./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-series3.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_89f4c69b-e289-41f1-bec7-fe235b1d4e14/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f4c69b-e289-41f1-bec7-fe235b1d4e14/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_89f4c69b-e289-41f1-bec7-fe235b1d4e14/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f4c69b-e289-41f1-bec7-fe235b1d4e14/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-series3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f4c69b-e289-41f1-bec7-fe235b1d4e14/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_89f4c69b-e289-41f1-bec7-fe235b1d4e14/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 c031a4ce44fce05276ee0c322906dbff86776176e55e116d257d2b83e85a253c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:04:16,300 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:04:16,412 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f4c69b-e289-41f1-bec7-fe235b1d4e14/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-24 01:04:16,424 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:04:16,427 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:04:16,473 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:04:16,474 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:04:16,474 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:04:16,474 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:04:16,475 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:04:16,475 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:04:16,475 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:04:16,475 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:04:16,475 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:04:16,475 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:04:16,476 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:04:16,476 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:04:16,476 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:04:16,476 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:04:16,476 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:04:16,476 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:04:16,476 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:04:16,477 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:04:16,477 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:04:16,477 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-24 01:04:16,477 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 01:04:16,477 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:04:16,477 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:04:16,477 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:04:16,477 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:04:16,478 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:04:16,478 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:04:16,478 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:04:16,481 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:04:16,481 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:04:16,481 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:04:16,481 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:04:16,481 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:04:16,482 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:04:16,482 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:04:16,482 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:04:16,482 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:04:16,482 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:04:16,483 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:04:16,483 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:04:16,483 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:04:16,484 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:04:16,484 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:04:16,484 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:04:16,484 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:04:16,484 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_89f4c69b-e289-41f1-bec7-fe235b1d4e14/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 -> c031a4ce44fce05276ee0c322906dbff86776176e55e116d257d2b83e85a253c [2024-11-24 01:04:16,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:04:16,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:04:16,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:04:16,924 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:04:16,925 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:04:16,926 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f4c69b-e289-41f1-bec7-fe235b1d4e14/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/weaver/popl20-more-buffer-series3.wvr.c [2024-11-24 01:04:20,399 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f4c69b-e289-41f1-bec7-fe235b1d4e14/bin/uautomizer-verify-LYvppIcaGC/data/839995376/8af8479b7c5e4af3bad693625fb14ec5/FLAGec4e7c0ad [2024-11-24 01:04:20,829 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:04:20,830 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f4c69b-e289-41f1-bec7-fe235b1d4e14/sv-benchmarks/c/weaver/popl20-more-buffer-series3.wvr.c [2024-11-24 01:04:20,840 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f4c69b-e289-41f1-bec7-fe235b1d4e14/bin/uautomizer-verify-LYvppIcaGC/data/839995376/8af8479b7c5e4af3bad693625fb14ec5/FLAGec4e7c0ad [2024-11-24 01:04:20,859 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f4c69b-e289-41f1-bec7-fe235b1d4e14/bin/uautomizer-verify-LYvppIcaGC/data/839995376/8af8479b7c5e4af3bad693625fb14ec5 [2024-11-24 01:04:20,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:04:20,864 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:04:20,866 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:04:20,866 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:04:20,872 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:04:20,874 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:04:20" (1/1) ... [2024-11-24 01:04:20,876 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@315f27b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:04:20, skipping insertion in model container [2024-11-24 01:04:20,876 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:04:20" (1/1) ... [2024-11-24 01:04:20,912 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:04:21,223 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:04:21,236 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:04:21,279 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:04:21,302 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:04:21,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:04:21 WrapperNode [2024-11-24 01:04:21,303 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:04:21,304 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:04:21,305 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:04:21,305 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:04:21,314 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:04:21" (1/1) ... [2024-11-24 01:04:21,326 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:04:21" (1/1) ... [2024-11-24 01:04:21,381 INFO L138 Inliner]: procedures = 26, calls = 68, calls flagged for inlining = 23, calls inlined = 29, statements flattened = 383 [2024-11-24 01:04:21,381 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:04:21,386 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:04:21,386 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:04:21,386 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:04:21,402 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:04:21" (1/1) ... [2024-11-24 01:04:21,403 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:04:21" (1/1) ... [2024-11-24 01:04:21,408 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:04:21" (1/1) ... [2024-11-24 01:04:21,429 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-24 01:04:21,430 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:04:21" (1/1) ... [2024-11-24 01:04:21,430 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:04:21" (1/1) ... [2024-11-24 01:04:21,443 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:04:21" (1/1) ... [2024-11-24 01:04:21,445 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:04:21" (1/1) ... [2024-11-24 01:04:21,451 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:04:21" (1/1) ... [2024-11-24 01:04:21,454 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:04:21" (1/1) ... [2024-11-24 01:04:21,456 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:04:21" (1/1) ... [2024-11-24 01:04:21,460 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:04:21,461 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:04:21,462 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:04:21,462 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:04:21,463 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:04:21" (1/1) ... [2024-11-24 01:04:21,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:04:21,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f4c69b-e289-41f1-bec7-fe235b1d4e14/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:04:21,511 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f4c69b-e289-41f1-bec7-fe235b1d4e14/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:04:21,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f4c69b-e289-41f1-bec7-fe235b1d4e14/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:04:21,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:04:21,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 01:04:21,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 01:04:21,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 01:04:21,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 01:04:21,552 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-24 01:04:21,552 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-24 01:04:21,552 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-24 01:04:21,552 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-24 01:04:21,552 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-24 01:04:21,553 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-24 01:04:21,553 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-24 01:04:21,554 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-24 01:04:21,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:04:21,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 01:04:21,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-24 01:04:21,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-24 01:04:21,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-24 01:04:21,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:04:21,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:04:21,559 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-24 01:04:21,770 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:04:21,773 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:04:22,864 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-24 01:04:22,866 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:04:23,927 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:04:23,927 INFO L312 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-24 01:04:23,928 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:04:23 BoogieIcfgContainer [2024-11-24 01:04:23,928 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:04:23,931 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:04:23,932 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:04:23,938 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:04:23,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:04:20" (1/3) ... [2024-11-24 01:04:23,939 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39582cb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:04:23, skipping insertion in model container [2024-11-24 01:04:23,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:04:21" (2/3) ... [2024-11-24 01:04:23,940 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39582cb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:04:23, skipping insertion in model container [2024-11-24 01:04:23,940 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:04:23" (3/3) ... [2024-11-24 01:04:23,942 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series3.wvr.c [2024-11-24 01:04:23,963 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:04:23,965 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-buffer-series3.wvr.c that has 5 procedures, 82 locations, 1 initial locations, 7 loop locations, and 32 error locations. [2024-11-24 01:04:23,966 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-24 01:04:24,219 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-24 01:04:24,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 88 transitions, 204 flow [2024-11-24 01:04:24,394 INFO L124 PetriNetUnfolderBase]: 7/84 cut-off events. [2024-11-24 01:04:24,399 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-24 01:04:24,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 84 events. 7/84 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 292 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2024-11-24 01:04:24,407 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 88 transitions, 204 flow [2024-11-24 01:04:24,413 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 82 transitions, 185 flow [2024-11-24 01:04:24,431 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:04:24,451 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;@463d4949, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:04:24,451 INFO L334 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2024-11-24 01:04:24,457 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-24 01:04:24,459 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-24 01:04:24,459 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 01:04:24,460 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:04:24,460 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-24 01:04:24,461 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-24 01:04:24,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:04:24,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1246305, now seen corresponding path program 1 times [2024-11-24 01:04:24,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:04:24,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061520646] [2024-11-24 01:04:24,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:04:24,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:04:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:04:24,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:04:24,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:04:24,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061520646] [2024-11-24 01:04:24,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061520646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:04:24,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:04:24,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:04:24,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350135835] [2024-11-24 01:04:24,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:04:24,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:04:24,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:04:24,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:04:24,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:04:25,026 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 88 [2024-11-24 01:04:25,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 82 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:04:25,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:04:25,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 88 [2024-11-24 01:04:25,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:04:36,792 INFO L124 PetriNetUnfolderBase]: 44545/58526 cut-off events. [2024-11-24 01:04:36,792 INFO L125 PetriNetUnfolderBase]: For 1029/1029 co-relation queries the response was YES. [2024-11-24 01:04:36,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115814 conditions, 58526 events. 44545/58526 cut-off events. For 1029/1029 co-relation queries the response was YES. Maximal size of possible extension queue 6114. Compared 413930 event pairs, 32724 based on Foata normal form. 3/24540 useless extension candidates. Maximal degree in co-relation 109886. Up to 55313 conditions per place. [2024-11-24 01:04:37,211 INFO L140 encePairwiseOnDemand]: 65/88 looper letters, 55 selfloop transitions, 10 changer transitions 0/84 dead transitions. [2024-11-24 01:04:37,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 84 transitions, 319 flow [2024-11-24 01:04:37,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:04:37,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 01:04:37,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 170 transitions. [2024-11-24 01:04:37,230 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48295454545454547 [2024-11-24 01:04:37,233 INFO L175 Difference]: Start difference. First operand has 88 places, 82 transitions, 185 flow. Second operand 4 states and 170 transitions. [2024-11-24 01:04:37,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 84 transitions, 319 flow [2024-11-24 01:04:37,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 84 transitions, 306 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-24 01:04:37,384 INFO L231 Difference]: Finished difference. Result has 80 places, 84 transitions, 246 flow [2024-11-24 01:04:37,387 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=246, PETRI_PLACES=80, PETRI_TRANSITIONS=84} [2024-11-24 01:04:37,392 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, -8 predicate places. [2024-11-24 01:04:37,393 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 84 transitions, 246 flow [2024-11-24 01:04:37,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:04:37,394 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:04:37,394 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-24 01:04:37,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 01:04:37,395 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-24 01:04:37,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:04:37,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1524768845, now seen corresponding path program 1 times [2024-11-24 01:04:37,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:04:37,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671458478] [2024-11-24 01:04:37,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:04:37,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:04:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:04:37,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:04:37,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:04:37,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671458478] [2024-11-24 01:04:37,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671458478] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:04:37,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927099796] [2024-11-24 01:04:37,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:04:37,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:04:37,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f4c69b-e289-41f1-bec7-fe235b1d4e14/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:04:37,666 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f4c69b-e289-41f1-bec7-fe235b1d4e14/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:04:37,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f4c69b-e289-41f1-bec7-fe235b1d4e14/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:04:37,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:04:37,807 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 01:04:37,811 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:04:37,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:04:37,885 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:04:37,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927099796] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:04:37,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:04:37,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-24 01:04:37,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656555233] [2024-11-24 01:04:37,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:04:37,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:04:37,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:04:37,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:04:37,887 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:04:37,928 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 88 [2024-11-24 01:04:37,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 84 transitions, 246 flow. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:04:37,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:04:37,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 88 [2024-11-24 01:04:37,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:04:45,769 INFO L124 PetriNetUnfolderBase]: 44545/58523 cut-off events. [2024-11-24 01:04:45,770 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-24 01:04:45,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115110 conditions, 58523 events. 44545/58523 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 6114. Compared 413573 event pairs, 32724 based on Foata normal form. 3/24542 useless extension candidates. Maximal degree in co-relation 115037. Up to 55298 conditions per place. [2024-11-24 01:04:46,210 INFO L140 encePairwiseOnDemand]: 75/88 looper letters, 45 selfloop transitions, 17 changer transitions 0/81 dead transitions. [2024-11-24 01:04:46,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 81 transitions, 358 flow [2024-11-24 01:04:46,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:04:46,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 01:04:46,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 203 transitions. [2024-11-24 01:04:46,217 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38446969696969696 [2024-11-24 01:04:46,219 INFO L175 Difference]: Start difference. First operand has 80 places, 84 transitions, 246 flow. Second operand 6 states and 203 transitions. [2024-11-24 01:04:46,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 81 transitions, 358 flow [2024-11-24 01:04:46,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 81 transitions, 358 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-24 01:04:46,224 INFO L231 Difference]: Finished difference. Result has 82 places, 81 transitions, 268 flow [2024-11-24 01:04:46,226 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=268, PETRI_PLACES=82, PETRI_TRANSITIONS=81} [2024-11-24 01:04:46,227 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, -6 predicate places. [2024-11-24 01:04:46,227 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 81 transitions, 268 flow [2024-11-24 01:04:46,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:04:46,227 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:04:46,227 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-24 01:04:46,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f4c69b-e289-41f1-bec7-fe235b1d4e14/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 01:04:46,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f4c69b-e289-41f1-bec7-fe235b1d4e14/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-24 01:04:46,432 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-24 01:04:46,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:04:46,432 INFO L85 PathProgramCache]: Analyzing trace with hash -23192665, now seen corresponding path program 1 times [2024-11-24 01:04:46,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:04:46,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486097551] [2024-11-24 01:04:46,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:04:46,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:04:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:04:46,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:04:46,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:04:46,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486097551] [2024-11-24 01:04:46,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486097551] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:04:46,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266522544] [2024-11-24 01:04:46,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:04:46,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:04:46,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f4c69b-e289-41f1-bec7-fe235b1d4e14/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:04:46,589 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f4c69b-e289-41f1-bec7-fe235b1d4e14/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:04:46,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f4c69b-e289-41f1-bec7-fe235b1d4e14/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:04:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:04:46,727 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 01:04:46,729 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:04:46,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:04:46,772 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:04:46,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:04:46,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266522544] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:04:46,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:04:46,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-24 01:04:46,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604622715] [2024-11-24 01:04:46,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:04:46,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 01:04:46,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:04:46,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 01:04:46,835 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:04:46,882 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 88 [2024-11-24 01:04:46,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 81 transitions, 268 flow. Second operand has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:04:46,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:04:46,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 88 [2024-11-24 01:04:46,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand