./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-bad-ring.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-bad-ring.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 be394a9cdc866c1e1426a3fe296e99873bcf37ee5e7e1c9e487b239a3e0a8fbe --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:25:11,403 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:25:11,461 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:25:11,467 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:25:11,468 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:25:11,513 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:25:11,514 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:25:11,514 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:25:11,515 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:25:11,515 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:25:11,515 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:25:11,515 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:25:11,516 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:25:11,516 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:25:11,516 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:25:11,517 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:25:11,517 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:25:11,517 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:25:11,517 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:25:11,518 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:25:11,518 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:25:11,518 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:25:11,519 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:25:11,519 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:25:11,519 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:25:11,519 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:25:11,520 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:25:11,520 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:25:11,520 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:25:11,524 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:25:11,524 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:25:11,525 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:25:11,525 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:25:11,525 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:25:11,525 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:25:11,525 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:25:11,525 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:25:11,525 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:25:11,526 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:25:11,526 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:25:11,526 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:25:11,526 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:25:11,526 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:25:11,526 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:25:11,526 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be394a9cdc866c1e1426a3fe296e99873bcf37ee5e7e1c9e487b239a3e0a8fbe [2024-11-10 22:25:11,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:25:11,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:25:11,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:25:11,697 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:25:11,698 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:25:11,698 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2024-11-10 22:25:12,955 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:25:13,118 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:25:13,119 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2024-11-10 22:25:13,127 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de22c0dcb/ea9e0ab5e46c44cc8919b11d0f451d2e/FLAG76f0d8fe9 [2024-11-10 22:25:13,141 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de22c0dcb/ea9e0ab5e46c44cc8919b11d0f451d2e [2024-11-10 22:25:13,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:25:13,146 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:25:13,150 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:25:13,150 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:25:13,155 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:25:13,156 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:25:13" (1/1) ... [2024-11-10 22:25:13,156 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27d0038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:13, skipping insertion in model container [2024-11-10 22:25:13,157 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:25:13" (1/1) ... [2024-11-10 22:25:13,180 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:25:13,357 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:25:13,365 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:25:13,399 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:25:13,418 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:25:13,419 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:13 WrapperNode [2024-11-10 22:25:13,420 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:25:13,421 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:25:13,421 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:25:13,421 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:25:13,426 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:13" (1/1) ... [2024-11-10 22:25:13,437 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:13" (1/1) ... [2024-11-10 22:25:13,466 INFO L138 Inliner]: procedures = 24, calls = 47, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 340 [2024-11-10 22:25:13,467 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:25:13,468 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:25:13,468 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:25:13,468 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:25:13,476 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:13" (1/1) ... [2024-11-10 22:25:13,476 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:13" (1/1) ... [2024-11-10 22:25:13,482 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:13" (1/1) ... [2024-11-10 22:25:13,504 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-10 22:25:13,504 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:13" (1/1) ... [2024-11-10 22:25:13,504 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:13" (1/1) ... [2024-11-10 22:25:13,510 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:13" (1/1) ... [2024-11-10 22:25:13,511 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:13" (1/1) ... [2024-11-10 22:25:13,512 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:13" (1/1) ... [2024-11-10 22:25:13,513 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:13" (1/1) ... [2024-11-10 22:25:13,515 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:25:13,516 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:25:13,516 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:25:13,516 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:25:13,517 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:13" (1/1) ... [2024-11-10 22:25:13,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:25:13,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:13,547 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 22:25:13,552 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 22:25:13,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:25:13,591 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 22:25:13,591 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 22:25:13,591 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 22:25:13,591 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 22:25:13,591 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 22:25:13,591 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 22:25:13,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:25:13,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 22:25:13,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 22:25:13,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 22:25:13,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 22:25:13,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 22:25:13,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 22:25:13,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:25:13,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:25:13,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 22:25:13,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 22:25:13,594 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 22:25:13,686 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:25:13,688 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:25:14,135 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:25:14,135 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:25:14,406 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:25:14,406 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:25:14,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:25:14 BoogieIcfgContainer [2024-11-10 22:25:14,407 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:25:14,410 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:25:14,410 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:25:14,412 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:25:14,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:25:13" (1/3) ... [2024-11-10 22:25:14,413 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a4abaa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:25:14, skipping insertion in model container [2024-11-10 22:25:14,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:25:13" (2/3) ... [2024-11-10 22:25:14,413 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a4abaa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:25:14, skipping insertion in model container [2024-11-10 22:25:14,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:25:14" (3/3) ... [2024-11-10 22:25:14,415 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring.wvr.c [2024-11-10 22:25:14,449 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:25:14,449 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-11-10 22:25:14,449 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:25:14,532 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 22:25:14,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 104 transitions, 229 flow [2024-11-10 22:25:14,608 INFO L124 PetriNetUnfolderBase]: 14/101 cut-off events. [2024-11-10 22:25:14,608 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 22:25:14,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 101 events. 14/101 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 330 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 79. Up to 3 conditions per place. [2024-11-10 22:25:14,614 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 104 transitions, 229 flow [2024-11-10 22:25:14,618 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 99 transitions, 213 flow [2024-11-10 22:25:14,628 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:25:14,635 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;@297ee65f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:25:14,635 INFO L334 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-11-10 22:25:14,638 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:25:14,638 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-10 22:25:14,638 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:25:14,639 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:14,639 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 22:25:14,639 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-10 22:25:14,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:14,644 INFO L85 PathProgramCache]: Analyzing trace with hash 28714844, now seen corresponding path program 1 times [2024-11-10 22:25:14,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:14,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598837181] [2024-11-10 22:25:14,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:14,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:14,863 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 22:25:14,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:14,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598837181] [2024-11-10 22:25:14,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598837181] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:14,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:25:14,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:25:14,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128317422] [2024-11-10 22:25:14,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:14,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:25:14,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:14,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:25:14,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:25:14,917 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 104 [2024-11-10 22:25:14,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 99 transitions, 213 flow. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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 22:25:14,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:14,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 104 [2024-11-10 22:25:14,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:15,990 INFO L124 PetriNetUnfolderBase]: 5496/9393 cut-off events. [2024-11-10 22:25:15,990 INFO L125 PetriNetUnfolderBase]: For 381/381 co-relation queries the response was YES. [2024-11-10 22:25:16,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17275 conditions, 9393 events. 5496/9393 cut-off events. For 381/381 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 72466 event pairs, 4968 based on Foata normal form. 1071/7074 useless extension candidates. Maximal degree in co-relation 16490. Up to 7538 conditions per place. [2024-11-10 22:25:16,046 INFO L140 encePairwiseOnDemand]: 73/104 looper letters, 51 selfloop transitions, 10 changer transitions 0/93 dead transitions. [2024-11-10 22:25:16,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 93 transitions, 323 flow [2024-11-10 22:25:16,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:25:16,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:25:16,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 225 transitions. [2024-11-10 22:25:16,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5408653846153846 [2024-11-10 22:25:16,059 INFO L175 Difference]: Start difference. First operand has 95 places, 99 transitions, 213 flow. Second operand 4 states and 225 transitions. [2024-11-10 22:25:16,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 93 transitions, 323 flow [2024-11-10 22:25:16,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 93 transitions, 314 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 22:25:16,069 INFO L231 Difference]: Finished difference. Result has 89 places, 93 transitions, 262 flow [2024-11-10 22:25:16,071 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=262, PETRI_PLACES=89, PETRI_TRANSITIONS=93} [2024-11-10 22:25:16,075 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, -6 predicate places. [2024-11-10 22:25:16,075 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 93 transitions, 262 flow [2024-11-10 22:25:16,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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 22:25:16,075 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:16,076 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-10 22:25:16,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:25:16,076 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-10 22:25:16,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:16,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1659810948, now seen corresponding path program 1 times [2024-11-10 22:25:16,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:16,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841802409] [2024-11-10 22:25:16,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:16,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:16,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:16,207 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 22:25:16,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:16,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841802409] [2024-11-10 22:25:16,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841802409] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:16,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475177669] [2024-11-10 22:25:16,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:16,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:16,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:16,210 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 22:25:16,212 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 22:25:16,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:16,286 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:25:16,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:16,393 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 22:25:16,394 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:25:16,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475177669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:16,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:25:16,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-10 22:25:16,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673254236] [2024-11-10 22:25:16,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:16,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:25:16,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:16,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:25:16,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:25:16,435 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 104 [2024-11-10 22:25:16,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 93 transitions, 262 flow. Second operand has 6 states, 6 states have (on average 35.833333333333336) internal successors, (215), 6 states have internal predecessors, (215), 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 22:25:16,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:16,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 104 [2024-11-10 22:25:16,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:17,365 INFO L124 PetriNetUnfolderBase]: 5496/9390 cut-off events. [2024-11-10 22:25:17,366 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2024-11-10 22:25:17,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17180 conditions, 9390 events. 5496/9390 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 72576 event pairs, 4968 based on Foata normal form. 3/6003 useless extension candidates. Maximal degree in co-relation 17101. Up to 7523 conditions per place. [2024-11-10 22:25:17,415 INFO L140 encePairwiseOnDemand]: 91/104 looper letters, 41 selfloop transitions, 17 changer transitions 0/90 dead transitions. [2024-11-10 22:25:17,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 90 transitions, 366 flow [2024-11-10 22:25:17,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:25:17,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:25:17,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 271 transitions. [2024-11-10 22:25:17,420 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4342948717948718 [2024-11-10 22:25:17,420 INFO L175 Difference]: Start difference. First operand has 89 places, 93 transitions, 262 flow. Second operand 6 states and 271 transitions. [2024-11-10 22:25:17,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 90 transitions, 366 flow [2024-11-10 22:25:17,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 90 transitions, 366 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:25:17,423 INFO L231 Difference]: Finished difference. Result has 91 places, 90 transitions, 284 flow [2024-11-10 22:25:17,424 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=284, PETRI_PLACES=91, PETRI_TRANSITIONS=90} [2024-11-10 22:25:17,425 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, -4 predicate places. [2024-11-10 22:25:17,425 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 90 transitions, 284 flow [2024-11-10 22:25:17,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.833333333333336) internal successors, (215), 6 states have internal predecessors, (215), 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 22:25:17,425 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:17,426 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-10 22:25:17,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 22:25:17,626 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 22:25:17,626 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-10 22:25:17,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:17,627 INFO L85 PathProgramCache]: Analyzing trace with hash -85467306, now seen corresponding path program 1 times [2024-11-10 22:25:17,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:17,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076199196] [2024-11-10 22:25:17,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:17,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:17,806 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 22:25:17,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:17,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076199196] [2024-11-10 22:25:17,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076199196] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:17,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843910333] [2024-11-10 22:25:17,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:17,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:17,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:17,812 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 22:25:17,816 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 22:25:17,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:17,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:25:17,885 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:17,908 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 22:25:17,909 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:17,940 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 22:25:17,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843910333] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:17,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:17,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-10 22:25:17,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449272502] [2024-11-10 22:25:17,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:17,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:25:17,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:17,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:25:17,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:25:18,001 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 104 [2024-11-10 22:25:18,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 90 transitions, 284 flow. Second operand has 12 states, 12 states have (on average 36.083333333333336) internal successors, (433), 12 states have internal predecessors, (433), 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 22:25:18,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:18,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 104 [2024-11-10 22:25:18,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:18,842 INFO L124 PetriNetUnfolderBase]: 5505/9444 cut-off events. [2024-11-10 22:25:18,843 INFO L125 PetriNetUnfolderBase]: For 272/272 co-relation queries the response was YES. [2024-11-10 22:25:18,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17339 conditions, 9444 events. 5505/9444 cut-off events. For 272/272 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 73155 event pairs, 4968 based on Foata normal form. 9/6066 useless extension candidates. Maximal degree in co-relation 17103. Up to 7538 conditions per place. [2024-11-10 22:25:18,887 INFO L140 encePairwiseOnDemand]: 91/104 looper letters, 48 selfloop transitions, 37 changer transitions 0/117 dead transitions. [2024-11-10 22:25:18,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 117 transitions, 628 flow [2024-11-10 22:25:18,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:25:18,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:25:18,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 444 transitions. [2024-11-10 22:25:18,890 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4269230769230769 [2024-11-10 22:25:18,890 INFO L175 Difference]: Start difference. First operand has 91 places, 90 transitions, 284 flow. Second operand 10 states and 444 transitions. [2024-11-10 22:25:18,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 117 transitions, 628 flow [2024-11-10 22:25:18,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 117 transitions, 545 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-10 22:25:18,894 INFO L231 Difference]: Finished difference. Result has 98 places, 117 transitions, 499 flow [2024-11-10 22:25:18,894 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=499, PETRI_PLACES=98, PETRI_TRANSITIONS=117} [2024-11-10 22:25:18,894 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, 3 predicate places. [2024-11-10 22:25:18,895 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 117 transitions, 499 flow [2024-11-10 22:25:18,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 36.083333333333336) internal successors, (433), 12 states have internal predecessors, (433), 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 22:25:18,895 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:18,895 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:18,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-10 22:25:19,096 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 22:25:19,096 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-10 22:25:19,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:19,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1513057063, now seen corresponding path program 1 times [2024-11-10 22:25:19,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:19,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269603706] [2024-11-10 22:25:19,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:19,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:19,291 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 22:25:19,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:19,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269603706] [2024-11-10 22:25:19,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269603706] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:19,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:25:19,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:25:19,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9937836] [2024-11-10 22:25:19,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:19,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:25:19,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:19,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:25:19,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:25:19,296 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 104 [2024-11-10 22:25:19,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 117 transitions, 499 flow. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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 22:25:19,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:19,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 104 [2024-11-10 22:25:19,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:20,241 INFO L124 PetriNetUnfolderBase]: 5645/9647 cut-off events. [2024-11-10 22:25:20,242 INFO L125 PetriNetUnfolderBase]: For 425/425 co-relation queries the response was YES. [2024-11-10 22:25:20,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17924 conditions, 9647 events. 5645/9647 cut-off events. For 425/425 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 72612 event pairs, 5091 based on Foata normal form. 124/6455 useless extension candidates. Maximal degree in co-relation 17751. Up to 7578 conditions per place. [2024-11-10 22:25:20,300 INFO L140 encePairwiseOnDemand]: 94/104 looper letters, 130 selfloop transitions, 4 changer transitions 1/167 dead transitions. [2024-11-10 22:25:20,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 167 transitions, 1025 flow [2024-11-10 22:25:20,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:25:20,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:25:20,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 274 transitions. [2024-11-10 22:25:20,302 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5269230769230769 [2024-11-10 22:25:20,302 INFO L175 Difference]: Start difference. First operand has 98 places, 117 transitions, 499 flow. Second operand 5 states and 274 transitions. [2024-11-10 22:25:20,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 167 transitions, 1025 flow [2024-11-10 22:25:20,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 167 transitions, 965 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-11-10 22:25:20,307 INFO L231 Difference]: Finished difference. Result has 102 places, 118 transitions, 490 flow [2024-11-10 22:25:20,307 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=490, PETRI_PLACES=102, PETRI_TRANSITIONS=118} [2024-11-10 22:25:20,308 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, 7 predicate places. [2024-11-10 22:25:20,309 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 118 transitions, 490 flow [2024-11-10 22:25:20,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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 22:25:20,309 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:20,309 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:20,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 22:25:20,310 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-10 22:25:20,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:20,310 INFO L85 PathProgramCache]: Analyzing trace with hash -579879247, now seen corresponding path program 1 times [2024-11-10 22:25:20,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:20,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287430421] [2024-11-10 22:25:20,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:20,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:20,470 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 22:25:20,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:20,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287430421] [2024-11-10 22:25:20,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287430421] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:20,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924831849] [2024-11-10 22:25:20,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:20,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:20,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:20,473 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 22:25:20,474 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 22:25:20,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:20,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:25:20,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:20,582 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 22:25:20,583 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:25:20,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924831849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:20,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:25:20,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-10 22:25:20,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876091656] [2024-11-10 22:25:20,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:20,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:25:20,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:20,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:25:20,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-10 22:25:20,585 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 104 [2024-11-10 22:25:20,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 118 transitions, 490 flow. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 22:25:20,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:20,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 104 [2024-11-10 22:25:20,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:21,054 INFO L124 PetriNetUnfolderBase]: 4134/7246 cut-off events. [2024-11-10 22:25:21,055 INFO L125 PetriNetUnfolderBase]: For 974/974 co-relation queries the response was YES. [2024-11-10 22:25:21,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13941 conditions, 7246 events. 4134/7246 cut-off events. For 974/974 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 52029 event pairs, 3678 based on Foata normal form. 0/5063 useless extension candidates. Maximal degree in co-relation 13777. Up to 5746 conditions per place. [2024-11-10 22:25:21,091 INFO L140 encePairwiseOnDemand]: 100/104 looper letters, 78 selfloop transitions, 1 changer transitions 0/115 dead transitions. [2024-11-10 22:25:21,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 115 transitions, 636 flow [2024-11-10 22:25:21,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:25:21,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:25:21,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2024-11-10 22:25:21,093 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-10 22:25:21,093 INFO L175 Difference]: Start difference. First operand has 102 places, 118 transitions, 490 flow. Second operand 3 states and 169 transitions. [2024-11-10 22:25:21,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 115 transitions, 636 flow [2024-11-10 22:25:21,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 115 transitions, 632 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-10 22:25:21,096 INFO L231 Difference]: Finished difference. Result has 100 places, 115 transitions, 476 flow [2024-11-10 22:25:21,096 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=476, PETRI_PLACES=100, PETRI_TRANSITIONS=115} [2024-11-10 22:25:21,096 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, 5 predicate places. [2024-11-10 22:25:21,097 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 115 transitions, 476 flow [2024-11-10 22:25:21,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 22:25:21,097 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:21,097 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:21,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 22:25:21,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:21,298 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-10 22:25:21,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:21,298 INFO L85 PathProgramCache]: Analyzing trace with hash -2018043687, now seen corresponding path program 1 times [2024-11-10 22:25:21,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:21,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132534478] [2024-11-10 22:25:21,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:21,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:21,341 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 22:25:21,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:21,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132534478] [2024-11-10 22:25:21,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132534478] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:21,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:25:21,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:25:21,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26695239] [2024-11-10 22:25:21,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:21,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:25:21,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:21,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:25:21,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:25:21,343 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 104 [2024-11-10 22:25:21,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 115 transitions, 476 flow. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 22:25:21,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:21,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 104 [2024-11-10 22:25:21,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:21,781 INFO L124 PetriNetUnfolderBase]: 3784/6382 cut-off events. [2024-11-10 22:25:21,781 INFO L125 PetriNetUnfolderBase]: For 1000/1000 co-relation queries the response was YES. [2024-11-10 22:25:21,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12852 conditions, 6382 events. 3784/6382 cut-off events. For 1000/1000 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 41527 event pairs, 1374 based on Foata normal form. 52/4623 useless extension candidates. Maximal degree in co-relation 12836. Up to 4417 conditions per place. [2024-11-10 22:25:21,806 INFO L140 encePairwiseOnDemand]: 100/104 looper letters, 95 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2024-11-10 22:25:21,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 133 transitions, 715 flow [2024-11-10 22:25:21,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:25:21,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:25:21,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 186 transitions. [2024-11-10 22:25:21,808 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2024-11-10 22:25:21,808 INFO L175 Difference]: Start difference. First operand has 100 places, 115 transitions, 476 flow. Second operand 3 states and 186 transitions. [2024-11-10 22:25:21,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 133 transitions, 715 flow [2024-11-10 22:25:21,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 133 transitions, 714 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:25:21,811 INFO L231 Difference]: Finished difference. Result has 102 places, 116 transitions, 489 flow [2024-11-10 22:25:21,811 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=489, PETRI_PLACES=102, PETRI_TRANSITIONS=116} [2024-11-10 22:25:21,811 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, 7 predicate places. [2024-11-10 22:25:21,812 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 116 transitions, 489 flow [2024-11-10 22:25:21,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 22:25:21,812 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:21,812 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:21,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 22:25:21,812 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-10 22:25:21,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:21,813 INFO L85 PathProgramCache]: Analyzing trace with hash -796385445, now seen corresponding path program 1 times [2024-11-10 22:25:21,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:21,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706229315] [2024-11-10 22:25:21,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:21,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:21,861 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 22:25:21,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:21,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706229315] [2024-11-10 22:25:21,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706229315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:21,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:25:21,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:25:21,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926996848] [2024-11-10 22:25:21,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:21,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:25:21,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:21,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:25:21,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:25:21,864 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 104 [2024-11-10 22:25:21,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 116 transitions, 489 flow. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 22:25:21,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:21,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 104 [2024-11-10 22:25:21,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:22,326 INFO L124 PetriNetUnfolderBase]: 4120/7302 cut-off events. [2024-11-10 22:25:22,326 INFO L125 PetriNetUnfolderBase]: For 1568/1644 co-relation queries the response was YES. [2024-11-10 22:25:22,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15089 conditions, 7302 events. 4120/7302 cut-off events. For 1568/1644 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 50568 event pairs, 1865 based on Foata normal form. 150/5581 useless extension candidates. Maximal degree in co-relation 15071. Up to 3399 conditions per place. [2024-11-10 22:25:22,470 INFO L140 encePairwiseOnDemand]: 100/104 looper letters, 98 selfloop transitions, 2 changer transitions 0/136 dead transitions. [2024-11-10 22:25:22,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 136 transitions, 743 flow [2024-11-10 22:25:22,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:25:22,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:25:22,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 188 transitions. [2024-11-10 22:25:22,471 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6025641025641025 [2024-11-10 22:25:22,471 INFO L175 Difference]: Start difference. First operand has 102 places, 116 transitions, 489 flow. Second operand 3 states and 188 transitions. [2024-11-10 22:25:22,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 136 transitions, 743 flow [2024-11-10 22:25:22,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 136 transitions, 741 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:25:22,475 INFO L231 Difference]: Finished difference. Result has 104 places, 117 transitions, 501 flow [2024-11-10 22:25:22,475 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=501, PETRI_PLACES=104, PETRI_TRANSITIONS=117} [2024-11-10 22:25:22,475 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, 9 predicate places. [2024-11-10 22:25:22,476 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 117 transitions, 501 flow [2024-11-10 22:25:22,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 22:25:22,476 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:22,476 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-10 22:25:22,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 22:25:22,477 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-10 22:25:22,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:22,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1699552990, now seen corresponding path program 2 times [2024-11-10 22:25:22,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:22,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70208463] [2024-11-10 22:25:22,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:22,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:22,589 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 22:25:22,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:22,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70208463] [2024-11-10 22:25:22,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70208463] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:22,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677022622] [2024-11-10 22:25:22,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:25:22,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:22,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:22,595 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 22:25:22,596 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 22:25:22,666 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:25:22,666 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:25:22,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:25:22,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:22,705 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 22:25:22,705 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:22,733 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 22:25:22,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677022622] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:22,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:22,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-10 22:25:22,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829390] [2024-11-10 22:25:22,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:22,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 22:25:22,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:22,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 22:25:22,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-10 22:25:22,785 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 104 [2024-11-10 22:25:22,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 117 transitions, 501 flow. Second operand has 14 states, 14 states have (on average 33.142857142857146) internal successors, (464), 14 states have internal predecessors, (464), 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 22:25:22,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:22,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 104 [2024-11-10 22:25:22,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:23,830 INFO L124 PetriNetUnfolderBase]: 4125/7576 cut-off events. [2024-11-10 22:25:23,831 INFO L125 PetriNetUnfolderBase]: For 1761/1837 co-relation queries the response was YES. [2024-11-10 22:25:23,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15912 conditions, 7576 events. 4125/7576 cut-off events. For 1761/1837 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 54271 event pairs, 3641 based on Foata normal form. 6/5868 useless extension candidates. Maximal degree in co-relation 15892. Up to 5935 conditions per place. [2024-11-10 22:25:23,875 INFO L140 encePairwiseOnDemand]: 89/104 looper letters, 50 selfloop transitions, 60 changer transitions 0/139 dead transitions. [2024-11-10 22:25:23,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 139 transitions, 806 flow [2024-11-10 22:25:23,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-10 22:25:23,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-10 22:25:23,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 880 transitions. [2024-11-10 22:25:23,878 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3525641025641026 [2024-11-10 22:25:23,879 INFO L175 Difference]: Start difference. First operand has 104 places, 117 transitions, 501 flow. Second operand 24 states and 880 transitions. [2024-11-10 22:25:23,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 139 transitions, 806 flow [2024-11-10 22:25:23,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 139 transitions, 804 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:25:23,885 INFO L231 Difference]: Finished difference. Result has 128 places, 135 transitions, 723 flow [2024-11-10 22:25:23,885 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=723, PETRI_PLACES=128, PETRI_TRANSITIONS=135} [2024-11-10 22:25:23,885 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, 33 predicate places. [2024-11-10 22:25:23,886 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 135 transitions, 723 flow [2024-11-10 22:25:23,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 33.142857142857146) internal successors, (464), 14 states have internal predecessors, (464), 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 22:25:23,886 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:23,886 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 22:25:23,900 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 22:25:24,087 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 22:25:24,087 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-10 22:25:24,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:24,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1210518421, now seen corresponding path program 1 times [2024-11-10 22:25:24,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:24,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043352880] [2024-11-10 22:25:24,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:24,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:24,135 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 22:25:24,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:24,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043352880] [2024-11-10 22:25:24,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043352880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:24,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:25:24,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:25:24,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370033153] [2024-11-10 22:25:24,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:24,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:25:24,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:24,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:25:24,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:25:24,138 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 104 [2024-11-10 22:25:24,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 135 transitions, 723 flow. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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 22:25:24,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:24,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 104 [2024-11-10 22:25:24,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:24,776 INFO L124 PetriNetUnfolderBase]: 3055/6168 cut-off events. [2024-11-10 22:25:24,777 INFO L125 PetriNetUnfolderBase]: For 1632/1632 co-relation queries the response was YES. [2024-11-10 22:25:24,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12516 conditions, 6168 events. 3055/6168 cut-off events. For 1632/1632 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 45348 event pairs, 1750 based on Foata normal form. 6/4663 useless extension candidates. Maximal degree in co-relation 12492. Up to 4339 conditions per place. [2024-11-10 22:25:24,812 INFO L140 encePairwiseOnDemand]: 100/104 looper letters, 96 selfloop transitions, 3 changer transitions 0/144 dead transitions. [2024-11-10 22:25:24,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 144 transitions, 946 flow [2024-11-10 22:25:24,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:25:24,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:25:24,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2024-11-10 22:25:24,813 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5641025641025641 [2024-11-10 22:25:24,813 INFO L175 Difference]: Start difference. First operand has 128 places, 135 transitions, 723 flow. Second operand 3 states and 176 transitions. [2024-11-10 22:25:24,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 144 transitions, 946 flow [2024-11-10 22:25:24,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 144 transitions, 837 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-11-10 22:25:24,818 INFO L231 Difference]: Finished difference. Result has 122 places, 137 transitions, 637 flow [2024-11-10 22:25:24,819 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=637, PETRI_PLACES=122, PETRI_TRANSITIONS=137} [2024-11-10 22:25:24,819 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, 27 predicate places. [2024-11-10 22:25:24,819 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 137 transitions, 637 flow [2024-11-10 22:25:24,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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 22:25:24,820 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:24,820 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, 1, 1, 1, 1] [2024-11-10 22:25:24,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 22:25:24,820 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-10 22:25:24,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:24,821 INFO L85 PathProgramCache]: Analyzing trace with hash -996570124, now seen corresponding path program 1 times [2024-11-10 22:25:24,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:24,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331776782] [2024-11-10 22:25:24,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:24,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:24,912 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 22:25:24,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:24,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331776782] [2024-11-10 22:25:24,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331776782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:24,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:25:24,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:25:24,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455211200] [2024-11-10 22:25:24,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:24,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:25:24,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:24,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:25:24,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:25:24,919 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 104 [2024-11-10 22:25:24,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 137 transitions, 637 flow. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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 22:25:24,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:24,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 104 [2024-11-10 22:25:24,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:25,553 INFO L124 PetriNetUnfolderBase]: 3210/6579 cut-off events. [2024-11-10 22:25:25,553 INFO L125 PetriNetUnfolderBase]: For 2592/2603 co-relation queries the response was YES. [2024-11-10 22:25:25,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13942 conditions, 6579 events. 3210/6579 cut-off events. For 2592/2603 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 48439 event pairs, 2666 based on Foata normal form. 40/5087 useless extension candidates. Maximal degree in co-relation 13917. Up to 4558 conditions per place. [2024-11-10 22:25:25,577 INFO L140 encePairwiseOnDemand]: 95/104 looper letters, 109 selfloop transitions, 9 changer transitions 26/175 dead transitions. [2024-11-10 22:25:25,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 175 transitions, 1122 flow [2024-11-10 22:25:25,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:25:25,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:25:25,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 266 transitions. [2024-11-10 22:25:25,579 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5115384615384615 [2024-11-10 22:25:25,579 INFO L175 Difference]: Start difference. First operand has 122 places, 137 transitions, 637 flow. Second operand 5 states and 266 transitions. [2024-11-10 22:25:25,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 175 transitions, 1122 flow [2024-11-10 22:25:25,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 175 transitions, 1109 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-10 22:25:25,584 INFO L231 Difference]: Finished difference. Result has 127 places, 138 transitions, 667 flow [2024-11-10 22:25:25,584 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=667, PETRI_PLACES=127, PETRI_TRANSITIONS=138} [2024-11-10 22:25:25,585 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, 32 predicate places. [2024-11-10 22:25:25,585 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 138 transitions, 667 flow [2024-11-10 22:25:25,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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 22:25:25,585 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:25,585 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1] [2024-11-10 22:25:25,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 22:25:25,585 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-10 22:25:25,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:25,586 INFO L85 PathProgramCache]: Analyzing trace with hash -645350707, now seen corresponding path program 1 times [2024-11-10 22:25:25,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:25,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376528081] [2024-11-10 22:25:25,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:25,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:25,732 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:25,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:25,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376528081] [2024-11-10 22:25:25,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376528081] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:25,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699014163] [2024-11-10 22:25:25,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:25,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:25,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:25,734 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 22:25:25,735 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 22:25:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:25,811 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-10 22:25:25,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:25,872 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:25,872 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:26,019 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:25:26,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699014163] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:26,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:26,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-11-10 22:25:26,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882137755] [2024-11-10 22:25:26,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:26,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-10 22:25:26,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:26,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-10 22:25:26,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-11-10 22:25:26,123 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 104 [2024-11-10 22:25:26,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 138 transitions, 667 flow. Second operand has 28 states, 28 states have (on average 36.07142857142857) internal successors, (1010), 28 states have internal predecessors, (1010), 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 22:25:26,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:26,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 104 [2024-11-10 22:25:26,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:26,913 INFO L124 PetriNetUnfolderBase]: 3257/6885 cut-off events. [2024-11-10 22:25:26,913 INFO L125 PetriNetUnfolderBase]: For 3612/3652 co-relation queries the response was YES. [2024-11-10 22:25:26,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14938 conditions, 6885 events. 3257/6885 cut-off events. For 3612/3652 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 52146 event pairs, 2666 based on Foata normal form. 42/5386 useless extension candidates. Maximal degree in co-relation 14911. Up to 4793 conditions per place. [2024-11-10 22:25:26,943 INFO L140 encePairwiseOnDemand]: 92/104 looper letters, 48 selfloop transitions, 110 changer transitions 0/201 dead transitions. [2024-11-10 22:25:26,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 201 transitions, 1466 flow [2024-11-10 22:25:26,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-10 22:25:26,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-10 22:25:26,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1077 transitions. [2024-11-10 22:25:26,946 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39829881656804733 [2024-11-10 22:25:26,946 INFO L175 Difference]: Start difference. First operand has 127 places, 138 transitions, 667 flow. Second operand 26 states and 1077 transitions. [2024-11-10 22:25:26,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 201 transitions, 1466 flow [2024-11-10 22:25:26,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 201 transitions, 1452 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:25:26,952 INFO L231 Difference]: Finished difference. Result has 158 places, 201 transitions, 1440 flow [2024-11-10 22:25:26,952 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1440, PETRI_PLACES=158, PETRI_TRANSITIONS=201} [2024-11-10 22:25:26,953 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, 63 predicate places. [2024-11-10 22:25:26,953 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 201 transitions, 1440 flow [2024-11-10 22:25:26,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 36.07142857142857) internal successors, (1010), 28 states have internal predecessors, (1010), 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 22:25:26,954 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:26,954 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:26,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-10 22:25:27,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-10 22:25:27,157 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-10 22:25:27,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:27,158 INFO L85 PathProgramCache]: Analyzing trace with hash 124437107, now seen corresponding path program 1 times [2024-11-10 22:25:27,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:27,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188516343] [2024-11-10 22:25:27,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:27,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:27,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:27,705 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 22:25:27,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:27,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188516343] [2024-11-10 22:25:27,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188516343] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:27,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193123047] [2024-11-10 22:25:27,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:27,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:27,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:27,708 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 22:25:27,709 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 22:25:27,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:27,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 22:25:27,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:27,861 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:25:27,861 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:25:27,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193123047] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:27,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:25:27,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 13 [2024-11-10 22:25:27,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302494864] [2024-11-10 22:25:27,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:27,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:25:27,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:27,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:25:27,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-10 22:25:27,880 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 104 [2024-11-10 22:25:27,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 201 transitions, 1440 flow. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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 22:25:27,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:27,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 104 [2024-11-10 22:25:27,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:28,557 INFO L124 PetriNetUnfolderBase]: 4114/8313 cut-off events. [2024-11-10 22:25:28,558 INFO L125 PetriNetUnfolderBase]: For 4489/4489 co-relation queries the response was YES. [2024-11-10 22:25:28,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18221 conditions, 8313 events. 4114/8313 cut-off events. For 4489/4489 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 64277 event pairs, 995 based on Foata normal form. 0/6625 useless extension candidates. Maximal degree in co-relation 18186. Up to 3573 conditions per place. [2024-11-10 22:25:28,593 INFO L140 encePairwiseOnDemand]: 97/104 looper letters, 196 selfloop transitions, 7 changer transitions 0/247 dead transitions. [2024-11-10 22:25:28,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 247 transitions, 1977 flow [2024-11-10 22:25:28,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:25:28,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:25:28,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 292 transitions. [2024-11-10 22:25:28,595 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5615384615384615 [2024-11-10 22:25:28,595 INFO L175 Difference]: Start difference. First operand has 158 places, 201 transitions, 1440 flow. Second operand 5 states and 292 transitions. [2024-11-10 22:25:28,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 247 transitions, 1977 flow [2024-11-10 22:25:28,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 247 transitions, 1657 flow, removed 92 selfloop flow, removed 13 redundant places. [2024-11-10 22:25:28,605 INFO L231 Difference]: Finished difference. Result has 151 places, 205 transitions, 1165 flow [2024-11-10 22:25:28,605 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1120, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1165, PETRI_PLACES=151, PETRI_TRANSITIONS=205} [2024-11-10 22:25:28,609 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, 56 predicate places. [2024-11-10 22:25:28,609 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 205 transitions, 1165 flow [2024-11-10 22:25:28,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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 22:25:28,609 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:28,610 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:28,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-10 22:25:28,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:28,810 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-10 22:25:28,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:28,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1169782062, now seen corresponding path program 1 times [2024-11-10 22:25:28,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:28,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675050240] [2024-11-10 22:25:28,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:28,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:29,253 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 22:25:29,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:29,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675050240] [2024-11-10 22:25:29,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675050240] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:29,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622658626] [2024-11-10 22:25:29,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:29,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:29,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:29,255 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 22:25:29,256 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 22:25:29,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:29,343 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 22:25:29,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:29,386 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:25:29,387 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:25:29,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622658626] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:29,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:25:29,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 12 [2024-11-10 22:25:29,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457440805] [2024-11-10 22:25:29,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:29,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:25:29,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:29,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:25:29,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-10 22:25:29,399 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 104 [2024-11-10 22:25:29,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 205 transitions, 1165 flow. Second operand has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 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 22:25:29,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:29,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 104 [2024-11-10 22:25:29,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:30,029 INFO L124 PetriNetUnfolderBase]: 3874/7900 cut-off events. [2024-11-10 22:25:30,029 INFO L125 PetriNetUnfolderBase]: For 5536/5536 co-relation queries the response was YES. [2024-11-10 22:25:30,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17867 conditions, 7900 events. 3874/7900 cut-off events. For 5536/5536 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 59882 event pairs, 1922 based on Foata normal form. 93/6652 useless extension candidates. Maximal degree in co-relation 17832. Up to 2853 conditions per place. [2024-11-10 22:25:30,075 INFO L140 encePairwiseOnDemand]: 96/104 looper letters, 195 selfloop transitions, 6 changer transitions 0/244 dead transitions. [2024-11-10 22:25:30,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 244 transitions, 1671 flow [2024-11-10 22:25:30,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:25:30,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:25:30,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 285 transitions. [2024-11-10 22:25:30,076 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5480769230769231 [2024-11-10 22:25:30,077 INFO L175 Difference]: Start difference. First operand has 151 places, 205 transitions, 1165 flow. Second operand 5 states and 285 transitions. [2024-11-10 22:25:30,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 244 transitions, 1671 flow [2024-11-10 22:25:30,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 244 transitions, 1661 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-10 22:25:30,095 INFO L231 Difference]: Finished difference. Result has 154 places, 204 transitions, 1165 flow [2024-11-10 22:25:30,096 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1145, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1165, PETRI_PLACES=154, PETRI_TRANSITIONS=204} [2024-11-10 22:25:30,096 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, 59 predicate places. [2024-11-10 22:25:30,096 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 204 transitions, 1165 flow [2024-11-10 22:25:30,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 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 22:25:30,097 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:30,097 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:30,111 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 22:25:30,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:30,297 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-10 22:25:30,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:30,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1169782064, now seen corresponding path program 1 times [2024-11-10 22:25:30,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:30,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738763062] [2024-11-10 22:25:30,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:30,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:30,424 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:25:30,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:30,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738763062] [2024-11-10 22:25:30,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738763062] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:30,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949673865] [2024-11-10 22:25:30,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:30,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:30,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:30,427 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 22:25:30,428 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 22:25:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:30,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:25:30,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:30,544 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:25:30,544 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:25:30,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949673865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:30,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:25:30,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-11-10 22:25:30,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827314238] [2024-11-10 22:25:30,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:30,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:25:30,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:30,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:25:30,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-10 22:25:30,545 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 104 [2024-11-10 22:25:30,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 204 transitions, 1165 flow. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 22:25:30,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:30,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 104 [2024-11-10 22:25:30,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:30,977 INFO L124 PetriNetUnfolderBase]: 2441/5274 cut-off events. [2024-11-10 22:25:30,977 INFO L125 PetriNetUnfolderBase]: For 4686/4823 co-relation queries the response was YES. [2024-11-10 22:25:30,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12225 conditions, 5274 events. 2441/5274 cut-off events. For 4686/4823 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 38521 event pairs, 2045 based on Foata normal form. 252/4757 useless extension candidates. Maximal degree in co-relation 12189. Up to 3824 conditions per place. [2024-11-10 22:25:30,997 INFO L140 encePairwiseOnDemand]: 101/104 looper letters, 155 selfloop transitions, 1 changer transitions 0/202 dead transitions. [2024-11-10 22:25:30,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 202 transitions, 1469 flow [2024-11-10 22:25:30,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:25:30,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:25:30,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 166 transitions. [2024-11-10 22:25:30,998 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.532051282051282 [2024-11-10 22:25:30,998 INFO L175 Difference]: Start difference. First operand has 154 places, 204 transitions, 1165 flow. Second operand 3 states and 166 transitions. [2024-11-10 22:25:30,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 202 transitions, 1469 flow [2024-11-10 22:25:31,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 202 transitions, 1464 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:25:31,005 INFO L231 Difference]: Finished difference. Result has 152 places, 202 transitions, 1154 flow [2024-11-10 22:25:31,006 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1152, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1154, PETRI_PLACES=152, PETRI_TRANSITIONS=202} [2024-11-10 22:25:31,006 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, 57 predicate places. [2024-11-10 22:25:31,006 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 202 transitions, 1154 flow [2024-11-10 22:25:31,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 22:25:31,006 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:31,007 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:31,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-10 22:25:31,210 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 22:25:31,211 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-10 22:25:31,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:31,211 INFO L85 PathProgramCache]: Analyzing trace with hash 234791190, now seen corresponding path program 1 times [2024-11-10 22:25:31,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:31,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878860602] [2024-11-10 22:25:31,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:31,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:31,634 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 22:25:31,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:31,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878860602] [2024-11-10 22:25:31,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878860602] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:31,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138381301] [2024-11-10 22:25:31,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:31,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:31,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:31,636 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 22:25:31,638 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 22:25:31,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:31,725 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 22:25:31,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:31,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:25:31,775 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:25:31,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138381301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:31,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:25:31,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 13 [2024-11-10 22:25:31,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888171781] [2024-11-10 22:25:31,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:31,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:25:31,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:31,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:25:31,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-11-10 22:25:31,786 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 104 [2024-11-10 22:25:31,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 202 transitions, 1154 flow. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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 22:25:31,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:31,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 104 [2024-11-10 22:25:31,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:32,375 INFO L124 PetriNetUnfolderBase]: 3527/7217 cut-off events. [2024-11-10 22:25:32,376 INFO L125 PetriNetUnfolderBase]: For 5038/5238 co-relation queries the response was YES. [2024-11-10 22:25:32,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16837 conditions, 7217 events. 3527/7217 cut-off events. For 5038/5238 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 53781 event pairs, 1569 based on Foata normal form. 182/6302 useless extension candidates. Maximal degree in co-relation 16800. Up to 2482 conditions per place. [2024-11-10 22:25:32,412 INFO L140 encePairwiseOnDemand]: 97/104 looper letters, 189 selfloop transitions, 8 changer transitions 0/241 dead transitions. [2024-11-10 22:25:32,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 241 transitions, 1668 flow [2024-11-10 22:25:32,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:25:32,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:25:32,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 284 transitions. [2024-11-10 22:25:32,414 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5461538461538461 [2024-11-10 22:25:32,415 INFO L175 Difference]: Start difference. First operand has 152 places, 202 transitions, 1154 flow. Second operand 5 states and 284 transitions. [2024-11-10 22:25:32,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 241 transitions, 1668 flow [2024-11-10 22:25:32,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 241 transitions, 1667 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:25:32,424 INFO L231 Difference]: Finished difference. Result has 157 places, 205 transitions, 1209 flow [2024-11-10 22:25:32,424 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1153, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1209, PETRI_PLACES=157, PETRI_TRANSITIONS=205} [2024-11-10 22:25:32,425 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, 62 predicate places. [2024-11-10 22:25:32,425 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 205 transitions, 1209 flow [2024-11-10 22:25:32,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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 22:25:32,425 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:32,425 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:32,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-10 22:25:32,626 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,SelfDestructingSolverStorable14 [2024-11-10 22:25:32,626 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-10 22:25:32,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:32,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1129920433, now seen corresponding path program 1 times [2024-11-10 22:25:32,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:32,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319954061] [2024-11-10 22:25:32,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:32,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:32,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:33,127 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 22:25:33,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:33,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319954061] [2024-11-10 22:25:33,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319954061] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:33,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792306984] [2024-11-10 22:25:33,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:33,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:33,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:33,130 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 22:25:33,131 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 22:25:33,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:33,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 22:25:33,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:33,266 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:25:33,267 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:25:33,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792306984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:33,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:25:33,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 13 [2024-11-10 22:25:33,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108717145] [2024-11-10 22:25:33,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:33,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:25:33,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:33,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:25:33,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-10 22:25:33,278 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 104 [2024-11-10 22:25:33,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 205 transitions, 1209 flow. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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 22:25:33,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:33,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 104 [2024-11-10 22:25:33,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:34,049 INFO L124 PetriNetUnfolderBase]: 3402/7128 cut-off events. [2024-11-10 22:25:34,050 INFO L125 PetriNetUnfolderBase]: For 9080/9104 co-relation queries the response was YES. [2024-11-10 22:25:34,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17514 conditions, 7128 events. 3402/7128 cut-off events. For 9080/9104 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 53508 event pairs, 1772 based on Foata normal form. 125/6164 useless extension candidates. Maximal degree in co-relation 17474. Up to 3535 conditions per place. [2024-11-10 22:25:34,088 INFO L140 encePairwiseOnDemand]: 97/104 looper letters, 189 selfloop transitions, 6 changer transitions 0/239 dead transitions. [2024-11-10 22:25:34,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 239 transitions, 1680 flow [2024-11-10 22:25:34,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:25:34,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:25:34,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 283 transitions. [2024-11-10 22:25:34,090 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5442307692307692 [2024-11-10 22:25:34,090 INFO L175 Difference]: Start difference. First operand has 157 places, 205 transitions, 1209 flow. Second operand 5 states and 283 transitions. [2024-11-10 22:25:34,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 239 transitions, 1680 flow [2024-11-10 22:25:34,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 239 transitions, 1667 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-10 22:25:34,113 INFO L231 Difference]: Finished difference. Result has 159 places, 203 transitions, 1190 flow [2024-11-10 22:25:34,113 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1178, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1190, PETRI_PLACES=159, PETRI_TRANSITIONS=203} [2024-11-10 22:25:34,114 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, 64 predicate places. [2024-11-10 22:25:34,114 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 203 transitions, 1190 flow [2024-11-10 22:25:34,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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 22:25:34,114 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:34,114 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:34,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-10 22:25:34,314 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,SelfDestructingSolverStorable15 [2024-11-10 22:25:34,315 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-10 22:25:34,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:34,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1903506615, now seen corresponding path program 1 times [2024-11-10 22:25:34,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:34,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459655821] [2024-11-10 22:25:34,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:34,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:34,390 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:25:34,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:34,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459655821] [2024-11-10 22:25:34,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459655821] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:34,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:25:34,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:25:34,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725280353] [2024-11-10 22:25:34,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:34,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:25:34,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:34,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:25:34,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:25:34,403 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 104 [2024-11-10 22:25:34,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 203 transitions, 1190 flow. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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 22:25:34,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:34,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 104 [2024-11-10 22:25:34,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:35,421 INFO L124 PetriNetUnfolderBase]: 4518/8397 cut-off events. [2024-11-10 22:25:35,422 INFO L125 PetriNetUnfolderBase]: For 6021/6021 co-relation queries the response was YES. [2024-11-10 22:25:35,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20810 conditions, 8397 events. 4518/8397 cut-off events. For 6021/6021 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 59208 event pairs, 1422 based on Foata normal form. 188/7388 useless extension candidates. Maximal degree in co-relation 20770. Up to 5422 conditions per place. [2024-11-10 22:25:35,484 INFO L140 encePairwiseOnDemand]: 100/104 looper letters, 188 selfloop transitions, 3 changer transitions 0/234 dead transitions. [2024-11-10 22:25:35,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 234 transitions, 1672 flow [2024-11-10 22:25:35,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:25:35,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:25:35,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 229 transitions. [2024-11-10 22:25:35,485 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5504807692307693 [2024-11-10 22:25:35,485 INFO L175 Difference]: Start difference. First operand has 159 places, 203 transitions, 1190 flow. Second operand 4 states and 229 transitions. [2024-11-10 22:25:35,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 234 transitions, 1672 flow [2024-11-10 22:25:35,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 234 transitions, 1664 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:25:35,498 INFO L231 Difference]: Finished difference. Result has 161 places, 204 transitions, 1199 flow [2024-11-10 22:25:35,498 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1185, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1199, PETRI_PLACES=161, PETRI_TRANSITIONS=204} [2024-11-10 22:25:35,498 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, 66 predicate places. [2024-11-10 22:25:35,499 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 204 transitions, 1199 flow [2024-11-10 22:25:35,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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 22:25:35,499 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:35,499 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:35,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-10 22:25:35,499 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-10 22:25:35,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:35,500 INFO L85 PathProgramCache]: Analyzing trace with hash -674989671, now seen corresponding path program 1 times [2024-11-10 22:25:35,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:35,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335136440] [2024-11-10 22:25:35,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:35,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:35,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:35,886 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:25:35,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:35,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335136440] [2024-11-10 22:25:35,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335136440] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:35,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756767564] [2024-11-10 22:25:35,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:35,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:35,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:35,890 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 22:25:35,891 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 22:25:35,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:35,992 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-10 22:25:35,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:36,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:25:36,074 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:25:36,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756767564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:36,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:25:36,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 14 [2024-11-10 22:25:36,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544240828] [2024-11-10 22:25:36,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:36,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:25:36,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:36,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:25:36,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-11-10 22:25:36,089 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 104 [2024-11-10 22:25:36,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 204 transitions, 1199 flow. Second operand has 6 states, 6 states have (on average 40.833333333333336) internal successors, (245), 6 states have internal predecessors, (245), 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 22:25:36,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:36,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 104 [2024-11-10 22:25:36,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:37,400 INFO L124 PetriNetUnfolderBase]: 5212/10251 cut-off events. [2024-11-10 22:25:37,401 INFO L125 PetriNetUnfolderBase]: For 11084/11171 co-relation queries the response was YES. [2024-11-10 22:25:37,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25002 conditions, 10251 events. 5212/10251 cut-off events. For 11084/11171 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 78951 event pairs, 2891 based on Foata normal form. 69/8772 useless extension candidates. Maximal degree in co-relation 24961. Up to 6353 conditions per place. [2024-11-10 22:25:37,505 INFO L140 encePairwiseOnDemand]: 98/104 looper letters, 197 selfloop transitions, 6 changer transitions 1/246 dead transitions. [2024-11-10 22:25:37,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 246 transitions, 1734 flow [2024-11-10 22:25:37,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:25:37,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:25:37,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 317 transitions. [2024-11-10 22:25:37,507 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5080128205128205 [2024-11-10 22:25:37,507 INFO L175 Difference]: Start difference. First operand has 161 places, 204 transitions, 1199 flow. Second operand 6 states and 317 transitions. [2024-11-10 22:25:37,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 246 transitions, 1734 flow [2024-11-10 22:25:37,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 246 transitions, 1726 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:25:37,526 INFO L231 Difference]: Finished difference. Result has 166 places, 206 transitions, 1224 flow [2024-11-10 22:25:37,526 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1195, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1224, PETRI_PLACES=166, PETRI_TRANSITIONS=206} [2024-11-10 22:25:37,526 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, 71 predicate places. [2024-11-10 22:25:37,527 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 206 transitions, 1224 flow [2024-11-10 22:25:37,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.833333333333336) internal successors, (245), 6 states have internal predecessors, (245), 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 22:25:37,527 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:37,527 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:37,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-10 22:25:37,731 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 22:25:37,732 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-10 22:25:37,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:37,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1120836141, now seen corresponding path program 2 times [2024-11-10 22:25:37,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:37,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020661847] [2024-11-10 22:25:37,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:37,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:37,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:38,098 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 22:25:38,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:38,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020661847] [2024-11-10 22:25:38,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020661847] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:38,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113909177] [2024-11-10 22:25:38,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:25:38,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:38,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:38,100 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 22:25:38,104 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 22:25:38,194 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:25:38,194 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:25:38,195 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 22:25:38,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:38,261 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:25:38,261 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:25:38,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113909177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:25:38,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:25:38,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 14 [2024-11-10 22:25:38,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423318770] [2024-11-10 22:25:38,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:25:38,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:25:38,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:38,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:25:38,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-11-10 22:25:38,275 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 104 [2024-11-10 22:25:38,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 206 transitions, 1224 flow. Second operand has 6 states, 6 states have (on average 40.833333333333336) internal successors, (245), 6 states have internal predecessors, (245), 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 22:25:38,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:38,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 104 [2024-11-10 22:25:38,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:39,199 INFO L124 PetriNetUnfolderBase]: 5076/10051 cut-off events. [2024-11-10 22:25:39,200 INFO L125 PetriNetUnfolderBase]: For 11772/11867 co-relation queries the response was YES. [2024-11-10 22:25:39,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24812 conditions, 10051 events. 5076/10051 cut-off events. For 11772/11867 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 77436 event pairs, 2960 based on Foata normal form. 69/8602 useless extension candidates. Maximal degree in co-relation 24769. Up to 6288 conditions per place. [2024-11-10 22:25:39,244 INFO L140 encePairwiseOnDemand]: 98/104 looper letters, 195 selfloop transitions, 7 changer transitions 1/245 dead transitions. [2024-11-10 22:25:39,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 245 transitions, 1762 flow [2024-11-10 22:25:39,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:25:39,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:25:39,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 314 transitions. [2024-11-10 22:25:39,248 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5032051282051282 [2024-11-10 22:25:39,248 INFO L175 Difference]: Start difference. First operand has 166 places, 206 transitions, 1224 flow. Second operand 6 states and 314 transitions. [2024-11-10 22:25:39,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 245 transitions, 1762 flow [2024-11-10 22:25:39,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 245 transitions, 1749 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:25:39,265 INFO L231 Difference]: Finished difference. Result has 170 places, 209 transitions, 1263 flow [2024-11-10 22:25:39,265 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1215, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1263, PETRI_PLACES=170, PETRI_TRANSITIONS=209} [2024-11-10 22:25:39,266 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, 75 predicate places. [2024-11-10 22:25:39,266 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 209 transitions, 1263 flow [2024-11-10 22:25:39,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.833333333333336) internal successors, (245), 6 states have internal predecessors, (245), 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 22:25:39,266 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:39,266 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:39,278 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 22:25:39,468 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 22:25:39,468 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-10 22:25:39,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:39,469 INFO L85 PathProgramCache]: Analyzing trace with hash 773224565, now seen corresponding path program 1 times [2024-11-10 22:25:39,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:39,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353189911] [2024-11-10 22:25:39,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:39,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:39,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:39,797 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 22:25:39,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:25:39,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353189911] [2024-11-10 22:25:39,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353189911] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:25:39,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431329534] [2024-11-10 22:25:39,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:39,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:25:39,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:25:39,799 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 22:25:39,800 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 22:25:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:25:39,891 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-10 22:25:39,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:25:39,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-10 22:25:39,937 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 22:25:40,065 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-10 22:25:40,065 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 11 treesize of output 11 [2024-11-10 22:25:40,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-10 22:25:40,578 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 22:25:40,579 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:25:41,265 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:25:41,265 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 42 [2024-11-10 22:25:41,289 INFO L349 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2024-11-10 22:25:41,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 68 [2024-11-10 22:25:41,298 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-10 22:25:41,299 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 38 treesize of output 26 [2024-11-10 22:25:41,431 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 22:25:41,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431329534] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:25:41,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:25:41,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 29 [2024-11-10 22:25:41,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301746543] [2024-11-10 22:25:41,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:25:41,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-10 22:25:41,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:25:41,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-10 22:25:41,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=770, Unknown=1, NotChecked=0, Total=930 [2024-11-10 22:25:41,900 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 104 [2024-11-10 22:25:41,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 209 transitions, 1263 flow. Second operand has 31 states, 31 states have (on average 26.225806451612904) internal successors, (813), 31 states have internal predecessors, (813), 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 22:25:41,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:25:41,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 104 [2024-11-10 22:25:41,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:25:42,079 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_~q1_front~0_85 Int) (v_~q1_back~0_123 Int)) (let ((.cse0 (select |c_#memory_int#1| c_~q1~0.base))) (or (< c_~n1~0 (+ v_~q1_back~0_123 1)) (not (= 2 (select .cse0 (+ (* v_~q1_back~0_123 4) c_~q1~0.offset)))) (< v_~q1_front~0_85 0) (< (select .cse0 (+ (* 4 v_~q1_front~0_85) c_~q1~0.offset)) 2147483648) (< v_~q1_back~0_123 v_~q1_front~0_85)))) (forall ((v_ArrVal_309 (Array Int Int)) (v_~q1_front~0_85 Int) (v_~q1_back~0_123 Int)) (let ((.cse1 (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_309) c_~q1~0.base))) (or (< (select .cse1 (+ (* 4 v_~q1_front~0_85) c_~q1~0.offset)) 2147483648) (< c_~n1~0 (+ v_~q1_back~0_123 1)) (< v_~q1_front~0_85 0) (< v_~q1_back~0_123 v_~q1_front~0_85) (not (= 2 (select .cse1 (+ (* v_~q1_back~0_123 4) c_~q1~0.offset)))))))) is different from false [2024-11-10 22:25:46,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:25:50,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:25:59,145 INFO L124 PetriNetUnfolderBase]: 26871/48643 cut-off events. [2024-11-10 22:25:59,145 INFO L125 PetriNetUnfolderBase]: For 44666/44762 co-relation queries the response was YES. [2024-11-10 22:25:59,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119982 conditions, 48643 events. 26871/48643 cut-off events. For 44666/44762 co-relation queries the response was YES. Maximal size of possible extension queue 1342. Compared 434428 event pairs, 8941 based on Foata normal form. 795/42389 useless extension candidates. Maximal degree in co-relation 119937. Up to 8668 conditions per place. [2024-11-10 22:25:59,552 INFO L140 encePairwiseOnDemand]: 83/104 looper letters, 574 selfloop transitions, 194 changer transitions 0/789 dead transitions. [2024-11-10 22:25:59,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 789 transitions, 5223 flow [2024-11-10 22:25:59,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-10 22:25:59,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2024-11-10 22:25:59,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 1505 transitions. [2024-11-10 22:25:59,558 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36177884615384615 [2024-11-10 22:25:59,558 INFO L175 Difference]: Start difference. First operand has 170 places, 209 transitions, 1263 flow. Second operand 40 states and 1505 transitions. [2024-11-10 22:25:59,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 789 transitions, 5223 flow [2024-11-10 22:25:59,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 789 transitions, 5194 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-10 22:25:59,731 INFO L231 Difference]: Finished difference. Result has 228 places, 359 transitions, 3140 flow [2024-11-10 22:25:59,732 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1252, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=3140, PETRI_PLACES=228, PETRI_TRANSITIONS=359} [2024-11-10 22:25:59,732 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, 133 predicate places. [2024-11-10 22:25:59,732 INFO L471 AbstractCegarLoop]: Abstraction has has 228 places, 359 transitions, 3140 flow [2024-11-10 22:25:59,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 26.225806451612904) internal successors, (813), 31 states have internal predecessors, (813), 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 22:25:59,733 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:25:59,733 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:25:59,746 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 22:25:59,936 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 22:25:59,937 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-10 22:25:59,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:25:59,937 INFO L85 PathProgramCache]: Analyzing trace with hash -613811997, now seen corresponding path program 2 times [2024-11-10 22:25:59,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:25:59,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779202245] [2024-11-10 22:25:59,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:25:59,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:25:59,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:26:00,577 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:26:00,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:26:00,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779202245] [2024-11-10 22:26:00,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779202245] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:26:00,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446781178] [2024-11-10 22:26:00,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:26:00,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:26:00,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:26:00,580 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 22:26:00,581 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 22:26:00,685 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:26:00,685 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:26:00,686 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 22:26:00,688 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:26:00,787 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-10 22:26:00,787 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:26:00,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446781178] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:26:00,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:26:00,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 16 [2024-11-10 22:26:00,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635575913] [2024-11-10 22:26:00,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:26:00,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:26:00,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:26:00,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:26:00,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2024-11-10 22:26:00,806 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 104 [2024-11-10 22:26:00,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 359 transitions, 3140 flow. Second operand has 6 states, 6 states have (on average 41.833333333333336) internal successors, (251), 6 states have internal predecessors, (251), 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 22:26:00,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:26:00,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 104 [2024-11-10 22:26:00,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:26:05,447 INFO L124 PetriNetUnfolderBase]: 18054/34305 cut-off events. [2024-11-10 22:26:05,447 INFO L125 PetriNetUnfolderBase]: For 123875/124301 co-relation queries the response was YES. [2024-11-10 22:26:05,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105129 conditions, 34305 events. 18054/34305 cut-off events. For 123875/124301 co-relation queries the response was YES. Maximal size of possible extension queue 1008. Compared 308172 event pairs, 10583 based on Foata normal form. 380/29419 useless extension candidates. Maximal degree in co-relation 105063. Up to 24655 conditions per place. [2024-11-10 22:26:05,835 INFO L140 encePairwiseOnDemand]: 97/104 looper letters, 324 selfloop transitions, 27 changer transitions 0/401 dead transitions. [2024-11-10 22:26:05,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 401 transitions, 4009 flow [2024-11-10 22:26:05,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:26:05,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:26:05,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 321 transitions. [2024-11-10 22:26:05,836 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5144230769230769 [2024-11-10 22:26:05,836 INFO L175 Difference]: Start difference. First operand has 228 places, 359 transitions, 3140 flow. Second operand 6 states and 321 transitions. [2024-11-10 22:26:05,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 401 transitions, 4009 flow [2024-11-10 22:26:06,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 401 transitions, 3969 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-11-10 22:26:06,244 INFO L231 Difference]: Finished difference. Result has 229 places, 362 transitions, 3190 flow [2024-11-10 22:26:06,244 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=3100, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3190, PETRI_PLACES=229, PETRI_TRANSITIONS=362} [2024-11-10 22:26:06,245 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, 134 predicate places. [2024-11-10 22:26:06,245 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 362 transitions, 3190 flow [2024-11-10 22:26:06,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 41.833333333333336) internal successors, (251), 6 states have internal predecessors, (251), 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 22:26:06,245 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:26:06,245 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:26:06,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-10 22:26:06,449 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 22:26:06,450 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-10 22:26:06,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:26:06,450 INFO L85 PathProgramCache]: Analyzing trace with hash 681473226, now seen corresponding path program 1 times [2024-11-10 22:26:06,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:26:06,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593801584] [2024-11-10 22:26:06,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:26:06,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:26:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:26:06,668 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:26:06,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:26:06,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593801584] [2024-11-10 22:26:06,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593801584] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:26:06,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:26:06,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:26:06,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608643300] [2024-11-10 22:26:06,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:26:06,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:26:06,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:26:06,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:26:06,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:26:06,675 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 104 [2024-11-10 22:26:06,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 362 transitions, 3190 flow. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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 22:26:06,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:26:06,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 104 [2024-11-10 22:26:06,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:26:10,821 INFO L124 PetriNetUnfolderBase]: 12393/25600 cut-off events. [2024-11-10 22:26:10,822 INFO L125 PetriNetUnfolderBase]: For 79543/80102 co-relation queries the response was YES. [2024-11-10 22:26:10,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79255 conditions, 25600 events. 12393/25600 cut-off events. For 79543/80102 co-relation queries the response was YES. Maximal size of possible extension queue 678. Compared 230692 event pairs, 10069 based on Foata normal form. 487/22647 useless extension candidates. Maximal degree in co-relation 79188. Up to 16529 conditions per place. [2024-11-10 22:26:11,081 INFO L140 encePairwiseOnDemand]: 96/104 looper letters, 318 selfloop transitions, 35 changer transitions 22/410 dead transitions. [2024-11-10 22:26:11,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 410 transitions, 4377 flow [2024-11-10 22:26:11,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:26:11,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:26:11,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 263 transitions. [2024-11-10 22:26:11,082 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5057692307692307 [2024-11-10 22:26:11,083 INFO L175 Difference]: Start difference. First operand has 229 places, 362 transitions, 3190 flow. Second operand 5 states and 263 transitions. [2024-11-10 22:26:11,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 410 transitions, 4377 flow [2024-11-10 22:26:11,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 410 transitions, 4260 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-11-10 22:26:11,505 INFO L231 Difference]: Finished difference. Result has 227 places, 350 transitions, 3081 flow [2024-11-10 22:26:11,506 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=3055, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3081, PETRI_PLACES=227, PETRI_TRANSITIONS=350} [2024-11-10 22:26:11,507 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, 132 predicate places. [2024-11-10 22:26:11,507 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 350 transitions, 3081 flow [2024-11-10 22:26:11,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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 22:26:11,507 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:26:11,508 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:26:11,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-10 22:26:11,508 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-10 22:26:11,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:26:11,509 INFO L85 PathProgramCache]: Analyzing trace with hash -645759558, now seen corresponding path program 1 times [2024-11-10 22:26:11,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:26:11,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870289049] [2024-11-10 22:26:11,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:26:11,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:26:11,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:26:11,581 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:26:11,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:26:11,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870289049] [2024-11-10 22:26:11,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870289049] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:26:11,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:26:11,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:26:11,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054244299] [2024-11-10 22:26:11,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:26:11,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:26:11,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:26:11,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:26:11,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:26:11,583 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 104 [2024-11-10 22:26:11,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 350 transitions, 3081 flow. Second operand has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:26:11,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:26:11,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 104 [2024-11-10 22:26:11,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:26:18,018 INFO L124 PetriNetUnfolderBase]: 22683/45164 cut-off events. [2024-11-10 22:26:18,018 INFO L125 PetriNetUnfolderBase]: For 164565/165579 co-relation queries the response was YES. [2024-11-10 22:26:18,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144489 conditions, 45164 events. 22683/45164 cut-off events. For 164565/165579 co-relation queries the response was YES. Maximal size of possible extension queue 1438. Compared 433029 event pairs, 7133 based on Foata normal form. 581/39404 useless extension candidates. Maximal degree in co-relation 144425. Up to 11844 conditions per place. [2024-11-10 22:26:18,856 INFO L140 encePairwiseOnDemand]: 100/104 looper letters, 324 selfloop transitions, 39 changer transitions 11/424 dead transitions. [2024-11-10 22:26:18,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 424 transitions, 4317 flow [2024-11-10 22:26:18,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:26:18,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:26:18,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 257 transitions. [2024-11-10 22:26:18,857 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6177884615384616 [2024-11-10 22:26:18,857 INFO L175 Difference]: Start difference. First operand has 227 places, 350 transitions, 3081 flow. Second operand 4 states and 257 transitions. [2024-11-10 22:26:18,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 424 transitions, 4317 flow [2024-11-10 22:26:19,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 424 transitions, 4286 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:26:19,862 INFO L231 Difference]: Finished difference. Result has 231 places, 354 transitions, 3308 flow [2024-11-10 22:26:19,862 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=3017, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3308, PETRI_PLACES=231, PETRI_TRANSITIONS=354} [2024-11-10 22:26:19,862 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, 136 predicate places. [2024-11-10 22:26:19,863 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 354 transitions, 3308 flow [2024-11-10 22:26:19,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:26:19,863 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:26:19,863 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:26:19,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-10 22:26:19,863 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-11-10 22:26:19,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:26:19,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1202981818, now seen corresponding path program 1 times [2024-11-10 22:26:19,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:26:19,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633716124] [2024-11-10 22:26:19,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:26:19,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:26:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:26:20,026 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:26:20,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:26:20,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633716124] [2024-11-10 22:26:20,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633716124] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:26:20,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605599559] [2024-11-10 22:26:20,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:26:20,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:26:20,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:26:20,029 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 22:26:20,032 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 22:26:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:26:20,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:26:20,146 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:26:20,202 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 22:26:20,202 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:26:20,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605599559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:26:20,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:26:20,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-11-10 22:26:20,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630935868] [2024-11-10 22:26:20,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:26:20,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:26:20,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:26:20,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:26:20,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-10 22:26:20,204 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 104 [2024-11-10 22:26:20,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 354 transitions, 3308 flow. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 22:26:20,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:26:20,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 104 [2024-11-10 22:26:20,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand