./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f 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-simple-array-sum.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 0c7c5c48eda3eba87519854c38b7495ee97c35417d2a6e287791b53fe49d6c07 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:28:00,783 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:28:00,862 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:28:00,866 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:28:00,866 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:28:00,889 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:28:00,890 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:28:00,891 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:28:00,892 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:28:00,893 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:28:00,895 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:28:00,896 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:28:00,896 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:28:00,897 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:28:00,897 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:28:00,897 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:28:00,897 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:28:00,898 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:28:00,898 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:28:00,898 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:28:00,898 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:28:00,901 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:28:00,901 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:28:00,901 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:28:00,901 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:28:00,901 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:28:00,902 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:28:00,902 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:28:00,902 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:28:00,902 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:28:00,903 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:28:00,903 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:28:00,903 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:28:00,903 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:28:00,903 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:28:00,904 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:28:00,904 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:28:00,904 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:28:00,904 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:28:00,904 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:28:00,904 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:28:00,905 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:28:00,905 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:28:00,905 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:28:00,905 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c7c5c48eda3eba87519854c38b7495ee97c35417d2a6e287791b53fe49d6c07 [2024-11-10 22:28:01,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:28:01,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:28:01,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:28:01,168 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:28:01,169 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:28:01,170 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2024-11-10 22:28:02,623 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:28:02,873 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:28:02,874 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2024-11-10 22:28:02,889 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c410ef8f/1395f0ba167a4a6d8d0b03712f33120c/FLAG1ae2fc13e [2024-11-10 22:28:02,908 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c410ef8f/1395f0ba167a4a6d8d0b03712f33120c [2024-11-10 22:28:02,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:28:02,915 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:28:02,917 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:28:02,917 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:28:02,924 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:28:02,925 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:28:02" (1/1) ... [2024-11-10 22:28:02,926 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32ff7a2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:02, skipping insertion in model container [2024-11-10 22:28:02,926 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:28:02" (1/1) ... [2024-11-10 22:28:02,951 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:28:03,181 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:28:03,196 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:28:03,232 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:28:03,255 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:28:03,255 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:03 WrapperNode [2024-11-10 22:28:03,255 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:28:03,257 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:28:03,257 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:28:03,257 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:28:03,265 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:03" (1/1) ... [2024-11-10 22:28:03,273 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:03" (1/1) ... [2024-11-10 22:28:03,300 INFO L138 Inliner]: procedures = 23, calls = 21, calls flagged for inlining = 8, calls inlined = 10, statements flattened = 113 [2024-11-10 22:28:03,303 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:28:03,304 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:28:03,304 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:28:03,304 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:28:03,315 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:03" (1/1) ... [2024-11-10 22:28:03,315 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:03" (1/1) ... [2024-11-10 22:28:03,318 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:03" (1/1) ... [2024-11-10 22:28:03,337 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-10 22:28:03,338 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:03" (1/1) ... [2024-11-10 22:28:03,338 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:03" (1/1) ... [2024-11-10 22:28:03,347 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:03" (1/1) ... [2024-11-10 22:28:03,347 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:03" (1/1) ... [2024-11-10 22:28:03,350 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:03" (1/1) ... [2024-11-10 22:28:03,351 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:03" (1/1) ... [2024-11-10 22:28:03,354 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:28:03,355 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:28:03,355 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:28:03,355 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:28:03,356 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:03" (1/1) ... [2024-11-10 22:28:03,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:28:03,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:03,394 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) [2024-11-10 22:28:03,401 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 [2024-11-10 22:28:03,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:28:03,455 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 22:28:03,455 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 22:28:03,455 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 22:28:03,455 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 22:28:03,455 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 22:28:03,455 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 22:28:03,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:28:03,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 22:28:03,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 22:28:03,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 22:28:03,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 22:28:03,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:28:03,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:28:03,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 22:28:03,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 22:28:03,475 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:28:03,628 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:28:03,631 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:28:04,003 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:28:04,004 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:28:04,193 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:28:04,193 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:28:04,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:28:04 BoogieIcfgContainer [2024-11-10 22:28:04,194 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:28:04,198 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:28:04,198 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:28:04,203 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:28:04,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:28:02" (1/3) ... [2024-11-10 22:28:04,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40375e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:28:04, skipping insertion in model container [2024-11-10 22:28:04,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:28:03" (2/3) ... [2024-11-10 22:28:04,206 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40375e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:28:04, skipping insertion in model container [2024-11-10 22:28:04,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:28:04" (3/3) ... [2024-11-10 22:28:04,208 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2024-11-10 22:28:04,223 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:28:04,223 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-10 22:28:04,223 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:28:04,279 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 22:28:04,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 74 transitions, 169 flow [2024-11-10 22:28:04,351 INFO L124 PetriNetUnfolderBase]: 11/71 cut-off events. [2024-11-10 22:28:04,352 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 22:28:04,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 71 events. 11/71 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 167 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 54. Up to 3 conditions per place. [2024-11-10 22:28:04,356 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 74 transitions, 169 flow [2024-11-10 22:28:04,359 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 69 transitions, 153 flow [2024-11-10 22:28:04,369 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:28:04,377 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;@28545327, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:28:04,378 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-10 22:28:04,382 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:28:04,382 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-10 22:28:04,382 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:28:04,382 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:04,383 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 22:28:04,384 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:28:04,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:04,389 INFO L85 PathProgramCache]: Analyzing trace with hash 14205099, now seen corresponding path program 1 times [2024-11-10 22:28:04,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:04,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8178318] [2024-11-10 22:28:04,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:04,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:04,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:04,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:04,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8178318] [2024-11-10 22:28:04,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8178318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:04,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:28:04,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:28:04,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264420829] [2024-11-10 22:28:04,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:04,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:28:04,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:04,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:28:04,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:28:04,830 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 74 [2024-11-10 22:28:04,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 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) [2024-11-10 22:28:04,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:04,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 74 [2024-11-10 22:28:04,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:05,248 INFO L124 PetriNetUnfolderBase]: 1153/2327 cut-off events. [2024-11-10 22:28:05,249 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2024-11-10 22:28:05,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4044 conditions, 2327 events. 1153/2327 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 15829 event pairs, 880 based on Foata normal form. 235/2244 useless extension candidates. Maximal degree in co-relation 3689. Up to 1594 conditions per place. [2024-11-10 22:28:05,281 INFO L140 encePairwiseOnDemand]: 58/74 looper letters, 35 selfloop transitions, 7 changer transitions 0/70 dead transitions. [2024-11-10 22:28:05,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 70 transitions, 239 flow [2024-11-10 22:28:05,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:28:05,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:28:05,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 177 transitions. [2024-11-10 22:28:05,297 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.597972972972973 [2024-11-10 22:28:05,299 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 153 flow. Second operand 4 states and 177 transitions. [2024-11-10 22:28:05,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 70 transitions, 239 flow [2024-11-10 22:28:05,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 70 transitions, 230 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 22:28:05,313 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 194 flow [2024-11-10 22:28:05,315 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2024-11-10 22:28:05,320 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 1 predicate places. [2024-11-10 22:28:05,321 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 194 flow [2024-11-10 22:28:05,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 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) [2024-11-10 22:28:05,321 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:05,322 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-10 22:28:05,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:28:05,323 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:28:05,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:05,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1888814250, now seen corresponding path program 1 times [2024-11-10 22:28:05,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:05,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513759516] [2024-11-10 22:28:05,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:05,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:05,499 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:05,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:05,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513759516] [2024-11-10 22:28:05,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513759516] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:05,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351720458] [2024-11-10 22:28:05,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:05,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:05,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:05,503 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) [2024-11-10 22:28:05,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 22:28:05,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:05,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:28:05,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:05,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:05,659 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:28:05,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351720458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:05,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:28:05,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-10 22:28:05,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559670377] [2024-11-10 22:28:05,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:05,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:28:05,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:05,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:28:05,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:28:05,697 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 74 [2024-11-10 22:28:05,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 194 flow. Second operand has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 6 states have internal predecessors, (191), 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) [2024-11-10 22:28:05,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:05,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 74 [2024-11-10 22:28:05,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:05,998 INFO L124 PetriNetUnfolderBase]: 1153/2325 cut-off events. [2024-11-10 22:28:05,998 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-11-10 22:28:06,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4014 conditions, 2325 events. 1153/2325 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 15803 event pairs, 880 based on Foata normal form. 2/2009 useless extension candidates. Maximal degree in co-relation 3960. Up to 1584 conditions per place. [2024-11-10 22:28:06,017 INFO L140 encePairwiseOnDemand]: 65/74 looper letters, 28 selfloop transitions, 12 changer transitions 0/68 dead transitions. [2024-11-10 22:28:06,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 68 transitions, 266 flow [2024-11-10 22:28:06,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:28:06,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:28:06,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 228 transitions. [2024-11-10 22:28:06,022 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-11-10 22:28:06,023 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 194 flow. Second operand 6 states and 228 transitions. [2024-11-10 22:28:06,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 68 transitions, 266 flow [2024-11-10 22:28:06,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 68 transitions, 266 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:28:06,027 INFO L231 Difference]: Finished difference. Result has 72 places, 68 transitions, 210 flow [2024-11-10 22:28:06,028 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=210, PETRI_PLACES=72, PETRI_TRANSITIONS=68} [2024-11-10 22:28:06,028 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 4 predicate places. [2024-11-10 22:28:06,029 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 68 transitions, 210 flow [2024-11-10 22:28:06,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 6 states have internal predecessors, (191), 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) [2024-11-10 22:28:06,029 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:06,030 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-10 22:28:06,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 22:28:06,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:06,231 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:28:06,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:06,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1576300016, now seen corresponding path program 1 times [2024-11-10 22:28:06,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:06,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277940100] [2024-11-10 22:28:06,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:06,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:06,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:06,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:06,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:06,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277940100] [2024-11-10 22:28:06,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277940100] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:06,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858911848] [2024-11-10 22:28:06,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:06,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:06,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:06,348 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:28:06,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 22:28:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:06,423 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:28:06,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:06,469 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:06,469 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:06,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:06,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858911848] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:06,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:06,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-10 22:28:06,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308537104] [2024-11-10 22:28:06,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:06,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:28:06,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:06,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:28:06,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:28:06,586 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 74 [2024-11-10 22:28:06,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 68 transitions, 210 flow. Second operand has 12 states, 12 states have (on average 32.083333333333336) internal successors, (385), 12 states have internal predecessors, (385), 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) [2024-11-10 22:28:06,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:06,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 74 [2024-11-10 22:28:06,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:06,924 INFO L124 PetriNetUnfolderBase]: 1159/2361 cut-off events. [2024-11-10 22:28:06,925 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-11-10 22:28:06,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4120 conditions, 2361 events. 1159/2361 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 16194 event pairs, 880 based on Foata normal form. 6/2051 useless extension candidates. Maximal degree in co-relation 3962. Up to 1595 conditions per place. [2024-11-10 22:28:06,943 INFO L140 encePairwiseOnDemand]: 65/74 looper letters, 33 selfloop transitions, 25 changer transitions 0/86 dead transitions. [2024-11-10 22:28:06,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 86 transitions, 440 flow [2024-11-10 22:28:06,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:28:06,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:28:06,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 374 transitions. [2024-11-10 22:28:06,948 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5054054054054054 [2024-11-10 22:28:06,948 INFO L175 Difference]: Start difference. First operand has 72 places, 68 transitions, 210 flow. Second operand 10 states and 374 transitions. [2024-11-10 22:28:06,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 86 transitions, 440 flow [2024-11-10 22:28:06,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 86 transitions, 382 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-10 22:28:06,954 INFO L231 Difference]: Finished difference. Result has 79 places, 86 transitions, 350 flow [2024-11-10 22:28:06,954 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=350, PETRI_PLACES=79, PETRI_TRANSITIONS=86} [2024-11-10 22:28:06,955 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 11 predicate places. [2024-11-10 22:28:06,955 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 86 transitions, 350 flow [2024-11-10 22:28:06,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 32.083333333333336) internal successors, (385), 12 states have internal predecessors, (385), 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) [2024-11-10 22:28:06,956 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:06,956 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:06,974 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 22:28:07,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-10 22:28:07,161 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:28:07,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:07,162 INFO L85 PathProgramCache]: Analyzing trace with hash -882723301, now seen corresponding path program 1 times [2024-11-10 22:28:07,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:07,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635440684] [2024-11-10 22:28:07,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:07,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:07,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:07,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:07,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635440684] [2024-11-10 22:28:07,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635440684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:07,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:28:07,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:28:07,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862497439] [2024-11-10 22:28:07,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:07,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:28:07,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:07,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:28:07,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:28:07,294 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 74 [2024-11-10 22:28:07,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 86 transitions, 350 flow. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2024-11-10 22:28:07,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:07,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 74 [2024-11-10 22:28:07,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:07,744 INFO L124 PetriNetUnfolderBase]: 2267/4229 cut-off events. [2024-11-10 22:28:07,744 INFO L125 PetriNetUnfolderBase]: For 191/191 co-relation queries the response was YES. [2024-11-10 22:28:07,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7610 conditions, 4229 events. 2267/4229 cut-off events. For 191/191 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 29331 event pairs, 1240 based on Foata normal form. 86/3805 useless extension candidates. Maximal degree in co-relation 7539. Up to 2283 conditions per place. [2024-11-10 22:28:07,773 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 92 selfloop transitions, 4 changer transitions 0/124 dead transitions. [2024-11-10 22:28:07,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 124 transitions, 624 flow [2024-11-10 22:28:07,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:28:07,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:28:07,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 206 transitions. [2024-11-10 22:28:07,775 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6959459459459459 [2024-11-10 22:28:07,775 INFO L175 Difference]: Start difference. First operand has 79 places, 86 transitions, 350 flow. Second operand 4 states and 206 transitions. [2024-11-10 22:28:07,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 124 transitions, 624 flow [2024-11-10 22:28:07,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 124 transitions, 600 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-10 22:28:07,782 INFO L231 Difference]: Finished difference. Result has 82 places, 89 transitions, 355 flow [2024-11-10 22:28:07,783 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=355, PETRI_PLACES=82, PETRI_TRANSITIONS=89} [2024-11-10 22:28:07,783 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 14 predicate places. [2024-11-10 22:28:07,784 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 89 transitions, 355 flow [2024-11-10 22:28:07,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2024-11-10 22:28:07,784 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:07,785 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:07,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 22:28:07,785 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:28:07,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:07,786 INFO L85 PathProgramCache]: Analyzing trace with hash -235762647, now seen corresponding path program 1 times [2024-11-10 22:28:07,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:07,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690143946] [2024-11-10 22:28:07,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:07,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:07,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:07,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:07,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690143946] [2024-11-10 22:28:07,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690143946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:07,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:28:07,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:28:07,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492610794] [2024-11-10 22:28:07,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:07,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:28:07,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:07,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:28:07,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:28:07,857 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 74 [2024-11-10 22:28:07,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 89 transitions, 355 flow. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2024-11-10 22:28:07,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:07,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 74 [2024-11-10 22:28:07,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:08,581 INFO L124 PetriNetUnfolderBase]: 4381/7611 cut-off events. [2024-11-10 22:28:08,582 INFO L125 PetriNetUnfolderBase]: For 2366/2622 co-relation queries the response was YES. [2024-11-10 22:28:08,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16026 conditions, 7611 events. 4381/7611 cut-off events. For 2366/2622 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 51905 event pairs, 2041 based on Foata normal form. 118/7096 useless extension candidates. Maximal degree in co-relation 15955. Up to 3941 conditions per place. [2024-11-10 22:28:08,688 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 100 selfloop transitions, 4 changer transitions 0/131 dead transitions. [2024-11-10 22:28:08,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 131 transitions, 691 flow [2024-11-10 22:28:08,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:28:08,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:28:08,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 201 transitions. [2024-11-10 22:28:08,690 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6790540540540541 [2024-11-10 22:28:08,690 INFO L175 Difference]: Start difference. First operand has 82 places, 89 transitions, 355 flow. Second operand 4 states and 201 transitions. [2024-11-10 22:28:08,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 131 transitions, 691 flow [2024-11-10 22:28:08,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 131 transitions, 682 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:28:08,695 INFO L231 Difference]: Finished difference. Result has 86 places, 92 transitions, 381 flow [2024-11-10 22:28:08,695 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=381, PETRI_PLACES=86, PETRI_TRANSITIONS=92} [2024-11-10 22:28:08,696 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 18 predicate places. [2024-11-10 22:28:08,696 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 92 transitions, 381 flow [2024-11-10 22:28:08,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2024-11-10 22:28:08,697 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:08,697 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:08,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 22:28:08,697 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:28:08,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:08,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1675122484, now seen corresponding path program 1 times [2024-11-10 22:28:08,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:08,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925035549] [2024-11-10 22:28:08,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:08,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:08,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:08,808 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:28:08,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:08,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925035549] [2024-11-10 22:28:08,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925035549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:08,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:28:08,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:28:08,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606970378] [2024-11-10 22:28:08,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:08,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:28:08,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:08,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:28:08,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:28:08,836 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 74 [2024-11-10 22:28:08,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 92 transitions, 381 flow. Second operand has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 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) [2024-11-10 22:28:08,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:08,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 74 [2024-11-10 22:28:08,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:09,804 INFO L124 PetriNetUnfolderBase]: 4991/10097 cut-off events. [2024-11-10 22:28:09,804 INFO L125 PetriNetUnfolderBase]: For 3206/3242 co-relation queries the response was YES. [2024-11-10 22:28:09,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20942 conditions, 10097 events. 4991/10097 cut-off events. For 3206/3242 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 82071 event pairs, 3632 based on Foata normal form. 170/9399 useless extension candidates. Maximal degree in co-relation 20867. Up to 5352 conditions per place. [2024-11-10 22:28:09,865 INFO L140 encePairwiseOnDemand]: 63/74 looper letters, 98 selfloop transitions, 12 changer transitions 0/138 dead transitions. [2024-11-10 22:28:09,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 138 transitions, 732 flow [2024-11-10 22:28:09,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:28:09,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:28:09,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 277 transitions. [2024-11-10 22:28:09,866 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6238738738738738 [2024-11-10 22:28:09,867 INFO L175 Difference]: Start difference. First operand has 86 places, 92 transitions, 381 flow. Second operand 6 states and 277 transitions. [2024-11-10 22:28:09,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 138 transitions, 732 flow [2024-11-10 22:28:09,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 138 transitions, 723 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:28:09,875 INFO L231 Difference]: Finished difference. Result has 94 places, 96 transitions, 443 flow [2024-11-10 22:28:09,876 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=443, PETRI_PLACES=94, PETRI_TRANSITIONS=96} [2024-11-10 22:28:09,877 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 26 predicate places. [2024-11-10 22:28:09,877 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 96 transitions, 443 flow [2024-11-10 22:28:09,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 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) [2024-11-10 22:28:09,878 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:09,878 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:09,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 22:28:09,878 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:28:09,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:09,878 INFO L85 PathProgramCache]: Analyzing trace with hash 148160343, now seen corresponding path program 1 times [2024-11-10 22:28:09,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:09,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114147943] [2024-11-10 22:28:09,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:09,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:09,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:09,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:09,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114147943] [2024-11-10 22:28:09,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114147943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:09,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:28:09,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:28:09,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887967845] [2024-11-10 22:28:09,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:09,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:28:09,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:09,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:28:09,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:28:09,948 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 74 [2024-11-10 22:28:09,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 96 transitions, 443 flow. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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) [2024-11-10 22:28:09,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:09,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 74 [2024-11-10 22:28:09,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:10,799 INFO L124 PetriNetUnfolderBase]: 3900/7838 cut-off events. [2024-11-10 22:28:10,800 INFO L125 PetriNetUnfolderBase]: For 4498/4908 co-relation queries the response was YES. [2024-11-10 22:28:10,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17326 conditions, 7838 events. 3900/7838 cut-off events. For 4498/4908 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 60717 event pairs, 817 based on Foata normal form. 218/7645 useless extension candidates. Maximal degree in co-relation 17246. Up to 4005 conditions per place. [2024-11-10 22:28:10,870 INFO L140 encePairwiseOnDemand]: 70/74 looper letters, 96 selfloop transitions, 4 changer transitions 2/134 dead transitions. [2024-11-10 22:28:10,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 134 transitions, 797 flow [2024-11-10 22:28:10,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:28:10,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:28:10,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 199 transitions. [2024-11-10 22:28:10,872 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6722972972972973 [2024-11-10 22:28:10,872 INFO L175 Difference]: Start difference. First operand has 94 places, 96 transitions, 443 flow. Second operand 4 states and 199 transitions. [2024-11-10 22:28:10,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 134 transitions, 797 flow [2024-11-10 22:28:10,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 134 transitions, 790 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:28:10,880 INFO L231 Difference]: Finished difference. Result has 98 places, 99 transitions, 461 flow [2024-11-10 22:28:10,880 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=461, PETRI_PLACES=98, PETRI_TRANSITIONS=99} [2024-11-10 22:28:10,881 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 30 predicate places. [2024-11-10 22:28:10,882 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 99 transitions, 461 flow [2024-11-10 22:28:10,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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) [2024-11-10 22:28:10,883 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:10,883 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-10 22:28:10,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 22:28:10,883 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:28:10,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:10,884 INFO L85 PathProgramCache]: Analyzing trace with hash -895470925, now seen corresponding path program 2 times [2024-11-10 22:28:10,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:10,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897338940] [2024-11-10 22:28:10,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:10,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:11,060 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:11,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:11,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897338940] [2024-11-10 22:28:11,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897338940] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:11,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705453226] [2024-11-10 22:28:11,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:28:11,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:11,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:11,065 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) [2024-11-10 22:28:11,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 22:28:11,130 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:28:11,131 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:28:11,132 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:28:11,133 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:11,197 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:28:11,197 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:11,237 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:28:11,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705453226] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:11,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:11,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-10 22:28:11,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702194386] [2024-11-10 22:28:11,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:11,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 22:28:11,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:11,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 22:28:11,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-10 22:28:11,275 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 74 [2024-11-10 22:28:11,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 99 transitions, 461 flow. Second operand has 14 states, 14 states have (on average 30.142857142857142) internal successors, (422), 14 states have internal predecessors, (422), 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) [2024-11-10 22:28:11,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:11,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 74 [2024-11-10 22:28:11,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:12,260 INFO L124 PetriNetUnfolderBase]: 3456/6923 cut-off events. [2024-11-10 22:28:12,260 INFO L125 PetriNetUnfolderBase]: For 4569/4970 co-relation queries the response was YES. [2024-11-10 22:28:12,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16324 conditions, 6923 events. 3456/6923 cut-off events. For 4569/4970 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 52626 event pairs, 2703 based on Foata normal form. 126/6737 useless extension candidates. Maximal degree in co-relation 16208. Up to 4931 conditions per place. [2024-11-10 22:28:12,306 INFO L140 encePairwiseOnDemand]: 64/74 looper letters, 46 selfloop transitions, 40 changer transitions 0/113 dead transitions. [2024-11-10 22:28:12,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 113 transitions, 700 flow [2024-11-10 22:28:12,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-10 22:28:12,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-10 22:28:12,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 774 transitions. [2024-11-10 22:28:12,312 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4358108108108108 [2024-11-10 22:28:12,312 INFO L175 Difference]: Start difference. First operand has 98 places, 99 transitions, 461 flow. Second operand 24 states and 774 transitions. [2024-11-10 22:28:12,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 113 transitions, 700 flow [2024-11-10 22:28:12,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 113 transitions, 700 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:28:12,334 INFO L231 Difference]: Finished difference. Result has 123 places, 109 transitions, 612 flow [2024-11-10 22:28:12,334 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=612, PETRI_PLACES=123, PETRI_TRANSITIONS=109} [2024-11-10 22:28:12,335 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 55 predicate places. [2024-11-10 22:28:12,335 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 109 transitions, 612 flow [2024-11-10 22:28:12,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 30.142857142857142) internal successors, (422), 14 states have internal predecessors, (422), 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) [2024-11-10 22:28:12,336 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:12,336 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:12,356 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 22:28:12,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:12,538 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:28:12,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:12,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1734270349, now seen corresponding path program 1 times [2024-11-10 22:28:12,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:12,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371498121] [2024-11-10 22:28:12,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:12,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:12,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:12,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:12,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371498121] [2024-11-10 22:28:12,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371498121] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:12,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:28:12,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 22:28:12,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080823334] [2024-11-10 22:28:12,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:12,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:28:12,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:12,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:28:12,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:28:12,666 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 74 [2024-11-10 22:28:12,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 109 transitions, 612 flow. Second operand has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 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) [2024-11-10 22:28:12,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:12,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 74 [2024-11-10 22:28:12,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:13,555 INFO L124 PetriNetUnfolderBase]: 5048/10415 cut-off events. [2024-11-10 22:28:13,556 INFO L125 PetriNetUnfolderBase]: For 7032/7538 co-relation queries the response was YES. [2024-11-10 22:28:13,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24171 conditions, 10415 events. 5048/10415 cut-off events. For 7032/7538 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 87654 event pairs, 1699 based on Foata normal form. 386/10300 useless extension candidates. Maximal degree in co-relation 24109. Up to 4275 conditions per place. [2024-11-10 22:28:13,646 INFO L140 encePairwiseOnDemand]: 67/74 looper letters, 141 selfloop transitions, 11 changer transitions 0/188 dead transitions. [2024-11-10 22:28:13,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 188 transitions, 1232 flow [2024-11-10 22:28:13,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:28:13,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:28:13,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 300 transitions. [2024-11-10 22:28:13,648 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6756756756756757 [2024-11-10 22:28:13,648 INFO L175 Difference]: Start difference. First operand has 123 places, 109 transitions, 612 flow. Second operand 6 states and 300 transitions. [2024-11-10 22:28:13,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 188 transitions, 1232 flow [2024-11-10 22:28:13,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 188 transitions, 1148 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-11-10 22:28:13,672 INFO L231 Difference]: Finished difference. Result has 123 places, 117 transitions, 613 flow [2024-11-10 22:28:13,672 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=613, PETRI_PLACES=123, PETRI_TRANSITIONS=117} [2024-11-10 22:28:13,673 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 55 predicate places. [2024-11-10 22:28:13,673 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 117 transitions, 613 flow [2024-11-10 22:28:13,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 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) [2024-11-10 22:28:13,674 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:13,674 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:13,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 22:28:13,674 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:28:13,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:13,674 INFO L85 PathProgramCache]: Analyzing trace with hash -259145485, now seen corresponding path program 2 times [2024-11-10 22:28:13,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:13,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467519201] [2024-11-10 22:28:13,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:13,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:13,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:13,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:13,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:13,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467519201] [2024-11-10 22:28:13,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467519201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:13,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:28:13,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 22:28:13,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317444739] [2024-11-10 22:28:13,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:13,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:28:13,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:13,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:28:13,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:28:13,806 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 74 [2024-11-10 22:28:13,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 117 transitions, 613 flow. Second operand has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 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) [2024-11-10 22:28:13,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:13,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 74 [2024-11-10 22:28:13,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:15,255 INFO L124 PetriNetUnfolderBase]: 7408/14465 cut-off events. [2024-11-10 22:28:15,255 INFO L125 PetriNetUnfolderBase]: For 15668/17066 co-relation queries the response was YES. [2024-11-10 22:28:15,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36096 conditions, 14465 events. 7408/14465 cut-off events. For 15668/17066 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 120992 event pairs, 2757 based on Foata normal form. 480/13969 useless extension candidates. Maximal degree in co-relation 36033. Up to 4621 conditions per place. [2024-11-10 22:28:15,362 INFO L140 encePairwiseOnDemand]: 67/74 looper letters, 143 selfloop transitions, 11 changer transitions 0/190 dead transitions. [2024-11-10 22:28:15,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 190 transitions, 1238 flow [2024-11-10 22:28:15,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:28:15,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:28:15,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 293 transitions. [2024-11-10 22:28:15,364 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6599099099099099 [2024-11-10 22:28:15,365 INFO L175 Difference]: Start difference. First operand has 123 places, 117 transitions, 613 flow. Second operand 6 states and 293 transitions. [2024-11-10 22:28:15,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 190 transitions, 1238 flow [2024-11-10 22:28:15,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 190 transitions, 1227 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-10 22:28:15,399 INFO L231 Difference]: Finished difference. Result has 131 places, 122 transitions, 685 flow [2024-11-10 22:28:15,399 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=685, PETRI_PLACES=131, PETRI_TRANSITIONS=122} [2024-11-10 22:28:15,400 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 63 predicate places. [2024-11-10 22:28:15,400 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 122 transitions, 685 flow [2024-11-10 22:28:15,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 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) [2024-11-10 22:28:15,400 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:15,401 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:15,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 22:28:15,401 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:28:15,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:15,401 INFO L85 PathProgramCache]: Analyzing trace with hash -622884475, now seen corresponding path program 3 times [2024-11-10 22:28:15,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:15,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770268779] [2024-11-10 22:28:15,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:15,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:15,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:15,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:15,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:15,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770268779] [2024-11-10 22:28:15,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770268779] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:15,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:28:15,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 22:28:15,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651288178] [2024-11-10 22:28:15,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:15,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:28:15,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:15,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:28:15,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:28:15,486 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 74 [2024-11-10 22:28:15,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 122 transitions, 685 flow. Second operand has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 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) [2024-11-10 22:28:15,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:15,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 74 [2024-11-10 22:28:15,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:17,014 INFO L124 PetriNetUnfolderBase]: 7634/14713 cut-off events. [2024-11-10 22:28:17,015 INFO L125 PetriNetUnfolderBase]: For 25180/26516 co-relation queries the response was YES. [2024-11-10 22:28:17,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38324 conditions, 14713 events. 7634/14713 cut-off events. For 25180/26516 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 117320 event pairs, 1650 based on Foata normal form. 290/14161 useless extension candidates. Maximal degree in co-relation 38257. Up to 5968 conditions per place. [2024-11-10 22:28:17,112 INFO L140 encePairwiseOnDemand]: 67/74 looper letters, 136 selfloop transitions, 18 changer transitions 0/190 dead transitions. [2024-11-10 22:28:17,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 190 transitions, 1283 flow [2024-11-10 22:28:17,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:28:17,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:28:17,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 296 transitions. [2024-11-10 22:28:17,114 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-10 22:28:17,114 INFO L175 Difference]: Start difference. First operand has 131 places, 122 transitions, 685 flow. Second operand 6 states and 296 transitions. [2024-11-10 22:28:17,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 190 transitions, 1283 flow [2024-11-10 22:28:17,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 190 transitions, 1262 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-10 22:28:17,157 INFO L231 Difference]: Finished difference. Result has 137 places, 124 transitions, 750 flow [2024-11-10 22:28:17,157 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=750, PETRI_PLACES=137, PETRI_TRANSITIONS=124} [2024-11-10 22:28:17,158 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 69 predicate places. [2024-11-10 22:28:17,159 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 124 transitions, 750 flow [2024-11-10 22:28:17,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 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) [2024-11-10 22:28:17,159 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:17,163 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:17,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 22:28:17,164 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:28:17,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:17,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1504573388, now seen corresponding path program 1 times [2024-11-10 22:28:17,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:17,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36358679] [2024-11-10 22:28:17,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:17,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:17,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:17,256 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:28:17,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:17,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36358679] [2024-11-10 22:28:17,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36358679] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:17,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029342488] [2024-11-10 22:28:17,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:17,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:17,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:17,259 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) [2024-11-10 22:28:17,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 22:28:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:17,341 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 22:28:17,342 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:17,519 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:28:17,519 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:17,678 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:28:17,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029342488] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:17,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:17,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-10 22:28:17,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091578731] [2024-11-10 22:28:17,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:17,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 22:28:17,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:17,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 22:28:17,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-10 22:28:18,000 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 74 [2024-11-10 22:28:18,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 124 transitions, 750 flow. Second operand has 19 states, 19 states have (on average 27.526315789473685) internal successors, (523), 19 states have internal predecessors, (523), 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) [2024-11-10 22:28:18,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:18,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 74 [2024-11-10 22:28:18,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:21,603 INFO L124 PetriNetUnfolderBase]: 16123/28438 cut-off events. [2024-11-10 22:28:21,603 INFO L125 PetriNetUnfolderBase]: For 52028/53523 co-relation queries the response was YES. [2024-11-10 22:28:21,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77733 conditions, 28438 events. 16123/28438 cut-off events. For 52028/53523 co-relation queries the response was YES. Maximal size of possible extension queue 599. Compared 229261 event pairs, 3523 based on Foata normal form. 776/27799 useless extension candidates. Maximal degree in co-relation 77634. Up to 3936 conditions per place. [2024-11-10 22:28:21,895 INFO L140 encePairwiseOnDemand]: 58/74 looper letters, 455 selfloop transitions, 53 changer transitions 0/531 dead transitions. [2024-11-10 22:28:21,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 531 transitions, 4752 flow [2024-11-10 22:28:21,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-10 22:28:21,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-10 22:28:21,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 729 transitions. [2024-11-10 22:28:21,898 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5184921763869133 [2024-11-10 22:28:21,899 INFO L175 Difference]: Start difference. First operand has 137 places, 124 transitions, 750 flow. Second operand 19 states and 729 transitions. [2024-11-10 22:28:21,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 531 transitions, 4752 flow [2024-11-10 22:28:22,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 531 transitions, 4343 flow, removed 89 selfloop flow, removed 4 redundant places. [2024-11-10 22:28:22,013 INFO L231 Difference]: Finished difference. Result has 155 places, 144 transitions, 1024 flow [2024-11-10 22:28:22,014 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1024, PETRI_PLACES=155, PETRI_TRANSITIONS=144} [2024-11-10 22:28:22,015 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 87 predicate places. [2024-11-10 22:28:22,016 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 144 transitions, 1024 flow [2024-11-10 22:28:22,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 27.526315789473685) internal successors, (523), 19 states have internal predecessors, (523), 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) [2024-11-10 22:28:22,017 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:22,017 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:22,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-10 22:28:22,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:22,218 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:28:22,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:22,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1103386030, now seen corresponding path program 1 times [2024-11-10 22:28:22,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:22,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114556182] [2024-11-10 22:28:22,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:22,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:22,336 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 22:28:22,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:22,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114556182] [2024-11-10 22:28:22,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114556182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:28:22,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:28:22,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:28:22,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057981097] [2024-11-10 22:28:22,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:28:22,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:28:22,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:22,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:28:22,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:28:22,372 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 74 [2024-11-10 22:28:22,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 144 transitions, 1024 flow. Second operand has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 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) [2024-11-10 22:28:22,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:22,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 74 [2024-11-10 22:28:22,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:24,858 INFO L124 PetriNetUnfolderBase]: 11289/21444 cut-off events. [2024-11-10 22:28:24,858 INFO L125 PetriNetUnfolderBase]: For 38179/39816 co-relation queries the response was YES. [2024-11-10 22:28:25,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60038 conditions, 21444 events. 11289/21444 cut-off events. For 38179/39816 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 177547 event pairs, 8677 based on Foata normal form. 161/20759 useless extension candidates. Maximal degree in co-relation 59920. Up to 15595 conditions per place. [2024-11-10 22:28:25,090 INFO L140 encePairwiseOnDemand]: 64/74 looper letters, 98 selfloop transitions, 9 changer transitions 31/167 dead transitions. [2024-11-10 22:28:25,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 167 transitions, 1427 flow [2024-11-10 22:28:25,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:28:25,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:28:25,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 259 transitions. [2024-11-10 22:28:25,092 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-10 22:28:25,092 INFO L175 Difference]: Start difference. First operand has 155 places, 144 transitions, 1024 flow. Second operand 6 states and 259 transitions. [2024-11-10 22:28:25,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 167 transitions, 1427 flow [2024-11-10 22:28:25,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 167 transitions, 1389 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-11-10 22:28:25,188 INFO L231 Difference]: Finished difference. Result has 158 places, 136 transitions, 953 flow [2024-11-10 22:28:25,189 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=990, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=953, PETRI_PLACES=158, PETRI_TRANSITIONS=136} [2024-11-10 22:28:25,189 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 90 predicate places. [2024-11-10 22:28:25,189 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 136 transitions, 953 flow [2024-11-10 22:28:25,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 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) [2024-11-10 22:28:25,190 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:25,190 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:25,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-10 22:28:25,190 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:28:25,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:25,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1684144982, now seen corresponding path program 1 times [2024-11-10 22:28:25,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:25,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049700155] [2024-11-10 22:28:25,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:25,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:25,385 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:28:25,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:25,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049700155] [2024-11-10 22:28:25,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049700155] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:25,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207169383] [2024-11-10 22:28:25,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:25,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:25,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:25,388 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) [2024-11-10 22:28:25,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 22:28:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:25,476 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 22:28:25,478 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:25,593 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:28:25,597 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:25,723 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:28:25,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207169383] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:25,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:25,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-10 22:28:25,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037307550] [2024-11-10 22:28:25,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:25,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-10 22:28:25,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:25,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-10 22:28:25,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2024-11-10 22:28:25,936 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 74 [2024-11-10 22:28:25,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 136 transitions, 953 flow. Second operand has 22 states, 22 states have (on average 30.363636363636363) internal successors, (668), 22 states have internal predecessors, (668), 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) [2024-11-10 22:28:25,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:25,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 74 [2024-11-10 22:28:25,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:28,121 INFO L124 PetriNetUnfolderBase]: 9858/19445 cut-off events. [2024-11-10 22:28:28,122 INFO L125 PetriNetUnfolderBase]: For 27316/28951 co-relation queries the response was YES. [2024-11-10 22:28:28,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50278 conditions, 19445 events. 9858/19445 cut-off events. For 27316/28951 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 166959 event pairs, 7722 based on Foata normal form. 38/18369 useless extension candidates. Maximal degree in co-relation 50195. Up to 8364 conditions per place. [2024-11-10 22:28:28,743 INFO L140 encePairwiseOnDemand]: 65/74 looper letters, 95 selfloop transitions, 45 changer transitions 1/170 dead transitions. [2024-11-10 22:28:28,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 170 transitions, 1421 flow [2024-11-10 22:28:28,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 22:28:28,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-10 22:28:28,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 454 transitions. [2024-11-10 22:28:28,745 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47193347193347196 [2024-11-10 22:28:28,745 INFO L175 Difference]: Start difference. First operand has 158 places, 136 transitions, 953 flow. Second operand 13 states and 454 transitions. [2024-11-10 22:28:28,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 170 transitions, 1421 flow [2024-11-10 22:28:28,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 170 transitions, 1294 flow, removed 16 selfloop flow, removed 12 redundant places. [2024-11-10 22:28:28,829 INFO L231 Difference]: Finished difference. Result has 152 places, 128 transitions, 848 flow [2024-11-10 22:28:28,830 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=848, PETRI_PLACES=152, PETRI_TRANSITIONS=128} [2024-11-10 22:28:28,831 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 84 predicate places. [2024-11-10 22:28:28,831 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 128 transitions, 848 flow [2024-11-10 22:28:28,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 30.363636363636363) internal successors, (668), 22 states have internal predecessors, (668), 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) [2024-11-10 22:28:28,832 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:28,833 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 3, 2, 2, 2, 1, 1, 1, 1] [2024-11-10 22:28:28,849 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 22:28:29,037 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,SelfDestructingSolverStorable13 [2024-11-10 22:28:29,038 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:28:29,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:29,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1757174825, now seen corresponding path program 2 times [2024-11-10 22:28:29,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:29,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115878258] [2024-11-10 22:28:29,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:29,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:29,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:29,365 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 42 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:29,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:29,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115878258] [2024-11-10 22:28:29,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115878258] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:29,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487893692] [2024-11-10 22:28:29,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:28:29,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:29,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:29,368 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) [2024-11-10 22:28:29,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 22:28:29,435 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:28:29,436 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:28:29,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:28:29,438 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:29,517 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-10 22:28:29,517 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:29,577 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-10 22:28:29,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487893692] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:29,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:29,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 3, 3] total 21 [2024-11-10 22:28:29,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919225039] [2024-11-10 22:28:29,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:29,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-10 22:28:29,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:29,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-10 22:28:29,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2024-11-10 22:28:29,809 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 74 [2024-11-10 22:28:29,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 128 transitions, 848 flow. Second operand has 22 states, 22 states have (on average 30.272727272727273) internal successors, (666), 22 states have internal predecessors, (666), 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) [2024-11-10 22:28:29,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:29,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 74 [2024-11-10 22:28:29,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:33,177 INFO L124 PetriNetUnfolderBase]: 15843/31084 cut-off events. [2024-11-10 22:28:33,177 INFO L125 PetriNetUnfolderBase]: For 37285/39034 co-relation queries the response was YES. [2024-11-10 22:28:33,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78091 conditions, 31084 events. 15843/31084 cut-off events. For 37285/39034 co-relation queries the response was YES. Maximal size of possible extension queue 758. Compared 284625 event pairs, 12516 based on Foata normal form. 169/29215 useless extension candidates. Maximal degree in co-relation 78022. Up to 13882 conditions per place. [2024-11-10 22:28:33,526 INFO L140 encePairwiseOnDemand]: 64/74 looper letters, 102 selfloop transitions, 51 changer transitions 0/182 dead transitions. [2024-11-10 22:28:33,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 182 transitions, 1487 flow [2024-11-10 22:28:33,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-10 22:28:33,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-10 22:28:33,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 699 transitions. [2024-11-10 22:28:33,528 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4498069498069498 [2024-11-10 22:28:33,528 INFO L175 Difference]: Start difference. First operand has 152 places, 128 transitions, 848 flow. Second operand 21 states and 699 transitions. [2024-11-10 22:28:33,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 182 transitions, 1487 flow [2024-11-10 22:28:33,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 182 transitions, 1389 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-11-10 22:28:33,628 INFO L231 Difference]: Finished difference. Result has 159 places, 134 transitions, 911 flow [2024-11-10 22:28:33,628 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=911, PETRI_PLACES=159, PETRI_TRANSITIONS=134} [2024-11-10 22:28:33,629 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 91 predicate places. [2024-11-10 22:28:33,629 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 134 transitions, 911 flow [2024-11-10 22:28:33,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 30.272727272727273) internal successors, (666), 22 states have internal predecessors, (666), 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) [2024-11-10 22:28:33,629 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:33,629 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:33,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-10 22:28:33,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-10 22:28:33,830 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:28:33,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:33,831 INFO L85 PathProgramCache]: Analyzing trace with hash -585944342, now seen corresponding path program 1 times [2024-11-10 22:28:33,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:33,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542220694] [2024-11-10 22:28:33,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:33,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:33,932 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:28:33,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:33,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542220694] [2024-11-10 22:28:33,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542220694] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:33,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542401873] [2024-11-10 22:28:33,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:33,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:33,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:33,935 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) [2024-11-10 22:28:33,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 22:28:34,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:34,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 22:28:34,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:34,192 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:28:34,192 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:34,334 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:28:34,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542401873] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:34,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:34,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-11-10 22:28:34,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9854718] [2024-11-10 22:28:34,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:34,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 22:28:34,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:34,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 22:28:34,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-10 22:28:34,792 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 74 [2024-11-10 22:28:34,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 134 transitions, 911 flow. Second operand has 19 states, 19 states have (on average 27.263157894736842) internal successors, (518), 19 states have internal predecessors, (518), 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) [2024-11-10 22:28:34,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:34,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 74 [2024-11-10 22:28:34,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:38,479 INFO L124 PetriNetUnfolderBase]: 21341/37570 cut-off events. [2024-11-10 22:28:38,479 INFO L125 PetriNetUnfolderBase]: For 42068/42958 co-relation queries the response was YES. [2024-11-10 22:28:38,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95695 conditions, 37570 events. 21341/37570 cut-off events. For 42068/42958 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 315698 event pairs, 3410 based on Foata normal form. 476/35160 useless extension candidates. Maximal degree in co-relation 95626. Up to 12342 conditions per place. [2024-11-10 22:28:38,872 INFO L140 encePairwiseOnDemand]: 58/74 looper letters, 171 selfloop transitions, 45 changer transitions 76/313 dead transitions. [2024-11-10 22:28:38,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 313 transitions, 2245 flow [2024-11-10 22:28:38,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-10 22:28:38,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-10 22:28:38,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 655 transitions. [2024-11-10 22:28:38,875 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46586059743954483 [2024-11-10 22:28:38,875 INFO L175 Difference]: Start difference. First operand has 159 places, 134 transitions, 911 flow. Second operand 19 states and 655 transitions. [2024-11-10 22:28:38,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 313 transitions, 2245 flow [2024-11-10 22:28:39,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 313 transitions, 2122 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-11-10 22:28:39,014 INFO L231 Difference]: Finished difference. Result has 166 places, 119 transitions, 789 flow [2024-11-10 22:28:39,014 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=784, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=789, PETRI_PLACES=166, PETRI_TRANSITIONS=119} [2024-11-10 22:28:39,014 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 98 predicate places. [2024-11-10 22:28:39,014 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 119 transitions, 789 flow [2024-11-10 22:28:39,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 27.263157894736842) internal successors, (518), 19 states have internal predecessors, (518), 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) [2024-11-10 22:28:39,015 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:39,015 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:39,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 22:28:39,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:39,216 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:28:39,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:39,216 INFO L85 PathProgramCache]: Analyzing trace with hash 670896320, now seen corresponding path program 1 times [2024-11-10 22:28:39,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:39,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226796927] [2024-11-10 22:28:39,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:39,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:39,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:39,309 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-10 22:28:39,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:39,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226796927] [2024-11-10 22:28:39,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226796927] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:39,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345140353] [2024-11-10 22:28:39,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:39,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:39,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:39,314 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) [2024-11-10 22:28:39,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 22:28:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:39,405 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:28:39,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:39,438 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-10 22:28:39,438 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:39,482 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-10 22:28:39,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345140353] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:39,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:39,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-10 22:28:39,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849113890] [2024-11-10 22:28:39,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:39,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:28:39,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:39,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:28:39,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:28:39,518 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 74 [2024-11-10 22:28:39,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 119 transitions, 789 flow. Second operand has 12 states, 12 states have (on average 35.166666666666664) internal successors, (422), 12 states have internal predecessors, (422), 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) [2024-11-10 22:28:39,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:39,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 74 [2024-11-10 22:28:39,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:44,763 INFO L124 PetriNetUnfolderBase]: 26163/49361 cut-off events. [2024-11-10 22:28:44,763 INFO L125 PetriNetUnfolderBase]: For 67722/68926 co-relation queries the response was YES. [2024-11-10 22:28:45,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131015 conditions, 49361 events. 26163/49361 cut-off events. For 67722/68926 co-relation queries the response was YES. Maximal size of possible extension queue 1019. Compared 459220 event pairs, 5700 based on Foata normal form. 1646/49633 useless extension candidates. Maximal degree in co-relation 130950. Up to 15298 conditions per place. [2024-11-10 22:28:45,365 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 382 selfloop transitions, 13 changer transitions 0/428 dead transitions. [2024-11-10 22:28:45,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 428 transitions, 3717 flow [2024-11-10 22:28:45,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:28:45,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:28:45,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 518 transitions. [2024-11-10 22:28:45,692 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-11-10 22:28:45,692 INFO L175 Difference]: Start difference. First operand has 166 places, 119 transitions, 789 flow. Second operand 10 states and 518 transitions. [2024-11-10 22:28:45,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 428 transitions, 3717 flow [2024-11-10 22:28:45,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 428 transitions, 3382 flow, removed 12 selfloop flow, removed 15 redundant places. [2024-11-10 22:28:45,826 INFO L231 Difference]: Finished difference. Result has 149 places, 128 transitions, 724 flow [2024-11-10 22:28:45,826 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=724, PETRI_PLACES=149, PETRI_TRANSITIONS=128} [2024-11-10 22:28:45,826 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 81 predicate places. [2024-11-10 22:28:45,827 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 128 transitions, 724 flow [2024-11-10 22:28:45,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 35.166666666666664) internal successors, (422), 12 states have internal predecessors, (422), 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) [2024-11-10 22:28:45,827 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:45,827 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:45,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-10 22:28:46,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-10 22:28:46,028 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:28:46,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:46,028 INFO L85 PathProgramCache]: Analyzing trace with hash 447697265, now seen corresponding path program 1 times [2024-11-10 22:28:46,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:46,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414672300] [2024-11-10 22:28:46,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:46,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:46,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:46,122 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-10 22:28:46,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:46,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414672300] [2024-11-10 22:28:46,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414672300] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:46,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300432462] [2024-11-10 22:28:46,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:46,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:46,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:46,129 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:28:46,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 22:28:46,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:46,213 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:28:46,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:46,241 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-10 22:28:46,241 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:46,275 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-10 22:28:46,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300432462] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:46,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:46,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-10 22:28:46,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758436395] [2024-11-10 22:28:46,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:46,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:28:46,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:46,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:28:46,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:28:46,306 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 74 [2024-11-10 22:28:46,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 128 transitions, 724 flow. Second operand has 12 states, 12 states have (on average 35.166666666666664) internal successors, (422), 12 states have internal predecessors, (422), 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) [2024-11-10 22:28:46,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:46,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 74 [2024-11-10 22:28:46,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand