./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-lamport.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-lamport.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 a4f33aa2cc1f38311ba2397f8e50d98656063732fb966533fd95353a255f95b1 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:47:47,779 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:47:47,860 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:47:47,865 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:47:47,866 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:47:47,879 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:47:47,879 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:47:47,879 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:47:47,880 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:47:47,880 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:47:47,880 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:47:47,881 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:47:47,881 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:47:47,881 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:47:47,882 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:47:47,882 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:47:47,882 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:47:47,882 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:47:47,883 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:47:47,883 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:47:47,883 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:47:47,887 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:47:47,887 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:47:47,888 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:47:47,888 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:47:47,888 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:47:47,888 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:47:47,888 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:47:47,888 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:47:47,889 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:47:47,889 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:47:47,889 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:47:47,889 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:47:47,889 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:47:47,889 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:47:47,890 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:47:47,890 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:47:47,890 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:47:47,890 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:47:47,890 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:47:47,890 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:47:47,894 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:47:47,894 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:47:47,894 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:47:47,894 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4f33aa2cc1f38311ba2397f8e50d98656063732fb966533fd95353a255f95b1 [2024-10-13 16:47:48,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:47:48,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:47:48,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:47:48,150 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:47:48,150 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:47:48,151 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2024-10-13 16:47:49,461 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:47:49,617 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:47:49,618 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2024-10-13 16:47:49,624 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bae8d410/6ab918237a8f4c6ba8236e90034c1173/FLAGf01f06b25 [2024-10-13 16:47:49,636 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bae8d410/6ab918237a8f4c6ba8236e90034c1173 [2024-10-13 16:47:49,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:47:49,639 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:47:49,641 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:47:49,641 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:47:49,646 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:47:49,646 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:47:49" (1/1) ... [2024-10-13 16:47:49,647 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30aa0277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:49, skipping insertion in model container [2024-10-13 16:47:49,647 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:47:49" (1/1) ... [2024-10-13 16:47:49,664 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:47:49,897 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:47:49,906 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:47:49,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:47:49,958 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:47:49,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:49 WrapperNode [2024-10-13 16:47:49,959 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:47:49,959 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:47:49,960 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:47:49,960 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:47:49,965 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:49" (1/1) ... [2024-10-13 16:47:49,972 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:49" (1/1) ... [2024-10-13 16:47:49,994 INFO L138 Inliner]: procedures = 24, calls = 75, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 236 [2024-10-13 16:47:49,995 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:47:49,996 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:47:49,996 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:47:49,996 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:47:50,005 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:49" (1/1) ... [2024-10-13 16:47:50,005 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:49" (1/1) ... [2024-10-13 16:47:50,008 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:49" (1/1) ... [2024-10-13 16:47:50,021 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-13 16:47:50,021 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:49" (1/1) ... [2024-10-13 16:47:50,021 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:49" (1/1) ... [2024-10-13 16:47:50,028 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:49" (1/1) ... [2024-10-13 16:47:50,034 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:49" (1/1) ... [2024-10-13 16:47:50,035 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:49" (1/1) ... [2024-10-13 16:47:50,040 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:49" (1/1) ... [2024-10-13 16:47:50,042 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:47:50,046 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:47:50,046 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:47:50,046 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:47:50,046 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:49" (1/1) ... [2024-10-13 16:47:50,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:47:50,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:47:50,070 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) [2024-10-13 16:47:50,073 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 [2024-10-13 16:47:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:47:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 16:47:50,103 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 16:47:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 16:47:50,103 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 16:47:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 16:47:50,103 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 16:47:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:47:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 16:47:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 16:47:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 16:47:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 16:47:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 16:47:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 16:47:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:47:50,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:47:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 16:47:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 16:47:50,105 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 16:47:50,183 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:47:50,184 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:47:50,410 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:47:50,412 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:47:50,610 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:47:50,611 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-13 16:47:50,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:47:50 BoogieIcfgContainer [2024-10-13 16:47:50,612 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:47:50,614 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:47:50,614 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:47:50,617 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:47:50,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:47:49" (1/3) ... [2024-10-13 16:47:50,618 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a195b69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:47:50, skipping insertion in model container [2024-10-13 16:47:50,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:47:49" (2/3) ... [2024-10-13 16:47:50,618 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a195b69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:47:50, skipping insertion in model container [2024-10-13 16:47:50,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:47:50" (3/3) ... [2024-10-13 16:47:50,620 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-lamport.wvr.c [2024-10-13 16:47:50,632 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:47:50,633 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-10-13 16:47:50,633 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:47:50,728 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 16:47:50,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions, 127 flow [2024-10-13 16:47:50,788 INFO L124 PetriNetUnfolderBase]: 1/50 cut-off events. [2024-10-13 16:47:50,792 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 16:47:50,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 50 events. 1/50 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 89 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2024-10-13 16:47:50,794 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 53 transitions, 127 flow [2024-10-13 16:47:50,796 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 47 transitions, 106 flow [2024-10-13 16:47:50,806 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:47:50,815 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;@486974a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:47:50,815 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-10-13 16:47:50,818 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:47:50,818 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-13 16:47:50,819 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:47:50,819 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:50,820 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 16:47:50,820 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-13 16:47:50,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:50,825 INFO L85 PathProgramCache]: Analyzing trace with hash 578319, now seen corresponding path program 1 times [2024-10-13 16:47:50,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:50,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060925442] [2024-10-13 16:47:50,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:50,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:50,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:51,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:51,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:51,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060925442] [2024-10-13 16:47:51,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060925442] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:51,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:51,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:47:51,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579805832] [2024-10-13 16:47:51,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:51,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:47:51,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:51,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:47:51,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:47:51,126 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-10-13 16:47:51,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2024-10-13 16:47:51,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:51,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-10-13 16:47:51,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:51,585 INFO L124 PetriNetUnfolderBase]: 2066/3469 cut-off events. [2024-10-13 16:47:51,585 INFO L125 PetriNetUnfolderBase]: For 125/125 co-relation queries the response was YES. [2024-10-13 16:47:51,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6809 conditions, 3469 events. 2066/3469 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 23268 event pairs, 2064 based on Foata normal form. 1/2947 useless extension candidates. Maximal degree in co-relation 6493. Up to 3107 conditions per place. [2024-10-13 16:47:51,608 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 32 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2024-10-13 16:47:51,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 50 transitions, 184 flow [2024-10-13 16:47:51,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:47:51,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:47:51,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2024-10-13 16:47:51,620 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-13 16:47:51,622 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 106 flow. Second operand 4 states and 106 transitions. [2024-10-13 16:47:51,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 50 transitions, 184 flow [2024-10-13 16:47:51,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 50 transitions, 178 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 16:47:51,633 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 129 flow [2024-10-13 16:47:51,635 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=129, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-10-13 16:47:51,640 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 1 predicate places. [2024-10-13 16:47:51,640 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 129 flow [2024-10-13 16:47:51,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2024-10-13 16:47:51,640 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:51,641 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-13 16:47:51,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:47:51,641 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-13 16:47:51,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:51,642 INFO L85 PathProgramCache]: Analyzing trace with hash 49402776, now seen corresponding path program 1 times [2024-10-13 16:47:51,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:51,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898974270] [2024-10-13 16:47:51,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:51,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:51,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:51,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:51,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:51,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898974270] [2024-10-13 16:47:51,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898974270] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:47:51,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110788112] [2024-10-13 16:47:51,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:51,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:47:51,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:47:51,754 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) [2024-10-13 16:47:51,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 16:47:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:51,831 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:47:51,833 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:47:51,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:51,876 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:47:51,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110788112] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:51,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:47:51,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-13 16:47:51,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253220068] [2024-10-13 16:47:51,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:51,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:47:51,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:51,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:47:51,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:47:51,891 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-10-13 16:47:51,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 129 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 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) [2024-10-13 16:47:51,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:51,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-10-13 16:47:51,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:52,203 INFO L124 PetriNetUnfolderBase]: 2066/3468 cut-off events. [2024-10-13 16:47:52,203 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-10-13 16:47:52,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6772 conditions, 3468 events. 2066/3468 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 23248 event pairs, 2064 based on Foata normal form. 1/2947 useless extension candidates. Maximal degree in co-relation 6745. Up to 3102 conditions per place. [2024-10-13 16:47:52,220 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 28 selfloop transitions, 7 changer transitions 0/49 dead transitions. [2024-10-13 16:47:52,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 49 transitions, 195 flow [2024-10-13 16:47:52,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:47:52,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:47:52,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-10-13 16:47:52,224 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4339622641509434 [2024-10-13 16:47:52,224 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 129 flow. Second operand 6 states and 138 transitions. [2024-10-13 16:47:52,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 49 transitions, 195 flow [2024-10-13 16:47:52,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 49 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:47:52,226 INFO L231 Difference]: Finished difference. Result has 60 places, 49 transitions, 136 flow [2024-10-13 16:47:52,228 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=136, PETRI_PLACES=60, PETRI_TRANSITIONS=49} [2024-10-13 16:47:52,229 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 4 predicate places. [2024-10-13 16:47:52,229 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 136 flow [2024-10-13 16:47:52,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 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) [2024-10-13 16:47:52,229 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:52,229 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-13 16:47:52,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-13 16:47:52,433 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 [2024-10-13 16:47:52,436 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-13 16:47:52,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:52,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1531486631, now seen corresponding path program 1 times [2024-10-13 16:47:52,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:52,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127532177] [2024-10-13 16:47:52,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:52,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:52,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:52,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:52,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127532177] [2024-10-13 16:47:52,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127532177] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:47:52,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388533639] [2024-10-13 16:47:52,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:52,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:47:52,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:47:52,532 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) [2024-10-13 16:47:52,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 16:47:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:52,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:47:52,600 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:47:52,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:52,624 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:47:52,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:52,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388533639] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:47:52,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:47:52,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-13 16:47:52,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633636683] [2024-10-13 16:47:52,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:47:52,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 16:47:52,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:52,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 16:47:52,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-13 16:47:52,680 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-10-13 16:47:52,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 49 transitions, 136 flow. Second operand has 12 states, 12 states have (on average 18.083333333333332) internal successors, (217), 12 states have internal predecessors, (217), 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) [2024-10-13 16:47:52,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:52,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-10-13 16:47:52,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:52,974 INFO L124 PetriNetUnfolderBase]: 2069/3480 cut-off events. [2024-10-13 16:47:52,975 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-10-13 16:47:52,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6816 conditions, 3480 events. 2069/3480 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 23379 event pairs, 2064 based on Foata normal form. 3/2959 useless extension candidates. Maximal degree in co-relation 6746. Up to 3109 conditions per place. [2024-10-13 16:47:52,990 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 31 selfloop transitions, 13 changer transitions 0/58 dead transitions. [2024-10-13 16:47:52,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 58 transitions, 278 flow [2024-10-13 16:47:52,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:47:52,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:47:52,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 217 transitions. [2024-10-13 16:47:52,993 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40943396226415096 [2024-10-13 16:47:52,993 INFO L175 Difference]: Start difference. First operand has 60 places, 49 transitions, 136 flow. Second operand 10 states and 217 transitions. [2024-10-13 16:47:52,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 58 transitions, 278 flow [2024-10-13 16:47:52,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 58 transitions, 232 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-10-13 16:47:52,995 INFO L231 Difference]: Finished difference. Result has 67 places, 58 transitions, 188 flow [2024-10-13 16:47:52,995 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=188, PETRI_PLACES=67, PETRI_TRANSITIONS=58} [2024-10-13 16:47:52,998 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 11 predicate places. [2024-10-13 16:47:52,998 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 58 transitions, 188 flow [2024-10-13 16:47:52,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.083333333333332) internal successors, (217), 12 states have internal predecessors, (217), 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) [2024-10-13 16:47:52,999 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:52,999 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:53,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 16:47:53,202 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 [2024-10-13 16:47:53,203 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-13 16:47:53,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:53,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1628591162, now seen corresponding path program 1 times [2024-10-13 16:47:53,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:53,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336731274] [2024-10-13 16:47:53,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:53,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:53,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:53,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:53,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:53,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336731274] [2024-10-13 16:47:53,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336731274] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:53,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:53,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:47:53,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113113993] [2024-10-13 16:47:53,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:53,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:47:53,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:53,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:47:53,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:47:53,279 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-10-13 16:47:53,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-10-13 16:47:53,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:53,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-10-13 16:47:53,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:53,731 INFO L124 PetriNetUnfolderBase]: 3616/6036 cut-off events. [2024-10-13 16:47:53,731 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-10-13 16:47:53,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11823 conditions, 6036 events. 3616/6036 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 39785 event pairs, 794 based on Foata normal form. 0/5612 useless extension candidates. Maximal degree in co-relation 11789. Up to 1848 conditions per place. [2024-10-13 16:47:53,750 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 62 selfloop transitions, 4 changer transitions 35/114 dead transitions. [2024-10-13 16:47:53,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 114 transitions, 513 flow [2024-10-13 16:47:53,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:47:53,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:47:53,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 178 transitions. [2024-10-13 16:47:53,754 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6716981132075471 [2024-10-13 16:47:53,755 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 188 flow. Second operand 5 states and 178 transitions. [2024-10-13 16:47:53,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 114 transitions, 513 flow [2024-10-13 16:47:53,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 114 transitions, 502 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-13 16:47:53,759 INFO L231 Difference]: Finished difference. Result has 72 places, 59 transitions, 202 flow [2024-10-13 16:47:53,759 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=202, PETRI_PLACES=72, PETRI_TRANSITIONS=59} [2024-10-13 16:47:53,760 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 16 predicate places. [2024-10-13 16:47:53,761 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 59 transitions, 202 flow [2024-10-13 16:47:53,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-10-13 16:47:53,761 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:53,761 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:53,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 16:47:53,761 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-13 16:47:53,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:53,762 INFO L85 PathProgramCache]: Analyzing trace with hash 511515787, now seen corresponding path program 1 times [2024-10-13 16:47:53,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:53,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886864121] [2024-10-13 16:47:53,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:53,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:53,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:53,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:53,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886864121] [2024-10-13 16:47:53,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886864121] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:53,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:53,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:47:53,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698017990] [2024-10-13 16:47:53,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:53,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:47:53,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:53,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:47:53,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:47:53,831 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-10-13 16:47:53,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 59 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-10-13 16:47:53,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:53,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-10-13 16:47:53,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:54,211 INFO L124 PetriNetUnfolderBase]: 2625/4455 cut-off events. [2024-10-13 16:47:54,211 INFO L125 PetriNetUnfolderBase]: For 339/362 co-relation queries the response was YES. [2024-10-13 16:47:54,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9207 conditions, 4455 events. 2625/4455 cut-off events. For 339/362 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 27794 event pairs, 582 based on Foata normal form. 124/4356 useless extension candidates. Maximal degree in co-relation 9170. Up to 1575 conditions per place. [2024-10-13 16:47:54,228 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 60 selfloop transitions, 4 changer transitions 20/98 dead transitions. [2024-10-13 16:47:54,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 98 transitions, 457 flow [2024-10-13 16:47:54,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:47:54,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:47:54,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-10-13 16:47:54,230 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6075471698113207 [2024-10-13 16:47:54,230 INFO L175 Difference]: Start difference. First operand has 72 places, 59 transitions, 202 flow. Second operand 5 states and 161 transitions. [2024-10-13 16:47:54,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 98 transitions, 457 flow [2024-10-13 16:47:54,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 98 transitions, 450 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-13 16:47:54,234 INFO L231 Difference]: Finished difference. Result has 76 places, 60 transitions, 220 flow [2024-10-13 16:47:54,234 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=220, PETRI_PLACES=76, PETRI_TRANSITIONS=60} [2024-10-13 16:47:54,235 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 20 predicate places. [2024-10-13 16:47:54,235 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 60 transitions, 220 flow [2024-10-13 16:47:54,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-10-13 16:47:54,235 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:54,235 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:54,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 16:47:54,235 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-13 16:47:54,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:54,236 INFO L85 PathProgramCache]: Analyzing trace with hash 253219663, now seen corresponding path program 1 times [2024-10-13 16:47:54,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:54,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597906955] [2024-10-13 16:47:54,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:54,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:54,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:54,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:54,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597906955] [2024-10-13 16:47:54,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597906955] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:54,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:54,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:47:54,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346406626] [2024-10-13 16:47:54,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:54,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:47:54,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:54,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:47:54,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:47:54,280 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2024-10-13 16:47:54,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 60 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-10-13 16:47:54,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:54,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2024-10-13 16:47:54,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:54,408 INFO L124 PetriNetUnfolderBase]: 856/1555 cut-off events. [2024-10-13 16:47:54,408 INFO L125 PetriNetUnfolderBase]: For 443/462 co-relation queries the response was YES. [2024-10-13 16:47:54,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3704 conditions, 1555 events. 856/1555 cut-off events. For 443/462 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 9899 event pairs, 852 based on Foata normal form. 20/1365 useless extension candidates. Maximal degree in co-relation 3670. Up to 1368 conditions per place. [2024-10-13 16:47:54,415 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 40 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2024-10-13 16:47:54,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 59 transitions, 301 flow [2024-10-13 16:47:54,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:47:54,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:47:54,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-10-13 16:47:54,416 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5723270440251572 [2024-10-13 16:47:54,416 INFO L175 Difference]: Start difference. First operand has 76 places, 60 transitions, 220 flow. Second operand 3 states and 91 transitions. [2024-10-13 16:47:54,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 59 transitions, 301 flow [2024-10-13 16:47:54,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 59 transitions, 294 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-13 16:47:54,419 INFO L231 Difference]: Finished difference. Result has 75 places, 59 transitions, 214 flow [2024-10-13 16:47:54,419 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=75, PETRI_TRANSITIONS=59} [2024-10-13 16:47:54,420 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 19 predicate places. [2024-10-13 16:47:54,420 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 59 transitions, 214 flow [2024-10-13 16:47:54,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-10-13 16:47:54,420 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:54,420 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-13 16:47:54,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 16:47:54,421 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-13 16:47:54,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:54,421 INFO L85 PathProgramCache]: Analyzing trace with hash -675225008, now seen corresponding path program 2 times [2024-10-13 16:47:54,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:54,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116848764] [2024-10-13 16:47:54,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:54,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:54,535 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:47:54,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:54,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116848764] [2024-10-13 16:47:54,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116848764] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:47:54,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545996476] [2024-10-13 16:47:54,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:47:54,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:47:54,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:47:54,537 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:47:54,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 16:47:54,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 16:47:54,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:47:54,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 16:47:54,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:47:54,643 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-13 16:47:54,644 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:47:54,670 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-13 16:47:54,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545996476] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:47:54,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:47:54,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-13 16:47:54,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569285408] [2024-10-13 16:47:54,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:47:54,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 16:47:54,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:54,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 16:47:54,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-13 16:47:54,685 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-10-13 16:47:54,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 59 transitions, 214 flow. Second operand has 14 states, 14 states have (on average 18.142857142857142) internal successors, (254), 14 states have internal predecessors, (254), 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) [2024-10-13 16:47:54,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:54,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-10-13 16:47:54,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:54,958 INFO L124 PetriNetUnfolderBase]: 857/1558 cut-off events. [2024-10-13 16:47:54,958 INFO L125 PetriNetUnfolderBase]: For 245/264 co-relation queries the response was YES. [2024-10-13 16:47:54,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3544 conditions, 1558 events. 857/1558 cut-off events. For 245/264 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 9904 event pairs, 852 based on Foata normal form. 21/1368 useless extension candidates. Maximal degree in co-relation 3518. Up to 1360 conditions per place. [2024-10-13 16:47:54,967 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 27 selfloop transitions, 18 changer transitions 0/61 dead transitions. [2024-10-13 16:47:54,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 61 transitions, 310 flow [2024-10-13 16:47:54,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 16:47:54,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 16:47:54,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 285 transitions. [2024-10-13 16:47:54,969 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38409703504043125 [2024-10-13 16:47:54,969 INFO L175 Difference]: Start difference. First operand has 75 places, 59 transitions, 214 flow. Second operand 14 states and 285 transitions. [2024-10-13 16:47:54,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 61 transitions, 310 flow [2024-10-13 16:47:54,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 61 transitions, 294 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-10-13 16:47:54,976 INFO L231 Difference]: Finished difference. Result has 81 places, 61 transitions, 240 flow [2024-10-13 16:47:54,976 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=240, PETRI_PLACES=81, PETRI_TRANSITIONS=61} [2024-10-13 16:47:54,977 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 25 predicate places. [2024-10-13 16:47:54,977 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 61 transitions, 240 flow [2024-10-13 16:47:54,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.142857142857142) internal successors, (254), 14 states have internal predecessors, (254), 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) [2024-10-13 16:47:54,977 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:54,977 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:54,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-13 16:47:55,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:47:55,181 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-13 16:47:55,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:55,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1421386648, now seen corresponding path program 1 times [2024-10-13 16:47:55,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:55,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675053338] [2024-10-13 16:47:55,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:55,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:55,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:47:55,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:55,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675053338] [2024-10-13 16:47:55,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675053338] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:55,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:55,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 16:47:55,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237383197] [2024-10-13 16:47:55,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:55,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:47:55,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:55,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:47:55,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 16:47:55,232 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-10-13 16:47:55,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 61 transitions, 240 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2024-10-13 16:47:55,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:55,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-10-13 16:47:55,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:55,437 INFO L124 PetriNetUnfolderBase]: 1239/2050 cut-off events. [2024-10-13 16:47:55,437 INFO L125 PetriNetUnfolderBase]: For 514/514 co-relation queries the response was YES. [2024-10-13 16:47:55,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4902 conditions, 2050 events. 1239/2050 cut-off events. For 514/514 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 10974 event pairs, 300 based on Foata normal form. 0/1932 useless extension candidates. Maximal degree in co-relation 4810. Up to 685 conditions per place. [2024-10-13 16:47:55,444 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 89 selfloop transitions, 7 changer transitions 5/111 dead transitions. [2024-10-13 16:47:55,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 111 transitions, 567 flow [2024-10-13 16:47:55,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:47:55,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:47:55,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 194 transitions. [2024-10-13 16:47:55,445 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.522911051212938 [2024-10-13 16:47:55,445 INFO L175 Difference]: Start difference. First operand has 81 places, 61 transitions, 240 flow. Second operand 7 states and 194 transitions. [2024-10-13 16:47:55,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 111 transitions, 567 flow [2024-10-13 16:47:55,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 111 transitions, 499 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-10-13 16:47:55,447 INFO L231 Difference]: Finished difference. Result has 74 places, 60 transitions, 182 flow [2024-10-13 16:47:55,448 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=182, PETRI_PLACES=74, PETRI_TRANSITIONS=60} [2024-10-13 16:47:55,448 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 18 predicate places. [2024-10-13 16:47:55,448 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 60 transitions, 182 flow [2024-10-13 16:47:55,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2024-10-13 16:47:55,448 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:55,448 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:55,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 16:47:55,449 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-13 16:47:55,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:55,449 INFO L85 PathProgramCache]: Analyzing trace with hash 785018905, now seen corresponding path program 1 times [2024-10-13 16:47:55,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:55,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615816069] [2024-10-13 16:47:55,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:55,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:55,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:55,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:47:55,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:55,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615816069] [2024-10-13 16:47:55,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615816069] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:55,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:55,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 16:47:55,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228811189] [2024-10-13 16:47:55,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:55,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:47:55,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:55,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:47:55,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 16:47:55,520 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-10-13 16:47:55,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 60 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2024-10-13 16:47:55,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:55,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-10-13 16:47:55,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:55,710 INFO L124 PetriNetUnfolderBase]: 964/1623 cut-off events. [2024-10-13 16:47:55,710 INFO L125 PetriNetUnfolderBase]: For 659/659 co-relation queries the response was YES. [2024-10-13 16:47:55,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4012 conditions, 1623 events. 964/1623 cut-off events. For 659/659 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8224 event pairs, 148 based on Foata normal form. 89/1595 useless extension candidates. Maximal degree in co-relation 3871. Up to 684 conditions per place. [2024-10-13 16:47:55,717 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 51 selfloop transitions, 4 changer transitions 35/98 dead transitions. [2024-10-13 16:47:55,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 98 transitions, 456 flow [2024-10-13 16:47:55,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:47:55,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:47:55,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-10-13 16:47:55,719 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48247978436657685 [2024-10-13 16:47:55,719 INFO L175 Difference]: Start difference. First operand has 74 places, 60 transitions, 182 flow. Second operand 7 states and 179 transitions. [2024-10-13 16:47:55,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 98 transitions, 456 flow [2024-10-13 16:47:55,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 98 transitions, 439 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-13 16:47:55,722 INFO L231 Difference]: Finished difference. Result has 75 places, 47 transitions, 134 flow [2024-10-13 16:47:55,722 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=134, PETRI_PLACES=75, PETRI_TRANSITIONS=47} [2024-10-13 16:47:55,722 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 19 predicate places. [2024-10-13 16:47:55,723 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 47 transitions, 134 flow [2024-10-13 16:47:55,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2024-10-13 16:47:55,723 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:55,723 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:55,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 16:47:55,723 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-13 16:47:55,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:55,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1137866904, now seen corresponding path program 1 times [2024-10-13 16:47:55,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:55,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981259076] [2024-10-13 16:47:55,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:55,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:55,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:47:55,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:55,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981259076] [2024-10-13 16:47:55,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981259076] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:55,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:55,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 16:47:55,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25830569] [2024-10-13 16:47:55,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:55,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:47:55,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:55,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:47:55,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 16:47:55,791 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-10-13 16:47:55,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 47 transitions, 134 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2024-10-13 16:47:55,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:55,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-10-13 16:47:55,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:55,915 INFO L124 PetriNetUnfolderBase]: 459/785 cut-off events. [2024-10-13 16:47:55,916 INFO L125 PetriNetUnfolderBase]: For 174/174 co-relation queries the response was YES. [2024-10-13 16:47:55,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1862 conditions, 785 events. 459/785 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3275 event pairs, 4 based on Foata normal form. 0/777 useless extension candidates. Maximal degree in co-relation 1797. Up to 366 conditions per place. [2024-10-13 16:47:55,919 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 66 selfloop transitions, 5 changer transitions 2/81 dead transitions. [2024-10-13 16:47:55,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 81 transitions, 360 flow [2024-10-13 16:47:55,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:47:55,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:47:55,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-10-13 16:47:55,921 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4474393530997305 [2024-10-13 16:47:55,921 INFO L175 Difference]: Start difference. First operand has 75 places, 47 transitions, 134 flow. Second operand 7 states and 166 transitions. [2024-10-13 16:47:55,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 81 transitions, 360 flow [2024-10-13 16:47:55,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 81 transitions, 340 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-10-13 16:47:55,923 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 125 flow [2024-10-13 16:47:55,924 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=125, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2024-10-13 16:47:55,924 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2024-10-13 16:47:55,925 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 125 flow [2024-10-13 16:47:55,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2024-10-13 16:47:55,925 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:47:55,925 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:55,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 16:47:55,926 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-13 16:47:55,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:47:55,926 INFO L85 PathProgramCache]: Analyzing trace with hash 225358873, now seen corresponding path program 1 times [2024-10-13 16:47:55,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:47:55,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408835278] [2024-10-13 16:47:55,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:47:55,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:47:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:47:55,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:47:55,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:47:55,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408835278] [2024-10-13 16:47:55,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408835278] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:47:55,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:47:55,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 16:47:55,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428129313] [2024-10-13 16:47:55,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:47:55,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:47:55,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:47:55,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:47:55,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 16:47:55,980 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-10-13 16:47:55,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 125 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2024-10-13 16:47:55,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:47:55,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-10-13 16:47:55,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:47:56,071 INFO L124 PetriNetUnfolderBase]: 252/470 cut-off events. [2024-10-13 16:47:56,071 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES. [2024-10-13 16:47:56,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1127 conditions, 470 events. 252/470 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1788 event pairs, 4 based on Foata normal form. 84/546 useless extension candidates. Maximal degree in co-relation 1065. Up to 237 conditions per place. [2024-10-13 16:47:56,073 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 0 selfloop transitions, 0 changer transitions 63/63 dead transitions. [2024-10-13 16:47:56,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 63 transitions, 273 flow [2024-10-13 16:47:56,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:47:56,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:47:56,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-10-13 16:47:56,074 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44150943396226416 [2024-10-13 16:47:56,074 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 125 flow. Second operand 5 states and 117 transitions. [2024-10-13 16:47:56,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 63 transitions, 273 flow [2024-10-13 16:47:56,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 63 transitions, 263 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-13 16:47:56,075 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2024-10-13 16:47:56,076 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2024-10-13 16:47:56,076 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-10-13 16:47:56,076 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2024-10-13 16:47:56,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2024-10-13 16:47:56,079 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2024-10-13 16:47:56,080 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-10-13 16:47:56,080 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-10-13 16:47:56,080 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-10-13 16:47:56,080 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-10-13 16:47:56,080 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-10-13 16:47:56,080 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 13 remaining) [2024-10-13 16:47:56,080 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 13 remaining) [2024-10-13 16:47:56,081 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 13 remaining) [2024-10-13 16:47:56,081 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-10-13 16:47:56,081 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-10-13 16:47:56,081 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-10-13 16:47:56,081 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-10-13 16:47:56,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 16:47:56,082 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:47:56,086 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-13 16:47:56,087 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-13 16:47:56,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 04:47:56 BasicIcfg [2024-10-13 16:47:56,091 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-13 16:47:56,091 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 16:47:56,091 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 16:47:56,091 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 16:47:56,092 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:47:50" (3/4) ... [2024-10-13 16:47:56,093 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-13 16:47:56,095 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-10-13 16:47:56,095 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-10-13 16:47:56,095 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-10-13 16:47:56,099 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 126 nodes and edges [2024-10-13 16:47:56,099 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2024-10-13 16:47:56,099 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-10-13 16:47:56,099 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-13 16:47:56,161 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-13 16:47:56,162 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-13 16:47:56,162 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 16:47:56,162 INFO L158 Benchmark]: Toolchain (without parser) took 6523.11ms. Allocated memory was 192.9MB in the beginning and 459.3MB in the end (delta: 266.3MB). Free memory was 128.2MB in the beginning and 272.7MB in the end (delta: -144.5MB). Peak memory consumption was 120.7MB. Max. memory is 16.1GB. [2024-10-13 16:47:56,162 INFO L158 Benchmark]: CDTParser took 1.51ms. Allocated memory is still 96.5MB. Free memory was 51.1MB in the beginning and 51.1MB in the end (delta: 70.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 16:47:56,163 INFO L158 Benchmark]: CACSL2BoogieTranslator took 317.56ms. Allocated memory is still 192.9MB. Free memory was 127.7MB in the beginning and 159.3MB in the end (delta: -31.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-13 16:47:56,163 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.24ms. Allocated memory is still 192.9MB. Free memory was 159.3MB in the beginning and 157.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 16:47:56,163 INFO L158 Benchmark]: Boogie Preprocessor took 48.88ms. Allocated memory is still 192.9MB. Free memory was 157.2MB in the beginning and 154.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 16:47:56,163 INFO L158 Benchmark]: RCFGBuilder took 566.17ms. Allocated memory is still 192.9MB. Free memory was 154.3MB in the beginning and 95.0MB in the end (delta: 59.3MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-10-13 16:47:56,163 INFO L158 Benchmark]: TraceAbstraction took 5476.45ms. Allocated memory was 192.9MB in the beginning and 459.3MB in the end (delta: 266.3MB). Free memory was 94.3MB in the beginning and 277.9MB in the end (delta: -183.7MB). Peak memory consumption was 84.5MB. Max. memory is 16.1GB. [2024-10-13 16:47:56,164 INFO L158 Benchmark]: Witness Printer took 70.88ms. Allocated memory is still 459.3MB. Free memory was 277.9MB in the beginning and 272.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-13 16:47:56,165 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.51ms. Allocated memory is still 96.5MB. Free memory was 51.1MB in the beginning and 51.1MB in the end (delta: 70.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 317.56ms. Allocated memory is still 192.9MB. Free memory was 127.7MB in the beginning and 159.3MB in the end (delta: -31.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.24ms. Allocated memory is still 192.9MB. Free memory was 159.3MB in the beginning and 157.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.88ms. Allocated memory is still 192.9MB. Free memory was 157.2MB in the beginning and 154.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 566.17ms. Allocated memory is still 192.9MB. Free memory was 154.3MB in the beginning and 95.0MB in the end (delta: 59.3MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5476.45ms. Allocated memory was 192.9MB in the beginning and 459.3MB in the end (delta: 266.3MB). Free memory was 94.3MB in the beginning and 277.9MB in the end (delta: -183.7MB). Peak memory consumption was 84.5MB. Max. memory is 16.1GB. * Witness Printer took 70.88ms. Allocated memory is still 459.3MB. Free memory was 277.9MB in the beginning and 272.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 171]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 171]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 92 locations, 13 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.3s, OverallIterations: 11, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 530 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 506 mSDsluCounter, 92 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 63 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1584 IncrementalHoareTripleChecker+Invalid, 1619 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 29 mSDtfsCounter, 1584 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 133 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=240occurred in iteration=7, InterpolantAutomatonStates: 73, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 154 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 161 ConstructedInterpolants, 0 QuantifiedInterpolants, 429 SizeOfPredicates, 9 NumberOfNonLiveVariables, 247 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 16 InterpolantComputations, 9 PerfectInterpolantSequences, 50/107 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-13 16:47:56,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE