./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-send-receive.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-send-receive.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 4eda2bf92bccdcc8638b67653fb7fdefc015ff9c815b317ad1009deb61d04585 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:27:42,935 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:27:42,985 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:27:42,989 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:27:42,990 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:27:43,015 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:27:43,016 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:27:43,016 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:27:43,017 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:27:43,017 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:27:43,018 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:27:43,018 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:27:43,018 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:27:43,019 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:27:43,020 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:27:43,020 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:27:43,021 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:27:43,021 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:27:43,021 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:27:43,021 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:27:43,021 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:27:43,022 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:27:43,026 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:27:43,026 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:27:43,026 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:27:43,027 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:27:43,027 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:27:43,027 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:27:43,027 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:27:43,027 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:27:43,027 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:27:43,027 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:27:43,027 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:27:43,028 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:27:43,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:27:43,028 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:27:43,028 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:27:43,028 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:27:43,028 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:27:43,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:27:43,029 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:27:43,029 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:27:43,029 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:27:43,029 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:27:43,029 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4eda2bf92bccdcc8638b67653fb7fdefc015ff9c815b317ad1009deb61d04585 [2024-11-10 22:27:43,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:27:43,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:27:43,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:27:43,271 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:27:43,271 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:27:43,272 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-send-receive.wvr.c [2024-11-10 22:27:44,450 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:27:44,657 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:27:44,657 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-send-receive.wvr.c [2024-11-10 22:27:44,665 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef2307884/9977c968fbb44fbd86809cc966f83eb1/FLAGf1e8e3260 [2024-11-10 22:27:45,024 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef2307884/9977c968fbb44fbd86809cc966f83eb1 [2024-11-10 22:27:45,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:27:45,027 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:27:45,028 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:27:45,028 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:27:45,032 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:27:45,033 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:27:45" (1/1) ... [2024-11-10 22:27:45,033 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7be2fe6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:45, skipping insertion in model container [2024-11-10 22:27:45,033 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:27:45" (1/1) ... [2024-11-10 22:27:45,055 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:27:45,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:27:45,207 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:27:45,231 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:27:45,248 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:27:45,248 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:45 WrapperNode [2024-11-10 22:27:45,248 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:27:45,249 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:27:45,249 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:27:45,249 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:27:45,254 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:45" (1/1) ... [2024-11-10 22:27:45,261 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:45" (1/1) ... [2024-11-10 22:27:45,281 INFO L138 Inliner]: procedures = 24, calls = 38, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 157 [2024-11-10 22:27:45,281 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:27:45,282 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:27:45,282 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:27:45,283 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:27:45,290 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:45" (1/1) ... [2024-11-10 22:27:45,290 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:45" (1/1) ... [2024-11-10 22:27:45,294 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:45" (1/1) ... [2024-11-10 22:27:45,305 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-10 22:27:45,305 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:45" (1/1) ... [2024-11-10 22:27:45,305 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:45" (1/1) ... [2024-11-10 22:27:45,309 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:45" (1/1) ... [2024-11-10 22:27:45,310 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:45" (1/1) ... [2024-11-10 22:27:45,311 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:45" (1/1) ... [2024-11-10 22:27:45,315 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:45" (1/1) ... [2024-11-10 22:27:45,317 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:27:45,318 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:27:45,318 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:27:45,318 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:27:45,318 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:45" (1/1) ... [2024-11-10 22:27:45,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:27:45,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:45,346 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 22:27:45,348 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 22:27:45,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:27:45,384 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 22:27:45,384 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 22:27:45,384 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 22:27:45,385 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 22:27:45,385 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 22:27:45,385 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 22:27:45,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:27:45,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 22:27:45,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 22:27:45,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 22:27:45,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 22:27:45,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 22:27:45,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 22:27:45,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:27:45,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:27:45,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 22:27:45,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 22:27:45,388 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 22:27:45,471 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:27:45,473 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:27:45,682 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:27:45,682 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:27:45,854 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:27:45,854 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:27:45,855 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:27:45 BoogieIcfgContainer [2024-11-10 22:27:45,855 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:27:45,857 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:27:45,858 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:27:45,861 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:27:45,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:27:45" (1/3) ... [2024-11-10 22:27:45,861 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1785bd86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:27:45, skipping insertion in model container [2024-11-10 22:27:45,862 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:45" (2/3) ... [2024-11-10 22:27:45,862 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1785bd86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:27:45, skipping insertion in model container [2024-11-10 22:27:45,862 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:27:45" (3/3) ... [2024-11-10 22:27:45,864 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-send-receive.wvr.c [2024-11-10 22:27:45,876 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:27:45,877 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-10 22:27:45,877 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:27:45,932 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 22:27:45,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 56 transitions, 133 flow [2024-11-10 22:27:45,992 INFO L124 PetriNetUnfolderBase]: 7/53 cut-off events. [2024-11-10 22:27:45,992 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 22:27:45,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 53 events. 7/53 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 132 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2024-11-10 22:27:45,996 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 56 transitions, 133 flow [2024-11-10 22:27:45,999 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 50 transitions, 112 flow [2024-11-10 22:27:46,012 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:27:46,021 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;@32e8519c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:27:46,021 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-10 22:27:46,024 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:27:46,027 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-10 22:27:46,028 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:27:46,028 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:46,028 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 22:27:46,029 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:27:46,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:46,033 INFO L85 PathProgramCache]: Analyzing trace with hash 13337841, now seen corresponding path program 1 times [2024-11-10 22:27:46,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:46,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511628599] [2024-11-10 22:27:46,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:46,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:46,308 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 22:27:46,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:46,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511628599] [2024-11-10 22:27:46,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511628599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:46,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:46,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:27:46,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632096556] [2024-11-10 22:27:46,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:46,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:27:46,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:46,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:27:46,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:27:46,352 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 56 [2024-11-10 22:27:46,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 22:27:46,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:46,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 56 [2024-11-10 22:27:46,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:46,702 INFO L124 PetriNetUnfolderBase]: 1316/2091 cut-off events. [2024-11-10 22:27:46,703 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2024-11-10 22:27:46,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4209 conditions, 2091 events. 1316/2091 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 13235 event pairs, 1114 based on Foata normal form. 144/1604 useless extension candidates. Maximal degree in co-relation 3980. Up to 1926 conditions per place. [2024-11-10 22:27:46,720 INFO L140 encePairwiseOnDemand]: 46/56 looper letters, 32 selfloop transitions, 4 changer transitions 0/49 dead transitions. [2024-11-10 22:27:46,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 49 transitions, 182 flow [2024-11-10 22:27:46,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:27:46,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:27:46,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-11-10 22:27:46,730 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47767857142857145 [2024-11-10 22:27:46,731 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 112 flow. Second operand 4 states and 107 transitions. [2024-11-10 22:27:46,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 49 transitions, 182 flow [2024-11-10 22:27:46,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 176 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 22:27:46,742 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 127 flow [2024-11-10 22:27:46,744 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=127, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2024-11-10 22:27:46,746 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-11-10 22:27:46,748 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 127 flow [2024-11-10 22:27:46,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 22:27:46,748 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:46,748 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-10 22:27:46,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:27:46,749 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:27:46,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:46,750 INFO L85 PathProgramCache]: Analyzing trace with hash -178396386, now seen corresponding path program 1 times [2024-11-10 22:27:46,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:46,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992259359] [2024-11-10 22:27:46,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:46,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:46,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:46,865 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 22:27:46,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:46,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992259359] [2024-11-10 22:27:46,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992259359] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:46,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805263320] [2024-11-10 22:27:46,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:46,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:46,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:46,869 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 22:27:46,870 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 22:27:46,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:46,965 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:27:46,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:47,022 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 22:27:47,022 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:27:47,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805263320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:47,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:27:47,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-10 22:27:47,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232184231] [2024-11-10 22:27:47,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:47,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:27:47,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:47,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:27:47,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:27:47,038 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 56 [2024-11-10 22:27:47,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 127 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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 22:27:47,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:47,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 56 [2024-11-10 22:27:47,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:47,254 INFO L124 PetriNetUnfolderBase]: 1316/2090 cut-off events. [2024-11-10 22:27:47,254 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-10 22:27:47,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4187 conditions, 2090 events. 1316/2090 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 13134 event pairs, 1114 based on Foata normal form. 1/1460 useless extension candidates. Maximal degree in co-relation 4158. Up to 1921 conditions per place. [2024-11-10 22:27:47,265 INFO L140 encePairwiseOnDemand]: 51/56 looper letters, 28 selfloop transitions, 7 changer transitions 0/48 dead transitions. [2024-11-10 22:27:47,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 48 transitions, 193 flow [2024-11-10 22:27:47,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:27:47,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:27:47,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-11-10 22:27:47,268 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-11-10 22:27:47,268 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 127 flow. Second operand 6 states and 132 transitions. [2024-11-10 22:27:47,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 48 transitions, 193 flow [2024-11-10 22:27:47,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 48 transitions, 190 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:27:47,269 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 134 flow [2024-11-10 22:27:47,270 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=134, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-11-10 22:27:47,271 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2024-11-10 22:27:47,271 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 134 flow [2024-11-10 22:27:47,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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 22:27:47,272 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:47,272 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-10 22:27:47,285 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 22:27:47,472 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 22:27:47,478 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:27:47,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:47,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1235320296, now seen corresponding path program 1 times [2024-11-10 22:27:47,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:47,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049876770] [2024-11-10 22:27:47,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:47,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:47,578 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 22:27:47,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:47,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049876770] [2024-11-10 22:27:47,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049876770] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:47,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082346221] [2024-11-10 22:27:47,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:47,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:47,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:47,580 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 22:27:47,581 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 22:27:47,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:47,635 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:27:47,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:47,660 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 22:27:47,660 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:27:47,698 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 22:27:47,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082346221] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:27:47,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:27:47,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-10 22:27:47,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528573988] [2024-11-10 22:27:47,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:27:47,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:27:47,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:47,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:27:47,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:27:47,716 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 56 [2024-11-10 22:27:47,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 134 flow. Second operand has 12 states, 12 states have (on average 17.083333333333332) internal successors, (205), 12 states have internal predecessors, (205), 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 22:27:47,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:47,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 56 [2024-11-10 22:27:47,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:47,930 INFO L124 PetriNetUnfolderBase]: 1319/2108 cut-off events. [2024-11-10 22:27:47,930 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2024-11-10 22:27:47,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4237 conditions, 2108 events. 1319/2108 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 13421 event pairs, 1114 based on Foata normal form. 3/1481 useless extension candidates. Maximal degree in co-relation 4159. Up to 1928 conditions per place. [2024-11-10 22:27:47,939 INFO L140 encePairwiseOnDemand]: 51/56 looper letters, 31 selfloop transitions, 13 changer transitions 0/57 dead transitions. [2024-11-10 22:27:47,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 57 transitions, 276 flow [2024-11-10 22:27:47,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:27:47,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:27:47,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 207 transitions. [2024-11-10 22:27:47,944 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36964285714285716 [2024-11-10 22:27:47,944 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 134 flow. Second operand 10 states and 207 transitions. [2024-11-10 22:27:47,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 57 transitions, 276 flow [2024-11-10 22:27:47,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 57 transitions, 246 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-10 22:27:47,948 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 202 flow [2024-11-10 22:27:47,948 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=202, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2024-11-10 22:27:47,948 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 11 predicate places. [2024-11-10 22:27:47,949 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 202 flow [2024-11-10 22:27:47,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.083333333333332) internal successors, (205), 12 states have internal predecessors, (205), 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 22:27:47,949 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:47,950 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:47,962 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 22:27:48,150 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 22:27:48,151 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:27:48,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:48,151 INFO L85 PathProgramCache]: Analyzing trace with hash 309294264, now seen corresponding path program 1 times [2024-11-10 22:27:48,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:48,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687154920] [2024-11-10 22:27:48,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:48,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:48,200 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 22:27:48,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:48,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687154920] [2024-11-10 22:27:48,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687154920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:48,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:48,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 22:27:48,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471123195] [2024-11-10 22:27:48,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:48,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:27:48,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:48,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:27:48,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:27:48,202 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 56 [2024-11-10 22:27:48,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 22:27:48,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:48,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 56 [2024-11-10 22:27:48,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:48,381 INFO L124 PetriNetUnfolderBase]: 1520/2461 cut-off events. [2024-11-10 22:27:48,382 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2024-11-10 22:27:48,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4932 conditions, 2461 events. 1520/2461 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 13922 event pairs, 634 based on Foata normal form. 72/1913 useless extension candidates. Maximal degree in co-relation 4894. Up to 1578 conditions per place. [2024-11-10 22:27:48,391 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 55 selfloop transitions, 3 changer transitions 1/73 dead transitions. [2024-11-10 22:27:48,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 73 transitions, 355 flow [2024-11-10 22:27:48,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:27:48,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:27:48,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-11-10 22:27:48,392 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-10 22:27:48,392 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 202 flow. Second operand 3 states and 105 transitions. [2024-11-10 22:27:48,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 73 transitions, 355 flow [2024-11-10 22:27:48,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 73 transitions, 344 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-10 22:27:48,396 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 216 flow [2024-11-10 22:27:48,396 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2024-11-10 22:27:48,397 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 12 predicate places. [2024-11-10 22:27:48,397 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 216 flow [2024-11-10 22:27:48,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 22:27:48,398 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:48,398 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:48,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 22:27:48,398 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:27:48,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:48,399 INFO L85 PathProgramCache]: Analyzing trace with hash 190698457, now seen corresponding path program 1 times [2024-11-10 22:27:48,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:48,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376985432] [2024-11-10 22:27:48,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:48,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:48,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:48,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:48,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376985432] [2024-11-10 22:27:48,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376985432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:48,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:48,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 22:27:48,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398807095] [2024-11-10 22:27:48,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:48,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:27:48,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:48,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:27:48,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:27:48,478 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 56 [2024-11-10 22:27:48,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 22:27:48,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:48,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 56 [2024-11-10 22:27:48,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:48,596 INFO L124 PetriNetUnfolderBase]: 1176/1870 cut-off events. [2024-11-10 22:27:48,596 INFO L125 PetriNetUnfolderBase]: For 224/224 co-relation queries the response was YES. [2024-11-10 22:27:48,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4201 conditions, 1870 events. 1176/1870 cut-off events. For 224/224 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 9965 event pairs, 978 based on Foata normal form. 0/1574 useless extension candidates. Maximal degree in co-relation 4162. Up to 1736 conditions per place. [2024-11-10 22:27:48,604 INFO L140 encePairwiseOnDemand]: 53/56 looper letters, 42 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2024-11-10 22:27:48,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 57 transitions, 298 flow [2024-11-10 22:27:48,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:27:48,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:27:48,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-11-10 22:27:48,605 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-11-10 22:27:48,605 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 216 flow. Second operand 3 states and 85 transitions. [2024-11-10 22:27:48,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 57 transitions, 298 flow [2024-11-10 22:27:48,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 57 transitions, 295 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:27:48,608 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 211 flow [2024-11-10 22:27:48,608 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=211, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2024-11-10 22:27:48,609 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 11 predicate places. [2024-11-10 22:27:48,610 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 211 flow [2024-11-10 22:27:48,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 22:27:48,610 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:48,610 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:48,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 22:27:48,610 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:27:48,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:48,610 INFO L85 PathProgramCache]: Analyzing trace with hash 190698458, now seen corresponding path program 1 times [2024-11-10 22:27:48,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:48,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011641016] [2024-11-10 22:27:48,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:48,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:48,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:48,670 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 22:27:48,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:48,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011641016] [2024-11-10 22:27:48,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011641016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:48,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:48,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:27:48,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101652184] [2024-11-10 22:27:48,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:48,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:27:48,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:48,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:27:48,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:27:48,673 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 56 [2024-11-10 22:27:48,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 211 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 22:27:48,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:48,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 56 [2024-11-10 22:27:48,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:48,851 INFO L124 PetriNetUnfolderBase]: 1345/2188 cut-off events. [2024-11-10 22:27:48,851 INFO L125 PetriNetUnfolderBase]: For 219/219 co-relation queries the response was YES. [2024-11-10 22:27:48,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4786 conditions, 2188 events. 1345/2188 cut-off events. For 219/219 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 12001 event pairs, 1148 based on Foata normal form. 21/1919 useless extension candidates. Maximal degree in co-relation 4772. Up to 1738 conditions per place. [2024-11-10 22:27:48,859 INFO L140 encePairwiseOnDemand]: 51/56 looper letters, 41 selfloop transitions, 2 changer transitions 16/72 dead transitions. [2024-11-10 22:27:48,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 72 transitions, 365 flow [2024-11-10 22:27:48,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:27:48,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:27:48,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-11-10 22:27:48,860 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4785714285714286 [2024-11-10 22:27:48,860 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 211 flow. Second operand 5 states and 134 transitions. [2024-11-10 22:27:48,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 72 transitions, 365 flow [2024-11-10 22:27:48,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 72 transitions, 364 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:27:48,862 INFO L231 Difference]: Finished difference. Result has 69 places, 56 transitions, 216 flow [2024-11-10 22:27:48,862 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=216, PETRI_PLACES=69, PETRI_TRANSITIONS=56} [2024-11-10 22:27:48,862 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 16 predicate places. [2024-11-10 22:27:48,862 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 56 transitions, 216 flow [2024-11-10 22:27:48,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 22:27:48,863 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:48,863 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:48,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 22:27:48,863 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:27:48,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:48,864 INFO L85 PathProgramCache]: Analyzing trace with hash 58595405, now seen corresponding path program 1 times [2024-11-10 22:27:48,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:48,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130262325] [2024-11-10 22:27:48,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:48,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:48,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:48,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:48,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130262325] [2024-11-10 22:27:48,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130262325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:48,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866517449] [2024-11-10 22:27:48,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:48,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:48,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:48,986 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 22:27:48,986 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 22:27:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:49,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:27:49,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:49,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:27:49,082 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:27:49,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866517449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:49,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:27:49,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2024-11-10 22:27:49,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685042682] [2024-11-10 22:27:49,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:49,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:27:49,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:49,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:27:49,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-10 22:27:49,083 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 56 [2024-11-10 22:27:49,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 56 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 22:27:49,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:49,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 56 [2024-11-10 22:27:49,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:49,208 INFO L124 PetriNetUnfolderBase]: 755/1352 cut-off events. [2024-11-10 22:27:49,208 INFO L125 PetriNetUnfolderBase]: For 335/335 co-relation queries the response was YES. [2024-11-10 22:27:49,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2931 conditions, 1352 events. 755/1352 cut-off events. For 335/335 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7487 event pairs, 443 based on Foata normal form. 156/1310 useless extension candidates. Maximal degree in co-relation 2914. Up to 878 conditions per place. [2024-11-10 22:27:49,212 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 41 selfloop transitions, 6 changer transitions 4/65 dead transitions. [2024-11-10 22:27:49,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 65 transitions, 343 flow [2024-11-10 22:27:49,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:27:49,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:27:49,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2024-11-10 22:27:49,213 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5089285714285714 [2024-11-10 22:27:49,213 INFO L175 Difference]: Start difference. First operand has 69 places, 56 transitions, 216 flow. Second operand 4 states and 114 transitions. [2024-11-10 22:27:49,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 65 transitions, 343 flow [2024-11-10 22:27:49,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 65 transitions, 337 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-10 22:27:49,214 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 209 flow [2024-11-10 22:27:49,214 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=64, PETRI_TRANSITIONS=51} [2024-11-10 22:27:49,215 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 11 predicate places. [2024-11-10 22:27:49,215 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 209 flow [2024-11-10 22:27:49,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 22:27:49,215 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:49,215 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-10 22:27:49,231 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 22:27:49,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:49,419 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:27:49,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:49,420 INFO L85 PathProgramCache]: Analyzing trace with hash 640946033, now seen corresponding path program 2 times [2024-11-10 22:27:49,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:49,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395526011] [2024-11-10 22:27:49,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:49,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:49,535 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 22:27:49,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:49,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395526011] [2024-11-10 22:27:49,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395526011] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:49,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606733596] [2024-11-10 22:27:49,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:27:49,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:49,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:49,538 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:27:49,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 22:27:49,584 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:27:49,584 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:27:49,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:27:49,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:49,627 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 22:27:49,627 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:27:49,662 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 22:27:49,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606733596] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:27:49,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:27:49,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-10 22:27:49,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813327122] [2024-11-10 22:27:49,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:27:49,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 22:27:49,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:49,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 22:27:49,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-10 22:27:49,686 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 56 [2024-11-10 22:27:49,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 209 flow. Second operand has 14 states, 14 states have (on average 16.142857142857142) internal successors, (226), 14 states have internal predecessors, (226), 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 22:27:49,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:49,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 56 [2024-11-10 22:27:49,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:49,927 INFO L124 PetriNetUnfolderBase]: 534/888 cut-off events. [2024-11-10 22:27:49,927 INFO L125 PetriNetUnfolderBase]: For 403/403 co-relation queries the response was YES. [2024-11-10 22:27:49,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2179 conditions, 888 events. 534/888 cut-off events. For 403/403 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3906 event pairs, 401 based on Foata normal form. 2/752 useless extension candidates. Maximal degree in co-relation 2163. Up to 779 conditions per place. [2024-11-10 22:27:49,933 INFO L140 encePairwiseOnDemand]: 51/56 looper letters, 27 selfloop transitions, 18 changer transitions 0/57 dead transitions. [2024-11-10 22:27:49,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 57 transitions, 324 flow [2024-11-10 22:27:49,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 22:27:49,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-10 22:27:49,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 255 transitions. [2024-11-10 22:27:49,936 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3252551020408163 [2024-11-10 22:27:49,936 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 209 flow. Second operand 14 states and 255 transitions. [2024-11-10 22:27:49,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 57 transitions, 324 flow [2024-11-10 22:27:49,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 57 transitions, 300 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-11-10 22:27:49,938 INFO L231 Difference]: Finished difference. Result has 67 places, 53 transitions, 230 flow [2024-11-10 22:27:49,938 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=230, PETRI_PLACES=67, PETRI_TRANSITIONS=53} [2024-11-10 22:27:49,938 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 14 predicate places. [2024-11-10 22:27:49,939 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 53 transitions, 230 flow [2024-11-10 22:27:49,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.142857142857142) internal successors, (226), 14 states have internal predecessors, (226), 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 22:27:49,939 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:49,939 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:49,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 22:27:50,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:50,145 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:27:50,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:50,145 INFO L85 PathProgramCache]: Analyzing trace with hash 777800597, now seen corresponding path program 1 times [2024-11-10 22:27:50,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:50,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493121282] [2024-11-10 22:27:50,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:50,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:50,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:50,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:50,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493121282] [2024-11-10 22:27:50,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493121282] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:50,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018398844] [2024-11-10 22:27:50,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:50,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:50,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:50,521 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:27:50,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 22:27:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:50,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-10 22:27:50,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:50,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-10 22:27:51,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:51,018 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:27:51,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2024-11-10 22:27:51,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2024-11-10 22:27:51,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:51,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018398844] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:27:51,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:27:51,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 19 [2024-11-10 22:27:51,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163068019] [2024-11-10 22:27:51,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:27:51,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-10 22:27:51,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:51,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-10 22:27:51,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2024-11-10 22:27:51,340 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 56 [2024-11-10 22:27:51,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 53 transitions, 230 flow. Second operand has 21 states, 21 states have (on average 17.0) internal successors, (357), 21 states have internal predecessors, (357), 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 22:27:51,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:51,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 56 [2024-11-10 22:27:51,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:53,024 INFO L124 PetriNetUnfolderBase]: 2594/5046 cut-off events. [2024-11-10 22:27:53,024 INFO L125 PetriNetUnfolderBase]: For 906/906 co-relation queries the response was YES. [2024-11-10 22:27:53,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10264 conditions, 5046 events. 2594/5046 cut-off events. For 906/906 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 35996 event pairs, 503 based on Foata normal form. 96/4642 useless extension candidates. Maximal degree in co-relation 10252. Up to 1017 conditions per place. [2024-11-10 22:27:53,044 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 171 selfloop transitions, 42 changer transitions 5/230 dead transitions. [2024-11-10 22:27:53,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 230 transitions, 1132 flow [2024-11-10 22:27:53,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-10 22:27:53,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-10 22:27:53,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 610 transitions. [2024-11-10 22:27:53,047 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857 [2024-11-10 22:27:53,047 INFO L175 Difference]: Start difference. First operand has 67 places, 53 transitions, 230 flow. Second operand 25 states and 610 transitions. [2024-11-10 22:27:53,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 230 transitions, 1132 flow [2024-11-10 22:27:53,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 230 transitions, 1064 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-11-10 22:27:53,050 INFO L231 Difference]: Finished difference. Result has 96 places, 85 transitions, 510 flow [2024-11-10 22:27:53,051 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=510, PETRI_PLACES=96, PETRI_TRANSITIONS=85} [2024-11-10 22:27:53,052 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 43 predicate places. [2024-11-10 22:27:53,052 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 85 transitions, 510 flow [2024-11-10 22:27:53,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 17.0) internal successors, (357), 21 states have internal predecessors, (357), 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 22:27:53,053 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:53,053 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:53,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 22:27:53,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:53,258 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:27:53,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:53,258 INFO L85 PathProgramCache]: Analyzing trace with hash -826147148, now seen corresponding path program 1 times [2024-11-10 22:27:53,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:53,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215356369] [2024-11-10 22:27:53,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:53,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:53,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:27:53,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:53,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215356369] [2024-11-10 22:27:53,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215356369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:53,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:53,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:27:53,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412240897] [2024-11-10 22:27:53,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:53,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:27:53,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:53,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:27:53,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:27:53,300 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 56 [2024-11-10 22:27:53,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 85 transitions, 510 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 22:27:53,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:53,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 56 [2024-11-10 22:27:53,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:53,611 INFO L124 PetriNetUnfolderBase]: 2539/4396 cut-off events. [2024-11-10 22:27:53,611 INFO L125 PetriNetUnfolderBase]: For 15380/15380 co-relation queries the response was YES. [2024-11-10 22:27:53,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12936 conditions, 4396 events. 2539/4396 cut-off events. For 15380/15380 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 28056 event pairs, 1127 based on Foata normal form. 48/4410 useless extension candidates. Maximal degree in co-relation 12908. Up to 3036 conditions per place. [2024-11-10 22:27:53,627 INFO L140 encePairwiseOnDemand]: 53/56 looper letters, 74 selfloop transitions, 2 changer transitions 1/90 dead transitions. [2024-11-10 22:27:53,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 90 transitions, 698 flow [2024-11-10 22:27:53,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:27:53,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:27:53,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-11-10 22:27:53,628 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5297619047619048 [2024-11-10 22:27:53,629 INFO L175 Difference]: Start difference. First operand has 96 places, 85 transitions, 510 flow. Second operand 3 states and 89 transitions. [2024-11-10 22:27:53,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 90 transitions, 698 flow [2024-11-10 22:27:53,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 90 transitions, 637 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-11-10 22:27:53,652 INFO L231 Difference]: Finished difference. Result has 86 places, 75 transitions, 393 flow [2024-11-10 22:27:53,652 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=393, PETRI_PLACES=86, PETRI_TRANSITIONS=75} [2024-11-10 22:27:53,653 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 33 predicate places. [2024-11-10 22:27:53,653 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 75 transitions, 393 flow [2024-11-10 22:27:53,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 22:27:53,653 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:53,653 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:53,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 22:27:53,653 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:27:53,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:53,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1723443069, now seen corresponding path program 1 times [2024-11-10 22:27:53,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:53,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105525784] [2024-11-10 22:27:53,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:53,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:53,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:54,050 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:54,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:54,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105525784] [2024-11-10 22:27:54,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105525784] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:54,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657609843] [2024-11-10 22:27:54,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:54,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:54,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:54,054 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:27:54,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 22:27:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:54,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 22:27:54,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:54,192 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:27:54,192 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:27:54,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657609843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:54,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:27:54,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 10 [2024-11-10 22:27:54,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112110729] [2024-11-10 22:27:54,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:54,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:27:54,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:54,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:27:54,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:27:54,194 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 56 [2024-11-10 22:27:54,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 75 transitions, 393 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:54,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:54,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 56 [2024-11-10 22:27:54,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:54,512 INFO L124 PetriNetUnfolderBase]: 2055/3945 cut-off events. [2024-11-10 22:27:54,512 INFO L125 PetriNetUnfolderBase]: For 10737/10737 co-relation queries the response was YES. [2024-11-10 22:27:54,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10908 conditions, 3945 events. 2055/3945 cut-off events. For 10737/10737 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 27183 event pairs, 455 based on Foata normal form. 80/3931 useless extension candidates. Maximal degree in co-relation 10884. Up to 1285 conditions per place. [2024-11-10 22:27:54,533 INFO L140 encePairwiseOnDemand]: 52/56 looper letters, 70 selfloop transitions, 8 changer transitions 1/95 dead transitions. [2024-11-10 22:27:54,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 95 transitions, 631 flow [2024-11-10 22:27:54,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:27:54,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:27:54,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2024-11-10 22:27:54,535 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2024-11-10 22:27:54,535 INFO L175 Difference]: Start difference. First operand has 86 places, 75 transitions, 393 flow. Second operand 4 states and 118 transitions. [2024-11-10 22:27:54,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 95 transitions, 631 flow [2024-11-10 22:27:54,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 95 transitions, 616 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:27:54,546 INFO L231 Difference]: Finished difference. Result has 88 places, 75 transitions, 389 flow [2024-11-10 22:27:54,547 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=389, PETRI_PLACES=88, PETRI_TRANSITIONS=75} [2024-11-10 22:27:54,547 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 35 predicate places. [2024-11-10 22:27:54,547 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 75 transitions, 389 flow [2024-11-10 22:27:54,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:54,548 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:54,548 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:54,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 22:27:54,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:54,749 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:27:54,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:54,749 INFO L85 PathProgramCache]: Analyzing trace with hash 877666991, now seen corresponding path program 2 times [2024-11-10 22:27:54,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:54,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338137706] [2024-11-10 22:27:54,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:54,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:55,325 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:55,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:55,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338137706] [2024-11-10 22:27:55,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338137706] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:55,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670066712] [2024-11-10 22:27:55,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:27:55,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:55,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:55,328 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:27:55,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 22:27:55,385 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:27:55,386 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:27:55,386 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 22:27:55,387 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:55,479 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 22:27:55,480 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:27:55,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670066712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:55,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:27:55,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [10] total 12 [2024-11-10 22:27:55,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827484805] [2024-11-10 22:27:55,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:55,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:27:55,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:55,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:27:55,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-11-10 22:27:55,483 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 56 [2024-11-10 22:27:55,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 75 transitions, 389 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:55,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:55,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 56 [2024-11-10 22:27:55,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:55,732 INFO L124 PetriNetUnfolderBase]: 1970/3838 cut-off events. [2024-11-10 22:27:55,732 INFO L125 PetriNetUnfolderBase]: For 9211/9211 co-relation queries the response was YES. [2024-11-10 22:27:55,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10560 conditions, 3838 events. 1970/3838 cut-off events. For 9211/9211 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 26353 event pairs, 423 based on Foata normal form. 40/3748 useless extension candidates. Maximal degree in co-relation 10535. Up to 1285 conditions per place. [2024-11-10 22:27:55,751 INFO L140 encePairwiseOnDemand]: 52/56 looper letters, 69 selfloop transitions, 8 changer transitions 1/94 dead transitions. [2024-11-10 22:27:55,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 94 transitions, 619 flow [2024-11-10 22:27:55,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:27:55,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:27:55,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-11-10 22:27:55,752 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5223214285714286 [2024-11-10 22:27:55,752 INFO L175 Difference]: Start difference. First operand has 88 places, 75 transitions, 389 flow. Second operand 4 states and 117 transitions. [2024-11-10 22:27:55,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 94 transitions, 619 flow [2024-11-10 22:27:55,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 94 transitions, 610 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:27:55,762 INFO L231 Difference]: Finished difference. Result has 90 places, 75 transitions, 405 flow [2024-11-10 22:27:55,763 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=405, PETRI_PLACES=90, PETRI_TRANSITIONS=75} [2024-11-10 22:27:55,764 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 37 predicate places. [2024-11-10 22:27:55,764 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 75 transitions, 405 flow [2024-11-10 22:27:55,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:55,765 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:55,765 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:55,778 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 22:27:55,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:55,966 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:27:55,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:55,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1719896606, now seen corresponding path program 1 times [2024-11-10 22:27:55,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:55,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610636697] [2024-11-10 22:27:55,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:55,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:55,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:56,015 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:27:56,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:56,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610636697] [2024-11-10 22:27:56,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610636697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:56,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:56,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:27:56,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893798958] [2024-11-10 22:27:56,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:56,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:27:56,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:56,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:27:56,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:27:56,017 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 56 [2024-11-10 22:27:56,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 75 transitions, 405 flow. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 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 22:27:56,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:56,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 56 [2024-11-10 22:27:56,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:56,371 INFO L124 PetriNetUnfolderBase]: 2860/5640 cut-off events. [2024-11-10 22:27:56,371 INFO L125 PetriNetUnfolderBase]: For 16395/16395 co-relation queries the response was YES. [2024-11-10 22:27:56,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16081 conditions, 5640 events. 2860/5640 cut-off events. For 16395/16395 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 41439 event pairs, 689 based on Foata normal form. 120/5598 useless extension candidates. Maximal degree in co-relation 16055. Up to 1905 conditions per place. [2024-11-10 22:27:56,399 INFO L140 encePairwiseOnDemand]: 50/56 looper letters, 73 selfloop transitions, 18 changer transitions 1/108 dead transitions. [2024-11-10 22:27:56,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 108 transitions, 772 flow [2024-11-10 22:27:56,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:27:56,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:27:56,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-11-10 22:27:56,400 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-11-10 22:27:56,400 INFO L175 Difference]: Start difference. First operand has 90 places, 75 transitions, 405 flow. Second operand 4 states and 126 transitions. [2024-11-10 22:27:56,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 108 transitions, 772 flow [2024-11-10 22:27:56,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 108 transitions, 745 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-10 22:27:56,417 INFO L231 Difference]: Finished difference. Result has 91 places, 86 transitions, 559 flow [2024-11-10 22:27:56,417 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=559, PETRI_PLACES=91, PETRI_TRANSITIONS=86} [2024-11-10 22:27:56,421 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 38 predicate places. [2024-11-10 22:27:56,421 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 86 transitions, 559 flow [2024-11-10 22:27:56,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 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 22:27:56,421 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:56,421 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:56,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-10 22:27:56,422 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:27:56,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:56,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1465557175, now seen corresponding path program 1 times [2024-11-10 22:27:56,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:56,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612775028] [2024-11-10 22:27:56,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:56,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:56,528 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:27:56,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:56,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612775028] [2024-11-10 22:27:56,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612775028] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:56,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333507963] [2024-11-10 22:27:56,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:56,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:56,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:56,530 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:27:56,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 22:27:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:56,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 22:27:56,590 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:56,665 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:27:56,666 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:27:56,759 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 22:27:56,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333507963] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:27:56,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:27:56,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-11-10 22:27:56,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024637384] [2024-11-10 22:27:56,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:27:56,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-10 22:27:56,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:56,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-10 22:27:56,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-11-10 22:27:56,779 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 56 [2024-11-10 22:27:56,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 86 transitions, 559 flow. Second operand has 18 states, 18 states have (on average 16.944444444444443) internal successors, (305), 18 states have internal predecessors, (305), 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 22:27:56,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:56,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 56 [2024-11-10 22:27:56,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:57,123 INFO L124 PetriNetUnfolderBase]: 1912/3564 cut-off events. [2024-11-10 22:27:57,123 INFO L125 PetriNetUnfolderBase]: For 12593/12593 co-relation queries the response was YES. [2024-11-10 22:27:57,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11359 conditions, 3564 events. 1912/3564 cut-off events. For 12593/12593 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 22741 event pairs, 1375 based on Foata normal form. 32/3401 useless extension candidates. Maximal degree in co-relation 11332. Up to 2402 conditions per place. [2024-11-10 22:27:57,138 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 40 selfloop transitions, 12 changer transitions 32/97 dead transitions. [2024-11-10 22:27:57,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 97 transitions, 660 flow [2024-11-10 22:27:57,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:27:57,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:27:57,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 212 transitions. [2024-11-10 22:27:57,140 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37857142857142856 [2024-11-10 22:27:57,140 INFO L175 Difference]: Start difference. First operand has 91 places, 86 transitions, 559 flow. Second operand 10 states and 212 transitions. [2024-11-10 22:27:57,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 97 transitions, 660 flow [2024-11-10 22:27:57,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 97 transitions, 632 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-11-10 22:27:57,161 INFO L231 Difference]: Finished difference. Result has 89 places, 65 transitions, 380 flow [2024-11-10 22:27:57,161 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=380, PETRI_PLACES=89, PETRI_TRANSITIONS=65} [2024-11-10 22:27:57,161 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 36 predicate places. [2024-11-10 22:27:57,161 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 65 transitions, 380 flow [2024-11-10 22:27:57,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 16.944444444444443) internal successors, (305), 18 states have internal predecessors, (305), 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 22:27:57,162 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:57,162 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:57,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-10 22:27:57,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-10 22:27:57,365 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:27:57,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:57,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1295126263, now seen corresponding path program 1 times [2024-11-10 22:27:57,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:57,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042867929] [2024-11-10 22:27:57,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:57,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:57,437 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:27:57,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:57,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042867929] [2024-11-10 22:27:57,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042867929] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:57,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:57,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:27:57,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987405185] [2024-11-10 22:27:57,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:57,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:27:57,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:57,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:27:57,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:27:57,441 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 56 [2024-11-10 22:27:57,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 65 transitions, 380 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 22:27:57,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:57,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 56 [2024-11-10 22:27:57,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:57,860 INFO L124 PetriNetUnfolderBase]: 3515/5957 cut-off events. [2024-11-10 22:27:57,860 INFO L125 PetriNetUnfolderBase]: For 15545/15545 co-relation queries the response was YES. [2024-11-10 22:27:57,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18782 conditions, 5957 events. 3515/5957 cut-off events. For 15545/15545 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 37813 event pairs, 770 based on Foata normal form. 256/6097 useless extension candidates. Maximal degree in co-relation 18758. Up to 2600 conditions per place. [2024-11-10 22:27:57,889 INFO L140 encePairwiseOnDemand]: 52/56 looper letters, 75 selfloop transitions, 4 changer transitions 0/90 dead transitions. [2024-11-10 22:27:57,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 90 transitions, 685 flow [2024-11-10 22:27:57,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:27:57,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:27:57,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-11-10 22:27:57,890 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48660714285714285 [2024-11-10 22:27:57,890 INFO L175 Difference]: Start difference. First operand has 89 places, 65 transitions, 380 flow. Second operand 4 states and 109 transitions. [2024-11-10 22:27:57,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 90 transitions, 685 flow [2024-11-10 22:27:57,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 90 transitions, 647 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-11-10 22:27:57,897 INFO L231 Difference]: Finished difference. Result has 77 places, 66 transitions, 371 flow [2024-11-10 22:27:57,897 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=371, PETRI_PLACES=77, PETRI_TRANSITIONS=66} [2024-11-10 22:27:57,898 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 24 predicate places. [2024-11-10 22:27:57,898 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 66 transitions, 371 flow [2024-11-10 22:27:57,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 22:27:57,898 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:57,898 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:57,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-10 22:27:57,898 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:27:57,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:57,899 INFO L85 PathProgramCache]: Analyzing trace with hash -135961707, now seen corresponding path program 1 times [2024-11-10 22:27:57,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:57,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703536446] [2024-11-10 22:27:57,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:57,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:57,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:58,336 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:58,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:58,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703536446] [2024-11-10 22:27:58,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703536446] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:58,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047210745] [2024-11-10 22:27:58,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:58,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:58,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:58,338 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:27:58,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 22:27:58,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:58,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-10 22:27:58,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:58,862 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:58,862 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:27:59,034 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:27:59,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 53 [2024-11-10 22:27:59,410 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:59,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047210745] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:27:59,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:27:59,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 34 [2024-11-10 22:27:59,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457015766] [2024-11-10 22:27:59,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:27:59,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-10 22:27:59,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:59,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-10 22:27:59,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1026, Unknown=0, NotChecked=0, Total=1260 [2024-11-10 22:27:59,461 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 56 [2024-11-10 22:27:59,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 66 transitions, 371 flow. Second operand has 36 states, 36 states have (on average 16.75) internal successors, (603), 36 states have internal predecessors, (603), 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 22:27:59,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:59,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 56 [2024-11-10 22:27:59,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:02,704 INFO L124 PetriNetUnfolderBase]: 9776/18990 cut-off events. [2024-11-10 22:28:02,704 INFO L125 PetriNetUnfolderBase]: For 51155/51155 co-relation queries the response was YES. [2024-11-10 22:28:02,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57525 conditions, 18990 events. 9776/18990 cut-off events. For 51155/51155 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 160871 event pairs, 736 based on Foata normal form. 400/18855 useless extension candidates. Maximal degree in co-relation 57503. Up to 4065 conditions per place. [2024-11-10 22:28:02,781 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 340 selfloop transitions, 132 changer transitions 4/490 dead transitions. [2024-11-10 22:28:02,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 490 transitions, 3313 flow [2024-11-10 22:28:02,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-10 22:28:02,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-11-10 22:28:02,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 1096 transitions. [2024-11-10 22:28:02,784 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4448051948051948 [2024-11-10 22:28:02,784 INFO L175 Difference]: Start difference. First operand has 77 places, 66 transitions, 371 flow. Second operand 44 states and 1096 transitions. [2024-11-10 22:28:02,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 490 transitions, 3313 flow [2024-11-10 22:28:02,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 490 transitions, 3307 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-10 22:28:02,805 INFO L231 Difference]: Finished difference. Result has 130 places, 207 transitions, 2083 flow [2024-11-10 22:28:02,805 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2083, PETRI_PLACES=130, PETRI_TRANSITIONS=207} [2024-11-10 22:28:02,806 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 77 predicate places. [2024-11-10 22:28:02,806 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 207 transitions, 2083 flow [2024-11-10 22:28:02,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 16.75) internal successors, (603), 36 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:02,807 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:02,807 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:02,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-10 22:28:03,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-10 22:28:03,011 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:28:03,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:03,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1277955796, now seen corresponding path program 1 times [2024-11-10 22:28:03,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:03,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199631612] [2024-11-10 22:28:03,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:03,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:03,652 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:03,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:03,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199631612] [2024-11-10 22:28:03,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199631612] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:03,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667429362] [2024-11-10 22:28:03,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:03,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:03,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:03,655 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:28:03,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 22:28:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:03,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-10 22:28:03,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:04,197 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:04,197 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:04,386 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:28:04,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 54 [2024-11-10 22:28:04,760 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:04,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667429362] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:04,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:04,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 34 [2024-11-10 22:28:04,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44382589] [2024-11-10 22:28:04,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:04,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-10 22:28:04,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:04,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-10 22:28:04,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1055, Unknown=0, NotChecked=0, Total=1260 [2024-11-10 22:28:04,819 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 56 [2024-11-10 22:28:04,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 207 transitions, 2083 flow. Second operand has 36 states, 36 states have (on average 16.75) internal successors, (603), 36 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:04,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:04,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 56 [2024-11-10 22:28:04,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:08,716 INFO L124 PetriNetUnfolderBase]: 12398/24618 cut-off events. [2024-11-10 22:28:08,716 INFO L125 PetriNetUnfolderBase]: For 171664/171664 co-relation queries the response was YES. [2024-11-10 22:28:08,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90244 conditions, 24618 events. 12398/24618 cut-off events. For 171664/171664 co-relation queries the response was YES. Maximal size of possible extension queue 747. Compared 221114 event pairs, 1448 based on Foata normal form. 224/23847 useless extension candidates. Maximal degree in co-relation 90210. Up to 8475 conditions per place. [2024-11-10 22:28:08,885 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 372 selfloop transitions, 120 changer transitions 6/512 dead transitions. [2024-11-10 22:28:08,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 512 transitions, 4967 flow [2024-11-10 22:28:08,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-10 22:28:08,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-10 22:28:08,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 797 transitions. [2024-11-10 22:28:08,887 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43127705627705626 [2024-11-10 22:28:08,887 INFO L175 Difference]: Start difference. First operand has 130 places, 207 transitions, 2083 flow. Second operand 33 states and 797 transitions. [2024-11-10 22:28:08,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 512 transitions, 4967 flow [2024-11-10 22:28:08,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 512 transitions, 4080 flow, removed 433 selfloop flow, removed 7 redundant places. [2024-11-10 22:28:08,983 INFO L231 Difference]: Finished difference. Result has 170 places, 275 transitions, 2699 flow [2024-11-10 22:28:08,983 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=1408, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2699, PETRI_PLACES=170, PETRI_TRANSITIONS=275} [2024-11-10 22:28:08,984 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 117 predicate places. [2024-11-10 22:28:08,984 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 275 transitions, 2699 flow [2024-11-10 22:28:08,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 16.75) internal successors, (603), 36 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:08,984 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:08,984 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:08,997 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-10 22:28:09,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-10 22:28:09,185 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:28:09,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:09,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1393679765, now seen corresponding path program 2 times [2024-11-10 22:28:09,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:09,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493236234] [2024-11-10 22:28:09,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:09,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:09,725 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:09,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:09,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493236234] [2024-11-10 22:28:09,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493236234] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:09,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846191205] [2024-11-10 22:28:09,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:28:09,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:09,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:09,727 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:28:09,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-10 22:28:09,788 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 22:28:09,788 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:28:09,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-10 22:28:09,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:09,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-10 22:28:10,124 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:10,125 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:10,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2024-11-10 22:28:10,880 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-10 22:28:10,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 47 [2024-11-10 22:28:11,057 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:11,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846191205] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:11,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:11,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 11] total 33 [2024-11-10 22:28:11,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005837932] [2024-11-10 22:28:11,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:11,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-10 22:28:11,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:11,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-10 22:28:11,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1021, Unknown=0, NotChecked=0, Total=1190 [2024-11-10 22:28:11,122 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 56 [2024-11-10 22:28:11,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 275 transitions, 2699 flow. Second operand has 35 states, 35 states have (on average 16.8) internal successors, (588), 35 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:11,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:11,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 56 [2024-11-10 22:28:11,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:15,651 INFO L124 PetriNetUnfolderBase]: 11636/23480 cut-off events. [2024-11-10 22:28:15,651 INFO L125 PetriNetUnfolderBase]: For 265904/265904 co-relation queries the response was YES. [2024-11-10 22:28:15,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83860 conditions, 23480 events. 11636/23480 cut-off events. For 265904/265904 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 215531 event pairs, 2666 based on Foata normal form. 2768/25481 useless extension candidates. Maximal degree in co-relation 83818. Up to 4302 conditions per place. [2024-11-10 22:28:15,779 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 238 selfloop transitions, 119 changer transitions 46/417 dead transitions. [2024-11-10 22:28:15,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 417 transitions, 3817 flow [2024-11-10 22:28:15,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-10 22:28:15,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-10 22:28:15,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 805 transitions. [2024-11-10 22:28:15,781 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4227941176470588 [2024-11-10 22:28:15,781 INFO L175 Difference]: Start difference. First operand has 170 places, 275 transitions, 2699 flow. Second operand 34 states and 805 transitions. [2024-11-10 22:28:15,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 417 transitions, 3817 flow [2024-11-10 22:28:15,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 417 transitions, 3357 flow, removed 200 selfloop flow, removed 18 redundant places. [2024-11-10 22:28:15,975 INFO L231 Difference]: Finished difference. Result has 186 places, 216 transitions, 2525 flow [2024-11-10 22:28:15,975 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=1335, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2525, PETRI_PLACES=186, PETRI_TRANSITIONS=216} [2024-11-10 22:28:15,975 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 133 predicate places. [2024-11-10 22:28:15,976 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 216 transitions, 2525 flow [2024-11-10 22:28:15,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 16.8) internal successors, (588), 35 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:15,976 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:15,976 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:15,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-10 22:28:16,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-10 22:28:16,176 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:28:16,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:16,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1393679764, now seen corresponding path program 2 times [2024-11-10 22:28:16,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:16,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863581532] [2024-11-10 22:28:16,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:16,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:16,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:17,047 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:17,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:17,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863581532] [2024-11-10 22:28:17,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863581532] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:17,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806320660] [2024-11-10 22:28:17,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:28:17,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:17,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:17,050 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:28:17,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-10 22:28:17,119 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 22:28:17,119 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:28:17,120 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-10 22:28:17,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:17,357 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:28:17,357 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:17,462 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:28:17,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 54 [2024-11-10 22:28:17,556 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:28:17,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806320660] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:17,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:17,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 22 [2024-11-10 22:28:17,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431031305] [2024-11-10 22:28:17,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:17,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-10 22:28:17,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:17,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-10 22:28:17,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2024-11-10 22:28:17,597 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 56 [2024-11-10 22:28:17,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 216 transitions, 2525 flow. Second operand has 24 states, 24 states have (on average 17.541666666666668) internal successors, (421), 24 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:17,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:17,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 56 [2024-11-10 22:28:17,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:20,533 INFO L124 PetriNetUnfolderBase]: 10596/21940 cut-off events. [2024-11-10 22:28:20,533 INFO L125 PetriNetUnfolderBase]: For 240159/240159 co-relation queries the response was YES. [2024-11-10 22:28:20,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83594 conditions, 21940 events. 10596/21940 cut-off events. For 240159/240159 co-relation queries the response was YES. Maximal size of possible extension queue 733. Compared 204533 event pairs, 1586 based on Foata normal form. 496/21545 useless extension candidates. Maximal degree in co-relation 83544. Up to 7752 conditions per place. [2024-11-10 22:28:20,659 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 236 selfloop transitions, 53 changer transitions 24/327 dead transitions. [2024-11-10 22:28:20,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 327 transitions, 3653 flow [2024-11-10 22:28:20,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-10 22:28:20,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-10 22:28:20,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 495 transitions. [2024-11-10 22:28:20,661 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42091836734693877 [2024-11-10 22:28:20,661 INFO L175 Difference]: Start difference. First operand has 186 places, 216 transitions, 2525 flow. Second operand 21 states and 495 transitions. [2024-11-10 22:28:20,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 327 transitions, 3653 flow [2024-11-10 22:28:21,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 327 transitions, 3133 flow, removed 239 selfloop flow, removed 24 redundant places. [2024-11-10 22:28:21,408 INFO L231 Difference]: Finished difference. Result has 172 places, 187 transitions, 2066 flow [2024-11-10 22:28:21,408 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=1977, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2066, PETRI_PLACES=172, PETRI_TRANSITIONS=187} [2024-11-10 22:28:21,408 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 119 predicate places. [2024-11-10 22:28:21,408 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 187 transitions, 2066 flow [2024-11-10 22:28:21,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 17.541666666666668) internal successors, (421), 24 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:21,409 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:21,409 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:21,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-10 22:28:21,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:21,609 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:28:21,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:21,610 INFO L85 PathProgramCache]: Analyzing trace with hash -808981054, now seen corresponding path program 3 times [2024-11-10 22:28:21,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:21,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266753604] [2024-11-10 22:28:21,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:21,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:21,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:22,304 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:22,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:22,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266753604] [2024-11-10 22:28:22,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266753604] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:22,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536611291] [2024-11-10 22:28:22,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 22:28:22,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:22,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:22,306 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:28:22,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-10 22:28:22,370 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 22:28:22,371 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:28:22,371 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-10 22:28:22,372 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:22,460 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 22:28:22,460 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:22,516 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-10 22:28:22,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2024-11-10 22:28:22,549 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 22:28:22,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536611291] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:22,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:22,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 19 [2024-11-10 22:28:22,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728533285] [2024-11-10 22:28:22,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:22,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-10 22:28:22,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:22,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-10 22:28:22,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2024-11-10 22:28:22,587 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 56 [2024-11-10 22:28:22,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 187 transitions, 2066 flow. Second operand has 21 states, 21 states have (on average 17.19047619047619) internal successors, (361), 21 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:22,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:22,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 56 [2024-11-10 22:28:22,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:25,281 INFO L124 PetriNetUnfolderBase]: 10746/21895 cut-off events. [2024-11-10 22:28:25,281 INFO L125 PetriNetUnfolderBase]: For 160363/160363 co-relation queries the response was YES. [2024-11-10 22:28:25,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75053 conditions, 21895 events. 10746/21895 cut-off events. For 160363/160363 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 197882 event pairs, 1889 based on Foata normal form. 288/21384 useless extension candidates. Maximal degree in co-relation 75010. Up to 8735 conditions per place. [2024-11-10 22:28:25,408 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 247 selfloop transitions, 65 changer transitions 5/331 dead transitions. [2024-11-10 22:28:25,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 331 transitions, 3510 flow [2024-11-10 22:28:25,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-10 22:28:25,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-10 22:28:25,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 522 transitions. [2024-11-10 22:28:25,410 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4052795031055901 [2024-11-10 22:28:25,410 INFO L175 Difference]: Start difference. First operand has 172 places, 187 transitions, 2066 flow. Second operand 23 states and 522 transitions. [2024-11-10 22:28:25,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 331 transitions, 3510 flow [2024-11-10 22:28:26,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 331 transitions, 3340 flow, removed 54 selfloop flow, removed 17 redundant places. [2024-11-10 22:28:26,102 INFO L231 Difference]: Finished difference. Result has 177 places, 203 transitions, 2358 flow [2024-11-10 22:28:26,102 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=1891, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2358, PETRI_PLACES=177, PETRI_TRANSITIONS=203} [2024-11-10 22:28:26,102 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 124 predicate places. [2024-11-10 22:28:26,102 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 203 transitions, 2358 flow [2024-11-10 22:28:26,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 17.19047619047619) internal successors, (361), 21 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:26,103 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:26,103 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:26,115 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-10 22:28:26,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-11-10 22:28:26,303 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:28:26,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:26,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1624887938, now seen corresponding path program 4 times [2024-11-10 22:28:26,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:26,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277827720] [2024-11-10 22:28:26,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:26,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:26,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:26,949 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:26,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:26,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277827720] [2024-11-10 22:28:26,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277827720] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:26,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22491832] [2024-11-10 22:28:26,949 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 22:28:26,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:26,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:26,950 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:28:26,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-10 22:28:27,010 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 22:28:27,010 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:28:27,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-10 22:28:27,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:27,226 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:28:27,226 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:27,277 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-10 22:28:27,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2024-11-10 22:28:27,309 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 22:28:27,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22491832] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:27,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:27,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 4] total 24 [2024-11-10 22:28:27,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247375518] [2024-11-10 22:28:27,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:27,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-10 22:28:27,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:27,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-10 22:28:27,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2024-11-10 22:28:27,375 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 56 [2024-11-10 22:28:27,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 203 transitions, 2358 flow. Second operand has 26 states, 26 states have (on average 16.96153846153846) internal successors, (441), 26 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:27,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:27,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 56 [2024-11-10 22:28:27,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:31,295 INFO L124 PetriNetUnfolderBase]: 13372/27229 cut-off events. [2024-11-10 22:28:31,296 INFO L125 PetriNetUnfolderBase]: For 186752/186752 co-relation queries the response was YES. [2024-11-10 22:28:31,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94390 conditions, 27229 events. 13372/27229 cut-off events. For 186752/186752 co-relation queries the response was YES. Maximal size of possible extension queue 819. Compared 252355 event pairs, 1365 based on Foata normal form. 256/26522 useless extension candidates. Maximal degree in co-relation 94345. Up to 7165 conditions per place. [2024-11-10 22:28:31,463 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 262 selfloop transitions, 93 changer transitions 3/372 dead transitions. [2024-11-10 22:28:31,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 372 transitions, 4191 flow [2024-11-10 22:28:31,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-10 22:28:31,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-10 22:28:31,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 545 transitions. [2024-11-10 22:28:31,465 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4055059523809524 [2024-11-10 22:28:31,465 INFO L175 Difference]: Start difference. First operand has 177 places, 203 transitions, 2358 flow. Second operand 24 states and 545 transitions. [2024-11-10 22:28:31,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 372 transitions, 4191 flow [2024-11-10 22:28:31,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 372 transitions, 4030 flow, removed 29 selfloop flow, removed 11 redundant places. [2024-11-10 22:28:31,992 INFO L231 Difference]: Finished difference. Result has 192 places, 216 transitions, 2689 flow [2024-11-10 22:28:31,992 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=2174, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2689, PETRI_PLACES=192, PETRI_TRANSITIONS=216} [2024-11-10 22:28:31,992 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 139 predicate places. [2024-11-10 22:28:31,992 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 216 transitions, 2689 flow [2024-11-10 22:28:31,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 16.96153846153846) internal successors, (441), 26 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:31,992 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:31,993 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:32,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-10 22:28:32,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:32,193 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:28:32,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:32,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1778239952, now seen corresponding path program 3 times [2024-11-10 22:28:32,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:32,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495534969] [2024-11-10 22:28:32,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:32,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:32,262 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:28:32,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:32,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495534969] [2024-11-10 22:28:32,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495534969] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:32,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787311999] [2024-11-10 22:28:32,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 22:28:32,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:32,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:32,264 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:28:32,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-10 22:28:32,330 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-10 22:28:32,330 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:28:32,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:28:32,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:32,366 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:28:32,367 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:32,615 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 22:28:32,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787311999] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:32,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:32,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 5] total 9 [2024-11-10 22:28:32,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077510796] [2024-11-10 22:28:32,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:32,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 22:28:32,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:32,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 22:28:32,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-11-10 22:28:32,617 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 56 [2024-11-10 22:28:32,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 216 transitions, 2689 flow. Second operand has 11 states, 11 states have (on average 22.727272727272727) internal successors, (250), 11 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:32,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:32,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 56 [2024-11-10 22:28:32,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:37,070 INFO L124 PetriNetUnfolderBase]: 17933/36686 cut-off events. [2024-11-10 22:28:37,070 INFO L125 PetriNetUnfolderBase]: For 286323/286323 co-relation queries the response was YES. [2024-11-10 22:28:37,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131700 conditions, 36686 events. 17933/36686 cut-off events. For 286323/286323 co-relation queries the response was YES. Maximal size of possible extension queue 1019. Compared 354510 event pairs, 2999 based on Foata normal form. 352/35840 useless extension candidates. Maximal degree in co-relation 131651. Up to 13407 conditions per place. [2024-11-10 22:28:37,393 INFO L140 encePairwiseOnDemand]: 50/56 looper letters, 195 selfloop transitions, 101 changer transitions 1/314 dead transitions. [2024-11-10 22:28:37,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 314 transitions, 4482 flow [2024-11-10 22:28:37,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:28:37,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:28:37,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2024-11-10 22:28:37,394 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5678571428571428 [2024-11-10 22:28:37,394 INFO L175 Difference]: Start difference. First operand has 192 places, 216 transitions, 2689 flow. Second operand 5 states and 159 transitions. [2024-11-10 22:28:37,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 314 transitions, 4482 flow [2024-11-10 22:28:38,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 314 transitions, 4308 flow, removed 58 selfloop flow, removed 13 redundant places. [2024-11-10 22:28:38,200 INFO L231 Difference]: Finished difference. Result has 186 places, 258 transitions, 3619 flow [2024-11-10 22:28:38,200 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=2547, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3619, PETRI_PLACES=186, PETRI_TRANSITIONS=258} [2024-11-10 22:28:38,200 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 133 predicate places. [2024-11-10 22:28:38,200 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 258 transitions, 3619 flow [2024-11-10 22:28:38,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.727272727272727) internal successors, (250), 11 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:38,200 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:38,200 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:38,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-10 22:28:38,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:38,401 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:28:38,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:38,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1758105800, now seen corresponding path program 4 times [2024-11-10 22:28:38,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:38,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749515015] [2024-11-10 22:28:38,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:38,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:38,545 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:28:38,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:38,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749515015] [2024-11-10 22:28:38,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749515015] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:38,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004224369] [2024-11-10 22:28:38,546 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 22:28:38,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:38,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:38,547 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:28:38,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-10 22:28:38,608 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 22:28:38,608 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:28:38,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 22:28:38,609 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:38,732 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 22:28:38,732 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:38,872 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 22:28:38,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004224369] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:38,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:38,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2024-11-10 22:28:38,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590998997] [2024-11-10 22:28:38,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:38,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-10 22:28:38,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:38,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-10 22:28:38,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=630, Unknown=0, NotChecked=0, Total=756 [2024-11-10 22:28:38,916 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 56 [2024-11-10 22:28:38,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 258 transitions, 3619 flow. Second operand has 28 states, 28 states have (on average 17.071428571428573) internal successors, (478), 28 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:38,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:38,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 56 [2024-11-10 22:28:38,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:41,675 INFO L124 PetriNetUnfolderBase]: 10405/20112 cut-off events. [2024-11-10 22:28:41,675 INFO L125 PetriNetUnfolderBase]: For 199401/199401 co-relation queries the response was YES. [2024-11-10 22:28:41,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81207 conditions, 20112 events. 10405/20112 cut-off events. For 199401/199401 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 166717 event pairs, 8113 based on Foata normal form. 48/19449 useless extension candidates. Maximal degree in co-relation 81154. Up to 14505 conditions per place. [2024-11-10 22:28:41,830 INFO L140 encePairwiseOnDemand]: 47/56 looper letters, 109 selfloop transitions, 12 changer transitions 73/208 dead transitions. [2024-11-10 22:28:41,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 208 transitions, 2580 flow [2024-11-10 22:28:41,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-10 22:28:41,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-10 22:28:41,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 360 transitions. [2024-11-10 22:28:41,832 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37815126050420167 [2024-11-10 22:28:41,832 INFO L175 Difference]: Start difference. First operand has 186 places, 258 transitions, 3619 flow. Second operand 17 states and 360 transitions. [2024-11-10 22:28:41,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 208 transitions, 2580 flow [2024-11-10 22:28:42,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 208 transitions, 2272 flow, removed 90 selfloop flow, removed 20 redundant places. [2024-11-10 22:28:42,539 INFO L231 Difference]: Finished difference. Result has 165 places, 135 transitions, 1633 flow [2024-11-10 22:28:42,539 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=1737, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1633, PETRI_PLACES=165, PETRI_TRANSITIONS=135} [2024-11-10 22:28:42,539 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 112 predicate places. [2024-11-10 22:28:42,539 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 135 transitions, 1633 flow [2024-11-10 22:28:42,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 17.071428571428573) internal successors, (478), 28 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:42,540 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:28:42,540 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:28:42,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-10 22:28:42,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-10 22:28:42,740 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-10 22:28:42,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:28:42,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1938317251, now seen corresponding path program 5 times [2024-11-10 22:28:42,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:28:42,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165217301] [2024-11-10 22:28:42,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:28:42,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:28:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:43,184 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 2 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:43,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:43,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165217301] [2024-11-10 22:28:43,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165217301] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:43,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171055170] [2024-11-10 22:28:43,185 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 22:28:43,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:43,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:43,186 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:28:43,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-10 22:28:43,255 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-10 22:28:43,255 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:28:43,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-10 22:28:43,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:43,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 22:28:44,038 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 2 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:44,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:44,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 86 [2024-11-10 22:28:44,885 INFO L349 Elim1Store]: treesize reduction 8, result has 87.7 percent of original size [2024-11-10 22:28:44,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 281 treesize of output 245 [2024-11-10 22:28:46,840 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 1 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:46,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171055170] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:46,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:46,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 45 [2024-11-10 22:28:46,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712240407] [2024-11-10 22:28:46,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:46,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-10 22:28:46,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:46,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-10 22:28:46,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1931, Unknown=0, NotChecked=0, Total=2162 [2024-11-10 22:28:46,976 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 56 [2024-11-10 22:28:46,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 135 transitions, 1633 flow. Second operand has 47 states, 47 states have (on average 16.78723404255319) internal successors, (789), 47 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:46,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:46,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 56 [2024-11-10 22:28:46,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand