./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-vector-add.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_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/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_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/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_df6f4dfc-9c28-42be-b493-db50e9a98abf/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 f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:09:58,313 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:09:58,422 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:09:58,434 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:09:58,435 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:09:58,476 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:09:58,477 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:09:58,478 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:09:58,479 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:09:58,484 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:09:58,486 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:09:58,487 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:09:58,487 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:09:58,489 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:09:58,490 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:09:58,490 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:09:58,491 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:09:58,491 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:09:58,492 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:09:58,492 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:09:58,493 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:09:58,493 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:09:58,494 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:09:58,496 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:09:58,496 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:09:58,497 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:09:58,497 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:09:58,498 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:09:58,498 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:09:58,499 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:09:58,500 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:09:58,501 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:09:58,501 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:09:58,501 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:09:58,502 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:09:58,502 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:09:58,502 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:09:58,502 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:09:58,503 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:09:58,503 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:09:58,503 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:09:58,504 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_df6f4dfc-9c28-42be-b493-db50e9a98abf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d [2023-11-06 22:09:58,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:09:58,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:09:58,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:09:58,902 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:09:58,902 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:09:58,904 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2023-11-06 22:10:02,107 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:10:02,458 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:10:02,459 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2023-11-06 22:10:02,469 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/data/a94275dc5/55a2d618009a4510a787339388604310/FLAGa2bf9c2c4 [2023-11-06 22:10:02,487 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/data/a94275dc5/55a2d618009a4510a787339388604310 [2023-11-06 22:10:02,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:10:02,492 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:10:02,494 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:10:02,494 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:10:02,504 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:10:02,505 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:10:02" (1/1) ... [2023-11-06 22:10:02,507 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@728352ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:02, skipping insertion in model container [2023-11-06 22:10:02,508 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:10:02" (1/1) ... [2023-11-06 22:10:02,545 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:10:02,800 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:10:02,817 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:10:02,866 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:10:02,881 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:10:02,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:02 WrapperNode [2023-11-06 22:10:02,882 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:10:02,883 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:10:02,883 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:10:02,884 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:10:02,892 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:02" (1/1) ... [2023-11-06 22:10:02,908 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:02" (1/1) ... [2023-11-06 22:10:02,941 INFO L138 Inliner]: procedures = 25, calls = 47, calls flagged for inlining = 12, calls inlined = 18, statements flattened = 213 [2023-11-06 22:10:02,942 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:10:02,943 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:10:02,943 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:10:02,943 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:10:02,955 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:02" (1/1) ... [2023-11-06 22:10:02,955 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:02" (1/1) ... [2023-11-06 22:10:02,961 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:02" (1/1) ... [2023-11-06 22:10:02,961 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:02" (1/1) ... [2023-11-06 22:10:02,978 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:02" (1/1) ... [2023-11-06 22:10:02,983 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:02" (1/1) ... [2023-11-06 22:10:02,986 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:02" (1/1) ... [2023-11-06 22:10:02,996 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:02" (1/1) ... [2023-11-06 22:10:03,000 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:10:03,001 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:10:03,002 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:10:03,002 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:10:03,003 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:02" (1/1) ... [2023-11-06 22:10:03,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:10:03,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:03,053 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:10:03,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:10:03,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:10:03,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:10:03,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:10:03,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:10:03,110 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:10:03,110 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:10:03,110 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:10:03,110 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:10:03,110 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:10:03,111 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:10:03,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:10:03,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:10:03,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:10:03,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:10:03,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:10:03,117 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 22:10:03,307 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:10:03,310 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:10:03,908 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:10:03,925 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:10:03,925 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-06 22:10:03,928 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:10:03 BoogieIcfgContainer [2023-11-06 22:10:03,929 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:10:03,932 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:10:03,932 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:10:03,936 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:10:03,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:10:02" (1/3) ... [2023-11-06 22:10:03,939 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570dbdea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:10:03, skipping insertion in model container [2023-11-06 22:10:03,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:10:02" (2/3) ... [2023-11-06 22:10:03,939 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570dbdea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:10:03, skipping insertion in model container [2023-11-06 22:10:03,940 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:10:03" (3/3) ... [2023-11-06 22:10:03,941 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2023-11-06 22:10:03,951 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:10:03,964 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:10:03,964 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-06 22:10:03,964 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:10:04,110 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:10:04,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 319 places, 334 transitions, 689 flow [2023-11-06 22:10:04,382 INFO L124 PetriNetUnfolderBase]: 25/331 cut-off events. [2023-11-06 22:10:04,383 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:10:04,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 331 events. 25/331 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 292 event pairs, 0 based on Foata normal form. 0/292 useless extension candidates. Maximal degree in co-relation 266. Up to 2 conditions per place. [2023-11-06 22:10:04,396 INFO L82 GeneralOperation]: Start removeDead. Operand has 319 places, 334 transitions, 689 flow [2023-11-06 22:10:04,414 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 278 places, 291 transitions, 597 flow [2023-11-06 22:10:04,419 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:10:04,442 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 278 places, 291 transitions, 597 flow [2023-11-06 22:10:04,448 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 278 places, 291 transitions, 597 flow [2023-11-06 22:10:04,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 278 places, 291 transitions, 597 flow [2023-11-06 22:10:04,546 INFO L124 PetriNetUnfolderBase]: 23/291 cut-off events. [2023-11-06 22:10:04,547 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:10:04,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 291 events. 23/291 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 288 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 266. Up to 2 conditions per place. [2023-11-06 22:10:04,556 INFO L119 LiptonReduction]: Number of co-enabled transitions 3534 [2023-11-06 22:10:15,921 INFO L134 LiptonReduction]: Checked pairs total: 7458 [2023-11-06 22:10:15,921 INFO L136 LiptonReduction]: Total number of compositions: 334 [2023-11-06 22:10:15,938 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:10:15,945 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;@212d0fa5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:10:15,946 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-11-06 22:10:15,949 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:10:15,949 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 22:10:15,949 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:10:15,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:15,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:10:15,951 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:10:15,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:15,957 INFO L85 PathProgramCache]: Analyzing trace with hash 38480, now seen corresponding path program 1 times [2023-11-06 22:10:15,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:15,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810242572] [2023-11-06 22:10:15,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:15,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:16,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:16,351 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 22:10:16,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:16,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810242572] [2023-11-06 22:10:16,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810242572] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:16,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:16,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:10:16,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929159824] [2023-11-06 22:10:16,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:16,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:10:16,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:16,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:10:16,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:10:16,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 668 [2023-11-06 22:10:16,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 289.6666666666667) internal successors, (869), 3 states have internal predecessors, (869), 0 states have call successors, (0), 0 states 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 22:10:16,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:16,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 668 [2023-11-06 22:10:16,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:16,921 INFO L124 PetriNetUnfolderBase]: 1552/2200 cut-off events. [2023-11-06 22:10:16,922 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2023-11-06 22:10:16,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4471 conditions, 2200 events. 1552/2200 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10601 event pairs, 1039 based on Foata normal form. 0/1139 useless extension candidates. Maximal degree in co-relation 3838. Up to 2132 conditions per place. [2023-11-06 22:10:16,951 INFO L140 encePairwiseOnDemand]: 651/668 looper letters, 41 selfloop transitions, 9 changer transitions 0/56 dead transitions. [2023-11-06 22:10:16,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 56 transitions, 227 flow [2023-11-06 22:10:16,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:10:16,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:10:16,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 925 transitions. [2023-11-06 22:10:16,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4615768463073852 [2023-11-06 22:10:16,987 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 925 transitions. [2023-11-06 22:10:16,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 925 transitions. [2023-11-06 22:10:16,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:16,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 925 transitions. [2023-11-06 22:10:17,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 308.3333333333333) internal successors, (925), 3 states have internal predecessors, (925), 0 states have call successors, (0), 0 states 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 22:10:17,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 668.0) internal successors, (2672), 4 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states 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 22:10:17,016 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 668.0) internal successors, (2672), 4 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states 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 22:10:17,018 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 111 flow. Second operand 3 states and 925 transitions. [2023-11-06 22:10:17,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 56 transitions, 227 flow [2023-11-06 22:10:17,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 56 transitions, 218 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 22:10:17,033 INFO L231 Difference]: Finished difference. Result has 50 places, 56 transitions, 186 flow [2023-11-06 22:10:17,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=668, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=50, PETRI_TRANSITIONS=56} [2023-11-06 22:10:17,042 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2023-11-06 22:10:17,042 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 56 transitions, 186 flow [2023-11-06 22:10:17,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 289.6666666666667) internal successors, (869), 3 states have internal predecessors, (869), 0 states have call successors, (0), 0 states 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 22:10:17,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:17,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:10:17,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:10:17,044 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:10:17,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:17,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1195059, now seen corresponding path program 1 times [2023-11-06 22:10:17,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:17,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035633495] [2023-11-06 22:10:17,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:17,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:17,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:17,188 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 22:10:17,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:17,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035633495] [2023-11-06 22:10:17,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035633495] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:17,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:17,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:10:17,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291743802] [2023-11-06 22:10:17,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:17,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:10:17,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:17,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:10:17,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:10:17,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 668 [2023-11-06 22:10:17,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 56 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 290.0) internal successors, (870), 3 states have internal predecessors, (870), 0 states have call successors, (0), 0 states 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 22:10:17,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:17,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 668 [2023-11-06 22:10:17,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:17,653 INFO L124 PetriNetUnfolderBase]: 1552/2196 cut-off events. [2023-11-06 22:10:17,653 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-06 22:10:17,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4443 conditions, 2196 events. 1552/2196 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10575 event pairs, 1039 based on Foata normal form. 0/1145 useless extension candidates. Maximal degree in co-relation 4367. Up to 2116 conditions per place. [2023-11-06 22:10:17,674 INFO L140 encePairwiseOnDemand]: 662/668 looper letters, 43 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2023-11-06 22:10:17,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 52 transitions, 262 flow [2023-11-06 22:10:17,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:10:17,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:10:17,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 909 transitions. [2023-11-06 22:10:17,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4535928143712575 [2023-11-06 22:10:17,679 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 909 transitions. [2023-11-06 22:10:17,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 909 transitions. [2023-11-06 22:10:17,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:17,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 909 transitions. [2023-11-06 22:10:17,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 303.0) internal successors, (909), 3 states have internal predecessors, (909), 0 states have call successors, (0), 0 states 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 22:10:17,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 668.0) internal successors, (2672), 4 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states 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 22:10:17,694 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 668.0) internal successors, (2672), 4 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states 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 22:10:17,695 INFO L175 Difference]: Start difference. First operand has 50 places, 56 transitions, 186 flow. Second operand 3 states and 909 transitions. [2023-11-06 22:10:17,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 52 transitions, 262 flow [2023-11-06 22:10:17,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 52 transitions, 244 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:10:17,700 INFO L231 Difference]: Finished difference. Result has 46 places, 52 transitions, 158 flow [2023-11-06 22:10:17,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=668, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=46, PETRI_TRANSITIONS=52} [2023-11-06 22:10:17,702 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -5 predicate places. [2023-11-06 22:10:17,703 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 52 transitions, 158 flow [2023-11-06 22:10:17,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 290.0) internal successors, (870), 3 states have internal predecessors, (870), 0 states have call successors, (0), 0 states 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 22:10:17,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:17,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:10:17,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:10:17,709 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:10:17,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:17,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1195093, now seen corresponding path program 1 times [2023-11-06 22:10:17,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:17,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095129440] [2023-11-06 22:10:17,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:17,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:17,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:17,838 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 22:10:17,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:17,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095129440] [2023-11-06 22:10:17,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095129440] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:10:17,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662917945] [2023-11-06 22:10:17,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:17,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:17,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:17,845 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:17,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:10:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:17,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:10:17,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:18,028 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 22:10:18,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:10:18,054 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 22:10:18,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662917945] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:10:18,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:10:18,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-06 22:10:18,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025443989] [2023-11-06 22:10:18,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:10:18,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:10:18,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:18,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:10:18,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:10:18,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 668 [2023-11-06 22:10:18,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 52 transitions, 158 flow. Second operand has 7 states, 7 states have (on average 290.14285714285717) internal successors, (2031), 7 states have internal predecessors, (2031), 0 states have call successors, (0), 0 states 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 22:10:18,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:18,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 668 [2023-11-06 22:10:18,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:18,675 INFO L124 PetriNetUnfolderBase]: 1564/2220 cut-off events. [2023-11-06 22:10:18,675 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-06 22:10:18,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4512 conditions, 2220 events. 1564/2220 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10736 event pairs, 1039 based on Foata normal form. 0/1156 useless extension candidates. Maximal degree in co-relation 4367. Up to 2131 conditions per place. [2023-11-06 22:10:18,697 INFO L140 encePairwiseOnDemand]: 655/668 looper letters, 37 selfloop transitions, 33 changer transitions 0/76 dead transitions. [2023-11-06 22:10:18,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 76 transitions, 400 flow [2023-11-06 22:10:18,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:10:18,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:10:18,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1816 transitions. [2023-11-06 22:10:18,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4530938123752495 [2023-11-06 22:10:18,706 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1816 transitions. [2023-11-06 22:10:18,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1816 transitions. [2023-11-06 22:10:18,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:18,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1816 transitions. [2023-11-06 22:10:18,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 302.6666666666667) internal successors, (1816), 6 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states 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 22:10:18,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 668.0) internal successors, (4676), 7 states have internal predecessors, (4676), 0 states have call successors, (0), 0 states 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 22:10:18,731 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 668.0) internal successors, (4676), 7 states have internal predecessors, (4676), 0 states have call successors, (0), 0 states 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 22:10:18,732 INFO L175 Difference]: Start difference. First operand has 46 places, 52 transitions, 158 flow. Second operand 6 states and 1816 transitions. [2023-11-06 22:10:18,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 76 transitions, 400 flow [2023-11-06 22:10:18,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 76 transitions, 388 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:10:18,736 INFO L231 Difference]: Finished difference. Result has 52 places, 76 transitions, 384 flow [2023-11-06 22:10:18,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=668, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=384, PETRI_PLACES=52, PETRI_TRANSITIONS=76} [2023-11-06 22:10:18,737 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2023-11-06 22:10:18,738 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 76 transitions, 384 flow [2023-11-06 22:10:18,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 290.14285714285717) internal successors, (2031), 7 states have internal predecessors, (2031), 0 states have call successors, (0), 0 states 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 22:10:18,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:18,740 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 22:10:18,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:18,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:18,947 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:10:18,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:18,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1244428082, now seen corresponding path program 2 times [2023-11-06 22:10:18,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:18,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440886985] [2023-11-06 22:10:18,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:18,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:19,088 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 22:10:19,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:19,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440886985] [2023-11-06 22:10:19,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440886985] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:10:19,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636737397] [2023-11-06 22:10:19,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:10:19,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:19,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:19,091 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:19,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:10:19,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:10:19,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:10:19,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:10:19,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:19,206 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 22:10:19,206 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:10:19,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636737397] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:19,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:10:19,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-06 22:10:19,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79944417] [2023-11-06 22:10:19,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:19,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:10:19,208 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=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:10:19,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 668 [2023-11-06 22:10:19,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 76 transitions, 384 flow. Second operand has 3 states, 3 states have (on average 298.0) internal successors, (894), 3 states have internal predecessors, (894), 0 states have call successors, (0), 0 states 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 22:10:19,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:19,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 668 [2023-11-06 22:10:19,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:19,570 INFO L124 PetriNetUnfolderBase]: 1564/2219 cut-off events. [2023-11-06 22:10:19,570 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-06 22:10:19,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4577 conditions, 2219 events. 1564/2219 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 10706 event pairs, 1039 based on Foata normal form. 1/1167 useless extension candidates. Maximal degree in co-relation 4460. Up to 2152 conditions per place. [2023-11-06 22:10:19,591 INFO L140 encePairwiseOnDemand]: 665/668 looper letters, 63 selfloop transitions, 6 changer transitions 0/75 dead transitions. [2023-11-06 22:10:19,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 75 transitions, 512 flow [2023-11-06 22:10:19,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:10:19,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:10:19,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 929 transitions. [2023-11-06 22:10:19,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46357285429141715 [2023-11-06 22:10:19,596 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 929 transitions. [2023-11-06 22:10:19,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 929 transitions. [2023-11-06 22:10:19,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:19,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 929 transitions. [2023-11-06 22:10:19,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 0 states have call successors, (0), 0 states 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 22:10:19,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 668.0) internal successors, (2672), 4 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states 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 22:10:19,655 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 668.0) internal successors, (2672), 4 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states 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 22:10:19,655 INFO L175 Difference]: Start difference. First operand has 52 places, 76 transitions, 384 flow. Second operand 3 states and 929 transitions. [2023-11-06 22:10:19,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 75 transitions, 512 flow [2023-11-06 22:10:19,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 75 transitions, 464 flow, removed 15 selfloop flow, removed 1 redundant places. [2023-11-06 22:10:19,661 INFO L231 Difference]: Finished difference. Result has 52 places, 75 transitions, 338 flow [2023-11-06 22:10:19,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=668, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=338, PETRI_PLACES=52, PETRI_TRANSITIONS=75} [2023-11-06 22:10:19,664 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2023-11-06 22:10:19,664 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 75 transitions, 338 flow [2023-11-06 22:10:19,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 298.0) internal successors, (894), 3 states have internal predecessors, (894), 0 states have call successors, (0), 0 states 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 22:10:19,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:19,666 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-11-06 22:10:19,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:19,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:19,873 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:10:19,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:19,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1122127419, now seen corresponding path program 1 times [2023-11-06 22:10:19,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:19,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097150038] [2023-11-06 22:10:19,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:19,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:20,038 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:10:20,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:20,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097150038] [2023-11-06 22:10:20,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097150038] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:20,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:20,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:10:20,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618385607] [2023-11-06 22:10:20,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:20,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:10:20,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:20,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:10:20,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:10:20,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 668 [2023-11-06 22:10:20,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 75 transitions, 338 flow. Second operand has 4 states, 4 states have (on average 280.25) internal successors, (1121), 4 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states 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 22:10:20,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:20,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 668 [2023-11-06 22:10:20,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:20,518 INFO L124 PetriNetUnfolderBase]: 1564/2222 cut-off events. [2023-11-06 22:10:20,518 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-11-06 22:10:20,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4566 conditions, 2222 events. 1564/2222 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 10710 event pairs, 1039 based on Foata normal form. 3/1176 useless extension candidates. Maximal degree in co-relation 4461. Up to 2143 conditions per place. [2023-11-06 22:10:20,539 INFO L140 encePairwiseOnDemand]: 659/668 looper letters, 50 selfloop transitions, 22 changer transitions 0/78 dead transitions. [2023-11-06 22:10:20,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 78 transitions, 495 flow [2023-11-06 22:10:20,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:10:20,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:10:20,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1167 transitions. [2023-11-06 22:10:20,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43675149700598803 [2023-11-06 22:10:20,545 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1167 transitions. [2023-11-06 22:10:20,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1167 transitions. [2023-11-06 22:10:20,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:20,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1167 transitions. [2023-11-06 22:10:20,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 291.75) internal successors, (1167), 4 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states 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 22:10:20,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 668.0) internal successors, (3340), 5 states have internal predecessors, (3340), 0 states have call successors, (0), 0 states 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 22:10:20,561 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 668.0) internal successors, (3340), 5 states have internal predecessors, (3340), 0 states have call successors, (0), 0 states 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 22:10:20,561 INFO L175 Difference]: Start difference. First operand has 52 places, 75 transitions, 338 flow. Second operand 4 states and 1167 transitions. [2023-11-06 22:10:20,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 78 transitions, 495 flow [2023-11-06 22:10:20,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 78 transitions, 483 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:10:20,567 INFO L231 Difference]: Finished difference. Result has 54 places, 78 transitions, 408 flow [2023-11-06 22:10:20,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=668, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=408, PETRI_PLACES=54, PETRI_TRANSITIONS=78} [2023-11-06 22:10:20,571 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2023-11-06 22:10:20,571 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 78 transitions, 408 flow [2023-11-06 22:10:20,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 280.25) internal successors, (1121), 4 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states 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 22:10:20,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:20,578 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-11-06 22:10:20,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:10:20,579 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:10:20,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:20,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1200890312, now seen corresponding path program 1 times [2023-11-06 22:10:20,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:20,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135286855] [2023-11-06 22:10:20,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:20,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:20,724 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:10:20,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:20,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135286855] [2023-11-06 22:10:20,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135286855] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:10:20,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130046976] [2023-11-06 22:10:20,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:20,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:20,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:20,727 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:20,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:10:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:20,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:10:20,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:20,919 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:10:20,919 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:10:20,992 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:10:20,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130046976] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:10:20,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:10:20,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 15 [2023-11-06 22:10:20,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182691331] [2023-11-06 22:10:20,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:10:20,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:10:20,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:20,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:10:20,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:10:21,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 668 [2023-11-06 22:10:21,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 78 transitions, 408 flow. Second operand has 15 states, 15 states have (on average 276.3333333333333) internal successors, (4145), 15 states have internal predecessors, (4145), 0 states have call successors, (0), 0 states 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 22:10:21,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:21,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 668 [2023-11-06 22:10:21,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:22,761 INFO L124 PetriNetUnfolderBase]: 3089/4394 cut-off events. [2023-11-06 22:10:22,761 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2023-11-06 22:10:22,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8990 conditions, 4394 events. 3089/4394 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 22334 event pairs, 2068 based on Foata normal form. 6/2357 useless extension candidates. Maximal degree in co-relation 8848. Up to 2118 conditions per place. [2023-11-06 22:10:22,801 INFO L140 encePairwiseOnDemand]: 656/668 looper letters, 57 selfloop transitions, 57 changer transitions 0/120 dead transitions. [2023-11-06 22:10:22,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 120 transitions, 818 flow [2023-11-06 22:10:22,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:10:22,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:10:22,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3420 transitions. [2023-11-06 22:10:22,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42664670658682635 [2023-11-06 22:10:22,814 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3420 transitions. [2023-11-06 22:10:22,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3420 transitions. [2023-11-06 22:10:22,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:22,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3420 transitions. [2023-11-06 22:10:22,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 285.0) internal successors, (3420), 12 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states 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 22:10:22,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 668.0) internal successors, (8684), 13 states have internal predecessors, (8684), 0 states have call successors, (0), 0 states 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 22:10:22,846 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 668.0) internal successors, (8684), 13 states have internal predecessors, (8684), 0 states have call successors, (0), 0 states 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 22:10:22,846 INFO L175 Difference]: Start difference. First operand has 54 places, 78 transitions, 408 flow. Second operand 12 states and 3420 transitions. [2023-11-06 22:10:22,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 120 transitions, 818 flow [2023-11-06 22:10:22,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 120 transitions, 780 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-11-06 22:10:22,852 INFO L231 Difference]: Finished difference. Result has 65 places, 95 transitions, 632 flow [2023-11-06 22:10:22,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=668, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=632, PETRI_PLACES=65, PETRI_TRANSITIONS=95} [2023-11-06 22:10:22,853 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 14 predicate places. [2023-11-06 22:10:22,853 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 95 transitions, 632 flow [2023-11-06 22:10:22,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 276.3333333333333) internal successors, (4145), 15 states have internal predecessors, (4145), 0 states have call successors, (0), 0 states 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 22:10:22,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:22,856 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2023-11-06 22:10:22,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:23,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 22:10:23,062 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:10:23,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:23,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1904904369, now seen corresponding path program 2 times [2023-11-06 22:10:23,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:23,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915624978] [2023-11-06 22:10:23,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:23,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:23,260 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:10:23,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:23,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915624978] [2023-11-06 22:10:23,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915624978] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:10:23,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032716820] [2023-11-06 22:10:23,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:10:23,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:23,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:23,263 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:23,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:10:23,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:10:23,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:10:23,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:10:23,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:23,407 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 22:10:23,407 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:10:23,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032716820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:23,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:10:23,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-11-06 22:10:23,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352635979] [2023-11-06 22:10:23,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:23,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:10:23,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:23,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:10:23,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:10:23,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 668 [2023-11-06 22:10:23,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 95 transitions, 632 flow. Second operand has 4 states, 4 states have (on average 296.25) internal successors, (1185), 4 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states 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 22:10:23,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:23,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 668 [2023-11-06 22:10:23,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:24,083 INFO L124 PetriNetUnfolderBase]: 3114/4411 cut-off events. [2023-11-06 22:10:24,083 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-11-06 22:10:24,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9075 conditions, 4411 events. 3114/4411 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 22350 event pairs, 2078 based on Foata normal form. 3/2322 useless extension candidates. Maximal degree in co-relation 8957. Up to 4235 conditions per place. [2023-11-06 22:10:24,116 INFO L140 encePairwiseOnDemand]: 663/668 looper letters, 76 selfloop transitions, 10 changer transitions 0/92 dead transitions. [2023-11-06 22:10:24,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 92 transitions, 768 flow [2023-11-06 22:10:24,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:10:24,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:10:24,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1217 transitions. [2023-11-06 22:10:24,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4554640718562874 [2023-11-06 22:10:24,121 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1217 transitions. [2023-11-06 22:10:24,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1217 transitions. [2023-11-06 22:10:24,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:24,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1217 transitions. [2023-11-06 22:10:24,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 304.25) internal successors, (1217), 4 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states 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 22:10:24,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 668.0) internal successors, (3340), 5 states have internal predecessors, (3340), 0 states have call successors, (0), 0 states 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 22:10:24,133 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 668.0) internal successors, (3340), 5 states have internal predecessors, (3340), 0 states have call successors, (0), 0 states 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 22:10:24,133 INFO L175 Difference]: Start difference. First operand has 65 places, 95 transitions, 632 flow. Second operand 4 states and 1217 transitions. [2023-11-06 22:10:24,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 92 transitions, 768 flow [2023-11-06 22:10:24,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 92 transitions, 588 flow, removed 15 selfloop flow, removed 9 redundant places. [2023-11-06 22:10:24,138 INFO L231 Difference]: Finished difference. Result has 55 places, 92 transitions, 436 flow [2023-11-06 22:10:24,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=668, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=436, PETRI_PLACES=55, PETRI_TRANSITIONS=92} [2023-11-06 22:10:24,139 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2023-11-06 22:10:24,139 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 92 transitions, 436 flow [2023-11-06 22:10:24,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 296.25) internal successors, (1185), 4 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states 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 22:10:24,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:24,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:24,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:24,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-06 22:10:24,347 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:10:24,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:24,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1068038751, now seen corresponding path program 1 times [2023-11-06 22:10:24,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:24,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122427473] [2023-11-06 22:10:24,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:24,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:24,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:24,431 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 22:10:24,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:24,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122427473] [2023-11-06 22:10:24,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122427473] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:24,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:24,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:10:24,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700128611] [2023-11-06 22:10:24,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:24,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:10:24,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:24,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:10:24,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:10:24,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 668 [2023-11-06 22:10:24,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 92 transitions, 436 flow. Second operand has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states 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 22:10:24,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:24,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 668 [2023-11-06 22:10:24,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:25,097 INFO L124 PetriNetUnfolderBase]: 4138/6037 cut-off events. [2023-11-06 22:10:25,097 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2023-11-06 22:10:25,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12064 conditions, 6037 events. 4138/6037 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 33286 event pairs, 2160 based on Foata normal form. 0/3491 useless extension candidates. Maximal degree in co-relation 11972. Up to 4422 conditions per place. [2023-11-06 22:10:25,133 INFO L140 encePairwiseOnDemand]: 663/668 looper letters, 102 selfloop transitions, 3 changer transitions 0/110 dead transitions. [2023-11-06 22:10:25,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 110 transitions, 685 flow [2023-11-06 22:10:25,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:10:25,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:10:25,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 973 transitions. [2023-11-06 22:10:25,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48552894211576847 [2023-11-06 22:10:25,137 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 973 transitions. [2023-11-06 22:10:25,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 973 transitions. [2023-11-06 22:10:25,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:25,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 973 transitions. [2023-11-06 22:10:25,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 324.3333333333333) internal successors, (973), 3 states have internal predecessors, (973), 0 states have call successors, (0), 0 states 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 22:10:25,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 668.0) internal successors, (2672), 4 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states 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 22:10:25,146 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 668.0) internal successors, (2672), 4 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states 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 22:10:25,147 INFO L175 Difference]: Start difference. First operand has 55 places, 92 transitions, 436 flow. Second operand 3 states and 973 transitions. [2023-11-06 22:10:25,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 110 transitions, 685 flow [2023-11-06 22:10:25,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 110 transitions, 674 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:10:25,151 INFO L231 Difference]: Finished difference. Result has 56 places, 94 transitions, 446 flow [2023-11-06 22:10:25,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=668, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=446, PETRI_PLACES=56, PETRI_TRANSITIONS=94} [2023-11-06 22:10:25,152 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 5 predicate places. [2023-11-06 22:10:25,153 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 94 transitions, 446 flow [2023-11-06 22:10:25,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states 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 22:10:25,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:25,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:25,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:10:25,154 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:10:25,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:25,154 INFO L85 PathProgramCache]: Analyzing trace with hash -314178409, now seen corresponding path program 1 times [2023-11-06 22:10:25,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:25,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031058128] [2023-11-06 22:10:25,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:25,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:25,279 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 22:10:25,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:25,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031058128] [2023-11-06 22:10:25,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031058128] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:25,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:25,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:10:25,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855616499] [2023-11-06 22:10:25,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:25,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:10:25,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:25,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:10:25,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:10:25,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 668 [2023-11-06 22:10:25,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 94 transitions, 446 flow. Second operand has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 0 states have call successors, (0), 0 states 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 22:10:25,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:25,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 668 [2023-11-06 22:10:25,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:26,166 INFO L124 PetriNetUnfolderBase]: 4806/6911 cut-off events. [2023-11-06 22:10:26,166 INFO L125 PetriNetUnfolderBase]: For 963/1183 co-relation queries the response was YES. [2023-11-06 22:10:26,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15676 conditions, 6911 events. 4806/6911 cut-off events. For 963/1183 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 36148 event pairs, 2158 based on Foata normal form. 220/4799 useless extension candidates. Maximal degree in co-relation 15583. Up to 5018 conditions per place. [2023-11-06 22:10:26,211 INFO L140 encePairwiseOnDemand]: 663/668 looper letters, 106 selfloop transitions, 3 changer transitions 0/114 dead transitions. [2023-11-06 22:10:26,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 114 transitions, 721 flow [2023-11-06 22:10:26,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:10:26,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:10:26,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 973 transitions. [2023-11-06 22:10:26,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48552894211576847 [2023-11-06 22:10:26,216 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 973 transitions. [2023-11-06 22:10:26,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 973 transitions. [2023-11-06 22:10:26,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:26,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 973 transitions. [2023-11-06 22:10:26,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 324.3333333333333) internal successors, (973), 3 states have internal predecessors, (973), 0 states have call successors, (0), 0 states 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 22:10:26,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 668.0) internal successors, (2672), 4 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states 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 22:10:26,226 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 668.0) internal successors, (2672), 4 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states 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 22:10:26,226 INFO L175 Difference]: Start difference. First operand has 56 places, 94 transitions, 446 flow. Second operand 3 states and 973 transitions. [2023-11-06 22:10:26,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 114 transitions, 721 flow [2023-11-06 22:10:26,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 114 transitions, 716 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:10:26,231 INFO L231 Difference]: Finished difference. Result has 58 places, 96 transitions, 464 flow [2023-11-06 22:10:26,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=668, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=58, PETRI_TRANSITIONS=96} [2023-11-06 22:10:26,232 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2023-11-06 22:10:26,233 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 96 transitions, 464 flow [2023-11-06 22:10:26,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 0 states have call successors, (0), 0 states 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 22:10:26,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:26,234 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:26,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:10:26,234 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:10:26,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:26,235 INFO L85 PathProgramCache]: Analyzing trace with hash 827559648, now seen corresponding path program 1 times [2023-11-06 22:10:26,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:26,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439746127] [2023-11-06 22:10:26,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:26,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:26,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:26,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:26,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439746127] [2023-11-06 22:10:26,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439746127] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:10:26,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870503443] [2023-11-06 22:10:26,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:26,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:26,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:26,327 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:26,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:10:26,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:26,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:10:26,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:26,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:10:26,516 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:10:26,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870503443] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:26,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:10:26,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2023-11-06 22:10:26,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128520516] [2023-11-06 22:10:26,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:26,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:10:26,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:26,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:10:26,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:10:26,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 668 [2023-11-06 22:10:26,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 96 transitions, 464 flow. Second operand has 5 states, 5 states have (on average 281.2) internal successors, (1406), 5 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states 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 22:10:26,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:26,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 668 [2023-11-06 22:10:26,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:27,817 INFO L124 PetriNetUnfolderBase]: 5336/7762 cut-off events. [2023-11-06 22:10:27,817 INFO L125 PetriNetUnfolderBase]: For 2164/2439 co-relation queries the response was YES. [2023-11-06 22:10:27,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19409 conditions, 7762 events. 5336/7762 cut-off events. For 2164/2439 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 44694 event pairs, 3649 based on Foata normal form. 375/6007 useless extension candidates. Maximal degree in co-relation 19315. Up to 6142 conditions per place. [2023-11-06 22:10:27,875 INFO L140 encePairwiseOnDemand]: 656/668 looper letters, 97 selfloop transitions, 35 changer transitions 0/137 dead transitions. [2023-11-06 22:10:27,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 137 transitions, 851 flow [2023-11-06 22:10:27,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:10:27,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:10:27,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1758 transitions. [2023-11-06 22:10:27,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43862275449101795 [2023-11-06 22:10:27,883 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1758 transitions. [2023-11-06 22:10:27,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1758 transitions. [2023-11-06 22:10:27,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:27,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1758 transitions. [2023-11-06 22:10:27,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 293.0) internal successors, (1758), 6 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states 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 22:10:27,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 668.0) internal successors, (4676), 7 states have internal predecessors, (4676), 0 states have call successors, (0), 0 states 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 22:10:27,899 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 668.0) internal successors, (4676), 7 states have internal predecessors, (4676), 0 states have call successors, (0), 0 states 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 22:10:27,899 INFO L175 Difference]: Start difference. First operand has 58 places, 96 transitions, 464 flow. Second operand 6 states and 1758 transitions. [2023-11-06 22:10:27,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 137 transitions, 851 flow [2023-11-06 22:10:27,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 137 transitions, 844 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:10:27,906 INFO L231 Difference]: Finished difference. Result has 64 places, 98 transitions, 552 flow [2023-11-06 22:10:27,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=668, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=552, PETRI_PLACES=64, PETRI_TRANSITIONS=98} [2023-11-06 22:10:27,907 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2023-11-06 22:10:27,908 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 98 transitions, 552 flow [2023-11-06 22:10:27,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 281.2) internal successors, (1406), 5 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states 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 22:10:27,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:27,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:27,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:28,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 22:10:28,114 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:10:28,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:28,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1368265533, now seen corresponding path program 1 times [2023-11-06 22:10:28,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:28,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193271184] [2023-11-06 22:10:28,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:28,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:28,294 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 22:10:28,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:28,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193271184] [2023-11-06 22:10:28,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193271184] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:28,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:28,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:10:28,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345159028] [2023-11-06 22:10:28,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:28,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:10:28,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:28,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:10:28,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:10:28,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 668 [2023-11-06 22:10:28,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 98 transitions, 552 flow. Second operand has 5 states, 5 states have (on average 280.6) internal successors, (1403), 5 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states 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 22:10:28,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:28,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 668 [2023-11-06 22:10:28,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:29,560 INFO L124 PetriNetUnfolderBase]: 4676/6867 cut-off events. [2023-11-06 22:10:29,561 INFO L125 PetriNetUnfolderBase]: For 3199/3892 co-relation queries the response was YES. [2023-11-06 22:10:29,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17437 conditions, 6867 events. 4676/6867 cut-off events. For 3199/3892 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 39939 event pairs, 2821 based on Foata normal form. 693/5852 useless extension candidates. Maximal degree in co-relation 17335. Up to 4930 conditions per place. [2023-11-06 22:10:29,619 INFO L140 encePairwiseOnDemand]: 655/668 looper letters, 110 selfloop transitions, 36 changer transitions 0/152 dead transitions. [2023-11-06 22:10:29,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 152 transitions, 1020 flow [2023-11-06 22:10:29,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:10:29,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:10:29,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2040 transitions. [2023-11-06 22:10:29,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43627031650983744 [2023-11-06 22:10:29,629 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2040 transitions. [2023-11-06 22:10:29,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2040 transitions. [2023-11-06 22:10:29,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:29,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2040 transitions. [2023-11-06 22:10:29,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 291.42857142857144) internal successors, (2040), 7 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states 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 22:10:29,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 668.0) internal successors, (5344), 8 states have internal predecessors, (5344), 0 states have call successors, (0), 0 states 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 22:10:29,650 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 668.0) internal successors, (5344), 8 states have internal predecessors, (5344), 0 states have call successors, (0), 0 states 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 22:10:29,650 INFO L175 Difference]: Start difference. First operand has 64 places, 98 transitions, 552 flow. Second operand 7 states and 2040 transitions. [2023-11-06 22:10:29,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 152 transitions, 1020 flow [2023-11-06 22:10:29,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 152 transitions, 957 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:10:29,658 INFO L231 Difference]: Finished difference. Result has 70 places, 101 transitions, 608 flow [2023-11-06 22:10:29,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=668, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=608, PETRI_PLACES=70, PETRI_TRANSITIONS=101} [2023-11-06 22:10:29,659 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 19 predicate places. [2023-11-06 22:10:29,660 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 101 transitions, 608 flow [2023-11-06 22:10:29,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 280.6) internal successors, (1403), 5 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states 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 22:10:29,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:29,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:29,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:10:29,661 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:10:29,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:29,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1368265531, now seen corresponding path program 1 times [2023-11-06 22:10:29,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:29,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955318694] [2023-11-06 22:10:29,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:29,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:29,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:29,759 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 22:10:29,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:29,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955318694] [2023-11-06 22:10:29,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955318694] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:29,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:29,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:10:29,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831876880] [2023-11-06 22:10:29,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:29,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:10:29,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:29,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:10:29,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:10:29,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 668 [2023-11-06 22:10:29,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 101 transitions, 608 flow. Second operand has 4 states, 4 states have (on average 307.25) internal successors, (1229), 4 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states 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 22:10:29,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:29,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 668 [2023-11-06 22:10:29,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:30,591 INFO L124 PetriNetUnfolderBase]: 3974/5997 cut-off events. [2023-11-06 22:10:30,591 INFO L125 PetriNetUnfolderBase]: For 3395/3972 co-relation queries the response was YES. [2023-11-06 22:10:30,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15954 conditions, 5997 events. 3974/5997 cut-off events. For 3395/3972 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 35144 event pairs, 1271 based on Foata normal form. 849/5792 useless extension candidates. Maximal degree in co-relation 15844. Up to 3058 conditions per place. [2023-11-06 22:10:30,641 INFO L140 encePairwiseOnDemand]: 664/668 looper letters, 102 selfloop transitions, 11 changer transitions 0/119 dead transitions. [2023-11-06 22:10:30,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 119 transitions, 901 flow [2023-11-06 22:10:30,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:10:30,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:10:30,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1266 transitions. [2023-11-06 22:10:30,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47380239520958084 [2023-11-06 22:10:30,647 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1266 transitions. [2023-11-06 22:10:30,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1266 transitions. [2023-11-06 22:10:30,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:30,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1266 transitions. [2023-11-06 22:10:30,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 316.5) internal successors, (1266), 4 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states 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 22:10:30,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 668.0) internal successors, (3340), 5 states have internal predecessors, (3340), 0 states have call successors, (0), 0 states 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 22:10:30,659 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 668.0) internal successors, (3340), 5 states have internal predecessors, (3340), 0 states have call successors, (0), 0 states 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 22:10:30,659 INFO L175 Difference]: Start difference. First operand has 70 places, 101 transitions, 608 flow. Second operand 4 states and 1266 transitions. [2023-11-06 22:10:30,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 119 transitions, 901 flow [2023-11-06 22:10:30,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 119 transitions, 813 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:10:30,723 INFO L231 Difference]: Finished difference. Result has 67 places, 99 transitions, 533 flow [2023-11-06 22:10:30,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=668, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=533, PETRI_PLACES=67, PETRI_TRANSITIONS=99} [2023-11-06 22:10:30,725 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 16 predicate places. [2023-11-06 22:10:30,725 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 99 transitions, 533 flow [2023-11-06 22:10:30,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 307.25) internal successors, (1229), 4 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states 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 22:10:30,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:30,726 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:30,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:10:30,726 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:10:30,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:30,728 INFO L85 PathProgramCache]: Analyzing trace with hash -952536477, now seen corresponding path program 1 times [2023-11-06 22:10:30,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:30,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311294149] [2023-11-06 22:10:30,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:30,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:30,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:30,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:30,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:30,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311294149] [2023-11-06 22:10:30,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311294149] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:10:30,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568957193] [2023-11-06 22:10:30,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:30,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:30,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:30,813 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:30,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:10:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:30,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:10:30,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:31,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:10:31,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:10:31,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568957193] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:31,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:10:31,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 8 [2023-11-06 22:10:31,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024533765] [2023-11-06 22:10:31,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:31,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:10:31,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:31,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:10:31,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:10:31,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 668 [2023-11-06 22:10:31,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 99 transitions, 533 flow. Second operand has 6 states, 6 states have (on average 278.1666666666667) internal successors, (1669), 6 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states 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 22:10:31,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:31,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 668 [2023-11-06 22:10:31,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:32,116 INFO L124 PetriNetUnfolderBase]: 4310/6209 cut-off events. [2023-11-06 22:10:32,116 INFO L125 PetriNetUnfolderBase]: For 3517/3792 co-relation queries the response was YES. [2023-11-06 22:10:32,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17433 conditions, 6209 events. 4310/6209 cut-off events. For 3517/3792 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 33577 event pairs, 2929 based on Foata normal form. 303/5368 useless extension candidates. Maximal degree in co-relation 17333. Up to 5690 conditions per place. [2023-11-06 22:10:32,154 INFO L140 encePairwiseOnDemand]: 656/668 looper letters, 55 selfloop transitions, 25 changer transitions 36/121 dead transitions. [2023-11-06 22:10:32,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 121 transitions, 838 flow [2023-11-06 22:10:32,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:10:32,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:10:32,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1727 transitions. [2023-11-06 22:10:32,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4308882235528942 [2023-11-06 22:10:32,162 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1727 transitions. [2023-11-06 22:10:32,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1727 transitions. [2023-11-06 22:10:32,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:32,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1727 transitions. [2023-11-06 22:10:32,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 287.8333333333333) internal successors, (1727), 6 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states 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 22:10:32,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 668.0) internal successors, (4676), 7 states have internal predecessors, (4676), 0 states have call successors, (0), 0 states 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 22:10:32,176 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 668.0) internal successors, (4676), 7 states have internal predecessors, (4676), 0 states have call successors, (0), 0 states 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 22:10:32,176 INFO L175 Difference]: Start difference. First operand has 67 places, 99 transitions, 533 flow. Second operand 6 states and 1727 transitions. [2023-11-06 22:10:32,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 121 transitions, 838 flow [2023-11-06 22:10:32,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 121 transitions, 812 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:10:32,195 INFO L231 Difference]: Finished difference. Result has 71 places, 85 transitions, 467 flow [2023-11-06 22:10:32,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=668, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=467, PETRI_PLACES=71, PETRI_TRANSITIONS=85} [2023-11-06 22:10:32,196 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 20 predicate places. [2023-11-06 22:10:32,196 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 85 transitions, 467 flow [2023-11-06 22:10:32,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 278.1666666666667) internal successors, (1669), 6 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states 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 22:10:32,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:32,197 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:32,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-06 22:10:32,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 22:10:32,402 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:10:32,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:32,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1230451213, now seen corresponding path program 1 times [2023-11-06 22:10:32,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:32,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35911135] [2023-11-06 22:10:32,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:32,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:32,499 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:10:32,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:32,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35911135] [2023-11-06 22:10:32,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35911135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:32,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:32,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:10:32,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859295029] [2023-11-06 22:10:32,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:32,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:10:32,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:32,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:10:32,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:10:32,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 668 [2023-11-06 22:10:32,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 85 transitions, 467 flow. Second operand has 3 states, 3 states have (on average 311.0) internal successors, (933), 3 states have internal predecessors, (933), 0 states have call successors, (0), 0 states 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 22:10:32,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:32,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 668 [2023-11-06 22:10:32,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:33,064 INFO L124 PetriNetUnfolderBase]: 3717/5383 cut-off events. [2023-11-06 22:10:33,064 INFO L125 PetriNetUnfolderBase]: For 3684/3858 co-relation queries the response was YES. [2023-11-06 22:10:33,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15109 conditions, 5383 events. 3717/5383 cut-off events. For 3684/3858 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 27839 event pairs, 1528 based on Foata normal form. 174/4749 useless extension candidates. Maximal degree in co-relation 15003. Up to 3334 conditions per place. [2023-11-06 22:10:33,094 INFO L140 encePairwiseOnDemand]: 665/668 looper letters, 92 selfloop transitions, 3 changer transitions 0/100 dead transitions. [2023-11-06 22:10:33,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 100 transitions, 710 flow [2023-11-06 22:10:33,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:10:33,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:10:33,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 966 transitions. [2023-11-06 22:10:33,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4820359281437126 [2023-11-06 22:10:33,102 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 966 transitions. [2023-11-06 22:10:33,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 966 transitions. [2023-11-06 22:10:33,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:33,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 966 transitions. [2023-11-06 22:10:33,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 0 states have call successors, (0), 0 states 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 22:10:33,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 668.0) internal successors, (2672), 4 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states 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 22:10:33,114 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 668.0) internal successors, (2672), 4 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states 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 22:10:33,114 INFO L175 Difference]: Start difference. First operand has 71 places, 85 transitions, 467 flow. Second operand 3 states and 966 transitions. [2023-11-06 22:10:33,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 100 transitions, 710 flow [2023-11-06 22:10:33,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 100 transitions, 582 flow, removed 14 selfloop flow, removed 10 redundant places. [2023-11-06 22:10:33,151 INFO L231 Difference]: Finished difference. Result has 54 places, 84 transitions, 351 flow [2023-11-06 22:10:33,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=668, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=351, PETRI_PLACES=54, PETRI_TRANSITIONS=84} [2023-11-06 22:10:33,153 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2023-11-06 22:10:33,153 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 84 transitions, 351 flow [2023-11-06 22:10:33,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.0) internal successors, (933), 3 states have internal predecessors, (933), 0 states have call successors, (0), 0 states 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 22:10:33,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:33,154 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:33,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:10:33,154 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:10:33,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:33,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1230451212, now seen corresponding path program 1 times [2023-11-06 22:10:33,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:33,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745525119] [2023-11-06 22:10:33,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:33,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:33,263 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:10:33,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:33,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745525119] [2023-11-06 22:10:33,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745525119] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:10:33,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576145099] [2023-11-06 22:10:33,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:33,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:33,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:33,266 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:33,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:10:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:33,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:10:33,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:33,490 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:10:33,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:10:33,576 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:10:33,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576145099] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:10:33,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:10:33,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 13 [2023-11-06 22:10:33,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646683677] [2023-11-06 22:10:33,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:10:33,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:10:33,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:33,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:10:33,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:10:34,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 668 [2023-11-06 22:10:34,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 84 transitions, 351 flow. Second operand has 13 states, 13 states have (on average 272.84615384615387) internal successors, (3547), 13 states have internal predecessors, (3547), 0 states have call successors, (0), 0 states 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: 270 of 668 [2023-11-06 22:10:34,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:35,328 INFO L124 PetriNetUnfolderBase]: 3991/5827 cut-off events. [2023-11-06 22:10:35,329 INFO L125 PetriNetUnfolderBase]: For 2302/2498 co-relation queries the response was YES. [2023-11-06 22:10:35,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14507 conditions, 5827 events. 3991/5827 cut-off events. For 2302/2498 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 30613 event pairs, 1347 based on Foata normal form. 282/4823 useless extension candidates. Maximal degree in co-relation 14420. Up to 1795 conditions per place. [2023-11-06 22:10:35,370 INFO L140 encePairwiseOnDemand]: 654/668 looper letters, 133 selfloop transitions, 40 changer transitions 0/178 dead transitions. [2023-11-06 22:10:35,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 178 transitions, 983 flow [2023-11-06 22:10:35,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:10:35,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 22:10:35,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3109 transitions. [2023-11-06 22:10:35,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42310832879695154 [2023-11-06 22:10:35,386 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3109 transitions. [2023-11-06 22:10:35,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3109 transitions. [2023-11-06 22:10:35,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:35,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3109 transitions. [2023-11-06 22:10:35,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 282.6363636363636) internal successors, (3109), 11 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states 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 22:10:35,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 668.0) internal successors, (8016), 12 states have internal predecessors, (8016), 0 states have call successors, (0), 0 states 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 22:10:35,421 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 668.0) internal successors, (8016), 12 states have internal predecessors, (8016), 0 states have call successors, (0), 0 states 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 22:10:35,422 INFO L175 Difference]: Start difference. First operand has 54 places, 84 transitions, 351 flow. Second operand 11 states and 3109 transitions. [2023-11-06 22:10:35,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 178 transitions, 983 flow [2023-11-06 22:10:35,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 178 transitions, 969 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:10:35,433 INFO L231 Difference]: Finished difference. Result has 64 places, 90 transitions, 462 flow [2023-11-06 22:10:35,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=668, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=462, PETRI_PLACES=64, PETRI_TRANSITIONS=90} [2023-11-06 22:10:35,434 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2023-11-06 22:10:35,434 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 90 transitions, 462 flow [2023-11-06 22:10:35,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 272.84615384615387) internal successors, (3547), 13 states have internal predecessors, (3547), 0 states have call successors, (0), 0 states 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 22:10:35,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:35,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:35,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:35,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 22:10:35,649 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:10:35,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:35,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1763528937, now seen corresponding path program 1 times [2023-11-06 22:10:35,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:35,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99585484] [2023-11-06 22:10:35,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:35,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:35,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:10:35,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:35,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99585484] [2023-11-06 22:10:35,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99585484] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:10:35,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138816930] [2023-11-06 22:10:35,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:35,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:35,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:35,902 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:35,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:10:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:36,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:10:36,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:36,154 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:10:36,154 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:10:36,247 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:10:36,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138816930] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:10:36,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:10:36,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2023-11-06 22:10:36,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975111042] [2023-11-06 22:10:36,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:10:36,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:10:36,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:36,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:10:36,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:10:37,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 668 [2023-11-06 22:10:37,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 90 transitions, 462 flow. Second operand has 15 states, 15 states have (on average 271.06666666666666) internal successors, (4066), 15 states have internal predecessors, (4066), 0 states have call successors, (0), 0 states 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 22:10:37,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:37,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 668 [2023-11-06 22:10:37,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:38,037 INFO L124 PetriNetUnfolderBase]: 3386/4994 cut-off events. [2023-11-06 22:10:38,037 INFO L125 PetriNetUnfolderBase]: For 3694/3942 co-relation queries the response was YES. [2023-11-06 22:10:38,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13292 conditions, 4994 events. 3386/4994 cut-off events. For 3694/3942 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 27256 event pairs, 1413 based on Foata normal form. 248/4388 useless extension candidates. Maximal degree in co-relation 13197. Up to 2160 conditions per place. [2023-11-06 22:10:38,061 INFO L140 encePairwiseOnDemand]: 654/668 looper letters, 100 selfloop transitions, 43 changer transitions 16/165 dead transitions. [2023-11-06 22:10:38,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 165 transitions, 1057 flow [2023-11-06 22:10:38,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:10:38,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:10:38,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3332 transitions. [2023-11-06 22:10:38,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4156686626746507 [2023-11-06 22:10:38,075 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3332 transitions. [2023-11-06 22:10:38,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3332 transitions. [2023-11-06 22:10:38,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:38,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3332 transitions. [2023-11-06 22:10:38,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 277.6666666666667) internal successors, (3332), 12 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states 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 22:10:38,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 668.0) internal successors, (8684), 13 states have internal predecessors, (8684), 0 states have call successors, (0), 0 states 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 22:10:38,102 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 668.0) internal successors, (8684), 13 states have internal predecessors, (8684), 0 states have call successors, (0), 0 states 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 22:10:38,103 INFO L175 Difference]: Start difference. First operand has 64 places, 90 transitions, 462 flow. Second operand 12 states and 3332 transitions. [2023-11-06 22:10:38,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 165 transitions, 1057 flow [2023-11-06 22:10:38,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 165 transitions, 988 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-11-06 22:10:38,112 INFO L231 Difference]: Finished difference. Result has 69 places, 93 transitions, 502 flow [2023-11-06 22:10:38,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=668, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=502, PETRI_PLACES=69, PETRI_TRANSITIONS=93} [2023-11-06 22:10:38,113 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 18 predicate places. [2023-11-06 22:10:38,113 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 93 transitions, 502 flow [2023-11-06 22:10:38,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 271.06666666666666) internal successors, (4066), 15 states have internal predecessors, (4066), 0 states have call successors, (0), 0 states 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 22:10:38,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:38,115 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:38,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:38,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 22:10:38,321 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:10:38,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:38,322 INFO L85 PathProgramCache]: Analyzing trace with hash -320800113, now seen corresponding path program 1 times [2023-11-06 22:10:38,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:38,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954833673] [2023-11-06 22:10:38,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:38,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:38,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:38,422 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:10:38,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:38,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954833673] [2023-11-06 22:10:38,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954833673] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:10:38,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542099495] [2023-11-06 22:10:38,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:38,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:38,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:38,425 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:38,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:10:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:38,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:10:38,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:38,698 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:10:38,698 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:10:38,809 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:10:38,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542099495] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:10:38,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:10:38,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 15 [2023-11-06 22:10:38,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708135943] [2023-11-06 22:10:38,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:10:38,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:10:38,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:38,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:10:38,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:10:39,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 668 [2023-11-06 22:10:39,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 93 transitions, 502 flow. Second operand has 15 states, 15 states have (on average 271.0) internal successors, (4065), 15 states have internal predecessors, (4065), 0 states have call successors, (0), 0 states 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 22:10:39,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:39,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 668 [2023-11-06 22:10:39,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:40,557 INFO L124 PetriNetUnfolderBase]: 3923/5789 cut-off events. [2023-11-06 22:10:40,557 INFO L125 PetriNetUnfolderBase]: For 3479/3807 co-relation queries the response was YES. [2023-11-06 22:10:40,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16523 conditions, 5789 events. 3923/5789 cut-off events. For 3479/3807 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 31091 event pairs, 1120 based on Foata normal form. 376/5146 useless extension candidates. Maximal degree in co-relation 16425. Up to 1994 conditions per place. [2023-11-06 22:10:40,584 INFO L140 encePairwiseOnDemand]: 653/668 looper letters, 97 selfloop transitions, 27 changer transitions 61/190 dead transitions. [2023-11-06 22:10:40,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 190 transitions, 1245 flow [2023-11-06 22:10:40,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:10:40,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:10:40,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3350 transitions. [2023-11-06 22:10:40,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41791417165668665 [2023-11-06 22:10:40,594 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3350 transitions. [2023-11-06 22:10:40,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3350 transitions. [2023-11-06 22:10:40,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:40,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3350 transitions. [2023-11-06 22:10:40,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 279.1666666666667) internal successors, (3350), 12 states have internal predecessors, (3350), 0 states have call successors, (0), 0 states 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 22:10:40,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 668.0) internal successors, (8684), 13 states have internal predecessors, (8684), 0 states have call successors, (0), 0 states 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 22:10:40,617 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 668.0) internal successors, (8684), 13 states have internal predecessors, (8684), 0 states have call successors, (0), 0 states 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 22:10:40,617 INFO L175 Difference]: Start difference. First operand has 69 places, 93 transitions, 502 flow. Second operand 12 states and 3350 transitions. [2023-11-06 22:10:40,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 190 transitions, 1245 flow [2023-11-06 22:10:40,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 190 transitions, 1201 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 22:10:40,627 INFO L231 Difference]: Finished difference. Result has 76 places, 78 transitions, 475 flow [2023-11-06 22:10:40,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=668, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=475, PETRI_PLACES=76, PETRI_TRANSITIONS=78} [2023-11-06 22:10:40,628 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 25 predicate places. [2023-11-06 22:10:40,629 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 78 transitions, 475 flow [2023-11-06 22:10:40,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 271.0) internal successors, (4065), 15 states have internal predecessors, (4065), 0 states have call successors, (0), 0 states 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 22:10:40,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:40,630 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:40,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:40,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 22:10:40,836 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:10:40,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:40,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1183690213, now seen corresponding path program 1 times [2023-11-06 22:10:40,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:40,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612374964] [2023-11-06 22:10:40,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:40,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:40,928 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-06 22:10:40,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:40,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612374964] [2023-11-06 22:10:40,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612374964] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:40,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:40,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:10:40,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125919151] [2023-11-06 22:10:40,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:40,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:10:40,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:40,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:10:40,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:10:40,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 668 [2023-11-06 22:10:40,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 78 transitions, 475 flow. Second operand has 3 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 22:10:40,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:40,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 668 [2023-11-06 22:10:40,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:41,481 INFO L124 PetriNetUnfolderBase]: 2943/4420 cut-off events. [2023-11-06 22:10:41,481 INFO L125 PetriNetUnfolderBase]: For 5066/5354 co-relation queries the response was YES. [2023-11-06 22:10:41,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14076 conditions, 4420 events. 2943/4420 cut-off events. For 5066/5354 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 24242 event pairs, 559 based on Foata normal form. 500/4243 useless extension candidates. Maximal degree in co-relation 13970. Up to 2808 conditions per place. [2023-11-06 22:10:41,506 INFO L140 encePairwiseOnDemand]: 665/668 looper letters, 85 selfloop transitions, 4 changer transitions 0/94 dead transitions. [2023-11-06 22:10:41,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 94 transitions, 715 flow [2023-11-06 22:10:41,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:10:41,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:10:41,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 960 transitions. [2023-11-06 22:10:41,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47904191616766467 [2023-11-06 22:10:41,509 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 960 transitions. [2023-11-06 22:10:41,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 960 transitions. [2023-11-06 22:10:41,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:41,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 960 transitions. [2023-11-06 22:10:41,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:10:41,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 668.0) internal successors, (2672), 4 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states 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 22:10:41,515 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 668.0) internal successors, (2672), 4 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states 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 22:10:41,515 INFO L175 Difference]: Start difference. First operand has 76 places, 78 transitions, 475 flow. Second operand 3 states and 960 transitions. [2023-11-06 22:10:41,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 94 transitions, 715 flow [2023-11-06 22:10:41,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 94 transitions, 637 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-11-06 22:10:41,535 INFO L231 Difference]: Finished difference. Result has 57 places, 76 transitions, 393 flow [2023-11-06 22:10:41,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=668, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=393, PETRI_PLACES=57, PETRI_TRANSITIONS=76} [2023-11-06 22:10:41,536 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 6 predicate places. [2023-11-06 22:10:41,537 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 76 transitions, 393 flow [2023-11-06 22:10:41,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 22:10:41,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:41,537 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:41,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 22:10:41,538 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:10:41,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:41,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1776367714, now seen corresponding path program 2 times [2023-11-06 22:10:41,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:41,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234289042] [2023-11-06 22:10:41,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:41,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:41,742 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:10:41,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:41,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234289042] [2023-11-06 22:10:41,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234289042] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:10:41,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961619017] [2023-11-06 22:10:41,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:10:41,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:41,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:41,744 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:41,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:10:41,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:10:41,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:10:41,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:10:41,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:41,971 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-06 22:10:41,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:10:42,031 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-06 22:10:42,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961619017] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:10:42,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:10:42,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 2, 2] total 8 [2023-11-06 22:10:42,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186667378] [2023-11-06 22:10:42,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:10:42,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:10:42,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:42,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:10:42,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:10:42,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 668 [2023-11-06 22:10:42,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 76 transitions, 393 flow. Second operand has 10 states, 10 states have (on average 273.3) internal successors, (2733), 10 states have internal predecessors, (2733), 0 states have call successors, (0), 0 states 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 22:10:42,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:42,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 668 [2023-11-06 22:10:42,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:43,444 INFO L124 PetriNetUnfolderBase]: 5335/7757 cut-off events. [2023-11-06 22:10:43,444 INFO L125 PetriNetUnfolderBase]: For 6647/7171 co-relation queries the response was YES. [2023-11-06 22:10:43,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23278 conditions, 7757 events. 5335/7757 cut-off events. For 6647/7171 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 41648 event pairs, 1374 based on Foata normal form. 524/7300 useless extension candidates. Maximal degree in co-relation 23124. Up to 1688 conditions per place. [2023-11-06 22:10:43,487 INFO L140 encePairwiseOnDemand]: 654/668 looper letters, 143 selfloop transitions, 60 changer transitions 21/229 dead transitions. [2023-11-06 22:10:43,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 229 transitions, 1551 flow [2023-11-06 22:10:43,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:10:43,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-06 22:10:43,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4197 transitions. [2023-11-06 22:10:43,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4188622754491018 [2023-11-06 22:10:43,495 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4197 transitions. [2023-11-06 22:10:43,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4197 transitions. [2023-11-06 22:10:43,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:43,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4197 transitions. [2023-11-06 22:10:43,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 279.8) internal successors, (4197), 15 states have internal predecessors, (4197), 0 states have call successors, (0), 0 states 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 22:10:43,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 668.0) internal successors, (10688), 16 states have internal predecessors, (10688), 0 states have call successors, (0), 0 states 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 22:10:43,518 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 668.0) internal successors, (10688), 16 states have internal predecessors, (10688), 0 states have call successors, (0), 0 states 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 22:10:43,518 INFO L175 Difference]: Start difference. First operand has 57 places, 76 transitions, 393 flow. Second operand 15 states and 4197 transitions. [2023-11-06 22:10:43,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 229 transitions, 1551 flow [2023-11-06 22:10:43,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 229 transitions, 1507 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:10:43,549 INFO L231 Difference]: Finished difference. Result has 72 places, 103 transitions, 728 flow [2023-11-06 22:10:43,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=668, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=728, PETRI_PLACES=72, PETRI_TRANSITIONS=103} [2023-11-06 22:10:43,550 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 21 predicate places. [2023-11-06 22:10:43,550 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 103 transitions, 728 flow [2023-11-06 22:10:43,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 273.3) internal successors, (2733), 10 states have internal predecessors, (2733), 0 states have call successors, (0), 0 states 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 22:10:43,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:43,551 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:43,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-06 22:10:43,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:43,758 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-11-06 22:10:43,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:43,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1636283799, now seen corresponding path program 2 times [2023-11-06 22:10:43,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:10:43,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145670349] [2023-11-06 22:10:43,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:43,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:10:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:43,892 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-06 22:10:43,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:10:43,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145670349] [2023-11-06 22:10:43,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145670349] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:10:43,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452853050] [2023-11-06 22:10:43,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:10:43,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:43,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:10:43,894 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:10:43,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:10:44,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:10:44,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:10:44,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:10:44,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:44,111 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-06 22:10:44,111 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:10:44,162 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-06 22:10:44,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452853050] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:10:44,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:10:44,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 2, 2] total 6 [2023-11-06 22:10:44,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713143977] [2023-11-06 22:10:44,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:10:44,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:10:44,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:10:44,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:10:44,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:10:44,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 668 [2023-11-06 22:10:44,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 103 transitions, 728 flow. Second operand has 7 states, 7 states have (on average 307.14285714285717) internal successors, (2150), 7 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states 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 22:10:44,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:44,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 668 [2023-11-06 22:10:44,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:45,099 INFO L124 PetriNetUnfolderBase]: 5169/7866 cut-off events. [2023-11-06 22:10:45,099 INFO L125 PetriNetUnfolderBase]: For 12544/13091 co-relation queries the response was YES. [2023-11-06 22:10:45,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24527 conditions, 7866 events. 5169/7866 cut-off events. For 12544/13091 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 45039 event pairs, 594 based on Foata normal form. 547/7633 useless extension candidates. Maximal degree in co-relation 24343. Up to 1572 conditions per place. [2023-11-06 22:10:45,126 INFO L140 encePairwiseOnDemand]: 663/668 looper letters, 0 selfloop transitions, 0 changer transitions 211/211 dead transitions. [2023-11-06 22:10:45,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 211 transitions, 1762 flow [2023-11-06 22:10:45,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:10:45,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:10:45,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2193 transitions. [2023-11-06 22:10:45,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46899059024807527 [2023-11-06 22:10:45,130 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2193 transitions. [2023-11-06 22:10:45,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2193 transitions. [2023-11-06 22:10:45,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:45,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2193 transitions. [2023-11-06 22:10:45,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 313.2857142857143) internal successors, (2193), 7 states have internal predecessors, (2193), 0 states have call successors, (0), 0 states 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 22:10:45,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 668.0) internal successors, (5344), 8 states have internal predecessors, (5344), 0 states have call successors, (0), 0 states 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 22:10:45,141 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 668.0) internal successors, (5344), 8 states have internal predecessors, (5344), 0 states have call successors, (0), 0 states 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 22:10:45,141 INFO L175 Difference]: Start difference. First operand has 72 places, 103 transitions, 728 flow. Second operand 7 states and 2193 transitions. [2023-11-06 22:10:45,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 211 transitions, 1762 flow [2023-11-06 22:10:45,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 211 transitions, 1649 flow, removed 35 selfloop flow, removed 3 redundant places. [2023-11-06 22:10:45,167 INFO L231 Difference]: Finished difference. Result has 72 places, 0 transitions, 0 flow [2023-11-06 22:10:45,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=668, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=72, PETRI_TRANSITIONS=0} [2023-11-06 22:10:45,168 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 21 predicate places. [2023-11-06 22:10:45,168 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 0 transitions, 0 flow [2023-11-06 22:10:45,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 307.14285714285717) internal successors, (2150), 7 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states 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 22:10:45,171 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 23 remaining) [2023-11-06 22:10:45,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2023-11-06 22:10:45,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2023-11-06 22:10:45,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2023-11-06 22:10:45,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2023-11-06 22:10:45,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2023-11-06 22:10:45,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2023-11-06 22:10:45,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2023-11-06 22:10:45,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2023-11-06 22:10:45,174 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2023-11-06 22:10:45,174 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2023-11-06 22:10:45,174 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2023-11-06 22:10:45,174 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2023-11-06 22:10:45,174 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2023-11-06 22:10:45,174 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 23 remaining) [2023-11-06 22:10:45,175 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 23 remaining) [2023-11-06 22:10:45,175 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 23 remaining) [2023-11-06 22:10:45,175 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2023-11-06 22:10:45,175 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2023-11-06 22:10:45,175 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2023-11-06 22:10:45,176 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2023-11-06 22:10:45,176 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2023-11-06 22:10:45,176 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2023-11-06 22:10:45,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:45,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:10:45,383 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:10:45,389 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:10:45,389 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:10:45,393 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:10:45 BasicIcfg [2023-11-06 22:10:45,393 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:10:45,394 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:10:45,394 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:10:45,394 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:10:45,395 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:10:03" (3/4) ... [2023-11-06 22:10:45,397 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:10:45,402 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 22:10:45,402 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 22:10:45,402 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-06 22:10:45,422 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 32 nodes and edges [2023-11-06 22:10:45,422 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 22:10:45,423 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:10:45,424 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:10:45,543 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:10:45,543 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:10:45,543 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:10:45,544 INFO L158 Benchmark]: Toolchain (without parser) took 43052.15ms. Allocated memory was 209.7MB in the beginning and 1.0GB in the end (delta: 803.2MB). Free memory was 173.5MB in the beginning and 517.5MB in the end (delta: -343.9MB). Peak memory consumption was 461.4MB. Max. memory is 16.1GB. [2023-11-06 22:10:45,544 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 104.9MB. Free memory was 71.7MB in the beginning and 71.7MB in the end (delta: 28.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:10:45,545 INFO L158 Benchmark]: CACSL2BoogieTranslator took 388.54ms. Allocated memory is still 209.7MB. Free memory was 173.5MB in the beginning and 161.2MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 22:10:45,545 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.08ms. Allocated memory is still 209.7MB. Free memory was 161.2MB in the beginning and 159.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:10:45,546 INFO L158 Benchmark]: Boogie Preprocessor took 57.88ms. Allocated memory is still 209.7MB. Free memory was 159.1MB in the beginning and 157.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:10:45,546 INFO L158 Benchmark]: RCFGBuilder took 927.39ms. Allocated memory is still 209.7MB. Free memory was 157.0MB in the beginning and 131.9MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-06 22:10:45,546 INFO L158 Benchmark]: TraceAbstraction took 41461.65ms. Allocated memory was 209.7MB in the beginning and 1.0GB in the end (delta: 803.2MB). Free memory was 130.7MB in the beginning and 522.7MB in the end (delta: -392.0MB). Peak memory consumption was 413.1MB. Max. memory is 16.1GB. [2023-11-06 22:10:45,547 INFO L158 Benchmark]: Witness Printer took 149.46ms. Allocated memory is still 1.0GB. Free memory was 522.7MB in the beginning and 517.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 22:10:45,550 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 104.9MB. Free memory was 71.7MB in the beginning and 71.7MB in the end (delta: 28.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 388.54ms. Allocated memory is still 209.7MB. Free memory was 173.5MB in the beginning and 161.2MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.08ms. Allocated memory is still 209.7MB. Free memory was 161.2MB in the beginning and 159.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.88ms. Allocated memory is still 209.7MB. Free memory was 159.1MB in the beginning and 157.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 927.39ms. Allocated memory is still 209.7MB. Free memory was 157.0MB in the beginning and 131.9MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 41461.65ms. Allocated memory was 209.7MB in the beginning and 1.0GB in the end (delta: 803.2MB). Free memory was 130.7MB in the beginning and 522.7MB in the end (delta: -392.0MB). Peak memory consumption was 413.1MB. Max. memory is 16.1GB. * Witness Printer took 149.46ms. Allocated memory is still 1.0GB. Free memory was 522.7MB in the beginning and 517.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.5s, 278 PlacesBefore, 51 PlacesAfterwards, 291 TransitionsBefore, 48 TransitionsAfterwards, 3534 CoEnabledTransitionPairs, 7 FixpointIterations, 209 TrivialSequentialCompositions, 55 ConcurrentSequentialCompositions, 48 TrivialYvCompositions, 6 ConcurrentYvCompositions, 16 ChoiceCompositions, 334 TotalNumberOfCompositions, 7458 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3984, independent: 3784, independent conditional: 0, independent unconditional: 3784, dependent: 200, dependent conditional: 0, dependent unconditional: 200, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1804, independent: 1754, independent conditional: 0, independent unconditional: 1754, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3984, independent: 2030, independent conditional: 0, independent unconditional: 2030, dependent: 150, dependent conditional: 0, dependent unconditional: 150, unknown: 1804, unknown conditional: 0, unknown unconditional: 1804] , Statistics on independence cache: Total cache size (in pairs): 135, Positive cache size: 118, Positive conditional cache size: 0, Positive unconditional cache size: 118, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: 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, 367 locations, 23 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: 41.2s, OverallIterations: 20, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 21.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 11.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5417 SdHoareTripleChecker+Valid, 7.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4157 mSDsluCounter, 4600 SdHoareTripleChecker+Invalid, 6.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3825 mSDsCounter, 524 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9733 IncrementalHoareTripleChecker+Invalid, 10257 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 524 mSolverCounterUnsat, 775 mSDtfsCounter, 9733 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 368 GetRequests, 211 SyntacticMatches, 6 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=728occurred in iteration=19, InterpolantAutomatonStates: 127, 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: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 420 NumberOfCodeBlocks, 381 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 497 ConstructedInterpolants, 0 QuantifiedInterpolants, 1481 SizeOfPredicates, 28 NumberOfNonLiveVariables, 2058 ConjunctsInSsa, 73 ConjunctsInUnsatCore, 38 InterpolantComputations, 13 PerfectInterpolantSequences, 229/317 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 22:10:45,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6f4dfc-9c28-42be-b493-db50e9a98abf/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