./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-trans.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 5bb11505151393f96d52a572beff0352326876d897656a8082ae272a8f39e0b4 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 23:37:15,296 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 23:37:15,363 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-24 23:37:15,370 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 23:37:15,371 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 23:37:15,393 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 23:37:15,393 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 23:37:15,394 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 23:37:15,394 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 23:37:15,395 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 23:37:15,395 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 23:37:15,397 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 23:37:15,398 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 23:37:15,400 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 23:37:15,400 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 23:37:15,401 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 23:37:15,401 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 23:37:15,401 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 23:37:15,402 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 23:37:15,402 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 23:37:15,402 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 23:37:15,406 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 23:37:15,406 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 23:37:15,406 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 23:37:15,407 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 23:37:15,407 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-24 23:37:15,407 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 23:37:15,407 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 23:37:15,408 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 23:37:15,408 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 23:37:15,408 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 23:37:15,408 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 23:37:15,409 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 23:37:15,409 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 23:37:15,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:37:15,409 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 23:37:15,410 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 23:37:15,410 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 23:37:15,410 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 23:37:15,410 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 23:37:15,411 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 23:37:15,411 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 23:37:15,411 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 23:37:15,412 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 23:37:15,412 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bb11505151393f96d52a572beff0352326876d897656a8082ae272a8f39e0b4 [2024-10-24 23:37:15,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 23:37:15,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 23:37:15,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 23:37:15,679 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 23:37:15,681 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 23:37:15,682 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2024-10-24 23:37:17,069 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 23:37:17,247 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 23:37:17,248 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2024-10-24 23:37:17,255 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98295369e/beed9aba23ae4ad2aa05c06bb0db04db/FLAG3dbd01ef0 [2024-10-24 23:37:17,268 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98295369e/beed9aba23ae4ad2aa05c06bb0db04db [2024-10-24 23:37:17,271 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 23:37:17,272 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 23:37:17,273 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 23:37:17,273 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 23:37:17,278 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 23:37:17,279 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:37:17" (1/1) ... [2024-10-24 23:37:17,282 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59c1c6ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:17, skipping insertion in model container [2024-10-24 23:37:17,282 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:37:17" (1/1) ... [2024-10-24 23:37:17,312 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 23:37:17,534 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:37:17,547 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 23:37:17,579 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:37:17,599 INFO L204 MainTranslator]: Completed translation [2024-10-24 23:37:17,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:17 WrapperNode [2024-10-24 23:37:17,600 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 23:37:17,601 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 23:37:17,601 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 23:37:17,601 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 23:37:17,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:17" (1/1) ... [2024-10-24 23:37:17,617 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:17" (1/1) ... [2024-10-24 23:37:17,647 INFO L138 Inliner]: procedures = 25, calls = 35, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 332 [2024-10-24 23:37:17,647 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 23:37:17,648 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 23:37:17,648 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 23:37:17,648 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 23:37:17,664 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:17" (1/1) ... [2024-10-24 23:37:17,664 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:17" (1/1) ... [2024-10-24 23:37:17,669 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:17" (1/1) ... [2024-10-24 23:37:17,687 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 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]. [2024-10-24 23:37:17,688 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:17" (1/1) ... [2024-10-24 23:37:17,688 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:17" (1/1) ... [2024-10-24 23:37:17,704 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:17" (1/1) ... [2024-10-24 23:37:17,713 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:17" (1/1) ... [2024-10-24 23:37:17,715 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:17" (1/1) ... [2024-10-24 23:37:17,717 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:17" (1/1) ... [2024-10-24 23:37:17,724 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 23:37:17,725 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 23:37:17,725 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 23:37:17,725 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 23:37:17,729 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:17" (1/1) ... [2024-10-24 23:37:17,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:37:17,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:37:17,765 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 23:37:17,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 23:37:17,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 23:37:17,814 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 23:37:17,814 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 23:37:17,814 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 23:37:17,815 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 23:37:17,815 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-24 23:37:17,815 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-24 23:37:17,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 23:37:17,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 23:37:17,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 23:37:17,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 23:37:17,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 23:37:17,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 23:37:17,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 23:37:17,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 23:37:17,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 23:37:17,820 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 23:37:17,964 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 23:37:17,966 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 23:37:18,460 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 23:37:18,460 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 23:37:18,785 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 23:37:18,786 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-24 23:37:18,786 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:37:18 BoogieIcfgContainer [2024-10-24 23:37:18,786 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 23:37:18,788 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 23:37:18,788 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 23:37:18,792 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 23:37:18,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:37:17" (1/3) ... [2024-10-24 23:37:18,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b07aa98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:37:18, skipping insertion in model container [2024-10-24 23:37:18,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:37:17" (2/3) ... [2024-10-24 23:37:18,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b07aa98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:37:18, skipping insertion in model container [2024-10-24 23:37:18,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:37:18" (3/3) ... [2024-10-24 23:37:18,796 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-trans.wvr.c [2024-10-24 23:37:18,815 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 23:37:18,815 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2024-10-24 23:37:18,815 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 23:37:18,893 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-24 23:37:18,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 128 transitions, 277 flow [2024-10-24 23:37:18,981 INFO L124 PetriNetUnfolderBase]: 15/125 cut-off events. [2024-10-24 23:37:18,985 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 23:37:18,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 125 events. 15/125 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 490 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2024-10-24 23:37:18,993 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 128 transitions, 277 flow [2024-10-24 23:37:18,998 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 123 transitions, 261 flow [2024-10-24 23:37:19,010 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:37:19,016 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;@f0f5622, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:37:19,017 INFO L334 AbstractCegarLoop]: Starting to check reachability of 69 error locations. [2024-10-24 23:37:19,020 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:37:19,020 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-24 23:37:19,020 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:37:19,020 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:19,021 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 23:37:19,022 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2024-10-24 23:37:19,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:19,027 INFO L85 PathProgramCache]: Analyzing trace with hash 967357, now seen corresponding path program 1 times [2024-10-24 23:37:19,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:19,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146350284] [2024-10-24 23:37:19,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:19,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:19,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:19,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:19,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146350284] [2024-10-24 23:37:19,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146350284] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:19,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:37:19,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:37:19,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478840689] [2024-10-24 23:37:19,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:19,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:37:19,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:19,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:37:19,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:37:19,391 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 128 [2024-10-24 23:37:19,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 123 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:19,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:19,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 128 [2024-10-24 23:37:19,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:21,489 INFO L124 PetriNetUnfolderBase]: 10162/19360 cut-off events. [2024-10-24 23:37:21,490 INFO L125 PetriNetUnfolderBase]: For 458/458 co-relation queries the response was YES. [2024-10-24 23:37:21,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33112 conditions, 19360 events. 10162/19360 cut-off events. For 458/458 co-relation queries the response was YES. Maximal size of possible extension queue 1009. Compared 173874 event pairs, 6776 based on Foata normal form. 3/14956 useless extension candidates. Maximal degree in co-relation 31919. Up to 13364 conditions per place. [2024-10-24 23:37:21,648 INFO L140 encePairwiseOnDemand]: 112/128 looper letters, 62 selfloop transitions, 10 changer transitions 0/132 dead transitions. [2024-10-24 23:37:21,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 132 transitions, 423 flow [2024-10-24 23:37:21,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:37:21,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:37:21,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 330 transitions. [2024-10-24 23:37:21,666 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64453125 [2024-10-24 23:37:21,669 INFO L175 Difference]: Start difference. First operand has 118 places, 123 transitions, 261 flow. Second operand 4 states and 330 transitions. [2024-10-24 23:37:21,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 132 transitions, 423 flow [2024-10-24 23:37:21,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 132 transitions, 414 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-24 23:37:21,692 INFO L231 Difference]: Finished difference. Result has 119 places, 132 transitions, 340 flow [2024-10-24 23:37:21,695 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=340, PETRI_PLACES=119, PETRI_TRANSITIONS=132} [2024-10-24 23:37:21,699 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 1 predicate places. [2024-10-24 23:37:21,701 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 132 transitions, 340 flow [2024-10-24 23:37:21,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:21,702 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:21,702 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-24 23:37:21,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 23:37:21,703 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2024-10-24 23:37:21,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:21,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1245269406, now seen corresponding path program 1 times [2024-10-24 23:37:21,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:21,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993546904] [2024-10-24 23:37:21,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:21,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:21,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:21,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:21,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993546904] [2024-10-24 23:37:21,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993546904] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:37:21,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762237658] [2024-10-24 23:37:21,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:21,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:21,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:37:21,878 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:37:21,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 23:37:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:21,960 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:37:21,964 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:37:22,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:22,013 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:37:22,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762237658] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:22,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:37:22,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-24 23:37:22,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300344718] [2024-10-24 23:37:22,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:22,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:37:22,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:22,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:37:22,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:37:22,039 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 128 [2024-10-24 23:37:22,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 132 transitions, 340 flow. Second operand has 6 states, 6 states have (on average 63.833333333333336) internal successors, (383), 6 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:22,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:22,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 128 [2024-10-24 23:37:22,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:23,821 INFO L124 PetriNetUnfolderBase]: 10162/19357 cut-off events. [2024-10-24 23:37:23,821 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2024-10-24 23:37:23,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33001 conditions, 19357 events. 10162/19357 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 1009. Compared 173866 event pairs, 6776 based on Foata normal form. 3/14958 useless extension candidates. Maximal degree in co-relation 32928. Up to 13349 conditions per place. [2024-10-24 23:37:23,982 INFO L140 encePairwiseOnDemand]: 115/128 looper letters, 52 selfloop transitions, 17 changer transitions 0/129 dead transitions. [2024-10-24 23:37:23,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 129 transitions, 466 flow [2024-10-24 23:37:23,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:37:23,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:37:23,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 450 transitions. [2024-10-24 23:37:23,986 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5859375 [2024-10-24 23:37:23,987 INFO L175 Difference]: Start difference. First operand has 119 places, 132 transitions, 340 flow. Second operand 6 states and 450 transitions. [2024-10-24 23:37:23,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 129 transitions, 466 flow [2024-10-24 23:37:23,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 129 transitions, 466 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:37:23,991 INFO L231 Difference]: Finished difference. Result has 121 places, 129 transitions, 362 flow [2024-10-24 23:37:23,991 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=362, PETRI_PLACES=121, PETRI_TRANSITIONS=129} [2024-10-24 23:37:23,992 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 3 predicate places. [2024-10-24 23:37:23,992 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 129 transitions, 362 flow [2024-10-24 23:37:23,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.833333333333336) internal successors, (383), 6 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:23,992 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:23,993 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-24 23:37:24,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-24 23:37:24,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:24,194 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2024-10-24 23:37:24,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:24,195 INFO L85 PathProgramCache]: Analyzing trace with hash 51355055, now seen corresponding path program 1 times [2024-10-24 23:37:24,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:24,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536705107] [2024-10-24 23:37:24,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:24,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:24,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:24,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:24,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536705107] [2024-10-24 23:37:24,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536705107] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:37:24,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453711600] [2024-10-24 23:37:24,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:24,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:37:24,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:37:24,410 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:37:24,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 23:37:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:24,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:37:24,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:37:24,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:24,521 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:37:24,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:24,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453711600] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:37:24,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:37:24,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-24 23:37:24,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50961027] [2024-10-24 23:37:24,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:37:24,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 23:37:24,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:24,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 23:37:24,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-24 23:37:24,612 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 128 [2024-10-24 23:37:24,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 129 transitions, 362 flow. Second operand has 12 states, 12 states have (on average 64.08333333333333) internal successors, (769), 12 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:24,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:24,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 128 [2024-10-24 23:37:24,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:26,431 INFO L124 PetriNetUnfolderBase]: 10171/19393 cut-off events. [2024-10-24 23:37:26,431 INFO L125 PetriNetUnfolderBase]: For 186/186 co-relation queries the response was YES. [2024-10-24 23:37:26,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33142 conditions, 19393 events. 10171/19393 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 1011. Compared 174131 event pairs, 6776 based on Foata normal form. 9/15000 useless extension candidates. Maximal degree in co-relation 32930. Up to 13364 conditions per place. [2024-10-24 23:37:26,545 INFO L140 encePairwiseOnDemand]: 115/128 looper letters, 59 selfloop transitions, 37 changer transitions 0/156 dead transitions. [2024-10-24 23:37:26,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 156 transitions, 728 flow [2024-10-24 23:37:26,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 23:37:26,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 23:37:26,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 735 transitions. [2024-10-24 23:37:26,548 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.57421875 [2024-10-24 23:37:26,549 INFO L175 Difference]: Start difference. First operand has 121 places, 129 transitions, 362 flow. Second operand 10 states and 735 transitions. [2024-10-24 23:37:26,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 156 transitions, 728 flow [2024-10-24 23:37:26,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 156 transitions, 645 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-10-24 23:37:26,556 INFO L231 Difference]: Finished difference. Result has 128 places, 156 transitions, 577 flow [2024-10-24 23:37:26,556 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=577, PETRI_PLACES=128, PETRI_TRANSITIONS=156} [2024-10-24 23:37:26,557 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 10 predicate places. [2024-10-24 23:37:26,557 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 156 transitions, 577 flow [2024-10-24 23:37:26,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 64.08333333333333) internal successors, (769), 12 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:26,558 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:26,558 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:26,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 23:37:26,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-24 23:37:26,759 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2024-10-24 23:37:26,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:26,760 INFO L85 PathProgramCache]: Analyzing trace with hash 83420374, now seen corresponding path program 1 times [2024-10-24 23:37:26,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:26,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978039256] [2024-10-24 23:37:26,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:26,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:26,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:26,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:26,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978039256] [2024-10-24 23:37:26,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978039256] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:26,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:37:26,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:37:26,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297731226] [2024-10-24 23:37:26,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:26,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:37:26,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:26,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:37:26,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:37:26,905 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 128 [2024-10-24 23:37:26,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 156 transitions, 577 flow. Second operand has 5 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:26,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:26,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 128 [2024-10-24 23:37:26,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:29,528 INFO L124 PetriNetUnfolderBase]: 22073/42035 cut-off events. [2024-10-24 23:37:29,529 INFO L125 PetriNetUnfolderBase]: For 365/365 co-relation queries the response was YES. [2024-10-24 23:37:29,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71724 conditions, 42035 events. 22073/42035 cut-off events. For 365/365 co-relation queries the response was YES. Maximal size of possible extension queue 1975. Compared 417520 event pairs, 14676 based on Foata normal form. 250/32722 useless extension candidates. Maximal degree in co-relation 71597. Up to 14608 conditions per place. [2024-10-24 23:37:29,977 INFO L140 encePairwiseOnDemand]: 122/128 looper letters, 149 selfloop transitions, 9 changer transitions 0/219 dead transitions. [2024-10-24 23:37:29,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 219 transitions, 1098 flow [2024-10-24 23:37:29,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:37:29,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:37:29,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 449 transitions. [2024-10-24 23:37:29,979 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7015625 [2024-10-24 23:37:29,979 INFO L175 Difference]: Start difference. First operand has 128 places, 156 transitions, 577 flow. Second operand 5 states and 449 transitions. [2024-10-24 23:37:29,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 219 transitions, 1098 flow [2024-10-24 23:37:29,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 219 transitions, 1051 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-10-24 23:37:29,988 INFO L231 Difference]: Finished difference. Result has 132 places, 157 transitions, 574 flow [2024-10-24 23:37:29,989 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=574, PETRI_PLACES=132, PETRI_TRANSITIONS=157} [2024-10-24 23:37:29,989 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 14 predicate places. [2024-10-24 23:37:29,989 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 157 transitions, 574 flow [2024-10-24 23:37:29,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:29,990 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:29,990 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:29,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 23:37:29,990 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2024-10-24 23:37:29,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:29,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1708934626, now seen corresponding path program 1 times [2024-10-24 23:37:29,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:29,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976968212] [2024-10-24 23:37:29,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:29,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:30,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:30,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:30,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976968212] [2024-10-24 23:37:30,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976968212] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:30,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:37:30,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:37:30,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143047711] [2024-10-24 23:37:30,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:30,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:37:30,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:30,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:37:30,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:37:30,147 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 128 [2024-10-24 23:37:30,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 157 transitions, 574 flow. Second operand has 5 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:30,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:30,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 128 [2024-10-24 23:37:30,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:35,347 INFO L124 PetriNetUnfolderBase]: 42648/80996 cut-off events. [2024-10-24 23:37:35,347 INFO L125 PetriNetUnfolderBase]: For 3111/3111 co-relation queries the response was YES. [2024-10-24 23:37:35,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139496 conditions, 80996 events. 42648/80996 cut-off events. For 3111/3111 co-relation queries the response was YES. Maximal size of possible extension queue 3763. Compared 873547 event pairs, 28228 based on Foata normal form. 498/63945 useless extension candidates. Maximal degree in co-relation 139285. Up to 27997 conditions per place. [2024-10-24 23:37:35,831 INFO L140 encePairwiseOnDemand]: 119/128 looper letters, 165 selfloop transitions, 12 changer transitions 0/238 dead transitions. [2024-10-24 23:37:35,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 238 transitions, 1244 flow [2024-10-24 23:37:35,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 23:37:35,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-24 23:37:35,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 592 transitions. [2024-10-24 23:37:35,836 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6607142857142857 [2024-10-24 23:37:35,836 INFO L175 Difference]: Start difference. First operand has 132 places, 157 transitions, 574 flow. Second operand 7 states and 592 transitions. [2024-10-24 23:37:35,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 238 transitions, 1244 flow [2024-10-24 23:37:35,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 238 transitions, 1239 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-24 23:37:35,846 INFO L231 Difference]: Finished difference. Result has 142 places, 166 transitions, 693 flow [2024-10-24 23:37:35,846 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=693, PETRI_PLACES=142, PETRI_TRANSITIONS=166} [2024-10-24 23:37:35,847 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 24 predicate places. [2024-10-24 23:37:35,848 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 166 transitions, 693 flow [2024-10-24 23:37:35,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:35,849 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:35,849 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:35,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 23:37:35,849 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2024-10-24 23:37:35,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:35,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1440787923, now seen corresponding path program 1 times [2024-10-24 23:37:35,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:35,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073054931] [2024-10-24 23:37:35,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:35,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:35,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:35,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:35,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:35,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073054931] [2024-10-24 23:37:35,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073054931] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:35,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:37:35,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 23:37:35,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115792584] [2024-10-24 23:37:35,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:35,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:37:35,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:35,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:37:35,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:37:35,982 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 128 [2024-10-24 23:37:35,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 166 transitions, 693 flow. Second operand has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:35,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:35,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 128 [2024-10-24 23:37:35,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:37:47,628 INFO L124 PetriNetUnfolderBase]: 88832/167860 cut-off events. [2024-10-24 23:37:47,628 INFO L125 PetriNetUnfolderBase]: For 1163/1163 co-relation queries the response was YES. [2024-10-24 23:37:48,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286874 conditions, 167860 events. 88832/167860 cut-off events. For 1163/1163 co-relation queries the response was YES. Maximal size of possible extension queue 7391. Compared 1959762 event pairs, 59128 based on Foata normal form. 1096/130884 useless extension candidates. Maximal degree in co-relation 286656. Up to 58808 conditions per place. [2024-10-24 23:37:48,752 INFO L140 encePairwiseOnDemand]: 122/128 looper letters, 131 selfloop transitions, 20 changer transitions 0/214 dead transitions. [2024-10-24 23:37:48,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 214 transitions, 1097 flow [2024-10-24 23:37:48,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:37:48,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:37:48,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 446 transitions. [2024-10-24 23:37:48,753 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.696875 [2024-10-24 23:37:48,753 INFO L175 Difference]: Start difference. First operand has 142 places, 166 transitions, 693 flow. Second operand 5 states and 446 transitions. [2024-10-24 23:37:48,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 214 transitions, 1097 flow [2024-10-24 23:37:48,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 214 transitions, 1095 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-24 23:37:48,759 INFO L231 Difference]: Finished difference. Result has 148 places, 167 transitions, 748 flow [2024-10-24 23:37:48,759 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=748, PETRI_PLACES=148, PETRI_TRANSITIONS=167} [2024-10-24 23:37:48,760 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 30 predicate places. [2024-10-24 23:37:48,760 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 167 transitions, 748 flow [2024-10-24 23:37:48,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:48,760 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:37:48,760 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:37:48,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 23:37:48,761 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2024-10-24 23:37:48,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:37:48,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1714751545, now seen corresponding path program 1 times [2024-10-24 23:37:48,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:37:48,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261939549] [2024-10-24 23:37:48,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:37:48,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:37:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:37:48,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:37:48,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:37:48,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261939549] [2024-10-24 23:37:48,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261939549] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:37:48,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:37:48,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 23:37:48,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14693027] [2024-10-24 23:37:48,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:37:48,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:37:48,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:37:48,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:37:48,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:37:48,918 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 128 [2024-10-24 23:37:48,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 167 transitions, 748 flow. Second operand has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:37:48,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:37:48,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 128 [2024-10-24 23:37:48,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand