539 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 29269 event pairs, 579 based on Foata normal form. 542/5081 useless extension candidates. Maximal degree in co-relation 18055. Up to 5044 conditions per place. [2023-11-06 22:10:32,138 INFO L140 encePairwiseOnDemand]: 444/448 looper letters, 54 selfloop transitions, 4 changer transitions 0/60 dead transitions. [2023-11-06 22:10:32,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 60 transitions, 375 flow [2023-11-06 22:10:32,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:10:32,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:10:32,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 657 transitions. [2023-11-06 22:10:32,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888392857142857 [2023-11-06 22:10:32,143 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 657 transitions. [2023-11-06 22:10:32,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 657 transitions. [2023-11-06 22:10:32,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:32,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 657 transitions. [2023-11-06 22:10:32,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 states 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 22:10:32,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 22:10:32,151 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 22:10:32,152 INFO L175 Difference]: Start difference. First operand has 58 places, 47 transitions, 221 flow. Second operand 3 states and 657 transitions. [2023-11-06 22:10:32,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 60 transitions, 375 flow [2023-11-06 22:10:32,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 60 transitions, 335 flow, removed 8 selfloop flow, removed 8 redundant places. [2023-11-06 22:10:32,173 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 167 flow [2023-11-06 22:10:32,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=448, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2023-11-06 22:10:32,174 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -3 predicate places. [2023-11-06 22:10:32,175 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 167 flow [2023-11-06 22:10:32,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states 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 22:10:32,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:32,175 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:10:32,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:10:32,176 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-06 22:10:32,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:32,176 INFO L85 PathProgramCache]: Analyzing trace with hash 577597266, now seen corresponding path program 2 times [2023-11-06 22:10:32,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:32,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054197956] [2023-11-06 22:10:32,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:32,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:32,355 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:10:32,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:32,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054197956] [2023-11-06 22:10:32,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054197956] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:10:32,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104234073] [2023-11-06 22:10:32,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:10:32,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:32,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:32,358 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:32,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:10:32,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:10:32,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:10:32,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:10:32,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:32,505 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:10:32,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:10:32,545 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:10:32,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104234073] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:10:32,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:10:32,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 2, 2] total 11 [2023-11-06 22:10:32,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59494288] [2023-11-06 22:10:32,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:10:32,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:10:32,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:32,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:10:32,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:10:32,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 448 [2023-11-06 22:10:32,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 167 flow. Second operand has 12 states, 12 states have (on average 188.5) internal successors, (2262), 12 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states 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 22:10:32,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:32,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 448 [2023-11-06 22:10:32,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:33,883 INFO L124 PetriNetUnfolderBase]: 6999/9338 cut-off events. [2023-11-06 22:10:33,883 INFO L125 PetriNetUnfolderBase]: For 4372/4696 co-relation queries the response was YES. [2023-11-06 22:10:33,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23946 conditions, 9338 events. 6999/9338 cut-off events. For 4372/4696 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 47455 event pairs, 1544 based on Foata normal form. 430/7470 useless extension candidates. Maximal degree in co-relation 23934. Up to 3205 conditions per place. [2023-11-06 22:10:33,926 INFO L140 encePairwiseOnDemand]: 439/448 looper letters, 106 selfloop transitions, 18 changer transitions 18/144 dead transitions. [2023-11-06 22:10:33,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 144 transitions, 842 flow [2023-11-06 22:10:33,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:10:33,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 22:10:33,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2162 transitions. [2023-11-06 22:10:33,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4387175324675325 [2023-11-06 22:10:33,935 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2162 transitions. [2023-11-06 22:10:33,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2162 transitions. [2023-11-06 22:10:33,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:33,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2162 transitions. [2023-11-06 22:10:33,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 196.54545454545453) internal successors, (2162), 11 states have internal predecessors, (2162), 0 states have call successors, (0), 0 states 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 22:10:33,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 448.0) internal successors, (5376), 12 states have internal predecessors, (5376), 0 states have call successors, (0), 0 states 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 22:10:33,953 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 448.0) internal successors, (5376), 12 states have internal predecessors, (5376), 0 states have call successors, (0), 0 states 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 22:10:33,953 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 167 flow. Second operand 11 states and 2162 transitions. [2023-11-06 22:10:33,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 144 transitions, 842 flow [2023-11-06 22:10:33,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 144 transitions, 804 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:10:33,980 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 214 flow [2023-11-06 22:10:33,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=448, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=214, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2023-11-06 22:10:33,981 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 6 predicate places. [2023-11-06 22:10:33,981 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 214 flow [2023-11-06 22:10:33,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 188.5) internal successors, (2262), 12 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states 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 22:10:33,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:33,982 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:33,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-06 22:10:34,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 22:10:34,188 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-06 22:10:34,189 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:34,189 INFO L85 PathProgramCache]: Analyzing trace with hash 504738092, now seen corresponding path program 2 times [2023-11-06 22:10:34,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:34,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035368281] [2023-11-06 22:10:34,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:34,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:34,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:34,246 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:10:34,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:34,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035368281] [2023-11-06 22:10:34,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035368281] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:34,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:34,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:10:34,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507434165] [2023-11-06 22:10:34,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:34,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:10:34,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:34,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:10:34,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:10:34,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 448 [2023-11-06 22:10:34,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states 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 22:10:34,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:34,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 448 [2023-11-06 22:10:34,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:34,915 INFO L124 PetriNetUnfolderBase]: 4824/6475 cut-off events. [2023-11-06 22:10:34,916 INFO L125 PetriNetUnfolderBase]: For 5354/5486 co-relation queries the response was YES. [2023-11-06 22:10:34,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17836 conditions, 6475 events. 4824/6475 cut-off events. For 5354/5486 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 31468 event pairs, 2900 based on Foata normal form. 292/4991 useless extension candidates. Maximal degree in co-relation 17821. Up to 6432 conditions per place. [2023-11-06 22:10:34,949 INFO L140 encePairwiseOnDemand]: 446/448 looper letters, 39 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2023-11-06 22:10:34,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 44 transitions, 288 flow [2023-11-06 22:10:34,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:10:34,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:10:34,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 648 transitions. [2023-11-06 22:10:34,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2023-11-06 22:10:34,953 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 648 transitions. [2023-11-06 22:10:34,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 648 transitions. [2023-11-06 22:10:34,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:34,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 648 transitions. [2023-11-06 22:10:34,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 0 states 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 22:10:34,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 22:10:34,959 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 448.0) internal successors, (1792), 4 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states 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 22:10:34,960 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 214 flow. Second operand 3 states and 648 transitions. [2023-11-06 22:10:34,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 44 transitions, 288 flow [2023-11-06 22:10:34,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 44 transitions, 278 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-06 22:10:34,968 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 200 flow [2023-11-06 22:10:34,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=448, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2023-11-06 22:10:34,969 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-11-06 22:10:34,969 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 200 flow [2023-11-06 22:10:34,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states 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 22:10:34,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:34,970 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:34,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:10:34,970 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-06 22:10:34,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:34,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1532986888, now seen corresponding path program 1 times [2023-11-06 22:10:34,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:34,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154567043] [2023-11-06 22:10:34,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:34,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:35,126 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:10:35,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:35,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154567043] [2023-11-06 22:10:35,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154567043] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:10:35,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641457327] [2023-11-06 22:10:35,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:35,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:35,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:35,129 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:35,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:10:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:35,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:10:35,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:35,390 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:10:35,390 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:10:35,502 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:10:35,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641457327] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:10:35,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:10:35,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-11-06 22:10:35,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598673474] [2023-11-06 22:10:35,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:10:35,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:10:35,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:35,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:10:35,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:10:36,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 448 [2023-11-06 22:10:36,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 200 flow. Second operand has 18 states, 18 states have (on average 188.77777777777777) internal successors, (3398), 18 states have internal predecessors, (3398), 0 states have call successors, (0), 0 states 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 22:10:36,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:36,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 448 [2023-11-06 22:10:36,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:36,806 INFO L124 PetriNetUnfolderBase]: 4217/5660 cut-off events. [2023-11-06 22:10:36,806 INFO L125 PetriNetUnfolderBase]: For 4750/4750 co-relation queries the response was YES. [2023-11-06 22:10:36,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15714 conditions, 5660 events. 4217/5660 cut-off events. For 4750/4750 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 25514 event pairs, 2172 based on Foata normal form. 60/4250 useless extension candidates. Maximal degree in co-relation 15699. Up to 4568 conditions per place. [2023-11-06 22:10:36,835 INFO L140 encePairwiseOnDemand]: 441/448 looper letters, 33 selfloop transitions, 4 changer transitions 49/88 dead transitions. [2023-11-06 22:10:36,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 88 transitions, 533 flow [2023-11-06 22:10:36,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:10:36,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:10:36,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1570 transitions. [2023-11-06 22:10:36,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4380580357142857 [2023-11-06 22:10:36,842 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1570 transitions. [2023-11-06 22:10:36,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1570 transitions. [2023-11-06 22:10:36,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:36,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1570 transitions. [2023-11-06 22:10:36,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 196.25) internal successors, (1570), 8 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states 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 22:10:36,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 448.0) internal successors, (4032), 9 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states 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 22:10:36,857 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 448.0) internal successors, (4032), 9 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states 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 22:10:36,858 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 200 flow. Second operand 8 states and 1570 transitions. [2023-11-06 22:10:36,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 88 transitions, 533 flow [2023-11-06 22:10:36,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 88 transitions, 532 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:10:36,869 INFO L231 Difference]: Finished difference. Result has 60 places, 39 transitions, 180 flow [2023-11-06 22:10:36,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=448, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=180, PETRI_PLACES=60, PETRI_TRANSITIONS=39} [2023-11-06 22:10:36,870 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 10 predicate places. [2023-11-06 22:10:36,870 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 39 transitions, 180 flow [2023-11-06 22:10:36,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 188.77777777777777) internal successors, (3398), 18 states have internal predecessors, (3398), 0 states have call successors, (0), 0 states 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 22:10:36,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:36,872 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:36,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:37,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 22:10:37,081 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-11-06 22:10:37,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:37,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1904552508, now seen corresponding path program 2 times [2023-11-06 22:10:37,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:37,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102313632] [2023-11-06 22:10:37,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:37,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:37,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:37,348 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:37,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:37,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102313632] [2023-11-06 22:10:37,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102313632] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:10:37,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174888036] [2023-11-06 22:10:37,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:10:37,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:37,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:37,353 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:37,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:10:37,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:10:37,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:10:37,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:10:37,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:37,548 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 22:10:37,549 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:10:37,620 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 22:10:37,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174888036] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:10:37,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:10:37,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 3, 3] total 15 [2023-11-06 22:10:37,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850944516] [2023-11-06 22:10:37,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:10:37,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:10:37,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:37,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:10:37,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:10:38,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 448 [2023-11-06 22:10:38,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 39 transitions, 180 flow. Second operand has 16 states, 16 states have (on average 187.3125) internal successors, (2997), 16 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states 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 22:10:38,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:38,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 448 [2023-11-06 22:10:38,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:39,237 INFO L124 PetriNetUnfolderBase]: 5633/7486 cut-off events. [2023-11-06 22:10:39,237 INFO L125 PetriNetUnfolderBase]: For 7030/7030 co-relation queries the response was YES. [2023-11-06 22:10:39,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22026 conditions, 7486 events. 5633/7486 cut-off events. For 7030/7030 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 36229 event pairs, 272 based on Foata normal form. 100/5724 useless extension candidates. Maximal degree in co-relation 22007. Up to 3029 conditions per place. [2023-11-06 22:10:39,258 INFO L140 encePairwiseOnDemand]: 440/448 looper letters, 0 selfloop transitions, 0 changer transitions 160/160 dead transitions. [2023-11-06 22:10:39,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 160 transitions, 1066 flow [2023-11-06 22:10:39,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:10:39,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-06 22:10:39,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2707 transitions. [2023-11-06 22:10:39,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43160076530612246 [2023-11-06 22:10:39,268 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2707 transitions. [2023-11-06 22:10:39,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2707 transitions. [2023-11-06 22:10:39,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:39,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2707 transitions. [2023-11-06 22:10:39,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 193.35714285714286) internal successors, (2707), 14 states have internal predecessors, (2707), 0 states have call successors, (0), 0 states 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 22:10:39,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 448.0) internal successors, (6720), 15 states have internal predecessors, (6720), 0 states have call successors, (0), 0 states 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 22:10:39,287 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 448.0) internal successors, (6720), 15 states have internal predecessors, (6720), 0 states have call successors, (0), 0 states 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 22:10:39,288 INFO L175 Difference]: Start difference. First operand has 60 places, 39 transitions, 180 flow. Second operand 14 states and 2707 transitions. [2023-11-06 22:10:39,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 160 transitions, 1066 flow [2023-11-06 22:10:39,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 160 transitions, 940 flow, removed 26 selfloop flow, removed 10 redundant places. [2023-11-06 22:10:39,344 INFO L231 Difference]: Finished difference. Result has 56 places, 0 transitions, 0 flow [2023-11-06 22:10:39,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=448, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=56, PETRI_TRANSITIONS=0} [2023-11-06 22:10:39,344 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 6 predicate places. [2023-11-06 22:10:39,344 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 0 transitions, 0 flow [2023-11-06 22:10:39,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 187.3125) internal successors, (2997), 16 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states 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 22:10:39,348 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 37 remaining) [2023-11-06 22:10:39,348 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 37 remaining) [2023-11-06 22:10:39,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 37 remaining) [2023-11-06 22:10:39,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 37 remaining) [2023-11-06 22:10:39,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 37 remaining) [2023-11-06 22:10:39,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 37 remaining) [2023-11-06 22:10:39,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 37 remaining) [2023-11-06 22:10:39,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 37 remaining) [2023-11-06 22:10:39,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 37 remaining) [2023-11-06 22:10:39,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 37 remaining) [2023-11-06 22:10:39,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 37 remaining) [2023-11-06 22:10:39,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 37 remaining) [2023-11-06 22:10:39,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 37 remaining) [2023-11-06 22:10:39,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 37 remaining) [2023-11-06 22:10:39,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 37 remaining) [2023-11-06 22:10:39,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 37 remaining) [2023-11-06 22:10:39,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 37 remaining) [2023-11-06 22:10:39,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 37 remaining) [2023-11-06 22:10:39,352 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 37 remaining) [2023-11-06 22:10:39,352 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 37 remaining) [2023-11-06 22:10:39,352 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 37 remaining) [2023-11-06 22:10:39,352 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 37 remaining) [2023-11-06 22:10:39,352 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 37 remaining) [2023-11-06 22:10:39,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 37 remaining) [2023-11-06 22:10:39,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 37 remaining) [2023-11-06 22:10:39,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 37 remaining) [2023-11-06 22:10:39,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 37 remaining) [2023-11-06 22:10:39,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 37 remaining) [2023-11-06 22:10:39,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 37 remaining) [2023-11-06 22:10:39,354 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 37 remaining) [2023-11-06 22:10:39,354 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 37 remaining) [2023-11-06 22:10:39,354 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 37 remaining) [2023-11-06 22:10:39,354 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 37 remaining) [2023-11-06 22:10:39,354 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 37 remaining) [2023-11-06 22:10:39,355 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 37 remaining) [2023-11-06 22:10:39,355 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 37 remaining) [2023-11-06 22:10:39,355 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 37 remaining) [2023-11-06 22:10:39,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:39,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 22:10:39,561 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:39,566 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:10:39,566 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:10:39,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:10:39 BasicIcfg [2023-11-06 22:10:39,570 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:10:39,571 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:10:39,571 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:10:39,571 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:10:39,572 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:10:04" (3/4) ... [2023-11-06 22:10:39,573 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:10:39,577 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 22:10:39,578 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 22:10:39,578 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-06 22:10:39,586 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-11-06 22:10:39,586 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 22:10:39,587 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:10:39,587 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:10:39,655 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:10:39,656 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:10:39,656 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:10:39,657 INFO L158 Benchmark]: Toolchain (without parser) took 35958.60ms. Allocated memory was 130.0MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 97.6MB in the beginning and 1.1GB in the end (delta: -972.8MB). Peak memory consumption was 473.8MB. Max. memory is 16.1GB. [2023-11-06 22:10:39,657 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 130.0MB. Free memory is still 103.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:10:39,658 INFO L158 Benchmark]: CACSL2BoogieTranslator took 371.64ms. Allocated memory is still 130.0MB. Free memory was 97.6MB in the beginning and 85.8MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 22:10:39,658 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.25ms. Allocated memory is still 130.0MB. Free memory was 85.8MB in the beginning and 84.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:10:39,658 INFO L158 Benchmark]: Boogie Preprocessor took 70.47ms. Allocated memory is still 130.0MB. Free memory was 83.7MB in the beginning and 82.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:10:39,659 INFO L158 Benchmark]: RCFGBuilder took 674.11ms. Allocated memory is still 130.0MB. Free memory was 82.0MB in the beginning and 62.3MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-06 22:10:39,661 INFO L158 Benchmark]: TraceAbstraction took 34672.66ms. Allocated memory was 130.0MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 61.9MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2023-11-06 22:10:39,661 INFO L158 Benchmark]: Witness Printer took 85.32ms. Allocated memory is still 1.6GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:10:39,664 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 130.0MB. Free memory is still 103.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 371.64ms. Allocated memory is still 130.0MB. Free memory was 97.6MB in the beginning and 85.8MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.25ms. Allocated memory is still 130.0MB. Free memory was 85.8MB in the beginning and 84.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.47ms. Allocated memory is still 130.0MB. Free memory was 83.7MB in the beginning and 82.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 674.11ms. Allocated memory is still 130.0MB. Free memory was 82.0MB in the beginning and 62.3MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 34672.66ms. Allocated memory was 130.0MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 61.9MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. * Witness Printer took 85.32ms. Allocated memory is still 1.6GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.4s, 194 PlacesBefore, 50 PlacesAfterwards, 198 TransitionsBefore, 46 TransitionsAfterwards, 7840 CoEnabledTransitionPairs, 7 FixpointIterations, 85 TrivialSequentialCompositions, 99 ConcurrentSequentialCompositions, 13 TrivialYvCompositions, 18 ConcurrentYvCompositions, 8 ChoiceCompositions, 223 TotalNumberOfCompositions, 9389 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8225, independent: 8176, independent conditional: 0, independent unconditional: 8176, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4354, independent: 4337, independent conditional: 0, independent unconditional: 4337, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8225, independent: 3839, independent conditional: 0, independent unconditional: 3839, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 4354, unknown conditional: 0, unknown unconditional: 4354] , Statistics on independence cache: Total cache size (in pairs): 168, Positive cache size: 163, Positive conditional cache size: 0, Positive unconditional cache size: 163, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 102]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 102]: 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, 300 locations, 37 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: 34.4s, OverallIterations: 18, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 19.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2865 SdHoareTripleChecker+Valid, 4.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2384 mSDsluCounter, 1628 SdHoareTripleChecker+Invalid, 3.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1542 mSDsCounter, 140 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5601 IncrementalHoareTripleChecker+Invalid, 5741 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 140 mSolverCounterUnsat, 86 mSDtfsCounter, 5601 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=221occurred in iteration=13, InterpolantAutomatonStates: 94, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 223 NumberOfCodeBlocks, 206 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 254 ConstructedInterpolants, 0 QuantifiedInterpolants, 855 SizeOfPredicates, 22 NumberOfNonLiveVariables, 1024 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 32 InterpolantComputations, 12 PerfectInterpolantSequences, 95/148 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 22:10:39,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a482e6d-e892-4c9e-b316-04a104b473da/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