./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/twostage_3.i --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_6a8f0a53-1779-48c1-ae81-2e054f45e188/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8f0a53-1779-48c1-ae81-2e054f45e188/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_6a8f0a53-1779-48c1-ae81-2e054f45e188/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8f0a53-1779-48c1-ae81-2e054f45e188/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/twostage_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8f0a53-1779-48c1-ae81-2e054f45e188/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_6a8f0a53-1779-48c1-ae81-2e054f45e188/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 c1c75e051173a22f60f33f26eab32e0b3a7dcaf46f2d4cc494d0c9d8775c984e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:53:55,451 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:53:55,580 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8f0a53-1779-48c1-ae81-2e054f45e188/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 21:53:55,590 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:53:55,591 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:53:55,636 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:53:55,638 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:53:55,639 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:53:55,640 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:53:55,645 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:53:55,646 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:53:55,647 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:53:55,648 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:53:55,649 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:53:55,650 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:53:55,651 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:53:55,651 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:53:55,652 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:53:55,652 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:53:55,653 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:53:55,653 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:53:55,654 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:53:55,655 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 21:53:55,655 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:53:55,655 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:53:55,656 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:53:55,656 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:53:55,657 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:53:55,658 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:53:55,658 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:53:55,660 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:53:55,660 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:53:55,660 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:53:55,661 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:53:55,661 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:53:55,661 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:53:55,661 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:53:55,662 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:53:55,662 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:53:55,662 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:53:55,662 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:53:55,663 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_6a8f0a53-1779-48c1-ae81-2e054f45e188/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8f0a53-1779-48c1-ae81-2e054f45e188/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1c75e051173a22f60f33f26eab32e0b3a7dcaf46f2d4cc494d0c9d8775c984e [2023-11-06 21:53:55,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:53:56,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:53:56,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:53:56,024 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:53:56,024 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:53:56,026 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8f0a53-1779-48c1-ae81-2e054f45e188/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread/twostage_3.i [2023-11-06 21:53:59,129 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:53:59,466 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:53:59,466 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8f0a53-1779-48c1-ae81-2e054f45e188/sv-benchmarks/c/pthread/twostage_3.i [2023-11-06 21:53:59,501 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8f0a53-1779-48c1-ae81-2e054f45e188/bin/uautomizer-verify-WvqO1wxjHP/data/625459452/a65964a5f5e046758abd1b1940da23d2/FLAG52941b159 [2023-11-06 21:53:59,521 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8f0a53-1779-48c1-ae81-2e054f45e188/bin/uautomizer-verify-WvqO1wxjHP/data/625459452/a65964a5f5e046758abd1b1940da23d2 [2023-11-06 21:53:59,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:53:59,530 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:53:59,533 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:53:59,533 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:53:59,540 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:53:59,541 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:53:59" (1/1) ... [2023-11-06 21:53:59,542 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a272f68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:59, skipping insertion in model container [2023-11-06 21:53:59,542 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:53:59" (1/1) ... [2023-11-06 21:53:59,629 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:54:00,444 WARN L1577 CHandler]: Possible shadowing of function lock [2023-11-06 21:54:00,446 WARN L1577 CHandler]: Possible shadowing of function lock [2023-11-06 21:54:00,448 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:54:00,499 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:54:00,636 WARN L1577 CHandler]: Possible shadowing of function lock [2023-11-06 21:54:00,638 WARN L1577 CHandler]: Possible shadowing of function lock [2023-11-06 21:54:00,639 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:54:00,794 WARN L672 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:54:00,803 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:54:00,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:00 WrapperNode [2023-11-06 21:54:00,803 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:54:00,805 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:54:00,805 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:54:00,805 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:54:00,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:00" (1/1) ... [2023-11-06 21:54:00,837 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:00" (1/1) ... [2023-11-06 21:54:00,874 INFO L138 Inliner]: procedures = 374, calls = 62, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 228 [2023-11-06 21:54:00,874 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:54:00,875 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:54:00,875 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:54:00,875 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:54:00,886 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:00" (1/1) ... [2023-11-06 21:54:00,886 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:00" (1/1) ... [2023-11-06 21:54:00,892 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:00" (1/1) ... [2023-11-06 21:54:00,893 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:00" (1/1) ... [2023-11-06 21:54:00,904 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:00" (1/1) ... [2023-11-06 21:54:00,908 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:00" (1/1) ... [2023-11-06 21:54:00,912 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:00" (1/1) ... [2023-11-06 21:54:00,914 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:00" (1/1) ... [2023-11-06 21:54:00,919 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:54:00,920 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:54:00,920 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:54:00,921 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:54:00,921 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:00" (1/1) ... [2023-11-06 21:54:00,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:54:00,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8f0a53-1779-48c1-ae81-2e054f45e188/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:54:00,966 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8f0a53-1779-48c1-ae81-2e054f45e188/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:54:00,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8f0a53-1779-48c1-ae81-2e054f45e188/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:54:01,005 INFO L130 BoogieDeclarations]: Found specification of procedure funcA [2023-11-06 21:54:01,005 INFO L138 BoogieDeclarations]: Found implementation of procedure funcA [2023-11-06 21:54:01,005 INFO L130 BoogieDeclarations]: Found specification of procedure funcB [2023-11-06 21:54:01,005 INFO L138 BoogieDeclarations]: Found implementation of procedure funcB [2023-11-06 21:54:01,005 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2023-11-06 21:54:01,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:54:01,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 21:54:01,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:54:01,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:54:01,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:54:01,006 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 21:54:01,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 21:54:01,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:54:01,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:54:01,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:54:01,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:54:01,009 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 21:54:01,180 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:54:01,183 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:54:01,667 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:54:01,680 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:54:01,680 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 21:54:01,683 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:54:01 BoogieIcfgContainer [2023-11-06 21:54:01,684 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:54:01,686 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:54:01,686 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:54:01,690 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:54:01,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:53:59" (1/3) ... [2023-11-06 21:54:01,691 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@689d9807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:54:01, skipping insertion in model container [2023-11-06 21:54:01,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:00" (2/3) ... [2023-11-06 21:54:01,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@689d9807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:54:01, skipping insertion in model container [2023-11-06 21:54:01,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:54:01" (3/3) ... [2023-11-06 21:54:01,694 INFO L112 eAbstractionObserver]: Analyzing ICFG twostage_3.i [2023-11-06 21:54:01,703 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 21:54:01,716 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:54:01,716 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-06 21:54:01,716 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:54:01,800 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-06 21:54:01,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 265 transitions, 550 flow [2023-11-06 21:54:02,065 INFO L124 PetriNetUnfolderBase]: 43/498 cut-off events. [2023-11-06 21:54:02,066 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 21:54:02,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 515 conditions, 498 events. 43/498 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1910 event pairs, 0 based on Foata normal form. 0/425 useless extension candidates. Maximal degree in co-relation 266. Up to 8 conditions per place. [2023-11-06 21:54:02,075 INFO L82 GeneralOperation]: Start removeDead. Operand has 249 places, 265 transitions, 550 flow [2023-11-06 21:54:02,085 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 249 places, 265 transitions, 550 flow [2023-11-06 21:54:02,089 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:54:02,100 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 249 places, 265 transitions, 550 flow [2023-11-06 21:54:02,104 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 249 places, 265 transitions, 550 flow [2023-11-06 21:54:02,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 265 transitions, 550 flow [2023-11-06 21:54:02,196 INFO L124 PetriNetUnfolderBase]: 43/498 cut-off events. [2023-11-06 21:54:02,196 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 21:54:02,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 515 conditions, 498 events. 43/498 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1910 event pairs, 0 based on Foata normal form. 0/425 useless extension candidates. Maximal degree in co-relation 266. Up to 8 conditions per place. [2023-11-06 21:54:02,212 INFO L119 LiptonReduction]: Number of co-enabled transitions 10242 [2023-11-06 21:54:34,306 WARN L293 SmtUtils]: Spent 6.49s on a formula simplification. DAG size of input: 283 DAG size of output: 276 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 21:54:37,324 INFO L134 LiptonReduction]: Checked pairs total: 23783 [2023-11-06 21:54:37,325 INFO L136 LiptonReduction]: Total number of compositions: 280 [2023-11-06 21:54:37,341 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:54:37,346 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;@77646501, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:54:37,346 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-06 21:54:37,352 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:54:37,352 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-11-06 21:54:37,352 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:54:37,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:37,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 21:54:37,354 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 21:54:37,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:37,360 INFO L85 PathProgramCache]: Analyzing trace with hash 29841100, now seen corresponding path program 1 times [2023-11-06 21:54:37,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:37,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310488715] [2023-11-06 21:54:37,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:37,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:38,009 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 21:54:38,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:38,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310488715] [2023-11-06 21:54:38,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310488715] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:38,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:38,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:54:38,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403245192] [2023-11-06 21:54:38,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:38,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:54:38,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:38,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:54:38,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:38,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 545 [2023-11-06 21:54:38,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 50 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 0 states 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 21:54:38,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:38,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 545 [2023-11-06 21:54:38,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:38,574 INFO L124 PetriNetUnfolderBase]: 1016/1906 cut-off events. [2023-11-06 21:54:38,574 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2023-11-06 21:54:38,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3675 conditions, 1906 events. 1016/1906 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 12229 event pairs, 526 based on Foata normal form. 0/1253 useless extension candidates. Maximal degree in co-relation 3067. Up to 995 conditions per place. [2023-11-06 21:54:38,591 INFO L140 encePairwiseOnDemand]: 528/545 looper letters, 54 selfloop transitions, 9 changer transitions 2/74 dead transitions. [2023-11-06 21:54:38,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 74 transitions, 310 flow [2023-11-06 21:54:38,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:54:38,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:54:38,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 772 transitions. [2023-11-06 21:54:38,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47217125382263 [2023-11-06 21:54:38,611 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 772 transitions. [2023-11-06 21:54:38,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 772 transitions. [2023-11-06 21:54:38,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:38,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 772 transitions. [2023-11-06 21:54:38,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states 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 21:54:38,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 545.0) internal successors, (2180), 4 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states 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 21:54:38,633 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 545.0) internal successors, (2180), 4 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states 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 21:54:38,636 INFO L175 Difference]: Start difference. First operand has 50 places, 50 transitions, 120 flow. Second operand 3 states and 772 transitions. [2023-11-06 21:54:38,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 74 transitions, 310 flow [2023-11-06 21:54:38,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 74 transitions, 310 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 21:54:38,645 INFO L231 Difference]: Finished difference. Result has 50 places, 50 transitions, 172 flow [2023-11-06 21:54:38,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=545, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=50, PETRI_TRANSITIONS=50} [2023-11-06 21:54:38,651 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 0 predicate places. [2023-11-06 21:54:38,651 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 50 transitions, 172 flow [2023-11-06 21:54:38,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 0 states 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 21:54:38,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:38,652 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-06 21:54:38,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:54:38,653 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 21:54:38,653 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:38,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1387447401, now seen corresponding path program 1 times [2023-11-06 21:54:38,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:38,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131899134] [2023-11-06 21:54:38,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:38,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:38,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:54:38,721 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:54:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:54:38,793 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 21:54:38,793 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 21:54:38,795 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-11-06 21:54:38,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-11-06 21:54:38,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-11-06 21:54:38,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-11-06 21:54:38,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-11-06 21:54:38,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-11-06 21:54:38,798 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-11-06 21:54:38,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-11-06 21:54:38,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-11-06 21:54:38,799 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-11-06 21:54:38,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-11-06 21:54:38,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 18 remaining) [2023-11-06 21:54:38,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-11-06 21:54:38,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-11-06 21:54:38,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-11-06 21:54:38,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-11-06 21:54:38,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-11-06 21:54:38,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-11-06 21:54:38,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:54:38,802 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 21:54:38,805 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 21:54:38,805 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 21:54:38,843 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-06 21:54:38,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 300 places, 319 transitions, 682 flow [2023-11-06 21:54:39,204 INFO L124 PetriNetUnfolderBase]: 163/1529 cut-off events. [2023-11-06 21:54:39,204 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-06 21:54:39,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1618 conditions, 1529 events. 163/1529 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 9208 event pairs, 1 based on Foata normal form. 0/1287 useless extension candidates. Maximal degree in co-relation 897. Up to 32 conditions per place. [2023-11-06 21:54:39,221 INFO L82 GeneralOperation]: Start removeDead. Operand has 300 places, 319 transitions, 682 flow [2023-11-06 21:54:39,234 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 300 places, 319 transitions, 682 flow [2023-11-06 21:54:39,234 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:54:39,234 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 300 places, 319 transitions, 682 flow [2023-11-06 21:54:39,235 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 300 places, 319 transitions, 682 flow [2023-11-06 21:54:39,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 300 places, 319 transitions, 682 flow [2023-11-06 21:54:39,534 INFO L124 PetriNetUnfolderBase]: 163/1529 cut-off events. [2023-11-06 21:54:39,535 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-06 21:54:39,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1618 conditions, 1529 events. 163/1529 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 9208 event pairs, 1 based on Foata normal form. 0/1287 useless extension candidates. Maximal degree in co-relation 897. Up to 32 conditions per place. [2023-11-06 21:54:39,611 INFO L119 LiptonReduction]: Number of co-enabled transitions 26016 [2023-11-06 21:55:04,131 WARN L293 SmtUtils]: Spent 8.92s on a formula simplification. DAG size of input: 281 DAG size of output: 277 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 21:55:16,093 WARN L293 SmtUtils]: Spent 8.40s on a formula simplification. DAG size of input: 303 DAG size of output: 296 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 21:55:21,329 WARN L293 SmtUtils]: Spent 5.23s on a formula simplification that was a NOOP. DAG size: 290 (called from [L 302] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 21:55:21,335 INFO L134 LiptonReduction]: Checked pairs total: 85573 [2023-11-06 21:55:21,335 INFO L136 LiptonReduction]: Total number of compositions: 319 [2023-11-06 21:55:21,337 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:55:21,338 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;@77646501, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:55:21,339 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-06 21:55:21,344 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:55:21,344 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-11-06 21:55:21,345 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:55:21,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:55:21,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 21:55:21,345 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 21:55:21,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:21,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1583248925, now seen corresponding path program 1 times [2023-11-06 21:55:21,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:21,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918075369] [2023-11-06 21:55:21,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:21,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:21,419 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 21:55:21,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:21,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918075369] [2023-11-06 21:55:21,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918075369] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:21,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:21,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:55:21,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502671112] [2023-11-06 21:55:21,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:21,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:55:21,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:21,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:55:21,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:55:21,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 638 [2023-11-06 21:55:21,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 81 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 279.3333333333333) internal successors, (838), 3 states have internal predecessors, (838), 0 states have call successors, (0), 0 states 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 21:55:21,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:55:21,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 638 [2023-11-06 21:55:21,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:55:35,762 INFO L124 PetriNetUnfolderBase]: 87040/125807 cut-off events. [2023-11-06 21:55:35,763 INFO L125 PetriNetUnfolderBase]: For 8113/8113 co-relation queries the response was YES. [2023-11-06 21:55:36,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245366 conditions, 125807 events. 87040/125807 cut-off events. For 8113/8113 co-relation queries the response was YES. Maximal size of possible extension queue 4836. Compared 1030961 event pairs, 70062 based on Foata normal form. 0/87363 useless extension candidates. Maximal degree in co-relation 45464. Up to 103922 conditions per place. [2023-11-06 21:55:37,038 INFO L140 encePairwiseOnDemand]: 632/638 looper letters, 75 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2023-11-06 21:55:37,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 101 transitions, 400 flow [2023-11-06 21:55:37,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:55:37,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:55:37,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 915 transitions. [2023-11-06 21:55:37,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4780564263322884 [2023-11-06 21:55:37,043 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 915 transitions. [2023-11-06 21:55:37,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 915 transitions. [2023-11-06 21:55:37,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:55:37,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 915 transitions. [2023-11-06 21:55:37,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 305.0) internal successors, (915), 3 states have internal predecessors, (915), 0 states have call successors, (0), 0 states 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 21:55:37,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 638.0) internal successors, (2552), 4 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states 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 21:55:37,056 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 638.0) internal successors, (2552), 4 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states 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 21:55:37,056 INFO L175 Difference]: Start difference. First operand has 80 places, 81 transitions, 206 flow. Second operand 3 states and 915 transitions. [2023-11-06 21:55:37,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 101 transitions, 400 flow [2023-11-06 21:55:37,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 101 transitions, 400 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 21:55:37,072 INFO L231 Difference]: Finished difference. Result has 78 places, 77 transitions, 202 flow [2023-11-06 21:55:37,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=638, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=78, PETRI_TRANSITIONS=77} [2023-11-06 21:55:37,074 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -2 predicate places. [2023-11-06 21:55:37,074 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 77 transitions, 202 flow [2023-11-06 21:55:37,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 279.3333333333333) internal successors, (838), 3 states have internal predecessors, (838), 0 states have call successors, (0), 0 states 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 21:55:37,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:55:37,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 21:55:37,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 21:55:37,076 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 21:55:37,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:37,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1583248926, now seen corresponding path program 1 times [2023-11-06 21:55:37,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:37,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198305169] [2023-11-06 21:55:37,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:37,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:37,163 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 21:55:37,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:37,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198305169] [2023-11-06 21:55:37,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198305169] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:37,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:37,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:55:37,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375899206] [2023-11-06 21:55:37,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:37,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:55:37,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:37,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:55:37,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:55:37,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 638 [2023-11-06 21:55:37,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 77 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 279.3333333333333) internal successors, (838), 3 states have internal predecessors, (838), 0 states have call successors, (0), 0 states 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 21:55:37,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:55:37,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 638 [2023-11-06 21:55:37,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:55:49,896 INFO L124 PetriNetUnfolderBase]: 92885/137405 cut-off events. [2023-11-06 21:55:49,897 INFO L125 PetriNetUnfolderBase]: For 11700/11700 co-relation queries the response was YES. [2023-11-06 21:55:50,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270097 conditions, 137405 events. 92885/137405 cut-off events. For 11700/11700 co-relation queries the response was YES. Maximal size of possible extension queue 5047. Compared 1176244 event pairs, 39990 based on Foata normal form. 0/101690 useless extension candidates. Maximal degree in co-relation 239031. Up to 70293 conditions per place. [2023-11-06 21:55:50,880 INFO L140 encePairwiseOnDemand]: 625/638 looper letters, 88 selfloop transitions, 9 changer transitions 0/121 dead transitions. [2023-11-06 21:55:50,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 121 transitions, 510 flow [2023-11-06 21:55:50,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:55:50,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:55:50,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2023-11-06 21:55:50,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4885057471264368 [2023-11-06 21:55:50,891 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2023-11-06 21:55:50,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2023-11-06 21:55:50,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:55:50,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2023-11-06 21:55:50,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states 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 21:55:50,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 638.0) internal successors, (2552), 4 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states 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 21:55:50,905 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 638.0) internal successors, (2552), 4 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states 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 21:55:50,905 INFO L175 Difference]: Start difference. First operand has 78 places, 77 transitions, 202 flow. Second operand 3 states and 935 transitions. [2023-11-06 21:55:50,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 121 transitions, 510 flow [2023-11-06 21:55:52,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 121 transitions, 504 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:55:52,560 INFO L231 Difference]: Finished difference. Result has 80 places, 85 transitions, 274 flow [2023-11-06 21:55:52,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=638, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=80, PETRI_TRANSITIONS=85} [2023-11-06 21:55:52,561 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, 0 predicate places. [2023-11-06 21:55:52,562 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 85 transitions, 274 flow [2023-11-06 21:55:52,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 279.3333333333333) internal successors, (838), 3 states have internal predecessors, (838), 0 states have call successors, (0), 0 states 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 21:55:52,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:55:52,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:52,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:55:52,563 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 21:55:52,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:52,564 INFO L85 PathProgramCache]: Analyzing trace with hash -495974035, now seen corresponding path program 1 times [2023-11-06 21:55:52,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:52,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213487506] [2023-11-06 21:55:52,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:52,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:52,663 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 21:55:52,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:52,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213487506] [2023-11-06 21:55:52,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213487506] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:52,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:52,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:55:52,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883534293] [2023-11-06 21:55:52,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:52,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:55:52,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:52,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:55:52,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:55:52,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 638 [2023-11-06 21:55:52,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 85 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 282.0) internal successors, (846), 3 states have internal predecessors, (846), 0 states have call successors, (0), 0 states 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 21:55:52,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:55:52,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 638 [2023-11-06 21:55:52,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:56:05,975 INFO L124 PetriNetUnfolderBase]: 90797/151514 cut-off events. [2023-11-06 21:56:05,976 INFO L125 PetriNetUnfolderBase]: For 37283/37283 co-relation queries the response was YES. [2023-11-06 21:56:06,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307654 conditions, 151514 events. 90797/151514 cut-off events. For 37283/37283 co-relation queries the response was YES. Maximal size of possible extension queue 5057. Compared 1504632 event pairs, 19734 based on Foata normal form. 14521/146075 useless extension candidates. Maximal degree in co-relation 192950. Up to 104421 conditions per place. [2023-11-06 21:56:07,286 INFO L140 encePairwiseOnDemand]: 630/638 looper letters, 107 selfloop transitions, 2 changer transitions 0/129 dead transitions. [2023-11-06 21:56:07,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 129 transitions, 659 flow [2023-11-06 21:56:07,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:56:07,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:56:07,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 940 transitions. [2023-11-06 21:56:07,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49111807732497387 [2023-11-06 21:56:07,291 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 940 transitions. [2023-11-06 21:56:07,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 940 transitions. [2023-11-06 21:56:07,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:56:07,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 940 transitions. [2023-11-06 21:56:07,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 313.3333333333333) internal successors, (940), 3 states have internal predecessors, (940), 0 states have call successors, (0), 0 states 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 21:56:07,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 638.0) internal successors, (2552), 4 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states 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 21:56:07,304 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 638.0) internal successors, (2552), 4 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states 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 21:56:07,305 INFO L175 Difference]: Start difference. First operand has 80 places, 85 transitions, 274 flow. Second operand 3 states and 940 transitions. [2023-11-06 21:56:07,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 129 transitions, 659 flow [2023-11-06 21:56:07,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 129 transitions, 625 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:56:07,383 INFO L231 Difference]: Finished difference. Result has 78 places, 83 transitions, 268 flow [2023-11-06 21:56:07,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=638, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=78, PETRI_TRANSITIONS=83} [2023-11-06 21:56:07,385 INFO L281 CegarLoopForPetriNet]: 80 programPoint places, -2 predicate places. [2023-11-06 21:56:07,385 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 83 transitions, 268 flow [2023-11-06 21:56:07,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 282.0) internal successors, (846), 3 states have internal predecessors, (846), 0 states have call successors, (0), 0 states 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 21:56:07,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:56:07,387 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-06 21:56:07,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 21:56:07,387 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-06 21:56:07,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:07,388 INFO L85 PathProgramCache]: Analyzing trace with hash -2101601921, now seen corresponding path program 1 times [2023-11-06 21:56:07,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:56:07,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588856902] [2023-11-06 21:56:07,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:07,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:56:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:07,512 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:56:07,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:56:07,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588856902] [2023-11-06 21:56:07,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588856902] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:56:07,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137209805] [2023-11-06 21:56:07,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:07,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:56:07,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8f0a53-1779-48c1-ae81-2e054f45e188/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:56:07,519 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8f0a53-1779-48c1-ae81-2e054f45e188/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:56:07,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8f0a53-1779-48c1-ae81-2e054f45e188/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process