./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 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-buffer-series3.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 20:46:57,916 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 20:46:57,977 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-12 20:46:57,982 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 20:46:57,984 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 20:46:58,013 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 20:46:58,015 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 20:46:58,016 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 20:46:58,016 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 20:46:58,016 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 20:46:58,017 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 20:46:58,017 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 20:46:58,018 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 20:46:58,019 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 20:46:58,020 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 20:46:58,020 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 20:46:58,020 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 20:46:58,020 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 20:46:58,021 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 20:46:58,021 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 20:46:58,021 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 20:46:58,024 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 20:46:58,025 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 20:46:58,025 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 20:46:58,025 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 20:46:58,025 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-12 20:46:58,025 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 20:46:58,025 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 20:46:58,026 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 20:46:58,026 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 20:46:58,026 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 20:46:58,026 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 20:46:58,026 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 20:46:58,026 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 20:46:58,027 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:46:58,027 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 20:46:58,027 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 20:46:58,027 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 20:46:58,027 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 20:46:58,027 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 20:46:58,028 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 20:46:58,029 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 20:46:58,029 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 20:46:58,029 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 20:46:58,030 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c031a4ce44fce05276ee0c322906dbff86776176e55e116d257d2b83e85a253c [2024-11-12 20:46:58,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 20:46:58,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 20:46:58,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 20:46:58,276 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 20:46:58,277 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 20:46:58,278 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-buffer-series3.wvr.c [2024-11-12 20:46:59,667 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 20:46:59,843 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 20:46:59,844 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-series3.wvr.c [2024-11-12 20:46:59,859 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f49d9108/86375dc5ef7c4565bad27cc41fef7269/FLAG8916bf656 [2024-11-12 20:47:00,233 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f49d9108/86375dc5ef7c4565bad27cc41fef7269 [2024-11-12 20:47:00,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 20:47:00,238 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 20:47:00,239 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 20:47:00,239 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 20:47:00,245 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 20:47:00,245 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:47:00" (1/1) ... [2024-11-12 20:47:00,246 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43a91c90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:00, skipping insertion in model container [2024-11-12 20:47:00,246 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:47:00" (1/1) ... [2024-11-12 20:47:00,271 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 20:47:00,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:47:00,490 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 20:47:00,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:47:00,586 INFO L204 MainTranslator]: Completed translation [2024-11-12 20:47:00,590 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:00 WrapperNode [2024-11-12 20:47:00,590 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 20:47:00,592 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 20:47:00,592 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 20:47:00,592 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 20:47:00,606 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:00" (1/1) ... [2024-11-12 20:47:00,619 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:00" (1/1) ... [2024-11-12 20:47:00,695 INFO L138 Inliner]: procedures = 26, calls = 68, calls flagged for inlining = 23, calls inlined = 29, statements flattened = 390 [2024-11-12 20:47:00,696 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 20:47:00,698 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 20:47:00,699 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 20:47:00,699 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 20:47:00,707 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:00" (1/1) ... [2024-11-12 20:47:00,707 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:00" (1/1) ... [2024-11-12 20:47:00,711 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:00" (1/1) ... [2024-11-12 20:47:00,725 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]. [2024-11-12 20:47:00,725 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:00" (1/1) ... [2024-11-12 20:47:00,725 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:00" (1/1) ... [2024-11-12 20:47:00,733 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:00" (1/1) ... [2024-11-12 20:47:00,737 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:00" (1/1) ... [2024-11-12 20:47:00,739 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:00" (1/1) ... [2024-11-12 20:47:00,740 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:00" (1/1) ... [2024-11-12 20:47:00,743 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 20:47:00,744 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 20:47:00,744 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 20:47:00,744 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 20:47:00,745 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:00" (1/1) ... [2024-11-12 20:47:00,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:47:00,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:47:00,781 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-12 20:47:00,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-12 20:47:00,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 20:47:00,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 20:47:00,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 20:47:00,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 20:47:00,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 20:47:00,822 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 20:47:00,822 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 20:47:00,822 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 20:47:00,823 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 20:47:00,824 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-12 20:47:00,824 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-12 20:47:00,824 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-12 20:47:00,824 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-12 20:47:00,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 20:47:00,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 20:47:00,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-12 20:47:00,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-12 20:47:00,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 20:47:00,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 20:47:00,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 20:47:00,827 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 20:47:00,945 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 20:47:00,947 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 20:47:01,399 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 20:47:01,399 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 20:47:01,868 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 20:47:01,869 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-12 20:47:01,869 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:47:01 BoogieIcfgContainer [2024-11-12 20:47:01,871 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 20:47:01,872 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 20:47:01,874 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 20:47:01,881 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 20:47:01,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:47:00" (1/3) ... [2024-11-12 20:47:01,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c18523f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:47:01, skipping insertion in model container [2024-11-12 20:47:01,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:47:00" (2/3) ... [2024-11-12 20:47:01,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c18523f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:47:01, skipping insertion in model container [2024-11-12 20:47:01,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:47:01" (3/3) ... [2024-11-12 20:47:01,883 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series3.wvr.c [2024-11-12 20:47:01,898 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 20:47:01,898 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-11-12 20:47:01,899 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 20:47:02,074 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-12 20:47:02,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 88 transitions, 204 flow [2024-11-12 20:47:02,163 INFO L124 PetriNetUnfolderBase]: 7/84 cut-off events. [2024-11-12 20:47:02,164 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-12 20:47:02,169 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 12. Compared 276 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. [2024-11-12 20:47:02,170 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 88 transitions, 204 flow [2024-11-12 20:47:02,173 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 82 transitions, 185 flow [2024-11-12 20:47:02,186 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:47:02,192 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;@47be98c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:47:02,193 INFO L334 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2024-11-12 20:47:02,197 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:47:02,197 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-12 20:47:02,197 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:47:02,198 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:02,198 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-12 20:47:02,199 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-12 20:47:02,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:02,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1240749, now seen corresponding path program 1 times [2024-11-12 20:47:02,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:02,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596449310] [2024-11-12 20:47:02,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:02,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:02,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:02,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:02,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596449310] [2024-11-12 20:47:02,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596449310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:02,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:47:02,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:47:02,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598859288] [2024-11-12 20:47:02,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:02,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:47:02,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:02,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:47:02,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:47:02,555 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 88 [2024-11-12 20:47:02,558 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) [2024-11-12 20:47:02,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:02,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 88 [2024-11-12 20:47:02,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:08,953 INFO L124 PetriNetUnfolderBase]: 44545/58430 cut-off events. [2024-11-12 20:47:08,954 INFO L125 PetriNetUnfolderBase]: For 885/885 co-relation queries the response was YES. [2024-11-12 20:47:09,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115718 conditions, 58430 events. 44545/58430 cut-off events. For 885/885 co-relation queries the response was YES. Maximal size of possible extension queue 6108. Compared 412015 event pairs, 32724 based on Foata normal form. 3/24551 useless extension candidates. Maximal degree in co-relation 109790. Up to 55313 conditions per place. [2024-11-12 20:47:09,372 INFO L140 encePairwiseOnDemand]: 65/88 looper letters, 55 selfloop transitions, 10 changer transitions 0/84 dead transitions. [2024-11-12 20:47:09,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 84 transitions, 319 flow [2024-11-12 20:47:09,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:47:09,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:47:09,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 170 transitions. [2024-11-12 20:47:09,402 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48295454545454547 [2024-11-12 20:47:09,404 INFO L175 Difference]: Start difference. First operand has 88 places, 82 transitions, 185 flow. Second operand 4 states and 170 transitions. [2024-11-12 20:47:09,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 84 transitions, 319 flow [2024-11-12 20:47:09,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 84 transitions, 306 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-12 20:47:09,507 INFO L231 Difference]: Finished difference. Result has 80 places, 84 transitions, 246 flow [2024-11-12 20:47:09,511 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} [2024-11-12 20:47:09,515 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, -8 predicate places. [2024-11-12 20:47:09,516 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 84 transitions, 246 flow [2024-11-12 20:47:09,516 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) [2024-11-12 20:47:09,516 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:09,517 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-12 20:47:09,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 20:47:09,517 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-12 20:47:09,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:09,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1690314339, now seen corresponding path program 1 times [2024-11-12 20:47:09,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:09,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889914718] [2024-11-12 20:47:09,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:09,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:09,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:09,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:09,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889914718] [2024-11-12 20:47:09,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889914718] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:47:09,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057807143] [2024-11-12 20:47:09,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:09,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:09,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:47:09,650 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:47:09,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 20:47:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:09,741 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:47:09,744 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:47:09,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:09,780 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 20:47:09,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057807143] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:09,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:47:09,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-12 20:47:09,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529498992] [2024-11-12 20:47:09,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:09,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:47:09,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:09,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:47:09,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-12 20:47:09,805 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 88 [2024-11-12 20:47:09,805 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) [2024-11-12 20:47:09,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:09,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 88 [2024-11-12 20:47:09,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:16,341 INFO L124 PetriNetUnfolderBase]: 44545/58427 cut-off events. [2024-11-12 20:47:16,342 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-12 20:47:16,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115014 conditions, 58427 events. 44545/58427 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 6108. Compared 411872 event pairs, 32724 based on Foata normal form. 3/24553 useless extension candidates. Maximal degree in co-relation 114941. Up to 55298 conditions per place. [2024-11-12 20:47:16,810 INFO L140 encePairwiseOnDemand]: 75/88 looper letters, 45 selfloop transitions, 17 changer transitions 0/81 dead transitions. [2024-11-12 20:47:16,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 81 transitions, 358 flow [2024-11-12 20:47:16,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:47:16,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:47:16,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 203 transitions. [2024-11-12 20:47:16,812 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38446969696969696 [2024-11-12 20:47:16,812 INFO L175 Difference]: Start difference. First operand has 80 places, 84 transitions, 246 flow. Second operand 6 states and 203 transitions. [2024-11-12 20:47:16,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 81 transitions, 358 flow [2024-11-12 20:47:16,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 81 transitions, 358 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 20:47:16,815 INFO L231 Difference]: Finished difference. Result has 82 places, 81 transitions, 268 flow [2024-11-12 20:47:16,815 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} [2024-11-12 20:47:16,816 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, -6 predicate places. [2024-11-12 20:47:16,816 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 81 transitions, 268 flow [2024-11-12 20:47:16,816 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) [2024-11-12 20:47:16,816 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:16,816 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-12 20:47:16,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 20:47:17,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:17,017 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-12 20:47:17,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:17,018 INFO L85 PathProgramCache]: Analyzing trace with hash -860135710, now seen corresponding path program 1 times [2024-11-12 20:47:17,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:17,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473758029] [2024-11-12 20:47:17,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:17,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:17,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:17,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:17,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473758029] [2024-11-12 20:47:17,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473758029] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:47:17,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183861118] [2024-11-12 20:47:17,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:17,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:47:17,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:47:17,188 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:47:17,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 20:47:17,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:17,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:47:17,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:47:17,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:17,295 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:47:17,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:17,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183861118] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:47:17,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:47:17,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-12 20:47:17,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295998953] [2024-11-12 20:47:17,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:47:17,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-12 20:47:17,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:17,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-12 20:47:17,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-12 20:47:17,360 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 88 [2024-11-12 20:47:17,361 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) [2024-11-12 20:47:17,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:17,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 88 [2024-11-12 20:47:17,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:23,317 INFO L124 PetriNetUnfolderBase]: 44554/58463 cut-off events. [2024-11-12 20:47:23,317 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-11-12 20:47:23,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115155 conditions, 58463 events. 44554/58463 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 6108. Compared 412566 event pairs, 32724 based on Foata normal form. 9/24595 useless extension candidates. Maximal degree in co-relation 114943. Up to 55313 conditions per place. [2024-11-12 20:47:23,681 INFO L140 encePairwiseOnDemand]: 75/88 looper letters, 52 selfloop transitions, 37 changer transitions 0/108 dead transitions. [2024-11-12 20:47:23,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 108 transitions, 620 flow [2024-11-12 20:47:23,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:47:23,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 20:47:23,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 328 transitions. [2024-11-12 20:47:23,686 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-11-12 20:47:23,687 INFO L175 Difference]: Start difference. First operand has 82 places, 81 transitions, 268 flow. Second operand 10 states and 328 transitions. [2024-11-12 20:47:23,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 108 transitions, 620 flow [2024-11-12 20:47:23,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 108 transitions, 537 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-12 20:47:23,692 INFO L231 Difference]: Finished difference. Result has 89 places, 108 transitions, 483 flow [2024-11-12 20:47:23,692 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=230, 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=10, PETRI_FLOW=483, PETRI_PLACES=89, PETRI_TRANSITIONS=108} [2024-11-12 20:47:23,693 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 1 predicate places. [2024-11-12 20:47:23,694 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 108 transitions, 483 flow [2024-11-12 20:47:23,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2024-11-12 20:47:23,694 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:23,694 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:23,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-12 20:47:23,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-12 20:47:23,895 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-12 20:47:23,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:23,895 INFO L85 PathProgramCache]: Analyzing trace with hash -2084421021, now seen corresponding path program 1 times [2024-11-12 20:47:23,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:23,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728559133] [2024-11-12 20:47:23,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:23,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:23,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:23,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:23,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:23,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728559133] [2024-11-12 20:47:23,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728559133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:23,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:47:23,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 20:47:23,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097161673] [2024-11-12 20:47:23,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:23,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:47:23,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:23,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:47:23,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:47:23,965 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 88 [2024-11-12 20:47:23,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 108 transitions, 483 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2024-11-12 20:47:23,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:23,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 88 [2024-11-12 20:47:23,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:47:31,381 INFO L124 PetriNetUnfolderBase]: 47019/63497 cut-off events. [2024-11-12 20:47:31,382 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2024-11-12 20:47:31,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125101 conditions, 63497 events. 47019/63497 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 6045. Compared 475569 event pairs, 8424 based on Foata normal form. 0/30510 useless extension candidates. Maximal degree in co-relation 125003. Up to 46561 conditions per place. [2024-11-12 20:47:31,858 INFO L140 encePairwiseOnDemand]: 84/88 looper letters, 118 selfloop transitions, 2 changer transitions 0/142 dead transitions. [2024-11-12 20:47:31,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 142 transitions, 798 flow [2024-11-12 20:47:31,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:47:31,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:47:31,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 173 transitions. [2024-11-12 20:47:31,860 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6553030303030303 [2024-11-12 20:47:31,860 INFO L175 Difference]: Start difference. First operand has 89 places, 108 transitions, 483 flow. Second operand 3 states and 173 transitions. [2024-11-12 20:47:31,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 142 transitions, 798 flow [2024-11-12 20:47:31,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 142 transitions, 761 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-12 20:47:31,865 INFO L231 Difference]: Finished difference. Result has 90 places, 109 transitions, 460 flow [2024-11-12 20:47:31,865 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=460, PETRI_PLACES=90, PETRI_TRANSITIONS=109} [2024-11-12 20:47:31,866 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 2 predicate places. [2024-11-12 20:47:31,866 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 109 transitions, 460 flow [2024-11-12 20:47:31,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2024-11-12 20:47:31,867 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:47:31,867 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:47:31,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 20:47:31,867 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-11-12 20:47:31,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:47:31,868 INFO L85 PathProgramCache]: Analyzing trace with hash -192540887, now seen corresponding path program 1 times [2024-11-12 20:47:31,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:47:31,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883177914] [2024-11-12 20:47:31,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:47:31,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:47:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:47:31,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:47:31,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:47:31,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883177914] [2024-11-12 20:47:31,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883177914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:47:31,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:47:31,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:47:31,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458293373] [2024-11-12 20:47:31,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:47:31,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:47:31,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:47:31,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:47:31,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:47:31,982 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 88 [2024-11-12 20:47:31,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 109 transitions, 460 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2024-11-12 20:47:31,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:47:31,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 88 [2024-11-12 20:47:31,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand