./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/popl20-more-array-sum-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 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/popl20-more-array-sum-alt.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 91d7b70e505e7aef19ce206c76dac3b8838d1608e22286f0e4e4335d9f63c057 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-15 00:03:09,082 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 00:03:09,135 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-15 00:03:09,138 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 00:03:09,138 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 00:03:09,155 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 00:03:09,155 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 00:03:09,155 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 00:03:09,156 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 00:03:09,156 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 00:03:09,156 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 00:03:09,157 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 00:03:09,157 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 00:03:09,157 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 00:03:09,157 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 00:03:09,158 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 00:03:09,158 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 00:03:09,160 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 00:03:09,160 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 00:03:09,160 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 00:03:09,161 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 00:03:09,164 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 00:03:09,164 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 00:03:09,164 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 00:03:09,164 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 00:03:09,164 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-15 00:03:09,165 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-15 00:03:09,165 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 00:03:09,165 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 00:03:09,165 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 00:03:09,165 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 00:03:09,165 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 00:03:09,166 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 00:03:09,166 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 00:03:09,166 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:03:09,166 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 00:03:09,166 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 00:03:09,166 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 00:03:09,167 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 00:03:09,167 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 00:03:09,167 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 00:03:09,167 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 00:03:09,168 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 00:03:09,168 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 00:03:09,168 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91d7b70e505e7aef19ce206c76dac3b8838d1608e22286f0e4e4335d9f63c057 [2024-10-15 00:03:09,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 00:03:09,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 00:03:09,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 00:03:09,437 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 00:03:09,437 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 00:03:09,439 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c [2024-10-15 00:03:10,918 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 00:03:11,101 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 00:03:11,102 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c [2024-10-15 00:03:11,110 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8b0defff/cb956bc048c64d42b42e66f4c5a94fd3/FLAGf09b09160 [2024-10-15 00:03:11,485 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8b0defff/cb956bc048c64d42b42e66f4c5a94fd3 [2024-10-15 00:03:11,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 00:03:11,490 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 00:03:11,493 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 00:03:11,494 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 00:03:11,501 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 00:03:11,502 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,503 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5811af97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11, skipping insertion in model container [2024-10-15 00:03:11,506 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,531 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 00:03:11,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:03:11,737 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 00:03:11,754 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:03:11,790 INFO L204 MainTranslator]: Completed translation [2024-10-15 00:03:11,790 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11 WrapperNode [2024-10-15 00:03:11,791 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 00:03:11,792 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 00:03:11,792 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 00:03:11,792 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 00:03:11,799 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,808 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,835 INFO L138 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 246 [2024-10-15 00:03:11,836 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 00:03:11,837 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 00:03:11,837 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 00:03:11,837 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 00:03:11,851 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,852 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,855 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,873 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 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]. [2024-10-15 00:03:11,874 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,874 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,881 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,887 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,889 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,890 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,892 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 00:03:11,893 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 00:03:11,893 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 00:03:11,893 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 00:03:11,898 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (1/1) ... [2024-10-15 00:03:11,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:03:11,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:11,935 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) [2024-10-15 00:03:11,942 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 [2024-10-15 00:03:11,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 00:03:11,998 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-15 00:03:11,998 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-15 00:03:11,998 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-15 00:03:11,998 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-15 00:03:11,998 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-15 00:03:11,998 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-15 00:03:11,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 00:03:11,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-15 00:03:12,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-15 00:03:12,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-15 00:03:12,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-15 00:03:12,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-15 00:03:12,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-15 00:03:12,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 00:03:12,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 00:03:12,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-15 00:03:12,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-15 00:03:12,005 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-15 00:03:12,153 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 00:03:12,156 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 00:03:12,520 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-15 00:03:12,521 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 00:03:12,844 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 00:03:12,844 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-15 00:03:12,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:03:12 BoogieIcfgContainer [2024-10-15 00:03:12,845 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 00:03:12,851 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 00:03:12,851 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 00:03:12,855 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 00:03:12,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:03:11" (1/3) ... [2024-10-15 00:03:12,856 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1556420f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:03:12, skipping insertion in model container [2024-10-15 00:03:12,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:11" (2/3) ... [2024-10-15 00:03:12,857 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1556420f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:03:12, skipping insertion in model container [2024-10-15 00:03:12,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:03:12" (3/3) ... [2024-10-15 00:03:12,860 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt.wvr.c [2024-10-15 00:03:12,879 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 00:03:12,879 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2024-10-15 00:03:12,879 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-15 00:03:13,001 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-15 00:03:13,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 68 transitions, 157 flow [2024-10-15 00:03:13,076 INFO L124 PetriNetUnfolderBase]: 4/65 cut-off events. [2024-10-15 00:03:13,076 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-15 00:03:13,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 65 events. 4/65 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 233 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2024-10-15 00:03:13,084 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 68 transitions, 157 flow [2024-10-15 00:03:13,089 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 63 transitions, 141 flow [2024-10-15 00:03:13,102 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 00:03:13,112 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;@2bbfc4e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 00:03:13,113 INFO L334 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2024-10-15 00:03:13,119 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-15 00:03:13,119 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-15 00:03:13,120 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-15 00:03:13,120 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:13,121 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-15 00:03:13,121 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-15 00:03:13,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:13,127 INFO L85 PathProgramCache]: Analyzing trace with hash 795321, now seen corresponding path program 1 times [2024-10-15 00:03:13,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:13,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745198512] [2024-10-15 00:03:13,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:13,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:13,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:13,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:13,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:13,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745198512] [2024-10-15 00:03:13,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745198512] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:13,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:03:13,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:03:13,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214550101] [2024-10-15 00:03:13,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:13,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:03:13,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:13,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:03:13,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:03:13,492 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 68 [2024-10-15 00:03:13,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-10-15 00:03:13,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:13,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 68 [2024-10-15 00:03:13,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:14,796 INFO L124 PetriNetUnfolderBase]: 4161/6808 cut-off events. [2024-10-15 00:03:14,796 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-10-15 00:03:14,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12981 conditions, 6808 events. 4161/6808 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 49155 event pairs, 3616 based on Foata normal form. 1/4404 useless extension candidates. Maximal degree in co-relation 12340. Up to 5895 conditions per place. [2024-10-15 00:03:14,861 INFO L140 encePairwiseOnDemand]: 56/68 looper letters, 40 selfloop transitions, 4 changer transitions 0/60 dead transitions. [2024-10-15 00:03:14,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 60 transitions, 223 flow [2024-10-15 00:03:14,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:03:14,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:03:14,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2024-10-15 00:03:14,876 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47058823529411764 [2024-10-15 00:03:14,878 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 141 flow. Second operand 4 states and 128 transitions. [2024-10-15 00:03:14,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 60 transitions, 223 flow [2024-10-15 00:03:14,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 60 transitions, 214 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-15 00:03:14,897 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 149 flow [2024-10-15 00:03:14,899 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=149, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2024-10-15 00:03:14,905 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, -6 predicate places. [2024-10-15 00:03:14,908 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 149 flow [2024-10-15 00:03:14,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-10-15 00:03:14,908 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:14,909 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-15 00:03:14,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 00:03:14,909 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-15 00:03:14,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:14,911 INFO L85 PathProgramCache]: Analyzing trace with hash -2075615920, now seen corresponding path program 1 times [2024-10-15 00:03:14,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:14,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265308467] [2024-10-15 00:03:14,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:14,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:15,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:15,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:15,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265308467] [2024-10-15 00:03:15,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265308467] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:15,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475323252] [2024-10-15 00:03:15,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:15,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:15,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:15,053 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) [2024-10-15 00:03:15,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 00:03:15,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:15,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:03:15,171 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:15,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:15,221 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:03:15,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475323252] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:15,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:03:15,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-15 00:03:15,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141126902] [2024-10-15 00:03:15,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:15,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-15 00:03:15,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:15,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-15 00:03:15,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-15 00:03:15,234 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 68 [2024-10-15 00:03:15,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 149 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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) [2024-10-15 00:03:15,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:15,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 68 [2024-10-15 00:03:15,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:16,137 INFO L124 PetriNetUnfolderBase]: 4161/6807 cut-off events. [2024-10-15 00:03:16,138 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2024-10-15 00:03:16,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12890 conditions, 6807 events. 4161/6807 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 49222 event pairs, 3616 based on Foata normal form. 1/4404 useless extension candidates. Maximal degree in co-relation 12863. Up to 5890 conditions per place. [2024-10-15 00:03:16,193 INFO L140 encePairwiseOnDemand]: 63/68 looper letters, 36 selfloop transitions, 7 changer transitions 0/59 dead transitions. [2024-10-15 00:03:16,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 59 transitions, 231 flow [2024-10-15 00:03:16,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-15 00:03:16,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-15 00:03:16,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2024-10-15 00:03:16,196 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3872549019607843 [2024-10-15 00:03:16,196 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 149 flow. Second operand 6 states and 158 transitions. [2024-10-15 00:03:16,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 59 transitions, 231 flow [2024-10-15 00:03:16,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 59 transitions, 228 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:03:16,198 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 156 flow [2024-10-15 00:03:16,199 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=156, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2024-10-15 00:03:16,199 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, -3 predicate places. [2024-10-15 00:03:16,200 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 156 flow [2024-10-15 00:03:16,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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) [2024-10-15 00:03:16,200 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:16,200 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-15 00:03:16,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-15 00:03:16,401 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 [2024-10-15 00:03:16,402 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-15 00:03:16,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:16,403 INFO L85 PathProgramCache]: Analyzing trace with hash -2072705742, now seen corresponding path program 1 times [2024-10-15 00:03:16,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:16,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636042836] [2024-10-15 00:03:16,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:16,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:16,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:16,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:16,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:16,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636042836] [2024-10-15 00:03:16,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636042836] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:16,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:03:16,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-15 00:03:16,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805462508] [2024-10-15 00:03:16,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:16,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:03:16,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:16,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:03:16,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:03:16,498 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2024-10-15 00:03:16,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-10-15 00:03:16,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:16,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2024-10-15 00:03:16,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:17,568 INFO L124 PetriNetUnfolderBase]: 6990/11238 cut-off events. [2024-10-15 00:03:17,569 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-10-15 00:03:17,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21450 conditions, 11238 events. 6990/11238 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 84248 event pairs, 2401 based on Foata normal form. 0/7374 useless extension candidates. Maximal degree in co-relation 21420. Up to 6069 conditions per place. [2024-10-15 00:03:17,616 INFO L140 encePairwiseOnDemand]: 64/68 looper letters, 71 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2024-10-15 00:03:17,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 89 transitions, 367 flow [2024-10-15 00:03:17,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:03:17,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:03:17,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 132 transitions. [2024-10-15 00:03:17,618 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2024-10-15 00:03:17,618 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 156 flow. Second operand 3 states and 132 transitions. [2024-10-15 00:03:17,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 89 transitions, 367 flow [2024-10-15 00:03:17,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 89 transitions, 345 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-10-15 00:03:17,620 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 148 flow [2024-10-15 00:03:17,621 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2024-10-15 00:03:17,621 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, -5 predicate places. [2024-10-15 00:03:17,621 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 148 flow [2024-10-15 00:03:17,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-10-15 00:03:17,622 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:17,622 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-15 00:03:17,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-15 00:03:17,622 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-15 00:03:17,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:17,623 INFO L85 PathProgramCache]: Analyzing trace with hash -2072705745, now seen corresponding path program 1 times [2024-10-15 00:03:17,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:17,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184597875] [2024-10-15 00:03:17,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:17,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:17,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:17,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:17,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184597875] [2024-10-15 00:03:17,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184597875] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:17,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:03:17,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-15 00:03:17,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486337922] [2024-10-15 00:03:17,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:17,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 00:03:17,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:17,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 00:03:17,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-15 00:03:17,717 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2024-10-15 00:03:17,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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) [2024-10-15 00:03:17,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:17,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2024-10-15 00:03:17,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:18,736 INFO L124 PetriNetUnfolderBase]: 8587/14053 cut-off events. [2024-10-15 00:03:18,736 INFO L125 PetriNetUnfolderBase]: For 346/346 co-relation queries the response was YES. [2024-10-15 00:03:18,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27148 conditions, 14053 events. 8587/14053 cut-off events. For 346/346 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 104738 event pairs, 7135 based on Foata normal form. 0/9245 useless extension candidates. Maximal degree in co-relation 22801. Up to 10346 conditions per place. [2024-10-15 00:03:18,800 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 89 selfloop transitions, 5 changer transitions 0/111 dead transitions. [2024-10-15 00:03:18,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 111 transitions, 447 flow [2024-10-15 00:03:18,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 00:03:18,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-15 00:03:18,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 195 transitions. [2024-10-15 00:03:18,803 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5735294117647058 [2024-10-15 00:03:18,803 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 148 flow. Second operand 5 states and 195 transitions. [2024-10-15 00:03:18,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 111 transitions, 447 flow [2024-10-15 00:03:18,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 111 transitions, 445 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:03:18,807 INFO L231 Difference]: Finished difference. Result has 69 places, 62 transitions, 171 flow [2024-10-15 00:03:18,807 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=171, PETRI_PLACES=69, PETRI_TRANSITIONS=62} [2024-10-15 00:03:18,808 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 0 predicate places. [2024-10-15 00:03:18,809 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 62 transitions, 171 flow [2024-10-15 00:03:18,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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) [2024-10-15 00:03:18,809 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:18,810 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-15 00:03:18,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-15 00:03:18,810 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-15 00:03:18,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:18,811 INFO L85 PathProgramCache]: Analyzing trace with hash 80416704, now seen corresponding path program 1 times [2024-10-15 00:03:18,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:18,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572065960] [2024-10-15 00:03:18,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:18,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:18,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:18,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:18,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572065960] [2024-10-15 00:03:18,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572065960] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:18,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502099770] [2024-10-15 00:03:18,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:18,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:18,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:18,872 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) [2024-10-15 00:03:18,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 00:03:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:18,943 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:03:18,944 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:18,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:18,965 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:19,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:19,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502099770] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:19,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:19,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-15 00:03:19,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200251901] [2024-10-15 00:03:19,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:19,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-15 00:03:19,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:19,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-15 00:03:19,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-15 00:03:19,015 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 68 [2024-10-15 00:03:19,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 62 transitions, 171 flow. Second operand has 12 states, 12 states have (on average 20.083333333333332) internal successors, (241), 12 states have internal predecessors, (241), 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) [2024-10-15 00:03:19,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:19,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 68 [2024-10-15 00:03:19,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:20,408 INFO L124 PetriNetUnfolderBase]: 7715/12661 cut-off events. [2024-10-15 00:03:20,408 INFO L125 PetriNetUnfolderBase]: For 1862/2132 co-relation queries the response was YES. [2024-10-15 00:03:20,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25825 conditions, 12661 events. 7715/12661 cut-off events. For 1862/2132 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 95185 event pairs, 6979 based on Foata normal form. 3/8399 useless extension candidates. Maximal degree in co-relation 20807. Up to 11056 conditions per place. [2024-10-15 00:03:20,463 INFO L140 encePairwiseOnDemand]: 63/68 looper letters, 41 selfloop transitions, 13 changer transitions 0/71 dead transitions. [2024-10-15 00:03:20,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 71 transitions, 309 flow [2024-10-15 00:03:20,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:03:20,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-15 00:03:20,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 245 transitions. [2024-10-15 00:03:20,465 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3602941176470588 [2024-10-15 00:03:20,465 INFO L175 Difference]: Start difference. First operand has 69 places, 62 transitions, 171 flow. Second operand 10 states and 245 transitions. [2024-10-15 00:03:20,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 71 transitions, 309 flow [2024-10-15 00:03:20,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 71 transitions, 304 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-15 00:03:20,467 INFO L231 Difference]: Finished difference. Result has 79 places, 71 transitions, 240 flow [2024-10-15 00:03:20,467 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=240, PETRI_PLACES=79, PETRI_TRANSITIONS=71} [2024-10-15 00:03:20,468 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 10 predicate places. [2024-10-15 00:03:20,468 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 71 transitions, 240 flow [2024-10-15 00:03:20,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.083333333333332) internal successors, (241), 12 states have internal predecessors, (241), 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) [2024-10-15 00:03:20,468 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:20,468 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:20,490 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-15 00:03:20,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:20,670 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-15 00:03:20,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:20,670 INFO L85 PathProgramCache]: Analyzing trace with hash 957403523, now seen corresponding path program 1 times [2024-10-15 00:03:20,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:20,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970354196] [2024-10-15 00:03:20,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:20,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:20,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:20,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:20,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970354196] [2024-10-15 00:03:20,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970354196] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:20,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:03:20,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-15 00:03:20,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695772218] [2024-10-15 00:03:20,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:20,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 00:03:20,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:20,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 00:03:20,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-15 00:03:20,755 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2024-10-15 00:03:20,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 71 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 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) [2024-10-15 00:03:20,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:20,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2024-10-15 00:03:20,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:21,592 INFO L124 PetriNetUnfolderBase]: 7451/12357 cut-off events. [2024-10-15 00:03:21,593 INFO L125 PetriNetUnfolderBase]: For 1397/1795 co-relation queries the response was YES. [2024-10-15 00:03:21,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24694 conditions, 12357 events. 7451/12357 cut-off events. For 1397/1795 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 93130 event pairs, 6685 based on Foata normal form. 0/7821 useless extension candidates. Maximal degree in co-relation 24657. Up to 10105 conditions per place. [2024-10-15 00:03:21,650 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 81 selfloop transitions, 5 changer transitions 2/105 dead transitions. [2024-10-15 00:03:21,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 105 transitions, 501 flow [2024-10-15 00:03:21,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 00:03:21,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-15 00:03:21,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 180 transitions. [2024-10-15 00:03:21,653 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2024-10-15 00:03:21,653 INFO L175 Difference]: Start difference. First operand has 79 places, 71 transitions, 240 flow. Second operand 5 states and 180 transitions. [2024-10-15 00:03:21,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 105 transitions, 501 flow [2024-10-15 00:03:21,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 105 transitions, 490 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-15 00:03:21,656 INFO L231 Difference]: Finished difference. Result has 83 places, 73 transitions, 254 flow [2024-10-15 00:03:21,656 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=254, PETRI_PLACES=83, PETRI_TRANSITIONS=73} [2024-10-15 00:03:21,656 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 14 predicate places. [2024-10-15 00:03:21,657 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 73 transitions, 254 flow [2024-10-15 00:03:21,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 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) [2024-10-15 00:03:21,657 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:21,657 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:21,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-15 00:03:21,657 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-15 00:03:21,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:21,658 INFO L85 PathProgramCache]: Analyzing trace with hash -26022088, now seen corresponding path program 1 times [2024-10-15 00:03:21,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:21,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524926259] [2024-10-15 00:03:21,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:21,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:21,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:21,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:21,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524926259] [2024-10-15 00:03:21,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524926259] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:21,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769536634] [2024-10-15 00:03:21,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:21,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:21,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:21,817 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) [2024-10-15 00:03:21,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 00:03:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:21,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-15 00:03:21,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:21,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-15 00:03:21,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:21,980 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:22,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-15 00:03:22,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-10-15 00:03:22,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:22,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769536634] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:22,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:22,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-15 00:03:22,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72651598] [2024-10-15 00:03:22,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:22,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-15 00:03:22,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:22,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-15 00:03:22,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-15 00:03:22,060 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 68 [2024-10-15 00:03:22,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 73 transitions, 254 flow. Second operand has 11 states, 11 states have (on average 22.454545454545453) internal successors, (247), 11 states have internal predecessors, (247), 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) [2024-10-15 00:03:22,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:22,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 68 [2024-10-15 00:03:22,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:23,191 INFO L124 PetriNetUnfolderBase]: 6929/12027 cut-off events. [2024-10-15 00:03:23,191 INFO L125 PetriNetUnfolderBase]: For 2004/2467 co-relation queries the response was YES. [2024-10-15 00:03:23,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24839 conditions, 12027 events. 6929/12027 cut-off events. For 2004/2467 co-relation queries the response was YES. Maximal size of possible extension queue 736. Compared 96938 event pairs, 2506 based on Foata normal form. 0/8448 useless extension candidates. Maximal degree in co-relation 24800. Up to 3652 conditions per place. [2024-10-15 00:03:23,299 INFO L140 encePairwiseOnDemand]: 56/68 looper letters, 106 selfloop transitions, 16 changer transitions 1/141 dead transitions. [2024-10-15 00:03:23,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 141 transitions, 658 flow [2024-10-15 00:03:23,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-15 00:03:23,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-15 00:03:23,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 283 transitions. [2024-10-15 00:03:23,305 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5202205882352942 [2024-10-15 00:03:23,305 INFO L175 Difference]: Start difference. First operand has 83 places, 73 transitions, 254 flow. Second operand 8 states and 283 transitions. [2024-10-15 00:03:23,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 141 transitions, 658 flow [2024-10-15 00:03:23,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 141 transitions, 653 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-15 00:03:23,313 INFO L231 Difference]: Finished difference. Result has 90 places, 77 transitions, 314 flow [2024-10-15 00:03:23,313 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=314, PETRI_PLACES=90, PETRI_TRANSITIONS=77} [2024-10-15 00:03:23,314 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 21 predicate places. [2024-10-15 00:03:23,314 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 77 transitions, 314 flow [2024-10-15 00:03:23,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.454545454545453) internal successors, (247), 11 states have internal predecessors, (247), 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) [2024-10-15 00:03:23,314 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:23,314 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:23,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-15 00:03:23,518 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 [2024-10-15 00:03:23,519 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-15 00:03:23,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:23,520 INFO L85 PathProgramCache]: Analyzing trace with hash -26022087, now seen corresponding path program 1 times [2024-10-15 00:03:23,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:23,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913314754] [2024-10-15 00:03:23,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:23,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:23,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:23,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:23,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913314754] [2024-10-15 00:03:23,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913314754] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:23,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833718457] [2024-10-15 00:03:23,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:23,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:23,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:23,732 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:03:23,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-15 00:03:23,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:23,825 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-15 00:03:23,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:23,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-15 00:03:23,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:23,876 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:23,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-10-15 00:03:23,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-10-15 00:03:23,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:23,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833718457] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:23,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:23,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-15 00:03:23,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721358026] [2024-10-15 00:03:23,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:23,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-15 00:03:23,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:23,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-15 00:03:23,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-15 00:03:23,958 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 68 [2024-10-15 00:03:23,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 77 transitions, 314 flow. Second operand has 11 states, 11 states have (on average 22.454545454545453) internal successors, (247), 11 states have internal predecessors, (247), 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) [2024-10-15 00:03:23,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:23,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 68 [2024-10-15 00:03:23,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:25,538 INFO L124 PetriNetUnfolderBase]: 6486/11210 cut-off events. [2024-10-15 00:03:25,538 INFO L125 PetriNetUnfolderBase]: For 5964/6473 co-relation queries the response was YES. [2024-10-15 00:03:25,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26400 conditions, 11210 events. 6486/11210 cut-off events. For 5964/6473 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 87642 event pairs, 2012 based on Foata normal form. 0/8139 useless extension candidates. Maximal degree in co-relation 26358. Up to 3652 conditions per place. [2024-10-15 00:03:25,619 INFO L140 encePairwiseOnDemand]: 56/68 looper letters, 105 selfloop transitions, 16 changer transitions 1/140 dead transitions. [2024-10-15 00:03:25,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 140 transitions, 702 flow [2024-10-15 00:03:25,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-15 00:03:25,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-15 00:03:25,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 282 transitions. [2024-10-15 00:03:25,621 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5183823529411765 [2024-10-15 00:03:25,621 INFO L175 Difference]: Start difference. First operand has 90 places, 77 transitions, 314 flow. Second operand 8 states and 282 transitions. [2024-10-15 00:03:25,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 140 transitions, 702 flow [2024-10-15 00:03:25,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 140 transitions, 685 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-10-15 00:03:25,629 INFO L231 Difference]: Finished difference. Result has 92 places, 76 transitions, 325 flow [2024-10-15 00:03:25,629 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=325, PETRI_PLACES=92, PETRI_TRANSITIONS=76} [2024-10-15 00:03:25,630 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 23 predicate places. [2024-10-15 00:03:25,630 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 76 transitions, 325 flow [2024-10-15 00:03:25,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.454545454545453) internal successors, (247), 11 states have internal predecessors, (247), 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) [2024-10-15 00:03:25,630 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:25,630 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:25,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-15 00:03:25,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:25,831 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-15 00:03:25,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:25,832 INFO L85 PathProgramCache]: Analyzing trace with hash 927073217, now seen corresponding path program 1 times [2024-10-15 00:03:25,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:25,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525158786] [2024-10-15 00:03:25,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:25,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:25,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:25,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:25,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:25,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525158786] [2024-10-15 00:03:25,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525158786] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:25,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:03:25,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-15 00:03:25,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605699165] [2024-10-15 00:03:25,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:25,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 00:03:25,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:25,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 00:03:25,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-15 00:03:25,902 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2024-10-15 00:03:25,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 76 transitions, 325 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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) [2024-10-15 00:03:25,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:25,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2024-10-15 00:03:25,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:26,894 INFO L124 PetriNetUnfolderBase]: 6853/10765 cut-off events. [2024-10-15 00:03:26,894 INFO L125 PetriNetUnfolderBase]: For 10100/10764 co-relation queries the response was YES. [2024-10-15 00:03:26,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27677 conditions, 10765 events. 6853/10765 cut-off events. For 10100/10764 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 75247 event pairs, 6050 based on Foata normal form. 0/7746 useless extension candidates. Maximal degree in co-relation 27635. Up to 9539 conditions per place. [2024-10-15 00:03:26,936 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 52 selfloop transitions, 2 changer transitions 22/93 dead transitions. [2024-10-15 00:03:26,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 93 transitions, 533 flow [2024-10-15 00:03:26,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 00:03:26,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-15 00:03:26,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 165 transitions. [2024-10-15 00:03:26,937 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4852941176470588 [2024-10-15 00:03:26,937 INFO L175 Difference]: Start difference. First operand has 92 places, 76 transitions, 325 flow. Second operand 5 states and 165 transitions. [2024-10-15 00:03:26,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 93 transitions, 533 flow [2024-10-15 00:03:26,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 93 transitions, 518 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-15 00:03:26,942 INFO L231 Difference]: Finished difference. Result has 93 places, 71 transitions, 292 flow [2024-10-15 00:03:26,942 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=292, PETRI_PLACES=93, PETRI_TRANSITIONS=71} [2024-10-15 00:03:26,942 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 24 predicate places. [2024-10-15 00:03:26,943 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 71 transitions, 292 flow [2024-10-15 00:03:26,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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) [2024-10-15 00:03:26,943 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:26,943 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:26,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-15 00:03:26,943 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-15 00:03:26,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:26,944 INFO L85 PathProgramCache]: Analyzing trace with hash 725376329, now seen corresponding path program 1 times [2024-10-15 00:03:26,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:26,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913246822] [2024-10-15 00:03:26,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:26,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:27,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:27,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:27,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913246822] [2024-10-15 00:03:27,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913246822] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:27,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714644409] [2024-10-15 00:03:27,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:27,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:27,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:27,071 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:03:27,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-15 00:03:27,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:27,152 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-15 00:03:27,154 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:27,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-15 00:03:27,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:27,236 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:27,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-15 00:03:27,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-10-15 00:03:27,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:27,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714644409] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:27,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:27,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-15 00:03:27,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590996624] [2024-10-15 00:03:27,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:27,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-15 00:03:27,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:27,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-15 00:03:27,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-15 00:03:27,329 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 68 [2024-10-15 00:03:27,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 71 transitions, 292 flow. Second operand has 11 states, 11 states have (on average 22.818181818181817) internal successors, (251), 11 states have internal predecessors, (251), 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) [2024-10-15 00:03:27,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:27,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 68 [2024-10-15 00:03:27,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:28,895 INFO L124 PetriNetUnfolderBase]: 10422/17439 cut-off events. [2024-10-15 00:03:28,896 INFO L125 PetriNetUnfolderBase]: For 13365/14627 co-relation queries the response was YES. [2024-10-15 00:03:28,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43230 conditions, 17439 events. 10422/17439 cut-off events. For 13365/14627 co-relation queries the response was YES. Maximal size of possible extension queue 887. Compared 136632 event pairs, 2617 based on Foata normal form. 0/12753 useless extension candidates. Maximal degree in co-relation 43201. Up to 5706 conditions per place. [2024-10-15 00:03:28,971 INFO L140 encePairwiseOnDemand]: 56/68 looper letters, 95 selfloop transitions, 15 changer transitions 0/128 dead transitions. [2024-10-15 00:03:28,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 128 transitions, 750 flow [2024-10-15 00:03:28,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-15 00:03:28,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-15 00:03:28,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 261 transitions. [2024-10-15 00:03:28,973 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4797794117647059 [2024-10-15 00:03:28,973 INFO L175 Difference]: Start difference. First operand has 93 places, 71 transitions, 292 flow. Second operand 8 states and 261 transitions. [2024-10-15 00:03:28,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 128 transitions, 750 flow [2024-10-15 00:03:28,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 128 transitions, 710 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-10-15 00:03:28,990 INFO L231 Difference]: Finished difference. Result has 89 places, 77 transitions, 339 flow [2024-10-15 00:03:28,990 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=339, PETRI_PLACES=89, PETRI_TRANSITIONS=77} [2024-10-15 00:03:28,991 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 20 predicate places. [2024-10-15 00:03:28,991 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 77 transitions, 339 flow [2024-10-15 00:03:28,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.818181818181817) internal successors, (251), 11 states have internal predecessors, (251), 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) [2024-10-15 00:03:28,991 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:28,992 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:29,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-15 00:03:29,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-15 00:03:29,196 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-15 00:03:29,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:29,197 INFO L85 PathProgramCache]: Analyzing trace with hash 725376333, now seen corresponding path program 1 times [2024-10-15 00:03:29,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:29,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403099976] [2024-10-15 00:03:29,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:29,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:29,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:29,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:29,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403099976] [2024-10-15 00:03:29,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403099976] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:29,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:03:29,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-15 00:03:29,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715205052] [2024-10-15 00:03:29,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:29,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:03:29,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:29,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:03:29,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:03:29,250 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 68 [2024-10-15 00:03:29,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 77 transitions, 339 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:29,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:29,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 68 [2024-10-15 00:03:29,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:31,158 INFO L124 PetriNetUnfolderBase]: 15974/26025 cut-off events. [2024-10-15 00:03:31,159 INFO L125 PetriNetUnfolderBase]: For 21984/21984 co-relation queries the response was YES. [2024-10-15 00:03:31,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69754 conditions, 26025 events. 15974/26025 cut-off events. For 21984/21984 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 210388 event pairs, 4774 based on Foata normal form. 0/20004 useless extension candidates. Maximal degree in co-relation 69718. Up to 15895 conditions per place. [2024-10-15 00:03:31,377 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 95 selfloop transitions, 6 changer transitions 0/117 dead transitions. [2024-10-15 00:03:31,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 117 transitions, 709 flow [2024-10-15 00:03:31,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:03:31,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:03:31,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 132 transitions. [2024-10-15 00:03:31,378 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2024-10-15 00:03:31,378 INFO L175 Difference]: Start difference. First operand has 89 places, 77 transitions, 339 flow. Second operand 3 states and 132 transitions. [2024-10-15 00:03:31,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 117 transitions, 709 flow [2024-10-15 00:03:31,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 117 transitions, 699 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-15 00:03:31,391 INFO L231 Difference]: Finished difference. Result has 89 places, 82 transitions, 384 flow [2024-10-15 00:03:31,391 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=384, PETRI_PLACES=89, PETRI_TRANSITIONS=82} [2024-10-15 00:03:31,392 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 20 predicate places. [2024-10-15 00:03:31,392 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 82 transitions, 384 flow [2024-10-15 00:03:31,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:31,392 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:31,392 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:31,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-15 00:03:31,393 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-15 00:03:31,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:31,393 INFO L85 PathProgramCache]: Analyzing trace with hash 725376330, now seen corresponding path program 1 times [2024-10-15 00:03:31,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:31,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877843014] [2024-10-15 00:03:31,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:31,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:31,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:31,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:31,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877843014] [2024-10-15 00:03:31,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877843014] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:31,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786067769] [2024-10-15 00:03:31,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:31,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:31,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:31,536 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:03:31,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-15 00:03:31,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:31,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-15 00:03:31,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:31,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-15 00:03:31,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:31,651 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:31,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-10-15 00:03:31,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-10-15 00:03:31,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:31,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786067769] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:31,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:31,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-10-15 00:03:31,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860502285] [2024-10-15 00:03:31,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:31,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-15 00:03:31,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:31,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-15 00:03:31,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-15 00:03:31,707 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 68 [2024-10-15 00:03:31,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 82 transitions, 384 flow. Second operand has 10 states, 10 states have (on average 22.8) internal successors, (228), 10 states have internal predecessors, (228), 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) [2024-10-15 00:03:31,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:31,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 68 [2024-10-15 00:03:31,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:33,404 INFO L124 PetriNetUnfolderBase]: 12806/21687 cut-off events. [2024-10-15 00:03:33,405 INFO L125 PetriNetUnfolderBase]: For 24743/24791 co-relation queries the response was YES. [2024-10-15 00:03:33,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61768 conditions, 21687 events. 12806/21687 cut-off events. For 24743/24791 co-relation queries the response was YES. Maximal size of possible extension queue 1074. Compared 180285 event pairs, 3063 based on Foata normal form. 0/18968 useless extension candidates. Maximal degree in co-relation 61732. Up to 6587 conditions per place. [2024-10-15 00:03:33,596 INFO L140 encePairwiseOnDemand]: 56/68 looper letters, 98 selfloop transitions, 16 changer transitions 0/134 dead transitions. [2024-10-15 00:03:33,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 134 transitions, 836 flow [2024-10-15 00:03:33,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-15 00:03:33,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-15 00:03:33,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 260 transitions. [2024-10-15 00:03:33,598 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47794117647058826 [2024-10-15 00:03:33,598 INFO L175 Difference]: Start difference. First operand has 89 places, 82 transitions, 384 flow. Second operand 8 states and 260 transitions. [2024-10-15 00:03:33,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 134 transitions, 836 flow [2024-10-15 00:03:33,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 134 transitions, 820 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-15 00:03:33,639 INFO L231 Difference]: Finished difference. Result has 94 places, 81 transitions, 400 flow [2024-10-15 00:03:33,640 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=400, PETRI_PLACES=94, PETRI_TRANSITIONS=81} [2024-10-15 00:03:33,640 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 25 predicate places. [2024-10-15 00:03:33,640 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 81 transitions, 400 flow [2024-10-15 00:03:33,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.8) internal successors, (228), 10 states have internal predecessors, (228), 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) [2024-10-15 00:03:33,641 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:33,641 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:33,655 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-15 00:03:33,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:33,844 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-15 00:03:33,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:33,845 INFO L85 PathProgramCache]: Analyzing trace with hash 725376332, now seen corresponding path program 1 times [2024-10-15 00:03:33,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:33,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91661282] [2024-10-15 00:03:33,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:33,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:33,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:33,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:33,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:33,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91661282] [2024-10-15 00:03:33,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91661282] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:33,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:03:33,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-15 00:03:33,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270235667] [2024-10-15 00:03:33,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:33,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:03:33,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:33,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:03:33,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:03:33,920 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 68 [2024-10-15 00:03:33,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 81 transitions, 400 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:33,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:33,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 68 [2024-10-15 00:03:33,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:36,643 INFO L124 PetriNetUnfolderBase]: 15470/25731 cut-off events. [2024-10-15 00:03:36,644 INFO L125 PetriNetUnfolderBase]: For 33291/33291 co-relation queries the response was YES. [2024-10-15 00:03:36,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75504 conditions, 25731 events. 15470/25731 cut-off events. For 33291/33291 co-relation queries the response was YES. Maximal size of possible extension queue 1197. Compared 211244 event pairs, 3817 based on Foata normal form. 296/22262 useless extension candidates. Maximal degree in co-relation 75466. Up to 16764 conditions per place. [2024-10-15 00:03:36,900 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 98 selfloop transitions, 8 changer transitions 0/122 dead transitions. [2024-10-15 00:03:36,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 122 transitions, 808 flow [2024-10-15 00:03:36,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:03:36,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:03:36,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 132 transitions. [2024-10-15 00:03:36,901 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2024-10-15 00:03:36,901 INFO L175 Difference]: Start difference. First operand has 94 places, 81 transitions, 400 flow. Second operand 3 states and 132 transitions. [2024-10-15 00:03:36,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 122 transitions, 808 flow [2024-10-15 00:03:36,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 122 transitions, 792 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-15 00:03:36,924 INFO L231 Difference]: Finished difference. Result has 93 places, 88 transitions, 478 flow [2024-10-15 00:03:36,924 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=478, PETRI_PLACES=93, PETRI_TRANSITIONS=88} [2024-10-15 00:03:36,924 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 24 predicate places. [2024-10-15 00:03:36,925 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 88 transitions, 478 flow [2024-10-15 00:03:36,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:36,925 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:36,925 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:36,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-15 00:03:36,925 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-15 00:03:36,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:36,926 INFO L85 PathProgramCache]: Analyzing trace with hash -2128951052, now seen corresponding path program 1 times [2024-10-15 00:03:36,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:36,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826137690] [2024-10-15 00:03:36,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:36,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:36,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:36,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:36,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826137690] [2024-10-15 00:03:36,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826137690] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:36,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:03:36,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:03:36,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033744775] [2024-10-15 00:03:36,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:36,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:03:36,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:36,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:03:36,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:03:36,966 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 68 [2024-10-15 00:03:36,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 88 transitions, 478 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:36,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:36,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 68 [2024-10-15 00:03:36,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:39,687 INFO L124 PetriNetUnfolderBase]: 15865/27424 cut-off events. [2024-10-15 00:03:39,687 INFO L125 PetriNetUnfolderBase]: For 44977/45285 co-relation queries the response was YES. [2024-10-15 00:03:39,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81262 conditions, 27424 events. 15865/27424 cut-off events. For 44977/45285 co-relation queries the response was YES. Maximal size of possible extension queue 1284. Compared 235354 event pairs, 8940 based on Foata normal form. 992/25313 useless extension candidates. Maximal degree in co-relation 81224. Up to 18578 conditions per place. [2024-10-15 00:03:39,923 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 131 selfloop transitions, 4 changer transitions 0/157 dead transitions. [2024-10-15 00:03:39,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 157 transitions, 1124 flow [2024-10-15 00:03:39,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:03:39,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:03:39,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 169 transitions. [2024-10-15 00:03:39,925 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6213235294117647 [2024-10-15 00:03:39,925 INFO L175 Difference]: Start difference. First operand has 93 places, 88 transitions, 478 flow. Second operand 4 states and 169 transitions. [2024-10-15 00:03:39,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 157 transitions, 1124 flow [2024-10-15 00:03:39,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 157 transitions, 1096 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-15 00:03:39,974 INFO L231 Difference]: Finished difference. Result has 96 places, 89 transitions, 483 flow [2024-10-15 00:03:39,974 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=483, PETRI_PLACES=96, PETRI_TRANSITIONS=89} [2024-10-15 00:03:39,974 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 27 predicate places. [2024-10-15 00:03:39,974 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 89 transitions, 483 flow [2024-10-15 00:03:39,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:39,975 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:39,975 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:39,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-15 00:03:39,975 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-15 00:03:39,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:39,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1287242055, now seen corresponding path program 1 times [2024-10-15 00:03:39,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:39,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648192813] [2024-10-15 00:03:39,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:39,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:40,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:40,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:40,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648192813] [2024-10-15 00:03:40,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648192813] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:40,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435999191] [2024-10-15 00:03:40,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:40,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:40,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:40,182 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:03:40,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-15 00:03:40,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:40,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-15 00:03:40,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:40,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-10-15 00:03:40,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:40,536 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:40,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-10-15 00:03:40,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-10-15 00:03:40,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:40,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435999191] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:40,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:40,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2024-10-15 00:03:40,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546129189] [2024-10-15 00:03:40,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:40,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-15 00:03:40,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:40,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-15 00:03:40,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2024-10-15 00:03:41,009 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 68 [2024-10-15 00:03:41,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 89 transitions, 483 flow. Second operand has 20 states, 20 states have (on average 19.8) internal successors, (396), 20 states have internal predecessors, (396), 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) [2024-10-15 00:03:41,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:41,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 68 [2024-10-15 00:03:41,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:53,919 INFO L124 PetriNetUnfolderBase]: 53200/85431 cut-off events. [2024-10-15 00:03:53,920 INFO L125 PetriNetUnfolderBase]: For 144836/145676 co-relation queries the response was YES. [2024-10-15 00:03:54,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278234 conditions, 85431 events. 53200/85431 cut-off events. For 144836/145676 co-relation queries the response was YES. Maximal size of possible extension queue 3434. Compared 782559 event pairs, 18176 based on Foata normal form. 336/70879 useless extension candidates. Maximal degree in co-relation 278194. Up to 12910 conditions per place. [2024-10-15 00:03:55,082 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 325 selfloop transitions, 40 changer transitions 0/387 dead transitions. [2024-10-15 00:03:55,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 387 transitions, 2993 flow [2024-10-15 00:03:55,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-15 00:03:55,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-15 00:03:55,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 532 transitions. [2024-10-15 00:03:55,085 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5215686274509804 [2024-10-15 00:03:55,086 INFO L175 Difference]: Start difference. First operand has 96 places, 89 transitions, 483 flow. Second operand 15 states and 532 transitions. [2024-10-15 00:03:55,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 387 transitions, 2993 flow [2024-10-15 00:03:55,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 387 transitions, 2939 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-15 00:03:55,157 INFO L231 Difference]: Finished difference. Result has 112 places, 122 transitions, 741 flow [2024-10-15 00:03:55,158 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=741, PETRI_PLACES=112, PETRI_TRANSITIONS=122} [2024-10-15 00:03:55,159 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 43 predicate places. [2024-10-15 00:03:55,159 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 122 transitions, 741 flow [2024-10-15 00:03:55,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 19.8) internal successors, (396), 20 states have internal predecessors, (396), 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) [2024-10-15 00:03:55,160 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:55,160 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:55,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-15 00:03:55,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:55,362 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-10-15 00:03:55,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:55,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1287242056, now seen corresponding path program 1 times [2024-10-15 00:03:55,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:55,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259408123] [2024-10-15 00:03:55,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:55,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:55,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:55,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:55,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259408123] [2024-10-15 00:03:55,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259408123] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:55,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204880479] [2024-10-15 00:03:55,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:55,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:55,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:55,709 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:03:55,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-15 00:03:55,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:55,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-15 00:03:55,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:55,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-10-15 00:03:56,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:56,204 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:56,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-10-15 00:03:56,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2024-10-15 00:03:56,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:56,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204880479] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:56,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:56,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2024-10-15 00:03:56,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235202851] [2024-10-15 00:03:56,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:56,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-15 00:03:56,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:56,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-15 00:03:56,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2024-10-15 00:03:56,693 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 68 [2024-10-15 00:03:56,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 122 transitions, 741 flow. Second operand has 20 states, 20 states have (on average 19.8) internal successors, (396), 20 states have internal predecessors, (396), 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) [2024-10-15 00:03:56,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:56,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 68 [2024-10-15 00:03:56,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand