./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-counter-determinism.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 981eae178b9cad0bb64b87dda8360f4f1e2e23d7b9d396f9db2ad5a6977098c4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:54:50,067 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:54:50,138 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:54:50,143 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:54:50,144 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:54:50,190 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:54:50,191 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:54:50,191 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:54:50,192 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:54:50,192 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:54:50,192 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:54:50,193 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:54:50,194 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:54:50,197 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:54:50,197 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:54:50,198 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:54:50,200 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:54:50,205 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:54:50,206 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:54:50,206 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:54:50,206 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:54:50,207 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:54:50,207 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:54:50,208 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:54:50,208 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:54:50,208 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:54:50,208 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:54:50,209 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:54:50,209 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:54:50,209 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:54:50,210 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:54:50,210 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:54:50,210 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:54:50,211 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:54:50,211 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:54:50,211 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:54:50,211 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:54:50,211 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:54:50,212 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:54:50,212 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:54:50,212 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:54:50,212 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:54:50,213 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:54:50,213 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:54:50,213 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 981eae178b9cad0bb64b87dda8360f4f1e2e23d7b9d396f9db2ad5a6977098c4 [2024-11-17 07:54:50,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:54:50,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:54:50,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:54:50,484 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:54:50,485 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:54:50,486 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2024-11-17 07:54:51,903 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:54:52,076 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:54:52,078 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2024-11-17 07:54:52,085 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9480e2f7f/a0ca3cd12f3043be9dd6e966602c895d/FLAGb1a9bfde1 [2024-11-17 07:54:52,097 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9480e2f7f/a0ca3cd12f3043be9dd6e966602c895d [2024-11-17 07:54:52,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:54:52,102 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:54:52,103 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:54:52,103 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:54:52,110 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:54:52,111 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:54:52" (1/1) ... [2024-11-17 07:54:52,112 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@433c18b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:54:52, skipping insertion in model container [2024-11-17 07:54:52,113 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:54:52" (1/1) ... [2024-11-17 07:54:52,139 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:54:52,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:54:52,369 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:54:52,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:54:52,417 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:54:52,418 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:54:52 WrapperNode [2024-11-17 07:54:52,418 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:54:52,423 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:54:52,423 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:54:52,423 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:54:52,432 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:54:52" (1/1) ... [2024-11-17 07:54:52,442 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:54:52" (1/1) ... [2024-11-17 07:54:52,474 INFO L138 Inliner]: procedures = 20, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 102 [2024-11-17 07:54:52,474 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:54:52,475 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:54:52,475 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:54:52,475 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:54:52,490 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:54:52" (1/1) ... [2024-11-17 07:54:52,494 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:54:52" (1/1) ... [2024-11-17 07:54:52,496 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:54:52" (1/1) ... [2024-11-17 07:54:52,518 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-17 07:54:52,518 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:54:52" (1/1) ... [2024-11-17 07:54:52,519 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:54:52" (1/1) ... [2024-11-17 07:54:52,528 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:54:52" (1/1) ... [2024-11-17 07:54:52,532 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:54:52" (1/1) ... [2024-11-17 07:54:52,534 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:54:52" (1/1) ... [2024-11-17 07:54:52,535 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:54:52" (1/1) ... [2024-11-17 07:54:52,537 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:54:52,537 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:54:52,538 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:54:52,538 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:54:52,539 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:54:52" (1/1) ... [2024-11-17 07:54:52,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:54:52,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:54:52,567 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-17 07:54:52,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-17 07:54:52,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:54:52,607 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-17 07:54:52,607 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-17 07:54:52,608 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-17 07:54:52,608 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-17 07:54:52,608 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-17 07:54:52,608 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-17 07:54:52,608 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-17 07:54:52,608 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-17 07:54:52,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:54:52,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:54:52,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:54:52,610 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 07:54:52,693 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:54:52,695 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:54:52,988 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:54:52,988 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:54:53,114 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:54:53,114 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:54:53,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:54:53 BoogieIcfgContainer [2024-11-17 07:54:53,115 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:54:53,118 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:54:53,118 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:54:53,123 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:54:53,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:54:52" (1/3) ... [2024-11-17 07:54:53,124 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f28496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:54:53, skipping insertion in model container [2024-11-17 07:54:53,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:54:52" (2/3) ... [2024-11-17 07:54:53,126 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f28496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:54:53, skipping insertion in model container [2024-11-17 07:54:53,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:54:53" (3/3) ... [2024-11-17 07:54:53,127 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-determinism.wvr.c [2024-11-17 07:54:53,143 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:54:53,143 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-11-17 07:54:53,144 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:54:53,230 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-17 07:54:53,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 74 transitions, 176 flow [2024-11-17 07:54:53,330 INFO L124 PetriNetUnfolderBase]: 8/70 cut-off events. [2024-11-17 07:54:53,330 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-17 07:54:53,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 70 events. 8/70 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 211 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2024-11-17 07:54:53,339 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 74 transitions, 176 flow [2024-11-17 07:54:53,358 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 68 transitions, 157 flow [2024-11-17 07:54:53,372 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:54:53,380 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;@f3cc4a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:54:53,380 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-11-17 07:54:53,388 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:54:53,389 INFO L124 PetriNetUnfolderBase]: 1/12 cut-off events. [2024-11-17 07:54:53,389 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:54:53,389 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:54:53,391 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 07:54:53,391 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-17 07:54:53,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:54:53,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1778668047, now seen corresponding path program 1 times [2024-11-17 07:54:53,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:54:53,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582047893] [2024-11-17 07:54:53,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:54:53,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:54:53,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:54:53,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:54:53,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:54:53,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582047893] [2024-11-17 07:54:53,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582047893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:54:53,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:54:53,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 07:54:53,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237854253] [2024-11-17 07:54:53,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:54:53,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:54:53,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:54:53,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:54:53,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:54:53,702 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 74 [2024-11-17 07:54:53,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 157 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:54:53,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:54:53,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 74 [2024-11-17 07:54:53,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:54:57,179 INFO L124 PetriNetUnfolderBase]: 26633/40137 cut-off events. [2024-11-17 07:54:57,179 INFO L125 PetriNetUnfolderBase]: For 1946/1946 co-relation queries the response was YES. [2024-11-17 07:54:57,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76511 conditions, 40137 events. 26633/40137 cut-off events. For 1946/1946 co-relation queries the response was YES. Maximal size of possible extension queue 2349. Compared 319879 event pairs, 6878 based on Foata normal form. 5134/35468 useless extension candidates. Maximal degree in co-relation 70203. Up to 29555 conditions per place. [2024-11-17 07:54:57,557 INFO L140 encePairwiseOnDemand]: 65/74 looper letters, 69 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2024-11-17 07:54:57,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 93 transitions, 367 flow [2024-11-17 07:54:57,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:54:57,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:54:57,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 160 transitions. [2024-11-17 07:54:57,572 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7207207207207207 [2024-11-17 07:54:57,574 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 157 flow. Second operand 3 states and 160 transitions. [2024-11-17 07:54:57,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 93 transitions, 367 flow [2024-11-17 07:54:57,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 93 transitions, 343 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-17 07:54:57,640 INFO L231 Difference]: Finished difference. Result has 69 places, 65 transitions, 152 flow [2024-11-17 07:54:57,643 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=69, PETRI_TRANSITIONS=65} [2024-11-17 07:54:57,648 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -4 predicate places. [2024-11-17 07:54:57,648 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 65 transitions, 152 flow [2024-11-17 07:54:57,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:54:57,649 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:54:57,649 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:54:57,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:54:57,650 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-17 07:54:57,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:54:57,651 INFO L85 PathProgramCache]: Analyzing trace with hash 97004341, now seen corresponding path program 1 times [2024-11-17 07:54:57,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:54:57,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242069771] [2024-11-17 07:54:57,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:54:57,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:54:57,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:54:57,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:54:57,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:54:57,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242069771] [2024-11-17 07:54:57,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242069771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:54:57,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:54:57,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:54:57,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952476522] [2024-11-17 07:54:57,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:54:57,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:54:57,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:54:57,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:54:57,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:54:57,785 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 74 [2024-11-17 07:54:57,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 65 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:54:57,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:54:57,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 74 [2024-11-17 07:54:57,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:01,503 INFO L124 PetriNetUnfolderBase]: 40657/61136 cut-off events. [2024-11-17 07:55:01,503 INFO L125 PetriNetUnfolderBase]: For 3026/3026 co-relation queries the response was YES. [2024-11-17 07:55:01,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120496 conditions, 61136 events. 40657/61136 cut-off events. For 3026/3026 co-relation queries the response was YES. Maximal size of possible extension queue 3344. Compared 504631 event pairs, 15676 based on Foata normal form. 1026/46091 useless extension candidates. Maximal degree in co-relation 59805. Up to 42823 conditions per place. [2024-11-17 07:55:02,143 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 104 selfloop transitions, 4 changer transitions 0/128 dead transitions. [2024-11-17 07:55:02,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 128 transitions, 506 flow [2024-11-17 07:55:02,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:55:02,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:55:02,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 206 transitions. [2024-11-17 07:55:02,149 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6959459459459459 [2024-11-17 07:55:02,149 INFO L175 Difference]: Start difference. First operand has 69 places, 65 transitions, 152 flow. Second operand 4 states and 206 transitions. [2024-11-17 07:55:02,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 128 transitions, 506 flow [2024-11-17 07:55:02,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 128 transitions, 504 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:55:02,158 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 179 flow [2024-11-17 07:55:02,159 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2024-11-17 07:55:02,160 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 0 predicate places. [2024-11-17 07:55:02,160 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 179 flow [2024-11-17 07:55:02,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:02,160 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:02,161 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:55:02,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 07:55:02,161 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-17 07:55:02,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:02,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1645342710, now seen corresponding path program 1 times [2024-11-17 07:55:02,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:02,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422391197] [2024-11-17 07:55:02,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:02,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:02,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:02,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:02,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:02,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422391197] [2024-11-17 07:55:02,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422391197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:55:02,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:55:02,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 07:55:02,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443444119] [2024-11-17 07:55:02,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:55:02,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:55:02,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:02,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:55:02,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:55:02,258 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 74 [2024-11-17 07:55:02,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:02,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:02,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 74 [2024-11-17 07:55:02,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:05,180 INFO L124 PetriNetUnfolderBase]: 34577/53440 cut-off events. [2024-11-17 07:55:05,180 INFO L125 PetriNetUnfolderBase]: For 12384/14112 co-relation queries the response was YES. [2024-11-17 07:55:05,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113896 conditions, 53440 events. 34577/53440 cut-off events. For 12384/14112 co-relation queries the response was YES. Maximal size of possible extension queue 2541. Compared 437690 event pairs, 8936 based on Foata normal form. 368/41432 useless extension candidates. Maximal degree in co-relation 45213. Up to 37724 conditions per place. [2024-11-17 07:55:05,515 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 72 selfloop transitions, 2 changer transitions 1/97 dead transitions. [2024-11-17 07:55:05,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 97 transitions, 421 flow [2024-11-17 07:55:05,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:55:05,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:55:05,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2024-11-17 07:55:05,519 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-17 07:55:05,520 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 179 flow. Second operand 3 states and 148 transitions. [2024-11-17 07:55:05,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 97 transitions, 421 flow [2024-11-17 07:55:05,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 97 transitions, 415 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:55:05,533 INFO L231 Difference]: Finished difference. Result has 75 places, 69 transitions, 192 flow [2024-11-17 07:55:05,533 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=75, PETRI_TRANSITIONS=69} [2024-11-17 07:55:05,535 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 2 predicate places. [2024-11-17 07:55:05,536 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 69 transitions, 192 flow [2024-11-17 07:55:05,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:05,537 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:05,537 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:55:05,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 07:55:05,537 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-17 07:55:05,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:05,538 INFO L85 PathProgramCache]: Analyzing trace with hash 227348199, now seen corresponding path program 1 times [2024-11-17 07:55:05,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:05,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121318435] [2024-11-17 07:55:05,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:05,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:05,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:05,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:05,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:05,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121318435] [2024-11-17 07:55:05,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121318435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:55:05,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:55:05,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:55:05,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884959837] [2024-11-17 07:55:05,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:55:05,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:55:05,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:05,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:55:05,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:55:05,615 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 74 [2024-11-17 07:55:05,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 69 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:05,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:05,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 74 [2024-11-17 07:55:05,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:08,473 INFO L124 PetriNetUnfolderBase]: 31801/49455 cut-off events. [2024-11-17 07:55:08,473 INFO L125 PetriNetUnfolderBase]: For 12879/13629 co-relation queries the response was YES. [2024-11-17 07:55:08,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110186 conditions, 49455 events. 31801/49455 cut-off events. For 12879/13629 co-relation queries the response was YES. Maximal size of possible extension queue 2216. Compared 408081 event pairs, 19145 based on Foata normal form. 0/38913 useless extension candidates. Maximal degree in co-relation 36010. Up to 29306 conditions per place. [2024-11-17 07:55:08,808 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 79 selfloop transitions, 3 changer transitions 0/104 dead transitions. [2024-11-17 07:55:08,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 104 transitions, 460 flow [2024-11-17 07:55:08,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:55:08,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:55:08,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 154 transitions. [2024-11-17 07:55:08,810 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6936936936936937 [2024-11-17 07:55:08,810 INFO L175 Difference]: Start difference. First operand has 75 places, 69 transitions, 192 flow. Second operand 3 states and 154 transitions. [2024-11-17 07:55:08,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 104 transitions, 460 flow [2024-11-17 07:55:08,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 104 transitions, 457 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:55:08,820 INFO L231 Difference]: Finished difference. Result has 77 places, 70 transitions, 214 flow [2024-11-17 07:55:08,821 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=77, PETRI_TRANSITIONS=70} [2024-11-17 07:55:08,821 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 4 predicate places. [2024-11-17 07:55:08,822 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 70 transitions, 214 flow [2024-11-17 07:55:08,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:08,822 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:08,822 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:55:08,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 07:55:08,822 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-17 07:55:08,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:08,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1111186114, now seen corresponding path program 1 times [2024-11-17 07:55:08,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:08,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155276506] [2024-11-17 07:55:08,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:08,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:08,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:08,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:08,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155276506] [2024-11-17 07:55:08,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155276506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:55:08,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:55:08,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:55:08,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91515576] [2024-11-17 07:55:08,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:55:08,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:55:08,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:08,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:55:08,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:55:08,897 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 74 [2024-11-17 07:55:08,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 70 transitions, 214 flow. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:08,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:08,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 74 [2024-11-17 07:55:08,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:12,433 INFO L124 PetriNetUnfolderBase]: 37799/59561 cut-off events. [2024-11-17 07:55:12,434 INFO L125 PetriNetUnfolderBase]: For 32993/33127 co-relation queries the response was YES. [2024-11-17 07:55:12,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140255 conditions, 59561 events. 37799/59561 cut-off events. For 32993/33127 co-relation queries the response was YES. Maximal size of possible extension queue 2266. Compared 503361 event pairs, 5739 based on Foata normal form. 1533/52885 useless extension candidates. Maximal degree in co-relation 69217. Up to 24870 conditions per place. [2024-11-17 07:55:12,896 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 107 selfloop transitions, 4 changer transitions 0/133 dead transitions. [2024-11-17 07:55:12,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 133 transitions, 614 flow [2024-11-17 07:55:12,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:55:12,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:55:12,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 212 transitions. [2024-11-17 07:55:12,898 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7162162162162162 [2024-11-17 07:55:12,899 INFO L175 Difference]: Start difference. First operand has 77 places, 70 transitions, 214 flow. Second operand 4 states and 212 transitions. [2024-11-17 07:55:12,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 133 transitions, 614 flow [2024-11-17 07:55:13,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 133 transitions, 604 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:55:13,014 INFO L231 Difference]: Finished difference. Result has 80 places, 72 transitions, 242 flow [2024-11-17 07:55:13,014 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=242, PETRI_PLACES=80, PETRI_TRANSITIONS=72} [2024-11-17 07:55:13,015 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 7 predicate places. [2024-11-17 07:55:13,015 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 72 transitions, 242 flow [2024-11-17 07:55:13,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:13,016 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:13,016 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:55:13,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 07:55:13,016 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-17 07:55:13,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:13,017 INFO L85 PathProgramCache]: Analyzing trace with hash 626393978, now seen corresponding path program 1 times [2024-11-17 07:55:13,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:13,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860947700] [2024-11-17 07:55:13,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:13,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:13,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:13,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:13,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860947700] [2024-11-17 07:55:13,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860947700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:55:13,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:55:13,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:55:13,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088444299] [2024-11-17 07:55:13,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:55:13,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:55:13,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:13,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:55:13,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:55:13,074 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 74 [2024-11-17 07:55:13,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 72 transitions, 242 flow. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 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) [2024-11-17 07:55:13,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:13,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 74 [2024-11-17 07:55:13,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:18,692 INFO L124 PetriNetUnfolderBase]: 58623/89208 cut-off events. [2024-11-17 07:55:18,693 INFO L125 PetriNetUnfolderBase]: For 66631/68432 co-relation queries the response was YES. [2024-11-17 07:55:18,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214352 conditions, 89208 events. 58623/89208 cut-off events. For 66631/68432 co-relation queries the response was YES. Maximal size of possible extension queue 3194. Compared 749843 event pairs, 31608 based on Foata normal form. 1558/77869 useless extension candidates. Maximal degree in co-relation 82690. Up to 61047 conditions per place. [2024-11-17 07:55:19,289 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 121 selfloop transitions, 4 changer transitions 0/145 dead transitions. [2024-11-17 07:55:19,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 145 transitions, 788 flow [2024-11-17 07:55:19,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:55:19,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:55:19,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 199 transitions. [2024-11-17 07:55:19,291 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6722972972972973 [2024-11-17 07:55:19,291 INFO L175 Difference]: Start difference. First operand has 80 places, 72 transitions, 242 flow. Second operand 4 states and 199 transitions. [2024-11-17 07:55:19,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 145 transitions, 788 flow [2024-11-17 07:55:19,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 145 transitions, 784 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:55:19,307 INFO L231 Difference]: Finished difference. Result has 84 places, 75 transitions, 269 flow [2024-11-17 07:55:19,307 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=269, PETRI_PLACES=84, PETRI_TRANSITIONS=75} [2024-11-17 07:55:19,308 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 11 predicate places. [2024-11-17 07:55:19,309 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 75 transitions, 269 flow [2024-11-17 07:55:19,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 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) [2024-11-17 07:55:19,309 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:19,309 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:55:19,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 07:55:19,309 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-17 07:55:19,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:19,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1128661002, now seen corresponding path program 1 times [2024-11-17 07:55:19,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:19,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895669209] [2024-11-17 07:55:19,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:19,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:19,349 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:19,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:19,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895669209] [2024-11-17 07:55:19,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895669209] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:55:19,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330275019] [2024-11-17 07:55:19,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:19,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:55:19,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:55:19,353 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:55:19,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 07:55:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:19,427 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:55:19,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:55:19,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:19,491 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:55:19,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330275019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:55:19,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:55:19,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2024-11-17 07:55:19,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422759589] [2024-11-17 07:55:19,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:55:19,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:55:19,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:19,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:55:19,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:55:19,494 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 74 [2024-11-17 07:55:19,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 269 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:19,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:19,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 74 [2024-11-17 07:55:19,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:55:26,415 INFO L124 PetriNetUnfolderBase]: 60159/96835 cut-off events. [2024-11-17 07:55:26,415 INFO L125 PetriNetUnfolderBase]: For 92382/96691 co-relation queries the response was YES. [2024-11-17 07:55:26,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241895 conditions, 96835 events. 60159/96835 cut-off events. For 92382/96691 co-relation queries the response was YES. Maximal size of possible extension queue 3589. Compared 891518 event pairs, 21688 based on Foata normal form. 2733/86785 useless extension candidates. Maximal degree in co-relation 96416. Up to 44236 conditions per place. [2024-11-17 07:55:27,097 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 86 selfloop transitions, 7 changer transitions 0/115 dead transitions. [2024-11-17 07:55:27,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 115 transitions, 589 flow [2024-11-17 07:55:27,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:55:27,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:55:27,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 181 transitions. [2024-11-17 07:55:27,098 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6114864864864865 [2024-11-17 07:55:27,098 INFO L175 Difference]: Start difference. First operand has 84 places, 75 transitions, 269 flow. Second operand 4 states and 181 transitions. [2024-11-17 07:55:27,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 115 transitions, 589 flow [2024-11-17 07:55:27,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 115 transitions, 577 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:55:27,229 INFO L231 Difference]: Finished difference. Result has 84 places, 77 transitions, 299 flow [2024-11-17 07:55:27,230 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=299, PETRI_PLACES=84, PETRI_TRANSITIONS=77} [2024-11-17 07:55:27,230 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, 11 predicate places. [2024-11-17 07:55:27,230 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 77 transitions, 299 flow [2024-11-17 07:55:27,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:27,231 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:55:27,231 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:55:27,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 07:55:27,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:55:27,431 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-17 07:55:27,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:55:27,432 INFO L85 PathProgramCache]: Analyzing trace with hash -992082997, now seen corresponding path program 1 times [2024-11-17 07:55:27,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:55:27,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639118514] [2024-11-17 07:55:27,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:55:27,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:55:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:55:27,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:55:27,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:55:27,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639118514] [2024-11-17 07:55:27,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639118514] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:55:27,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:55:27,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:55:27,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754534112] [2024-11-17 07:55:27,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:55:27,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:55:27,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:55:27,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:55:27,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:55:27,489 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 74 [2024-11-17 07:55:27,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 77 transitions, 299 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:55:27,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:55:27,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 74 [2024-11-17 07:55:27,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand