./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-word-subst.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/chl-word-subst.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 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:23:11,678 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:23:11,766 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:23:11,772 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:23:11,774 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:23:11,806 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:23:11,809 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:23:11,809 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:23:11,810 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:23:11,810 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:23:11,811 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:23:11,811 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:23:11,812 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:23:11,814 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:23:11,815 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:23:11,815 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:23:11,815 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:23:11,816 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:23:11,816 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:23:11,816 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:23:11,816 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:23:11,817 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:23:11,821 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:23:11,821 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:23:11,822 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:23:11,822 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:23:11,822 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:23:11,822 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:23:11,823 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:23:11,823 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:23:11,823 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:23:11,823 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:23:11,823 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:23:11,824 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:23:11,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:23:11,824 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:23:11,825 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:23:11,825 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:23:11,826 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:23:11,826 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:23:11,826 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:23:11,827 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:23:11,827 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:23:11,827 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:23:11,828 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 [2024-11-10 22:23:12,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:23:12,135 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:23:12,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:23:12,140 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:23:12,141 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:23:12,142 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2024-11-10 22:23:13,627 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:23:13,853 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:23:13,857 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2024-11-10 22:23:13,870 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bb6df262/54a4f58a4a7748c6a8fb189cef0a357d/FLAG7c6cc85b2 [2024-11-10 22:23:13,889 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bb6df262/54a4f58a4a7748c6a8fb189cef0a357d [2024-11-10 22:23:13,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:23:13,895 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:23:13,897 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:23:13,898 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:23:13,903 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:23:13,904 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:23:13" (1/1) ... [2024-11-10 22:23:13,905 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53bfc457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:13, skipping insertion in model container [2024-11-10 22:23:13,906 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:23:13" (1/1) ... [2024-11-10 22:23:13,935 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:23:14,169 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:23:14,177 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:23:14,221 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:23:14,237 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:23:14,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:14 WrapperNode [2024-11-10 22:23:14,237 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:23:14,238 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:23:14,238 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:23:14,239 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:23:14,245 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:14" (1/1) ... [2024-11-10 22:23:14,253 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:14" (1/1) ... [2024-11-10 22:23:14,286 INFO L138 Inliner]: procedures = 24, calls = 31, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 174 [2024-11-10 22:23:14,287 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:23:14,287 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:23:14,287 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:23:14,287 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:23:14,302 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:14" (1/1) ... [2024-11-10 22:23:14,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:14" (1/1) ... [2024-11-10 22:23:14,307 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:14" (1/1) ... [2024-11-10 22:23:14,332 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]. [2024-11-10 22:23:14,333 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:14" (1/1) ... [2024-11-10 22:23:14,333 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:14" (1/1) ... [2024-11-10 22:23:14,348 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:14" (1/1) ... [2024-11-10 22:23:14,349 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:14" (1/1) ... [2024-11-10 22:23:14,351 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:14" (1/1) ... [2024-11-10 22:23:14,352 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:14" (1/1) ... [2024-11-10 22:23:14,359 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:23:14,362 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:23:14,362 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:23:14,363 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:23:14,364 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:14" (1/1) ... [2024-11-10 22:23:14,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:23:14,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:23:14,398 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 22:23:14,401 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 22:23:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:23:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 22:23:14,447 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 22:23:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 22:23:14,447 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 22:23:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 22:23:14,447 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 22:23:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:23:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 22:23:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 22:23:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 22:23:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 22:23:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:23:14,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:23:14,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 22:23:14,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 22:23:14,452 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 22:23:14,556 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:23:14,558 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:23:15,108 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:23:15,108 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:23:15,402 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:23:15,403 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:23:15,403 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:23:15 BoogieIcfgContainer [2024-11-10 22:23:15,403 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:23:15,406 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:23:15,406 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:23:15,410 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:23:15,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:23:13" (1/3) ... [2024-11-10 22:23:15,413 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4407283b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:23:15, skipping insertion in model container [2024-11-10 22:23:15,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:14" (2/3) ... [2024-11-10 22:23:15,413 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4407283b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:23:15, skipping insertion in model container [2024-11-10 22:23:15,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:23:15" (3/3) ... [2024-11-10 22:23:15,416 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2024-11-10 22:23:15,434 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:23:15,434 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-11-10 22:23:15,435 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:23:15,509 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 22:23:15,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 104 transitions, 229 flow [2024-11-10 22:23:15,624 INFO L124 PetriNetUnfolderBase]: 21/101 cut-off events. [2024-11-10 22:23:15,624 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 22:23:15,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 101 events. 21/101 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 306 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 78. Up to 3 conditions per place. [2024-11-10 22:23:15,631 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 104 transitions, 229 flow [2024-11-10 22:23:15,636 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 99 transitions, 213 flow [2024-11-10 22:23:15,649 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:23:15,659 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;@532cb90b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:23:15,659 INFO L334 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2024-11-10 22:23:15,664 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:23:15,664 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-10 22:23:15,664 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:23:15,664 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:15,665 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 22:23:15,665 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-10 22:23:15,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:15,672 INFO L85 PathProgramCache]: Analyzing trace with hash 22207645, now seen corresponding path program 1 times [2024-11-10 22:23:15,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:15,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411500140] [2024-11-10 22:23:15,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:15,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:15,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:16,009 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 22:23:16,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:16,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411500140] [2024-11-10 22:23:16,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411500140] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:16,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:16,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:23:16,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904850615] [2024-11-10 22:23:16,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:16,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:23:16,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:16,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:23:16,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:23:16,086 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 104 [2024-11-10 22:23:16,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 99 transitions, 213 flow. Second operand has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 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 22:23:16,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:16,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 104 [2024-11-10 22:23:16,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:17,107 INFO L124 PetriNetUnfolderBase]: 3762/7141 cut-off events. [2024-11-10 22:23:17,107 INFO L125 PetriNetUnfolderBase]: For 213/213 co-relation queries the response was YES. [2024-11-10 22:23:17,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12006 conditions, 7141 events. 3762/7141 cut-off events. For 213/213 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 54157 event pairs, 2256 based on Foata normal form. 414/5671 useless extension candidates. Maximal degree in co-relation 11319. Up to 4655 conditions per place. [2024-11-10 22:23:17,182 INFO L140 encePairwiseOnDemand]: 82/104 looper letters, 50 selfloop transitions, 10 changer transitions 0/102 dead transitions. [2024-11-10 22:23:17,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 102 transitions, 339 flow [2024-11-10 22:23:17,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:23:17,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:23:17,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 255 transitions. [2024-11-10 22:23:17,198 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6129807692307693 [2024-11-10 22:23:17,200 INFO L175 Difference]: Start difference. First operand has 88 places, 99 transitions, 213 flow. Second operand 4 states and 255 transitions. [2024-11-10 22:23:17,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 102 transitions, 339 flow [2024-11-10 22:23:17,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 102 transitions, 330 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 22:23:17,219 INFO L231 Difference]: Finished difference. Result has 89 places, 102 transitions, 280 flow [2024-11-10 22:23:17,222 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=280, PETRI_PLACES=89, PETRI_TRANSITIONS=102} [2024-11-10 22:23:17,227 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, 1 predicate places. [2024-11-10 22:23:17,228 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 102 transitions, 280 flow [2024-11-10 22:23:17,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 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 22:23:17,228 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:17,228 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-10 22:23:17,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:23:17,229 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-10 22:23:17,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:17,229 INFO L85 PathProgramCache]: Analyzing trace with hash 776580489, now seen corresponding path program 1 times [2024-11-10 22:23:17,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:17,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983502484] [2024-11-10 22:23:17,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:17,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:17,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:17,402 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 22:23:17,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:17,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983502484] [2024-11-10 22:23:17,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983502484] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:23:17,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751680225] [2024-11-10 22:23:17,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:17,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:23:17,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:23:17,406 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 22:23:17,407 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 22:23:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:17,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:23:17,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:23:17,570 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 22:23:17,570 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:23:17,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751680225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:17,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:23:17,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-10 22:23:17,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039429036] [2024-11-10 22:23:17,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:17,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:23:17,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:17,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:23:17,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:23:17,620 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 104 [2024-11-10 22:23:17,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 102 transitions, 280 flow. Second operand has 6 states, 6 states have (on average 45.833333333333336) internal successors, (275), 6 states have internal predecessors, (275), 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 22:23:17,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:17,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 104 [2024-11-10 22:23:17,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:18,432 INFO L124 PetriNetUnfolderBase]: 3762/7138 cut-off events. [2024-11-10 22:23:18,433 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2024-11-10 22:23:18,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11958 conditions, 7138 events. 3762/7138 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 54147 event pairs, 2256 based on Foata normal form. 3/5257 useless extension candidates. Maximal degree in co-relation 11879. Up to 4640 conditions per place. [2024-11-10 22:23:18,500 INFO L140 encePairwiseOnDemand]: 91/104 looper letters, 40 selfloop transitions, 17 changer transitions 0/99 dead transitions. [2024-11-10 22:23:18,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 99 transitions, 382 flow [2024-11-10 22:23:18,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:23:18,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:23:18,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 330 transitions. [2024-11-10 22:23:18,503 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5288461538461539 [2024-11-10 22:23:18,503 INFO L175 Difference]: Start difference. First operand has 89 places, 102 transitions, 280 flow. Second operand 6 states and 330 transitions. [2024-11-10 22:23:18,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 99 transitions, 382 flow [2024-11-10 22:23:18,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 99 transitions, 382 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:23:18,508 INFO L231 Difference]: Finished difference. Result has 91 places, 99 transitions, 302 flow [2024-11-10 22:23:18,508 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=302, PETRI_PLACES=91, PETRI_TRANSITIONS=99} [2024-11-10 22:23:18,509 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, 3 predicate places. [2024-11-10 22:23:18,509 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 99 transitions, 302 flow [2024-11-10 22:23:18,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 45.833333333333336) internal successors, (275), 6 states have internal predecessors, (275), 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 22:23:18,510 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:18,510 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-10 22:23:18,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-10 22:23:18,714 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 22:23:18,715 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-10 22:23:18,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:18,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1695808007, now seen corresponding path program 1 times [2024-11-10 22:23:18,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:18,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778604059] [2024-11-10 22:23:18,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:18,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:18,817 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 22:23:18,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:18,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778604059] [2024-11-10 22:23:18,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778604059] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:23:18,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97776958] [2024-11-10 22:23:18,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:18,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:23:18,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:23:18,822 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 22:23:18,823 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 22:23:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:18,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:23:18,901 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:23:18,935 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 22:23:18,935 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:23:18,981 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 22:23:18,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97776958] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:23:18,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:23:18,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-10 22:23:18,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293234095] [2024-11-10 22:23:18,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:23:18,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:23:18,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:18,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:23:18,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:23:19,063 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 104 [2024-11-10 22:23:19,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 99 transitions, 302 flow. Second operand has 12 states, 12 states have (on average 46.083333333333336) internal successors, (553), 12 states have internal predecessors, (553), 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 22:23:19,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:19,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 104 [2024-11-10 22:23:19,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:19,921 INFO L124 PetriNetUnfolderBase]: 3771/7192 cut-off events. [2024-11-10 22:23:19,922 INFO L125 PetriNetUnfolderBase]: For 236/236 co-relation queries the response was YES. [2024-11-10 22:23:19,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12117 conditions, 7192 events. 3771/7192 cut-off events. For 236/236 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 54816 event pairs, 2256 based on Foata normal form. 9/5320 useless extension candidates. Maximal degree in co-relation 11881. Up to 4655 conditions per place. [2024-11-10 22:23:19,980 INFO L140 encePairwiseOnDemand]: 91/104 looper letters, 47 selfloop transitions, 37 changer transitions 0/126 dead transitions. [2024-11-10 22:23:19,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 126 transitions, 644 flow [2024-11-10 22:23:19,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:23:19,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:23:19,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 543 transitions. [2024-11-10 22:23:19,983 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5221153846153846 [2024-11-10 22:23:19,983 INFO L175 Difference]: Start difference. First operand has 91 places, 99 transitions, 302 flow. Second operand 10 states and 543 transitions. [2024-11-10 22:23:19,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 126 transitions, 644 flow [2024-11-10 22:23:19,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 126 transitions, 561 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-10 22:23:19,992 INFO L231 Difference]: Finished difference. Result has 98 places, 126 transitions, 517 flow [2024-11-10 22:23:19,992 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=517, PETRI_PLACES=98, PETRI_TRANSITIONS=126} [2024-11-10 22:23:19,993 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, 10 predicate places. [2024-11-10 22:23:19,993 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 126 transitions, 517 flow [2024-11-10 22:23:19,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 46.083333333333336) internal successors, (553), 12 states have internal predecessors, (553), 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 22:23:19,994 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:19,994 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:20,014 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 22:23:20,195 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 22:23:20,195 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-10 22:23:20,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:20,196 INFO L85 PathProgramCache]: Analyzing trace with hash 754316412, now seen corresponding path program 1 times [2024-11-10 22:23:20,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:20,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056430824] [2024-11-10 22:23:20,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:20,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:20,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:20,283 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 22:23:20,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:20,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056430824] [2024-11-10 22:23:20,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056430824] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:20,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:20,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:23:20,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537759799] [2024-11-10 22:23:20,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:20,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:23:20,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:20,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:23:20,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:23:20,298 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 104 [2024-11-10 22:23:20,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 126 transitions, 517 flow. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 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 22:23:20,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:20,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 104 [2024-11-10 22:23:20,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:21,485 INFO L124 PetriNetUnfolderBase]: 6690/11531 cut-off events. [2024-11-10 22:23:21,485 INFO L125 PetriNetUnfolderBase]: For 281/281 co-relation queries the response was YES. [2024-11-10 22:23:21,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20369 conditions, 11531 events. 6690/11531 cut-off events. For 281/281 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 82249 event pairs, 3234 based on Foata normal form. 146/8878 useless extension candidates. Maximal degree in co-relation 20265. Up to 6602 conditions per place. [2024-11-10 22:23:21,591 INFO L140 encePairwiseOnDemand]: 98/104 looper letters, 131 selfloop transitions, 4 changer transitions 0/177 dead transitions. [2024-11-10 22:23:21,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 177 transitions, 895 flow [2024-11-10 22:23:21,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:23:21,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:23:21,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 293 transitions. [2024-11-10 22:23:21,594 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7043269230769231 [2024-11-10 22:23:21,594 INFO L175 Difference]: Start difference. First operand has 98 places, 126 transitions, 517 flow. Second operand 4 states and 293 transitions. [2024-11-10 22:23:21,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 177 transitions, 895 flow [2024-11-10 22:23:21,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 177 transitions, 858 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-10 22:23:21,599 INFO L231 Difference]: Finished difference. Result has 101 places, 129 transitions, 509 flow [2024-11-10 22:23:21,600 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=509, PETRI_PLACES=101, PETRI_TRANSITIONS=129} [2024-11-10 22:23:21,603 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, 13 predicate places. [2024-11-10 22:23:21,603 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 129 transitions, 509 flow [2024-11-10 22:23:21,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 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 22:23:21,603 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:21,604 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:21,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 22:23:21,604 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-10 22:23:21,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:21,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1908941212, now seen corresponding path program 1 times [2024-11-10 22:23:21,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:21,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786735962] [2024-11-10 22:23:21,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:21,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:21,752 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 22:23:21,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:21,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786735962] [2024-11-10 22:23:21,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786735962] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:21,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:21,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:23:21,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176331119] [2024-11-10 22:23:21,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:21,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:23:21,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:21,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:23:21,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 22:23:21,827 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 104 [2024-11-10 22:23:21,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 129 transitions, 509 flow. Second operand has 6 states, 6 states have (on average 47.833333333333336) internal successors, (287), 6 states have internal predecessors, (287), 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 22:23:21,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:21,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 104 [2024-11-10 22:23:21,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:24,029 INFO L124 PetriNetUnfolderBase]: 12840/23870 cut-off events. [2024-11-10 22:23:24,030 INFO L125 PetriNetUnfolderBase]: For 2672/2684 co-relation queries the response was YES. [2024-11-10 22:23:24,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42654 conditions, 23870 events. 12840/23870 cut-off events. For 2672/2684 co-relation queries the response was YES. Maximal size of possible extension queue 1107. Compared 211438 event pairs, 7338 based on Foata normal form. 313/18593 useless extension candidates. Maximal degree in co-relation 42518. Up to 8006 conditions per place. [2024-11-10 22:23:24,271 INFO L140 encePairwiseOnDemand]: 96/104 looper letters, 133 selfloop transitions, 11 changer transitions 0/185 dead transitions. [2024-11-10 22:23:24,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 185 transitions, 992 flow [2024-11-10 22:23:24,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 22:23:24,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 22:23:24,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 421 transitions. [2024-11-10 22:23:24,273 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5782967032967034 [2024-11-10 22:23:24,273 INFO L175 Difference]: Start difference. First operand has 101 places, 129 transitions, 509 flow. Second operand 7 states and 421 transitions. [2024-11-10 22:23:24,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 185 transitions, 992 flow [2024-11-10 22:23:24,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 185 transitions, 987 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:23:24,283 INFO L231 Difference]: Finished difference. Result has 110 places, 133 transitions, 569 flow [2024-11-10 22:23:24,283 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=569, PETRI_PLACES=110, PETRI_TRANSITIONS=133} [2024-11-10 22:23:24,285 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, 22 predicate places. [2024-11-10 22:23:24,285 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 133 transitions, 569 flow [2024-11-10 22:23:24,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 47.833333333333336) internal successors, (287), 6 states have internal predecessors, (287), 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 22:23:24,286 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:24,286 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 22:23:24,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 22:23:24,286 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-10 22:23:24,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:24,287 INFO L85 PathProgramCache]: Analyzing trace with hash -952363874, now seen corresponding path program 1 times [2024-11-10 22:23:24,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:24,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074026184] [2024-11-10 22:23:24,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:24,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:24,418 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 22:23:24,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:24,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074026184] [2024-11-10 22:23:24,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074026184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:24,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:24,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:23:24,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351117028] [2024-11-10 22:23:24,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:24,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:23:24,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:24,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:23:24,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:23:24,463 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 104 [2024-11-10 22:23:24,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 133 transitions, 569 flow. Second operand has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:24,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:24,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 104 [2024-11-10 22:23:24,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:27,935 INFO L124 PetriNetUnfolderBase]: 24642/46124 cut-off events. [2024-11-10 22:23:27,935 INFO L125 PetriNetUnfolderBase]: For 8135/8159 co-relation queries the response was YES. [2024-11-10 22:23:28,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83840 conditions, 46124 events. 24642/46124 cut-off events. For 8135/8159 co-relation queries the response was YES. Maximal size of possible extension queue 1978. Compared 447119 event pairs, 14108 based on Foata normal form. 524/37022 useless extension candidates. Maximal degree in co-relation 83603. Up to 14908 conditions per place. [2024-11-10 22:23:28,682 INFO L140 encePairwiseOnDemand]: 98/104 looper letters, 184 selfloop transitions, 5 changer transitions 0/230 dead transitions. [2024-11-10 22:23:28,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 230 transitions, 1323 flow [2024-11-10 22:23:28,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:23:28,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:23:28,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 398 transitions. [2024-11-10 22:23:28,686 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6378205128205128 [2024-11-10 22:23:28,687 INFO L175 Difference]: Start difference. First operand has 110 places, 133 transitions, 569 flow. Second operand 6 states and 398 transitions. [2024-11-10 22:23:28,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 230 transitions, 1323 flow [2024-11-10 22:23:28,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 230 transitions, 1316 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:23:28,701 INFO L231 Difference]: Finished difference. Result has 116 places, 135 transitions, 593 flow [2024-11-10 22:23:28,702 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=593, PETRI_PLACES=116, PETRI_TRANSITIONS=135} [2024-11-10 22:23:28,704 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, 28 predicate places. [2024-11-10 22:23:28,704 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 135 transitions, 593 flow [2024-11-10 22:23:28,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:28,705 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:28,705 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 22:23:28,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 22:23:28,705 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-10 22:23:28,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:28,706 INFO L85 PathProgramCache]: Analyzing trace with hash -882472744, now seen corresponding path program 1 times [2024-11-10 22:23:28,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:28,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380163543] [2024-11-10 22:23:28,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:28,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:28,769 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 22:23:28,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:28,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380163543] [2024-11-10 22:23:28,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380163543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:28,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:28,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:23:28,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112173880] [2024-11-10 22:23:28,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:28,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:23:28,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:28,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:23:28,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:23:28,778 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 104 [2024-11-10 22:23:28,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 135 transitions, 593 flow. Second operand has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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 22:23:28,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:28,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 104 [2024-11-10 22:23:28,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:33,589 INFO L124 PetriNetUnfolderBase]: 39618/66634 cut-off events. [2024-11-10 22:23:33,589 INFO L125 PetriNetUnfolderBase]: For 7883/8627 co-relation queries the response was YES. [2024-11-10 22:23:33,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125957 conditions, 66634 events. 39618/66634 cut-off events. For 7883/8627 co-relation queries the response was YES. Maximal size of possible extension queue 1992. Compared 580643 event pairs, 19400 based on Foata normal form. 896/56170 useless extension candidates. Maximal degree in co-relation 125724. Up to 38659 conditions per place. [2024-11-10 22:23:34,242 INFO L140 encePairwiseOnDemand]: 98/104 looper letters, 137 selfloop transitions, 4 changer transitions 0/188 dead transitions. [2024-11-10 22:23:34,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 188 transitions, 1011 flow [2024-11-10 22:23:34,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:23:34,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:23:34,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 291 transitions. [2024-11-10 22:23:34,244 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6995192307692307 [2024-11-10 22:23:34,244 INFO L175 Difference]: Start difference. First operand has 116 places, 135 transitions, 593 flow. Second operand 4 states and 291 transitions. [2024-11-10 22:23:34,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 188 transitions, 1011 flow [2024-11-10 22:23:34,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 188 transitions, 1009 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-10 22:23:34,256 INFO L231 Difference]: Finished difference. Result has 121 places, 138 transitions, 620 flow [2024-11-10 22:23:34,256 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=620, PETRI_PLACES=121, PETRI_TRANSITIONS=138} [2024-11-10 22:23:34,257 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, 33 predicate places. [2024-11-10 22:23:34,257 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 138 transitions, 620 flow [2024-11-10 22:23:34,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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 22:23:34,258 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:34,258 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 22:23:34,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 22:23:34,258 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-10 22:23:34,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:34,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1586882347, now seen corresponding path program 1 times [2024-11-10 22:23:34,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:34,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537272665] [2024-11-10 22:23:34,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:34,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:34,416 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 22:23:34,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:34,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537272665] [2024-11-10 22:23:34,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537272665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:34,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:34,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:23:34,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540803449] [2024-11-10 22:23:34,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:34,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:23:34,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:34,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:23:34,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 22:23:34,494 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 104 [2024-11-10 22:23:34,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 138 transitions, 620 flow. Second operand has 6 states, 6 states have (on average 48.166666666666664) internal successors, (289), 6 states have internal predecessors, (289), 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 22:23:34,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:34,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 104 [2024-11-10 22:23:34,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:45,193 INFO L124 PetriNetUnfolderBase]: 75290/136130 cut-off events. [2024-11-10 22:23:45,193 INFO L125 PetriNetUnfolderBase]: For 26967/27167 co-relation queries the response was YES. [2024-11-10 22:23:46,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263662 conditions, 136130 events. 75290/136130 cut-off events. For 26967/27167 co-relation queries the response was YES. Maximal size of possible extension queue 4793. Compared 1435936 event pairs, 43688 based on Foata normal form. 1344/115042 useless extension candidates. Maximal degree in co-relation 263419. Up to 46392 conditions per place. [2024-11-10 22:23:46,993 INFO L140 encePairwiseOnDemand]: 96/104 looper letters, 118 selfloop transitions, 17 changer transitions 0/179 dead transitions. [2024-11-10 22:23:46,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 179 transitions, 1004 flow [2024-11-10 22:23:46,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 22:23:46,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 22:23:46,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 413 transitions. [2024-11-10 22:23:46,995 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5673076923076923 [2024-11-10 22:23:46,996 INFO L175 Difference]: Start difference. First operand has 121 places, 138 transitions, 620 flow. Second operand 7 states and 413 transitions. [2024-11-10 22:23:46,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 179 transitions, 1004 flow [2024-11-10 22:23:47,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 179 transitions, 999 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:23:47,077 INFO L231 Difference]: Finished difference. Result has 129 places, 140 transitions, 685 flow [2024-11-10 22:23:47,077 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=617, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=685, PETRI_PLACES=129, PETRI_TRANSITIONS=140} [2024-11-10 22:23:47,077 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, 41 predicate places. [2024-11-10 22:23:47,077 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 140 transitions, 685 flow [2024-11-10 22:23:47,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.166666666666664) internal successors, (289), 6 states have internal predecessors, (289), 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 22:23:47,078 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:47,078 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-10 22:23:47,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 22:23:47,078 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-10 22:23:47,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:47,079 INFO L85 PathProgramCache]: Analyzing trace with hash 15167413, now seen corresponding path program 2 times [2024-11-10 22:23:47,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:47,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852021089] [2024-11-10 22:23:47,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:47,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:47,213 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 22:23:47,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:47,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852021089] [2024-11-10 22:23:47,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852021089] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:23:47,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141946968] [2024-11-10 22:23:47,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:23:47,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:23:47,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:23:47,217 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 22:23:47,219 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 22:23:47,289 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:23:47,289 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:23:47,290 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:23:47,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:23:47,352 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 22:23:47,353 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:23:47,395 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 22:23:47,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141946968] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:23:47,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:23:47,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-10 22:23:47,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401787316] [2024-11-10 22:23:47,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:23:47,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 22:23:47,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:47,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 22:23:47,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-10 22:23:47,445 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 104 [2024-11-10 22:23:47,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 140 transitions, 685 flow. Second operand has 14 states, 14 states have (on average 43.142857142857146) internal successors, (604), 14 states have internal predecessors, (604), 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 22:23:47,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:47,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 104 [2024-11-10 22:23:47,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:57,273 INFO L124 PetriNetUnfolderBase]: 66771/125263 cut-off events. [2024-11-10 22:23:57,273 INFO L125 PetriNetUnfolderBase]: For 24050/24194 co-relation queries the response was YES. [2024-11-10 22:23:58,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241480 conditions, 125263 events. 66771/125263 cut-off events. For 24050/24194 co-relation queries the response was YES. Maximal size of possible extension queue 4161. Compared 1350035 event pairs, 40184 based on Foata normal form. 8/107895 useless extension candidates. Maximal degree in co-relation 241096. Up to 80103 conditions per place. [2024-11-10 22:23:58,638 INFO L140 encePairwiseOnDemand]: 89/104 looper letters, 54 selfloop transitions, 62 changer transitions 0/160 dead transitions. [2024-11-10 22:23:58,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 160 transitions, 1023 flow [2024-11-10 22:23:58,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-10 22:23:58,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-10 22:23:58,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1122 transitions. [2024-11-10 22:23:58,641 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4495192307692308 [2024-11-10 22:23:58,641 INFO L175 Difference]: Start difference. First operand has 129 places, 140 transitions, 685 flow. Second operand 24 states and 1122 transitions. [2024-11-10 22:23:58,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 160 transitions, 1023 flow [2024-11-10 22:23:58,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 160 transitions, 1015 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:23:58,699 INFO L231 Difference]: Finished difference. Result has 152 places, 156 transitions, 926 flow [2024-11-10 22:23:58,700 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=668, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=926, PETRI_PLACES=152, PETRI_TRANSITIONS=156} [2024-11-10 22:23:58,700 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, 64 predicate places. [2024-11-10 22:23:58,700 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 156 transitions, 926 flow [2024-11-10 22:23:58,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 43.142857142857146) internal successors, (604), 14 states have internal predecessors, (604), 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 22:23:58,701 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:58,701 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] [2024-11-10 22:23:58,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-10 22:23:58,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:23:58,902 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-10 22:23:58,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:58,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1948711782, now seen corresponding path program 1 times [2024-11-10 22:23:58,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:58,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307206487] [2024-11-10 22:23:58,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:58,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:58,996 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 22:23:58,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:58,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307206487] [2024-11-10 22:23:58,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307206487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:58,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:58,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:23:58,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503308816] [2024-11-10 22:23:58,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:58,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:23:58,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:58,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:23:58,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:23:59,057 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 104 [2024-11-10 22:23:59,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 156 transitions, 926 flow. Second operand has 5 states, 5 states have (on average 48.6) internal successors, (243), 5 states have internal predecessors, (243), 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 22:23:59,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:59,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 104 [2024-11-10 22:23:59,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand