./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc 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-mult.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 e5124dd4a5a155d8a4e322a35428820633f9eccdd993e14120e650d1ba1fbebe --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:07:21,864 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:07:21,949 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 14:07:21,955 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:07:21,955 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:07:21,979 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:07:21,980 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:07:21,980 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:07:21,981 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:07:21,981 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:07:21,981 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 14:07:21,982 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 14:07:21,983 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:07:21,984 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:07:21,985 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:07:21,985 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:07:21,986 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 14:07:21,986 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 14:07:21,986 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:07:21,986 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 14:07:21,987 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:07:21,990 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 14:07:21,991 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 14:07:21,991 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 14:07:21,991 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:07:21,991 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 14:07:21,992 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:07:21,992 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 14:07:21,992 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:07:21,992 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:07:21,993 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:07:21,993 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:07:21,993 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 14:07:21,993 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 14:07:21,994 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:07:21,994 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:07:21,994 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 14:07:21,994 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 14:07:21,995 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:07:21,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 14:07:21,995 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 14:07:21,996 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 14:07:21,997 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 14:07:21,997 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 14:07:21,998 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e5124dd4a5a155d8a4e322a35428820633f9eccdd993e14120e650d1ba1fbebe [2024-11-19 14:07:22,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:07:22,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:07:22,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:07:22,347 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:07:22,348 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:07:22,349 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2024-11-19 14:07:23,932 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:07:24,160 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:07:24,160 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2024-11-19 14:07:24,173 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9c9d4205/6c25d733f8464088b0e4ba81699a8939/FLAG48a29d6b3 [2024-11-19 14:07:24,195 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9c9d4205/6c25d733f8464088b0e4ba81699a8939 [2024-11-19 14:07:24,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:07:24,199 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:07:24,201 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:07:24,201 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:07:24,206 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:07:24,207 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:07:24" (1/1) ... [2024-11-19 14:07:24,208 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78b90616 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:24, skipping insertion in model container [2024-11-19 14:07:24,208 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:07:24" (1/1) ... [2024-11-19 14:07:24,233 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:07:24,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:07:24,515 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:07:24,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:07:24,566 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:07:24,567 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:24 WrapperNode [2024-11-19 14:07:24,567 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:07:24,568 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:07:24,568 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:07:24,568 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:07:24,577 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:24" (1/1) ... [2024-11-19 14:07:24,591 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:24" (1/1) ... [2024-11-19 14:07:24,677 INFO L138 Inliner]: procedures = 26, calls = 61, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 344 [2024-11-19 14:07:24,680 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:07:24,684 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:07:24,685 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:07:24,685 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:07:24,695 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:24" (1/1) ... [2024-11-19 14:07:24,696 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:24" (1/1) ... [2024-11-19 14:07:24,700 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:24" (1/1) ... [2024-11-19 14:07:24,724 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-19 14:07:24,724 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:24" (1/1) ... [2024-11-19 14:07:24,725 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:24" (1/1) ... [2024-11-19 14:07:24,733 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:24" (1/1) ... [2024-11-19 14:07:24,738 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:24" (1/1) ... [2024-11-19 14:07:24,740 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:24" (1/1) ... [2024-11-19 14:07:24,742 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:24" (1/1) ... [2024-11-19 14:07:24,746 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:07:24,747 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:07:24,750 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:07:24,750 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:07:24,751 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:24" (1/1) ... [2024-11-19 14:07:24,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:07:24,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:24,791 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) [2024-11-19 14:07:24,800 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 [2024-11-19 14:07:24,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 14:07:24,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 14:07:24,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 14:07:24,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 14:07:24,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 14:07:24,850 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 14:07:24,850 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 14:07:24,850 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 14:07:24,850 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 14:07:24,852 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 14:07:24,852 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 14:07:24,852 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-19 14:07:24,852 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-19 14:07:24,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 14:07:24,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 14:07:24,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 14:07:24,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 14:07:24,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 14:07:24,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:07:24,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:07:24,860 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 14:07:24,991 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:07:24,994 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:07:25,522 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 14:07:25,524 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:07:26,069 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:07:26,070 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-19 14:07:26,070 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:07:26 BoogieIcfgContainer [2024-11-19 14:07:26,070 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:07:26,072 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 14:07:26,074 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 14:07:26,077 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 14:07:26,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:07:24" (1/3) ... [2024-11-19 14:07:26,078 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5253e2f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:07:26, skipping insertion in model container [2024-11-19 14:07:26,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:07:24" (2/3) ... [2024-11-19 14:07:26,078 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5253e2f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:07:26, skipping insertion in model container [2024-11-19 14:07:26,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:07:26" (3/3) ... [2024-11-19 14:07:26,080 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult.wvr.c [2024-11-19 14:07:26,100 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 14:07:26,101 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2024-11-19 14:07:26,101 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 14:07:26,279 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-19 14:07:26,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 82 transitions, 192 flow [2024-11-19 14:07:26,375 INFO L124 PetriNetUnfolderBase]: 6/78 cut-off events. [2024-11-19 14:07:26,375 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-19 14:07:26,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 78 events. 6/78 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 269 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2024-11-19 14:07:26,382 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 82 transitions, 192 flow [2024-11-19 14:07:26,387 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 76 transitions, 173 flow [2024-11-19 14:07:26,401 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:07:26,410 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;@784184e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:07:26,411 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-11-19 14:07:26,414 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:07:26,415 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-19 14:07:26,415 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:07:26,415 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:26,416 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 14:07:26,416 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-19 14:07:26,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:26,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1083356, now seen corresponding path program 1 times [2024-11-19 14:07:26,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:26,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206787003] [2024-11-19 14:07:26,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:26,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:26,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:26,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:26,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206787003] [2024-11-19 14:07:26,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206787003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:26,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:26,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:07:26,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92464069] [2024-11-19 14:07:26,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:26,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:07:26,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:26,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:07:26,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:07:26,822 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2024-11-19 14:07:26,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 76 transitions, 173 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2024-11-19 14:07:26,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:26,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2024-11-19 14:07:26,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:33,681 INFO L124 PetriNetUnfolderBase]: 38398/51624 cut-off events. [2024-11-19 14:07:33,681 INFO L125 PetriNetUnfolderBase]: For 1386/1386 co-relation queries the response was YES. [2024-11-19 14:07:33,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101334 conditions, 51624 events. 38398/51624 cut-off events. For 1386/1386 co-relation queries the response was YES. Maximal size of possible extension queue 5366. Compared 375403 event pairs, 28674 based on Foata normal form. 2/24152 useless extension candidates. Maximal degree in co-relation 95424. Up to 47902 conditions per place. [2024-11-19 14:07:34,164 INFO L140 encePairwiseOnDemand]: 63/82 looper letters, 49 selfloop transitions, 7 changer transitions 0/74 dead transitions. [2024-11-19 14:07:34,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 74 transitions, 281 flow [2024-11-19 14:07:34,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:07:34,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:07:34,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2024-11-19 14:07:34,179 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2024-11-19 14:07:34,181 INFO L175 Difference]: Start difference. First operand has 83 places, 76 transitions, 173 flow. Second operand 4 states and 156 transitions. [2024-11-19 14:07:34,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 74 transitions, 281 flow [2024-11-19 14:07:34,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 74 transitions, 268 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-19 14:07:34,256 INFO L231 Difference]: Finished difference. Result has 74 places, 74 transitions, 204 flow [2024-11-19 14:07:34,259 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=74, PETRI_TRANSITIONS=74} [2024-11-19 14:07:34,263 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -9 predicate places. [2024-11-19 14:07:34,264 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 74 transitions, 204 flow [2024-11-19 14:07:34,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2024-11-19 14:07:34,265 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:34,265 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-19 14:07:34,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 14:07:34,266 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-19 14:07:34,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:34,266 INFO L85 PathProgramCache]: Analyzing trace with hash -2084387767, now seen corresponding path program 1 times [2024-11-19 14:07:34,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:34,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636763681] [2024-11-19 14:07:34,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:34,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:34,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:34,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:34,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:34,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636763681] [2024-11-19 14:07:34,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636763681] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:34,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213595101] [2024-11-19 14:07:34,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:34,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:34,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:34,452 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) [2024-11-19 14:07:34,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 14:07:34,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:34,568 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:07:34,572 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:34,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:34,627 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:07:34,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213595101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:34,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:07:34,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 14:07:34,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759629107] [2024-11-19 14:07:34,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:34,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:07:34,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:34,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:07:34,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:07:34,655 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2024-11-19 14:07:34,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 74 transitions, 204 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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) [2024-11-19 14:07:34,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:34,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2024-11-19 14:07:34,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:39,778 INFO L124 PetriNetUnfolderBase]: 38398/51622 cut-off events. [2024-11-19 14:07:39,778 INFO L125 PetriNetUnfolderBase]: For 201/201 co-relation queries the response was YES. [2024-11-19 14:07:39,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100632 conditions, 51622 events. 38398/51622 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 5366. Compared 375063 event pairs, 28674 based on Foata normal form. 2/24153 useless extension candidates. Maximal degree in co-relation 100582. Up to 47892 conditions per place. [2024-11-19 14:07:40,099 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 42 selfloop transitions, 12 changer transitions 0/72 dead transitions. [2024-11-19 14:07:40,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 72 transitions, 304 flow [2024-11-19 14:07:40,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:07:40,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:07:40,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2024-11-19 14:07:40,101 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3821138211382114 [2024-11-19 14:07:40,101 INFO L175 Difference]: Start difference. First operand has 74 places, 74 transitions, 204 flow. Second operand 6 states and 188 transitions. [2024-11-19 14:07:40,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 72 transitions, 304 flow [2024-11-19 14:07:40,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 72 transitions, 304 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:07:40,105 INFO L231 Difference]: Finished difference. Result has 77 places, 72 transitions, 220 flow [2024-11-19 14:07:40,105 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=220, PETRI_PLACES=77, PETRI_TRANSITIONS=72} [2024-11-19 14:07:40,105 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -6 predicate places. [2024-11-19 14:07:40,106 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 72 transitions, 220 flow [2024-11-19 14:07:40,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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) [2024-11-19 14:07:40,107 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:40,107 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-19 14:07:40,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 14:07:40,308 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 [2024-11-19 14:07:40,308 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-19 14:07:40,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:40,309 INFO L85 PathProgramCache]: Analyzing trace with hash -191510237, now seen corresponding path program 1 times [2024-11-19 14:07:40,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:40,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127683375] [2024-11-19 14:07:40,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:40,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:40,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:40,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:40,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:40,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127683375] [2024-11-19 14:07:40,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127683375] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:40,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191229555] [2024-11-19 14:07:40,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:40,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:40,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:40,403 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) [2024-11-19 14:07:40,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 14:07:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:40,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:07:40,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:40,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:40,534 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:07:40,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:40,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191229555] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:07:40,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:07:40,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-19 14:07:40,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957199098] [2024-11-19 14:07:40,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:07:40,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 14:07:40,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:40,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 14:07:40,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 14:07:40,609 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2024-11-19 14:07:40,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 220 flow. Second operand has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 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) [2024-11-19 14:07:40,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:40,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2024-11-19 14:07:40,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:45,781 INFO L124 PetriNetUnfolderBase]: 38404/51646 cut-off events. [2024-11-19 14:07:45,781 INFO L125 PetriNetUnfolderBase]: For 243/243 co-relation queries the response was YES. [2024-11-19 14:07:45,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100726 conditions, 51646 events. 38404/51646 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 5366. Compared 375582 event pairs, 28674 based on Foata normal form. 6/24180 useless extension candidates. Maximal degree in co-relation 100584. Up to 47903 conditions per place. [2024-11-19 14:07:46,162 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 47 selfloop transitions, 25 changer transitions 0/90 dead transitions. [2024-11-19 14:07:46,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 90 transitions, 478 flow [2024-11-19 14:07:46,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:07:46,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:07:46,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 298 transitions. [2024-11-19 14:07:46,165 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36341463414634145 [2024-11-19 14:07:46,165 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 220 flow. Second operand 10 states and 298 transitions. [2024-11-19 14:07:46,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 90 transitions, 478 flow [2024-11-19 14:07:46,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 90 transitions, 420 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-19 14:07:46,169 INFO L231 Difference]: Finished difference. Result has 84 places, 90 transitions, 360 flow [2024-11-19 14:07:46,169 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=360, PETRI_PLACES=84, PETRI_TRANSITIONS=90} [2024-11-19 14:07:46,170 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, 1 predicate places. [2024-11-19 14:07:46,171 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 90 transitions, 360 flow [2024-11-19 14:07:46,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 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) [2024-11-19 14:07:46,172 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:46,172 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:46,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 14:07:46,373 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 [2024-11-19 14:07:46,374 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-19 14:07:46,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:46,374 INFO L85 PathProgramCache]: Analyzing trace with hash -823509526, now seen corresponding path program 1 times [2024-11-19 14:07:46,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:46,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975650964] [2024-11-19 14:07:46,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:46,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:46,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:46,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:46,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:46,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975650964] [2024-11-19 14:07:46,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975650964] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:46,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:46,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:07:46,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46720099] [2024-11-19 14:07:46,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:46,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:07:46,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:46,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:07:46,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:07:46,521 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-11-19 14:07:46,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 90 transitions, 360 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2024-11-19 14:07:46,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:46,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-11-19 14:07:46,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:52,056 INFO L124 PetriNetUnfolderBase]: 40732/54120 cut-off events. [2024-11-19 14:07:52,056 INFO L125 PetriNetUnfolderBase]: For 160/160 co-relation queries the response was YES. [2024-11-19 14:07:52,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106510 conditions, 54120 events. 40732/54120 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 5330. Compared 387329 event pairs, 30522 based on Foata normal form. 691/25974 useless extension candidates. Maximal degree in co-relation 106414. Up to 47918 conditions per place. [2024-11-19 14:07:52,464 INFO L140 encePairwiseOnDemand]: 69/82 looper letters, 108 selfloop transitions, 5 changer transitions 0/133 dead transitions. [2024-11-19 14:07:52,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 133 transitions, 753 flow [2024-11-19 14:07:52,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:07:52,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:07:52,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 221 transitions. [2024-11-19 14:07:52,466 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5390243902439025 [2024-11-19 14:07:52,467 INFO L175 Difference]: Start difference. First operand has 84 places, 90 transitions, 360 flow. Second operand 5 states and 221 transitions. [2024-11-19 14:07:52,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 133 transitions, 753 flow [2024-11-19 14:07:52,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 133 transitions, 719 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-19 14:07:52,472 INFO L231 Difference]: Finished difference. Result has 88 places, 92 transitions, 383 flow [2024-11-19 14:07:52,475 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=383, PETRI_PLACES=88, PETRI_TRANSITIONS=92} [2024-11-19 14:07:52,476 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, 5 predicate places. [2024-11-19 14:07:52,476 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 92 transitions, 383 flow [2024-11-19 14:07:52,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2024-11-19 14:07:52,476 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:52,476 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:52,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 14:07:52,477 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-19 14:07:52,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:52,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1684195610, now seen corresponding path program 1 times [2024-11-19 14:07:52,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:52,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818808061] [2024-11-19 14:07:52,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:52,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:52,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:52,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:52,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818808061] [2024-11-19 14:07:52,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818808061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:52,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:07:52,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 14:07:52,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211578816] [2024-11-19 14:07:52,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:52,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:07:52,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:52,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:07:52,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:07:52,533 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-11-19 14:07:52,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 92 transitions, 383 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2024-11-19 14:07:52,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:52,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-11-19 14:07:52,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand