./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d79cb5dae664e13779624ff0ffbc531b419f89e2c7510a92e890992a52ee7c98 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:28:49,547 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:28:49,658 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 23:28:49,663 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:28:49,664 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:28:49,694 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:28:49,695 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:28:49,695 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:28:49,697 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:28:49,697 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:28:49,697 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:28:49,697 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:28:49,698 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:28:49,698 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:28:49,698 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:28:49,698 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:28:49,698 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:28:49,699 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:28:49,699 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:28:49,699 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:28:49,699 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:28:49,699 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:28:49,699 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:28:49,699 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:28:49,699 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 23:28:49,699 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 23:28:49,700 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:28:49,700 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:28:49,700 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:28:49,700 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:28:49,702 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:28:49,702 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:28:49,702 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:28:49,702 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:28:49,702 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:28:49,703 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:28:49,703 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:28:49,703 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:28:49,703 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:28:49,703 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:28:49,703 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:28:49,704 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:28:49,704 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:28:49,704 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:28:49,704 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:28:49,704 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:28:49,705 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:28:49,705 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:28:49,705 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:28:49,705 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:28:49,705 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d79cb5dae664e13779624ff0ffbc531b419f89e2c7510a92e890992a52ee7c98 [2024-11-23 23:28:50,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:28:50,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:28:50,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:28:50,097 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:28:50,097 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:28:50,099 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2024-11-23 23:28:53,245 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC/data/a36dba679/d753ff8db1c94ceb83b9d3c2a058f2a8/FLAG3fa71d0bb [2024-11-23 23:28:53,585 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:28:53,586 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2024-11-23 23:28:53,597 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC/data/a36dba679/d753ff8db1c94ceb83b9d3c2a058f2a8/FLAG3fa71d0bb [2024-11-23 23:28:53,624 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC/data/a36dba679/d753ff8db1c94ceb83b9d3c2a058f2a8 [2024-11-23 23:28:53,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:28:53,629 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:28:53,632 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:28:53,633 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:28:53,638 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:28:53,639 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:28:53" (1/1) ... [2024-11-23 23:28:53,640 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c3e23c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:28:53, skipping insertion in model container [2024-11-23 23:28:53,642 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:28:53" (1/1) ... [2024-11-23 23:28:53,671 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:28:53,924 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:28:53,934 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:28:53,983 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:28:54,006 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:28:54,006 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:28:54 WrapperNode [2024-11-23 23:28:54,006 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:28:54,007 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:28:54,007 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:28:54,007 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:28:54,019 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:28:54" (1/1) ... [2024-11-23 23:28:54,027 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:28:54" (1/1) ... [2024-11-23 23:28:54,054 INFO L138 Inliner]: procedures = 25, calls = 36, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 186 [2024-11-23 23:28:54,055 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:28:54,055 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:28:54,055 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:28:54,055 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:28:54,066 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:28:54" (1/1) ... [2024-11-23 23:28:54,067 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:28:54" (1/1) ... [2024-11-23 23:28:54,070 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:28:54" (1/1) ... [2024-11-23 23:28:54,086 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-23 23:28:54,087 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:28:54" (1/1) ... [2024-11-23 23:28:54,087 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:28:54" (1/1) ... [2024-11-23 23:28:54,095 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:28:54" (1/1) ... [2024-11-23 23:28:54,096 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:28:54" (1/1) ... [2024-11-23 23:28:54,101 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:28:54" (1/1) ... [2024-11-23 23:28:54,102 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:28:54" (1/1) ... [2024-11-23 23:28:54,104 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:28:54" (1/1) ... [2024-11-23 23:28:54,106 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:28:54,107 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:28:54,107 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:28:54,107 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:28:54,109 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:28:54" (1/1) ... [2024-11-23 23:28:54,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:28:54,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:28:54,148 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:28:54,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:28:54,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:28:54,179 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-23 23:28:54,179 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-23 23:28:54,180 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-23 23:28:54,180 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-23 23:28:54,180 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-23 23:28:54,180 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-23 23:28:54,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:28:54,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 23:28:54,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 23:28:54,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 23:28:54,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-23 23:28:54,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-23 23:28:54,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 23:28:54,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:28:54,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:28:54,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 23:28:54,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 23:28:54,184 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 23:28:54,338 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:28:54,341 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:28:54,799 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 23:28:54,799 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:28:55,175 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:28:55,177 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-23 23:28:55,178 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:28:55 BoogieIcfgContainer [2024-11-23 23:28:55,178 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:28:55,180 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:28:55,180 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:28:55,187 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:28:55,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:28:53" (1/3) ... [2024-11-23 23:28:55,188 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f9a239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:28:55, skipping insertion in model container [2024-11-23 23:28:55,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:28:54" (2/3) ... [2024-11-23 23:28:55,190 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f9a239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:28:55, skipping insertion in model container [2024-11-23 23:28:55,190 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:28:55" (3/3) ... [2024-11-23 23:28:55,191 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-multiply-verify.wvr.c [2024-11-23 23:28:55,208 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:28:55,210 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-multiply-verify.wvr.c that has 4 procedures, 47 locations, 1 initial locations, 3 loop locations, and 12 error locations. [2024-11-23 23:28:55,210 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 23:28:55,318 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-23 23:28:55,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 49 transitions, 119 flow [2024-11-23 23:28:55,409 INFO L124 PetriNetUnfolderBase]: 3/46 cut-off events. [2024-11-23 23:28:55,415 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-23 23:28:55,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 3/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 117 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2024-11-23 23:28:55,423 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 49 transitions, 119 flow [2024-11-23 23:28:55,428 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 44 transitions, 103 flow [2024-11-23 23:28:55,445 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:28:55,463 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2227d36d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:28:55,464 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-11-23 23:28:55,468 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 23:28:55,469 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-23 23:28:55,469 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 23:28:55,469 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:28:55,470 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-23 23:28:55,470 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-23 23:28:55,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:28:55,476 INFO L85 PathProgramCache]: Analyzing trace with hash 572871, now seen corresponding path program 1 times [2024-11-23 23:28:55,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:28:55,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143671412] [2024-11-23 23:28:55,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:28:55,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:28:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:28:55,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:28:55,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:28:55,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143671412] [2024-11-23 23:28:55,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143671412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:28:55,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:28:55,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:28:55,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704739037] [2024-11-23 23:28:55,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:28:55,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:28:55,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:28:55,784 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:28:55,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:28:55,806 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-11-23 23:28:55,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 103 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:28:55,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:28:55,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-11-23 23:28:55,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:28:56,394 INFO L124 PetriNetUnfolderBase]: 1238/1887 cut-off events. [2024-11-23 23:28:56,394 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2024-11-23 23:28:56,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3823 conditions, 1887 events. 1238/1887 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9799 event pairs, 1060 based on Foata normal form. 1/1401 useless extension candidates. Maximal degree in co-relation 3526. Up to 1802 conditions per place. [2024-11-23 23:28:56,425 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 30 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2024-11-23 23:28:56,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 171 flow [2024-11-23 23:28:56,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:28:56,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 23:28:56,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-11-23 23:28:56,447 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-11-23 23:28:56,449 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 103 flow. Second operand 4 states and 91 transitions. [2024-11-23 23:28:56,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 171 flow [2024-11-23 23:28:56,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 44 transitions, 162 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-23 23:28:56,471 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 117 flow [2024-11-23 23:28:56,475 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=117, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2024-11-23 23:28:56,481 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, -3 predicate places. [2024-11-23 23:28:56,481 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 117 flow [2024-11-23 23:28:56,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:28:56,482 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:28:56,482 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-23 23:28:56,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 23:28:56,482 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-23 23:28:56,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:28:56,483 INFO L85 PathProgramCache]: Analyzing trace with hash -112911728, now seen corresponding path program 1 times [2024-11-23 23:28:56,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:28:56,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882329442] [2024-11-23 23:28:56,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:28:56,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:28:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:28:56,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:28:56,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:28:56,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882329442] [2024-11-23 23:28:56,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882329442] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:28:56,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927748238] [2024-11-23 23:28:56,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:28:56,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:28:56,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:28:56,708 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:28:56,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:28:56,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:28:56,828 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 23:28:56,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:28:56,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:28:56,900 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:28:56,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927748238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:28:56,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:28:56,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 23:28:56,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408339019] [2024-11-23 23:28:56,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:28:56,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:28:56,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:28:56,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:28:56,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:28:56,922 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-11-23 23:28:56,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 117 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:28:56,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:28:56,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-11-23 23:28:56,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:28:57,456 INFO L124 PetriNetUnfolderBase]: 1238/1886 cut-off events. [2024-11-23 23:28:57,457 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-11-23 23:28:57,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3783 conditions, 1886 events. 1238/1886 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9829 event pairs, 1060 based on Foata normal form. 1/1401 useless extension candidates. Maximal degree in co-relation 3756. Up to 1797 conditions per place. [2024-11-23 23:28:57,476 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 26 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2024-11-23 23:28:57,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 43 transitions, 179 flow [2024-11-23 23:28:57,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:28:57,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 23:28:57,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2024-11-23 23:28:57,479 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-11-23 23:28:57,479 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 117 flow. Second operand 6 states and 112 transitions. [2024-11-23 23:28:57,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 43 transitions, 179 flow [2024-11-23 23:28:57,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 43 transitions, 176 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 23:28:57,483 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 124 flow [2024-11-23 23:28:57,483 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=124, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2024-11-23 23:28:57,487 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2024-11-23 23:28:57,487 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 124 flow [2024-11-23 23:28:57,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:28:57,488 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:28:57,488 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-23 23:28:57,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 23:28:57,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:28:57,689 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-23 23:28:57,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:28:57,690 INFO L85 PathProgramCache]: Analyzing trace with hash -110924030, now seen corresponding path program 1 times [2024-11-23 23:28:57,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:28:57,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91223917] [2024-11-23 23:28:57,691 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:28:57,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:28:57,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:28:57,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:28:57,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:28:57,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91223917] [2024-11-23 23:28:57,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91223917] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:28:57,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:28:57,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:28:57,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738155996] [2024-11-23 23:28:57,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:28:57,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:28:57,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:28:57,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:28:57,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:28:57,974 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-11-23 23:28:57,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:28:57,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:28:57,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-11-23 23:28:57,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:28:58,446 INFO L124 PetriNetUnfolderBase]: 1275/1998 cut-off events. [2024-11-23 23:28:58,446 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-23 23:28:58,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4001 conditions, 1998 events. 1275/1998 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 10220 event pairs, 983 based on Foata normal form. 51/1585 useless extension candidates. Maximal degree in co-relation 3580. Up to 1527 conditions per place. [2024-11-23 23:28:58,464 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 45 selfloop transitions, 4 changer transitions 0/60 dead transitions. [2024-11-23 23:28:58,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 60 transitions, 262 flow [2024-11-23 23:28:58,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:28:58,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 23:28:58,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-11-23 23:28:58,469 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5918367346938775 [2024-11-23 23:28:58,470 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 124 flow. Second operand 4 states and 116 transitions. [2024-11-23 23:28:58,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 60 transitions, 262 flow [2024-11-23 23:28:58,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 60 transitions, 240 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-23 23:28:58,473 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 133 flow [2024-11-23 23:28:58,473 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-11-23 23:28:58,474 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2024-11-23 23:28:58,474 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 133 flow [2024-11-23 23:28:58,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:28:58,474 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:28:58,474 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-23 23:28:58,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:28:58,475 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-23 23:28:58,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:28:58,475 INFO L85 PathProgramCache]: Analyzing trace with hash 794704290, now seen corresponding path program 1 times [2024-11-23 23:28:58,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:28:58,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752147368] [2024-11-23 23:28:58,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:28:58,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:28:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:28:58,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:28:58,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:28:58,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752147368] [2024-11-23 23:28:58,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752147368] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:28:58,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072988172] [2024-11-23 23:28:58,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:28:58,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:28:58,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:28:58,655 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:28:58,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:28:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:28:58,745 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 23:28:58,746 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:28:58,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:28:58,784 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:28:58,842 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:28:58,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072988172] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:28:58,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:28:58,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-23 23:28:58,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852150180] [2024-11-23 23:28:58,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:28:58,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 23:28:58,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:28:58,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 23:28:58,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:28:58,868 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-11-23 23:28:58,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 133 flow. Second operand has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:28:58,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:28:58,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-11-23 23:28:58,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:28:59,326 INFO L124 PetriNetUnfolderBase]: 1278/1960 cut-off events. [2024-11-23 23:28:59,326 INFO L125 PetriNetUnfolderBase]: For 343/343 co-relation queries the response was YES. [2024-11-23 23:28:59,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4687 conditions, 1960 events. 1278/1960 cut-off events. For 343/343 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9881 event pairs, 1054 based on Foata normal form. 3/1583 useless extension candidates. Maximal degree in co-relation 4224. Up to 1884 conditions per place. [2024-11-23 23:28:59,341 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 30 selfloop transitions, 13 changer transitions 0/53 dead transitions. [2024-11-23 23:28:59,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 53 transitions, 249 flow [2024-11-23 23:28:59,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:28:59,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 23:28:59,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-11-23 23:28:59,345 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-11-23 23:28:59,345 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 133 flow. Second operand 10 states and 175 transitions. [2024-11-23 23:28:59,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 53 transitions, 249 flow [2024-11-23 23:28:59,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 53 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 23:28:59,349 INFO L231 Difference]: Finished difference. Result has 62 places, 53 transitions, 204 flow [2024-11-23 23:28:59,349 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=204, PETRI_PLACES=62, PETRI_TRANSITIONS=53} [2024-11-23 23:28:59,350 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2024-11-23 23:28:59,351 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 53 transitions, 204 flow [2024-11-23 23:28:59,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:28:59,352 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:28:59,352 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:28:59,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 23:28:59,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:28:59,557 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-23 23:28:59,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:28:59,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1384628355, now seen corresponding path program 1 times [2024-11-23 23:28:59,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:28:59,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476224743] [2024-11-23 23:28:59,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:28:59,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:28:59,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:28:59,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:28:59,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:28:59,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476224743] [2024-11-23 23:28:59,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476224743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:28:59,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:28:59,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:28:59,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80087266] [2024-11-23 23:28:59,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:28:59,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:28:59,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:28:59,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:28:59,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:28:59,699 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-11-23 23:28:59,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:28:59,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:28:59,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-11-23 23:28:59,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:28:59,978 INFO L124 PetriNetUnfolderBase]: 1117/1720 cut-off events. [2024-11-23 23:28:59,979 INFO L125 PetriNetUnfolderBase]: For 351/351 co-relation queries the response was YES. [2024-11-23 23:28:59,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4055 conditions, 1720 events. 1117/1720 cut-off events. For 351/351 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 8427 event pairs, 936 based on Foata normal form. 91/1440 useless extension candidates. Maximal degree in co-relation 4019. Up to 1639 conditions per place. [2024-11-23 23:28:59,992 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 34 selfloop transitions, 5 changer transitions 1/51 dead transitions. [2024-11-23 23:28:59,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 51 transitions, 274 flow [2024-11-23 23:28:59,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:28:59,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 23:28:59,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-11-23 23:28:59,994 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45408163265306123 [2024-11-23 23:28:59,994 INFO L175 Difference]: Start difference. First operand has 62 places, 53 transitions, 204 flow. Second operand 4 states and 89 transitions. [2024-11-23 23:28:59,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 51 transitions, 274 flow [2024-11-23 23:28:59,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 51 transitions, 259 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-23 23:28:59,998 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 184 flow [2024-11-23 23:28:59,998 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2024-11-23 23:29:00,001 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 9 predicate places. [2024-11-23 23:29:00,001 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 184 flow [2024-11-23 23:29:00,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:29:00,001 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:29:00,001 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:29:00,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:29:00,002 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-23 23:29:00,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:29:00,004 INFO L85 PathProgramCache]: Analyzing trace with hash -791350887, now seen corresponding path program 1 times [2024-11-23 23:29:00,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:29:00,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165580419] [2024-11-23 23:29:00,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:00,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:29:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:00,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:29:00,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:29:00,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165580419] [2024-11-23 23:29:00,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165580419] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:29:00,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574706540] [2024-11-23 23:29:00,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:00,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:29:00,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:29:00,258 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:29:00,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:29:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:00,346 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:29:00,347 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:29:00,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 23:29:00,374 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:29:00,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574706540] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:29:00,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:29:00,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-23 23:29:00,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486367350] [2024-11-23 23:29:00,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:29:00,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:29:00,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:29:00,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:29:00,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:29:00,376 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-11-23 23:29:00,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:29:00,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:29:00,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-11-23 23:29:00,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:29:00,518 INFO L124 PetriNetUnfolderBase]: 467/780 cut-off events. [2024-11-23 23:29:00,518 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-11-23 23:29:00,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1724 conditions, 780 events. 467/780 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3440 event pairs, 378 based on Foata normal form. 0/725 useless extension candidates. Maximal degree in co-relation 1695. Up to 706 conditions per place. [2024-11-23 23:29:00,523 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 33 selfloop transitions, 1 changer transitions 1/46 dead transitions. [2024-11-23 23:29:00,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 46 transitions, 238 flow [2024-11-23 23:29:00,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:29:00,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 23:29:00,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-11-23 23:29:00,526 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4965986394557823 [2024-11-23 23:29:00,527 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 184 flow. Second operand 3 states and 73 transitions. [2024-11-23 23:29:00,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 46 transitions, 238 flow [2024-11-23 23:29:00,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 46 transitions, 232 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 23:29:00,529 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 162 flow [2024-11-23 23:29:00,529 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2024-11-23 23:29:00,530 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2024-11-23 23:29:00,530 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 162 flow [2024-11-23 23:29:00,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:29:00,530 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:29:00,530 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:29:00,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 23:29:00,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-23 23:29:00,731 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-23 23:29:00,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:29:00,731 INFO L85 PathProgramCache]: Analyzing trace with hash -831158607, now seen corresponding path program 1 times [2024-11-23 23:29:00,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:29:00,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299272337] [2024-11-23 23:29:00,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:00,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:29:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:00,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 23:29:00,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:29:00,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299272337] [2024-11-23 23:29:00,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299272337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:29:00,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:29:00,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-23 23:29:00,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026144222] [2024-11-23 23:29:00,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:29:00,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:29:00,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:29:00,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:29:00,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:29:00,825 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-11-23 23:29:00,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:29:00,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:29:00,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-11-23 23:29:00,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:29:00,983 INFO L124 PetriNetUnfolderBase]: 467/760 cut-off events. [2024-11-23 23:29:00,984 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-11-23 23:29:00,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1704 conditions, 760 events. 467/760 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3203 event pairs, 378 based on Foata normal form. 41/755 useless extension candidates. Maximal degree in co-relation 1692. Up to 706 conditions per place. [2024-11-23 23:29:00,988 INFO L140 encePairwiseOnDemand]: 47/49 looper letters, 34 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2024-11-23 23:29:00,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 44 transitions, 230 flow [2024-11-23 23:29:00,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:29:00,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 23:29:00,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2024-11-23 23:29:00,989 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43537414965986393 [2024-11-23 23:29:00,989 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 162 flow. Second operand 3 states and 64 transitions. [2024-11-23 23:29:00,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 44 transitions, 230 flow [2024-11-23 23:29:00,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 44 transitions, 229 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 23:29:00,991 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 161 flow [2024-11-23 23:29:00,991 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2024-11-23 23:29:00,992 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2024-11-23 23:29:00,992 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 161 flow [2024-11-23 23:29:00,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:29:00,992 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:29:00,992 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:29:00,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:29:00,995 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-23 23:29:00,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:29:00,996 INFO L85 PathProgramCache]: Analyzing trace with hash 3887570, now seen corresponding path program 1 times [2024-11-23 23:29:00,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:29:00,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152833393] [2024-11-23 23:29:00,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:00,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:29:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:01,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 23:29:01,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:29:01,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152833393] [2024-11-23 23:29:01,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152833393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:29:01,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:29:01,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:29:01,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127642821] [2024-11-23 23:29:01,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:29:01,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:29:01,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:29:01,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:29:01,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:29:01,089 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-11-23 23:29:01,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:29:01,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:29:01,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-11-23 23:29:01,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:29:01,223 INFO L124 PetriNetUnfolderBase]: 274/561 cut-off events. [2024-11-23 23:29:01,223 INFO L125 PetriNetUnfolderBase]: For 96/101 co-relation queries the response was YES. [2024-11-23 23:29:01,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1188 conditions, 561 events. 274/561 cut-off events. For 96/101 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2567 event pairs, 86 based on Foata normal form. 15/564 useless extension candidates. Maximal degree in co-relation 1175. Up to 313 conditions per place. [2024-11-23 23:29:01,227 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 44 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2024-11-23 23:29:01,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 57 transitions, 288 flow [2024-11-23 23:29:01,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:29:01,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 23:29:01,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-11-23 23:29:01,228 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5578231292517006 [2024-11-23 23:29:01,228 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 161 flow. Second operand 3 states and 82 transitions. [2024-11-23 23:29:01,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 57 transitions, 288 flow [2024-11-23 23:29:01,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 57 transitions, 287 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 23:29:01,230 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 183 flow [2024-11-23 23:29:01,231 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2024-11-23 23:29:01,232 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 5 predicate places. [2024-11-23 23:29:01,233 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 183 flow [2024-11-23 23:29:01,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:29:01,234 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:29:01,234 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-23 23:29:01,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:29:01,234 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-23 23:29:01,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:29:01,235 INFO L85 PathProgramCache]: Analyzing trace with hash -480829813, now seen corresponding path program 2 times [2024-11-23 23:29:01,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:29:01,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744269704] [2024-11-23 23:29:01,235 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:29:01,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:29:01,261 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:29:01,263 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:29:01,334 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 23:29:01,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:29:01,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744269704] [2024-11-23 23:29:01,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744269704] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:29:01,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893160095] [2024-11-23 23:29:01,335 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:29:01,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:29:01,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:29:01,337 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:29:01,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:29:01,423 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:29:01,423 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:29:01,425 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 23:29:01,426 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:29:01,475 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 23:29:01,475 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:29:01,517 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 23:29:01,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893160095] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:29:01,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:29:01,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-23 23:29:01,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300231034] [2024-11-23 23:29:01,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:29:01,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:29:01,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:29:01,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:29:01,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:29:01,526 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-11-23 23:29:01,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:29:01,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:29:01,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-11-23 23:29:01,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:29:01,660 INFO L124 PetriNetUnfolderBase]: 274/520 cut-off events. [2024-11-23 23:29:01,660 INFO L125 PetriNetUnfolderBase]: For 208/208 co-relation queries the response was YES. [2024-11-23 23:29:01,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1261 conditions, 520 events. 274/520 cut-off events. For 208/208 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2173 event pairs, 206 based on Foata normal form. 1/505 useless extension candidates. Maximal degree in co-relation 1246. Up to 429 conditions per place. [2024-11-23 23:29:01,664 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 21 selfloop transitions, 15 changer transitions 0/45 dead transitions. [2024-11-23 23:29:01,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 45 transitions, 245 flow [2024-11-23 23:29:01,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:29:01,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 23:29:01,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2024-11-23 23:29:01,665 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3877551020408163 [2024-11-23 23:29:01,665 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 183 flow. Second operand 4 states and 76 transitions. [2024-11-23 23:29:01,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 45 transitions, 245 flow [2024-11-23 23:29:01,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 45 transitions, 222 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-11-23 23:29:01,670 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 180 flow [2024-11-23 23:29:01,671 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2024-11-23 23:29:01,671 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2024-11-23 23:29:01,671 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 180 flow [2024-11-23 23:29:01,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:29:01,671 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:29:01,671 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:29:01,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 23:29:01,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-23 23:29:01,872 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-23 23:29:01,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:29:01,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1043434133, now seen corresponding path program 1 times [2024-11-23 23:29:01,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:29:01,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438801599] [2024-11-23 23:29:01,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:29:01,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:29:01,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:29:01,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 23:29:01,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:29:01,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438801599] [2024-11-23 23:29:01,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438801599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:29:01,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:29:01,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:29:01,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023838529] [2024-11-23 23:29:01,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:29:01,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:29:01,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:29:01,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:29:01,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:29:01,943 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-11-23 23:29:01,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:29:01,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:29:01,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-11-23 23:29:01,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:29:02,075 INFO L124 PetriNetUnfolderBase]: 274/548 cut-off events. [2024-11-23 23:29:02,075 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2024-11-23 23:29:02,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1178 conditions, 548 events. 274/548 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2359 event pairs, 140 based on Foata normal form. 38/567 useless extension candidates. Maximal degree in co-relation 1167. Up to 323 conditions per place. [2024-11-23 23:29:02,077 INFO L140 encePairwiseOnDemand]: 47/49 looper letters, 0 selfloop transitions, 0 changer transitions 57/57 dead transitions. [2024-11-23 23:29:02,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 57 transitions, 308 flow [2024-11-23 23:29:02,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:29:02,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 23:29:02,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-11-23 23:29:02,078 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5170068027210885 [2024-11-23 23:29:02,078 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 180 flow. Second operand 3 states and 76 transitions. [2024-11-23 23:29:02,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 57 transitions, 308 flow [2024-11-23 23:29:02,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 57 transitions, 278 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 23:29:02,080 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2024-11-23 23:29:02,080 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2024-11-23 23:29:02,080 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2024-11-23 23:29:02,080 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2024-11-23 23:29:02,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:29:02,085 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 25 remaining) [2024-11-23 23:29:02,086 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2024-11-23 23:29:02,086 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2024-11-23 23:29:02,086 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2024-11-23 23:29:02,086 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2024-11-23 23:29:02,086 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2024-11-23 23:29:02,086 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2024-11-23 23:29:02,086 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2024-11-23 23:29:02,087 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2024-11-23 23:29:02,087 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2024-11-23 23:29:02,087 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2024-11-23 23:29:02,087 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2024-11-23 23:29:02,087 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 25 remaining) [2024-11-23 23:29:02,087 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 25 remaining) [2024-11-23 23:29:02,087 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 25 remaining) [2024-11-23 23:29:02,087 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2024-11-23 23:29:02,088 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2024-11-23 23:29:02,088 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2024-11-23 23:29:02,088 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2024-11-23 23:29:02,088 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2024-11-23 23:29:02,088 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2024-11-23 23:29:02,088 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2024-11-23 23:29:02,088 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2024-11-23 23:29:02,088 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2024-11-23 23:29:02,089 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2024-11-23 23:29:02,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 23:29:02,089 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:29:02,095 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-23 23:29:02,095 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-23 23:29:02,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 11:29:02 BasicIcfg [2024-11-23 23:29:02,101 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-23 23:29:02,102 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-23 23:29:02,102 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-23 23:29:02,102 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-23 23:29:02,103 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:28:55" (3/4) ... [2024-11-23 23:29:02,105 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-23 23:29:02,107 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-23 23:29:02,108 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-23 23:29:02,108 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-11-23 23:29:02,115 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 90 nodes and edges [2024-11-23 23:29:02,115 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2024-11-23 23:29:02,115 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-11-23 23:29:02,115 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-23 23:29:02,211 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC/witness.graphml [2024-11-23 23:29:02,211 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC/witness.yml [2024-11-23 23:29:02,211 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-23 23:29:02,212 INFO L158 Benchmark]: Toolchain (without parser) took 8583.16ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 118.7MB in the beginning and 253.5MB in the end (delta: -134.9MB). Peak memory consumption was 144.8MB. Max. memory is 16.1GB. [2024-11-23 23:29:02,212 INFO L158 Benchmark]: CDTParser took 0.62ms. Allocated memory is still 142.6MB. Free memory is still 79.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 23:29:02,212 INFO L158 Benchmark]: CACSL2BoogieTranslator took 375.12ms. Allocated memory is still 142.6MB. Free memory was 118.4MB in the beginning and 106.3MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-23 23:29:02,213 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.42ms. Allocated memory is still 142.6MB. Free memory was 106.3MB in the beginning and 104.5MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-23 23:29:02,213 INFO L158 Benchmark]: Boogie Preprocessor took 51.25ms. Allocated memory is still 142.6MB. Free memory was 104.5MB in the beginning and 102.6MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 23:29:02,216 INFO L158 Benchmark]: RCFGBuilder took 1070.83ms. Allocated memory is still 142.6MB. Free memory was 102.3MB in the beginning and 112.9MB in the end (delta: -10.6MB). Peak memory consumption was 55.8MB. Max. memory is 16.1GB. [2024-11-23 23:29:02,216 INFO L158 Benchmark]: TraceAbstraction took 6921.06ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 112.3MB in the beginning and 257.7MB in the end (delta: -145.4MB). Peak memory consumption was 139.3MB. Max. memory is 16.1GB. [2024-11-23 23:29:02,217 INFO L158 Benchmark]: Witness Printer took 109.39ms. Allocated memory is still 427.8MB. Free memory was 257.7MB in the beginning and 253.5MB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 23:29:02,219 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62ms. Allocated memory is still 142.6MB. Free memory is still 79.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 375.12ms. Allocated memory is still 142.6MB. Free memory was 118.4MB in the beginning and 106.3MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.42ms. Allocated memory is still 142.6MB. Free memory was 106.3MB in the beginning and 104.5MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.25ms. Allocated memory is still 142.6MB. Free memory was 104.5MB in the beginning and 102.6MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1070.83ms. Allocated memory is still 142.6MB. Free memory was 102.3MB in the beginning and 112.9MB in the end (delta: -10.6MB). Peak memory consumption was 55.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6921.06ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 112.3MB in the beginning and 257.7MB in the end (delta: -145.4MB). Peak memory consumption was 139.3MB. Max. memory is 16.1GB. * Witness Printer took 109.39ms. Allocated memory is still 427.8MB. Free memory was 257.7MB in the beginning and 253.5MB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 59]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 59]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 75]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 75]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 120]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 120]: 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, 80 locations, 25 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: 6.7s, OverallIterations: 10, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 154 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 123 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 782 IncrementalHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 10 mSDtfsCounter, 782 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=204occurred in iteration=4, InterpolantAutomatonStates: 44, 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 141 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 148 ConstructedInterpolants, 0 QuantifiedInterpolants, 460 SizeOfPredicates, 9 NumberOfNonLiveVariables, 357 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 16 InterpolantComputations, 8 PerfectInterpolantSequences, 91/127 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, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-23 23:29:02,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c9cb890-19f9-444b-83b1-af826e1edce7/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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