./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-name-comparator-symm.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 e3298e0ac573b72ea1dd21021e341a1c4e9f42cf513c1ea24a79ab2c37c412bc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:03:05,297 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:03:05,346 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 14:03:05,350 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:03:05,352 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:03:05,373 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:03:05,376 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:03:05,377 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:03:05,377 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:03:05,377 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:03:05,377 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 14:03:05,377 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 14:03:05,378 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:03:05,378 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:03:05,378 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:03:05,378 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:03:05,379 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 14:03:05,379 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 14:03:05,379 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:03:05,379 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 14:03:05,379 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:03:05,383 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 14:03:05,383 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 14:03:05,383 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 14:03:05,383 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:03:05,383 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 14:03:05,384 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:03:05,384 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 14:03:05,384 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:03:05,386 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:03:05,387 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:03:05,387 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:03:05,387 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 14:03:05,387 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 14:03:05,387 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:03:05,387 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:03:05,388 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 14:03:05,388 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 14:03:05,388 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:03:05,388 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 14:03:05,392 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 14:03:05,392 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 14:03:05,392 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 14:03:05,392 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 14:03:05,393 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3298e0ac573b72ea1dd21021e341a1c4e9f42cf513c1ea24a79ab2c37c412bc [2024-11-19 14:03:05,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:03:05,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:03:05,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:03:05,612 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:03:05,612 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:03:05,613 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2024-11-19 14:03:06,797 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:03:06,945 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:03:06,945 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2024-11-19 14:03:06,951 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1b14f94b/8071977ffdaa4629a3e86ecc6b157620/FLAGd710938c6 [2024-11-19 14:03:07,355 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1b14f94b/8071977ffdaa4629a3e86ecc6b157620 [2024-11-19 14:03:07,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:03:07,358 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:03:07,359 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:03:07,359 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:03:07,363 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:03:07,363 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:03:07" (1/1) ... [2024-11-19 14:03:07,364 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25dc63a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:07, skipping insertion in model container [2024-11-19 14:03:07,364 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:03:07" (1/1) ... [2024-11-19 14:03:07,386 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:03:07,559 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:03:07,566 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:03:07,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:03:07,606 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:03:07,606 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:07 WrapperNode [2024-11-19 14:03:07,606 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:03:07,607 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:03:07,607 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:03:07,607 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:03:07,612 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:07" (1/1) ... [2024-11-19 14:03:07,618 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:07" (1/1) ... [2024-11-19 14:03:07,644 INFO L138 Inliner]: procedures = 24, calls = 25, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 257 [2024-11-19 14:03:07,644 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:03:07,645 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:03:07,645 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:03:07,645 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:03:07,653 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:07" (1/1) ... [2024-11-19 14:03:07,653 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:07" (1/1) ... [2024-11-19 14:03:07,655 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:07" (1/1) ... [2024-11-19 14:03:07,667 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-19 14:03:07,667 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:07" (1/1) ... [2024-11-19 14:03:07,667 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:07" (1/1) ... [2024-11-19 14:03:07,672 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:07" (1/1) ... [2024-11-19 14:03:07,675 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:07" (1/1) ... [2024-11-19 14:03:07,676 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:07" (1/1) ... [2024-11-19 14:03:07,677 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:07" (1/1) ... [2024-11-19 14:03:07,679 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:03:07,680 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:03:07,680 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:03:07,680 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:03:07,681 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:07" (1/1) ... [2024-11-19 14:03:07,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:03:07,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:07,709 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) [2024-11-19 14:03:07,711 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 [2024-11-19 14:03:07,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 14:03:07,742 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 14:03:07,742 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 14:03:07,742 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 14:03:07,742 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 14:03:07,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 14:03:07,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 14:03:07,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 14:03:07,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 14:03:07,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 14:03:07,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:03:07,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:03:07,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 14:03:07,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 14:03:07,744 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 14:03:07,845 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:03:07,847 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:03:08,167 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 14:03:08,167 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:03:08,368 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:03:08,369 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 14:03:08,369 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:03:08 BoogieIcfgContainer [2024-11-19 14:03:08,369 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:03:08,371 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 14:03:08,371 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 14:03:08,374 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 14:03:08,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:03:07" (1/3) ... [2024-11-19 14:03:08,374 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78749e65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:03:08, skipping insertion in model container [2024-11-19 14:03:08,375 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:07" (2/3) ... [2024-11-19 14:03:08,375 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78749e65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:03:08, skipping insertion in model container [2024-11-19 14:03:08,375 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:03:08" (3/3) ... [2024-11-19 14:03:08,376 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-symm.wvr.c [2024-11-19 14:03:08,389 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 14:03:08,389 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2024-11-19 14:03:08,389 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 14:03:08,441 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 14:03:08,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 81 transitions, 176 flow [2024-11-19 14:03:08,500 INFO L124 PetriNetUnfolderBase]: 11/79 cut-off events. [2024-11-19 14:03:08,500 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 14:03:08,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 79 events. 11/79 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 247 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2024-11-19 14:03:08,504 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 81 transitions, 176 flow [2024-11-19 14:03:08,507 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 78 transitions, 168 flow [2024-11-19 14:03:08,515 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:03:08,521 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;@6b5793f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:03:08,521 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-11-19 14:03:08,524 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:03:08,524 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-19 14:03:08,524 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:03:08,524 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:08,525 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 14:03:08,525 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-19 14:03:08,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:08,529 INFO L85 PathProgramCache]: Analyzing trace with hash 755936, now seen corresponding path program 1 times [2024-11-19 14:03:08,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:08,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358508208] [2024-11-19 14:03:08,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:08,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:08,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:08,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:03:08,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:08,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358508208] [2024-11-19 14:03:08,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358508208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:08,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:03:08,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:03:08,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835927168] [2024-11-19 14:03:08,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:08,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:03:08,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:08,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:03:08,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:03:08,836 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-19 14:03:08,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 78 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2024-11-19 14:03:08,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:08,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-19 14:03:08,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:09,066 INFO L124 PetriNetUnfolderBase]: 595/1422 cut-off events. [2024-11-19 14:03:09,066 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-11-19 14:03:09,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2371 conditions, 1422 events. 595/1422 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9413 event pairs, 390 based on Foata normal form. 3/1100 useless extension candidates. Maximal degree in co-relation 2283. Up to 906 conditions per place. [2024-11-19 14:03:09,078 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 34 selfloop transitions, 4 changer transitions 2/73 dead transitions. [2024-11-19 14:03:09,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 73 transitions, 236 flow [2024-11-19 14:03:09,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:03:09,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:03:09,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 188 transitions. [2024-11-19 14:03:09,089 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5802469135802469 [2024-11-19 14:03:09,090 INFO L175 Difference]: Start difference. First operand has 74 places, 78 transitions, 168 flow. Second operand 4 states and 188 transitions. [2024-11-19 14:03:09,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 73 transitions, 236 flow [2024-11-19 14:03:09,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 73 transitions, 228 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 14:03:09,097 INFO L231 Difference]: Finished difference. Result has 70 places, 71 transitions, 153 flow [2024-11-19 14:03:09,098 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=70, PETRI_TRANSITIONS=71} [2024-11-19 14:03:09,102 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, -4 predicate places. [2024-11-19 14:03:09,102 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 71 transitions, 153 flow [2024-11-19 14:03:09,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2024-11-19 14:03:09,103 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:09,103 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-19 14:03:09,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 14:03:09,103 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-19 14:03:09,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:09,104 INFO L85 PathProgramCache]: Analyzing trace with hash 23434778, now seen corresponding path program 1 times [2024-11-19 14:03:09,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:09,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232232246] [2024-11-19 14:03:09,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:09,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:09,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:03:09,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:09,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232232246] [2024-11-19 14:03:09,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232232246] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:09,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:03:09,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:03:09,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050813845] [2024-11-19 14:03:09,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:09,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:03:09,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:09,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:03:09,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:03:09,183 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-19 14:03:09,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 71 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2024-11-19 14:03:09,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:09,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-19 14:03:09,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:09,385 INFO L124 PetriNetUnfolderBase]: 596/1424 cut-off events. [2024-11-19 14:03:09,385 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-19 14:03:09,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2357 conditions, 1424 events. 596/1424 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9407 event pairs, 390 based on Foata normal form. 1/1100 useless extension candidates. Maximal degree in co-relation 2329. Up to 910 conditions per place. [2024-11-19 14:03:09,392 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 37 selfloop transitions, 4 changer transitions 0/74 dead transitions. [2024-11-19 14:03:09,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 74 transitions, 247 flow [2024-11-19 14:03:09,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:03:09,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:03:09,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2024-11-19 14:03:09,395 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2024-11-19 14:03:09,395 INFO L175 Difference]: Start difference. First operand has 70 places, 71 transitions, 153 flow. Second operand 4 states and 186 transitions. [2024-11-19 14:03:09,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 74 transitions, 247 flow [2024-11-19 14:03:09,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 74 transitions, 233 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:03:09,398 INFO L231 Difference]: Finished difference. Result has 70 places, 74 transitions, 172 flow [2024-11-19 14:03:09,398 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=70, PETRI_TRANSITIONS=74} [2024-11-19 14:03:09,399 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, -4 predicate places. [2024-11-19 14:03:09,399 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 74 transitions, 172 flow [2024-11-19 14:03:09,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2024-11-19 14:03:09,399 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:09,399 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-19 14:03:09,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 14:03:09,399 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-19 14:03:09,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:09,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1933404232, now seen corresponding path program 1 times [2024-11-19 14:03:09,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:09,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007171586] [2024-11-19 14:03:09,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:09,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:09,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:03:09,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:09,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007171586] [2024-11-19 14:03:09,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007171586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:09,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406439648] [2024-11-19 14:03:09,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:09,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:09,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:09,512 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) [2024-11-19 14:03:09,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 14:03:09,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:09,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:03:09,578 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:09,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:03:09,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:03:09,649 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:03:09,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406439648] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:03:09,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:03:09,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-19 14:03:09,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990848133] [2024-11-19 14:03:09,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:03:09,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 14:03:09,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:09,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 14:03:09,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-19 14:03:09,660 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-19 14:03:09,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 74 transitions, 172 flow. Second operand has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 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) [2024-11-19 14:03:09,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:09,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-19 14:03:09,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:09,857 INFO L124 PetriNetUnfolderBase]: 599/1436 cut-off events. [2024-11-19 14:03:09,857 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-19 14:03:09,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2393 conditions, 1436 events. 599/1436 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9512 event pairs, 390 based on Foata normal form. 0/1108 useless extension candidates. Maximal degree in co-relation 2336. Up to 913 conditions per place. [2024-11-19 14:03:09,863 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 37 selfloop transitions, 13 changer transitions 0/83 dead transitions. [2024-11-19 14:03:09,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 83 transitions, 308 flow [2024-11-19 14:03:09,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:03:09,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:03:09,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 413 transitions. [2024-11-19 14:03:09,868 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5098765432098765 [2024-11-19 14:03:09,870 INFO L175 Difference]: Start difference. First operand has 70 places, 74 transitions, 172 flow. Second operand 10 states and 413 transitions. [2024-11-19 14:03:09,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 83 transitions, 308 flow [2024-11-19 14:03:09,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 83 transitions, 305 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:03:09,871 INFO L231 Difference]: Finished difference. Result has 81 places, 83 transitions, 249 flow [2024-11-19 14:03:09,872 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=249, PETRI_PLACES=81, PETRI_TRANSITIONS=83} [2024-11-19 14:03:09,873 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 7 predicate places. [2024-11-19 14:03:09,873 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 83 transitions, 249 flow [2024-11-19 14:03:09,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 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) [2024-11-19 14:03:09,874 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:09,874 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:09,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 14:03:10,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:10,079 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-19 14:03:10,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:10,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1814705083, now seen corresponding path program 1 times [2024-11-19 14:03:10,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:10,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187735216] [2024-11-19 14:03:10,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:10,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:10,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:03:10,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:10,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187735216] [2024-11-19 14:03:10,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187735216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:10,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:03:10,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:03:10,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623832947] [2024-11-19 14:03:10,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:10,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:03:10,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:10,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:03:10,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:03:10,143 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-19 14:03:10,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 83 transitions, 249 flow. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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) [2024-11-19 14:03:10,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:10,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-19 14:03:10,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:10,383 INFO L124 PetriNetUnfolderBase]: 1243/2844 cut-off events. [2024-11-19 14:03:10,383 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-19 14:03:10,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4816 conditions, 2844 events. 1243/2844 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 21263 event pairs, 486 based on Foata normal form. 28/2265 useless extension candidates. Maximal degree in co-relation 4780. Up to 1042 conditions per place. [2024-11-19 14:03:10,393 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 96 selfloop transitions, 3 changer transitions 0/131 dead transitions. [2024-11-19 14:03:10,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 131 transitions, 546 flow [2024-11-19 14:03:10,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:03:10,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:03:10,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 233 transitions. [2024-11-19 14:03:10,395 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7191358024691358 [2024-11-19 14:03:10,395 INFO L175 Difference]: Start difference. First operand has 81 places, 83 transitions, 249 flow. Second operand 4 states and 233 transitions. [2024-11-19 14:03:10,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 131 transitions, 546 flow [2024-11-19 14:03:10,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 131 transitions, 516 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-11-19 14:03:10,398 INFO L231 Difference]: Finished difference. Result has 83 places, 85 transitions, 241 flow [2024-11-19 14:03:10,398 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=241, PETRI_PLACES=83, PETRI_TRANSITIONS=85} [2024-11-19 14:03:10,399 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 9 predicate places. [2024-11-19 14:03:10,399 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 85 transitions, 241 flow [2024-11-19 14:03:10,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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) [2024-11-19 14:03:10,399 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:10,399 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:10,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 14:03:10,399 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-19 14:03:10,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:10,400 INFO L85 PathProgramCache]: Analyzing trace with hash -2119896660, now seen corresponding path program 1 times [2024-11-19 14:03:10,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:10,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314991615] [2024-11-19 14:03:10,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:10,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:10,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:10,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:03:10,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:10,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314991615] [2024-11-19 14:03:10,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314991615] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:10,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:03:10,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:03:10,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998013552] [2024-11-19 14:03:10,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:10,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:03:10,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:10,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:03:10,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:03:10,444 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-19 14:03:10,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 85 transitions, 241 flow. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2024-11-19 14:03:10,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:10,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-19 14:03:10,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:10,858 INFO L124 PetriNetUnfolderBase]: 2395/5268 cut-off events. [2024-11-19 14:03:10,858 INFO L125 PetriNetUnfolderBase]: For 473/547 co-relation queries the response was YES. [2024-11-19 14:03:10,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9301 conditions, 5268 events. 2395/5268 cut-off events. For 473/547 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 42873 event pairs, 1004 based on Foata normal form. 52/4351 useless extension candidates. Maximal degree in co-relation 9267. Up to 2071 conditions per place. [2024-11-19 14:03:10,882 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 99 selfloop transitions, 3 changer transitions 0/134 dead transitions. [2024-11-19 14:03:10,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 134 transitions, 573 flow [2024-11-19 14:03:10,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:03:10,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:03:10,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 230 transitions. [2024-11-19 14:03:10,883 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7098765432098766 [2024-11-19 14:03:10,883 INFO L175 Difference]: Start difference. First operand has 83 places, 85 transitions, 241 flow. Second operand 4 states and 230 transitions. [2024-11-19 14:03:10,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 134 transitions, 573 flow [2024-11-19 14:03:10,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 134 transitions, 567 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:03:10,887 INFO L231 Difference]: Finished difference. Result has 87 places, 87 transitions, 261 flow [2024-11-19 14:03:10,887 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=261, PETRI_PLACES=87, PETRI_TRANSITIONS=87} [2024-11-19 14:03:10,887 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 13 predicate places. [2024-11-19 14:03:10,888 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 87 transitions, 261 flow [2024-11-19 14:03:10,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2024-11-19 14:03:10,889 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:10,889 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:10,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 14:03:10,891 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-19 14:03:10,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:10,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1126064715, now seen corresponding path program 1 times [2024-11-19 14:03:10,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:10,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014356363] [2024-11-19 14:03:10,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:10,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:10,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:03:10,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:10,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014356363] [2024-11-19 14:03:10,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014356363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:10,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:03:10,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 14:03:10,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956028091] [2024-11-19 14:03:10,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:10,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:03:10,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:10,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:03:10,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:03:10,947 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 81 [2024-11-19 14:03:10,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 87 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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) [2024-11-19 14:03:10,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:10,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 81 [2024-11-19 14:03:10,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:11,312 INFO L124 PetriNetUnfolderBase]: 1925/4173 cut-off events. [2024-11-19 14:03:11,312 INFO L125 PetriNetUnfolderBase]: For 615/681 co-relation queries the response was YES. [2024-11-19 14:03:11,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7937 conditions, 4173 events. 1925/4173 cut-off events. For 615/681 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 31837 event pairs, 754 based on Foata normal form. 0/3624 useless extension candidates. Maximal degree in co-relation 7901. Up to 1687 conditions per place. [2024-11-19 14:03:11,331 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 108 selfloop transitions, 4 changer transitions 6/152 dead transitions. [2024-11-19 14:03:11,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 152 transitions, 674 flow [2024-11-19 14:03:11,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:03:11,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:03:11,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 289 transitions. [2024-11-19 14:03:11,334 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7135802469135802 [2024-11-19 14:03:11,334 INFO L175 Difference]: Start difference. First operand has 87 places, 87 transitions, 261 flow. Second operand 5 states and 289 transitions. [2024-11-19 14:03:11,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 152 transitions, 674 flow [2024-11-19 14:03:11,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 152 transitions, 666 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:03:11,337 INFO L231 Difference]: Finished difference. Result has 93 places, 89 transitions, 284 flow [2024-11-19 14:03:11,338 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=284, PETRI_PLACES=93, PETRI_TRANSITIONS=89} [2024-11-19 14:03:11,338 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 19 predicate places. [2024-11-19 14:03:11,338 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 89 transitions, 284 flow [2024-11-19 14:03:11,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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) [2024-11-19 14:03:11,338 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:11,338 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:11,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 14:03:11,339 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-19 14:03:11,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:11,339 INFO L85 PathProgramCache]: Analyzing trace with hash -513898147, now seen corresponding path program 1 times [2024-11-19 14:03:11,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:11,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597630957] [2024-11-19 14:03:11,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:11,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:11,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:11,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:03:11,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:11,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597630957] [2024-11-19 14:03:11,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597630957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:11,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:03:11,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:03:11,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547795377] [2024-11-19 14:03:11,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:11,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:03:11,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:11,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:03:11,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:03:11,381 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 81 [2024-11-19 14:03:11,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 89 transitions, 284 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-19 14:03:11,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:11,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 81 [2024-11-19 14:03:11,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:11,658 INFO L124 PetriNetUnfolderBase]: 1832/4355 cut-off events. [2024-11-19 14:03:11,659 INFO L125 PetriNetUnfolderBase]: For 1245/1279 co-relation queries the response was YES. [2024-11-19 14:03:11,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8438 conditions, 4355 events. 1832/4355 cut-off events. For 1245/1279 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 35297 event pairs, 1375 based on Foata normal form. 1/3721 useless extension candidates. Maximal degree in co-relation 8404. Up to 2865 conditions per place. [2024-11-19 14:03:11,677 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 52 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2024-11-19 14:03:11,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 88 transitions, 388 flow [2024-11-19 14:03:11,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:03:11,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:03:11,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 154 transitions. [2024-11-19 14:03:11,679 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6337448559670782 [2024-11-19 14:03:11,679 INFO L175 Difference]: Start difference. First operand has 93 places, 89 transitions, 284 flow. Second operand 3 states and 154 transitions. [2024-11-19 14:03:11,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 88 transitions, 388 flow [2024-11-19 14:03:11,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 88 transitions, 388 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:03:11,682 INFO L231 Difference]: Finished difference. Result has 95 places, 88 transitions, 284 flow [2024-11-19 14:03:11,682 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=284, PETRI_PLACES=95, PETRI_TRANSITIONS=88} [2024-11-19 14:03:11,683 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 21 predicate places. [2024-11-19 14:03:11,683 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 88 transitions, 284 flow [2024-11-19 14:03:11,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-19 14:03:11,683 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:11,683 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:11,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 14:03:11,683 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-19 14:03:11,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:11,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1099438591, now seen corresponding path program 1 times [2024-11-19 14:03:11,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:11,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108702679] [2024-11-19 14:03:11,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:11,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:11,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:11,741 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:03:11,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:11,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108702679] [2024-11-19 14:03:11,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108702679] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:11,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453148430] [2024-11-19 14:03:11,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:11,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:11,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:11,744 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) [2024-11-19 14:03:11,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 14:03:11,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:11,811 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 14:03:11,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:11,844 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:03:11,844 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:03:11,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:03:11,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453148430] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:03:11,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:03:11,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-19 14:03:11,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798844727] [2024-11-19 14:03:11,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:03:11,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 14:03:11,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:11,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 14:03:11,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-19 14:03:11,883 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-19 14:03:11,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 88 transitions, 284 flow. Second operand has 10 states, 10 states have (on average 37.7) internal successors, (377), 10 states have internal predecessors, (377), 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) [2024-11-19 14:03:11,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:11,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-19 14:03:11,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:12,214 INFO L124 PetriNetUnfolderBase]: 1830/4353 cut-off events. [2024-11-19 14:03:12,214 INFO L125 PetriNetUnfolderBase]: For 1251/1285 co-relation queries the response was YES. [2024-11-19 14:03:12,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8436 conditions, 4353 events. 1830/4353 cut-off events. For 1251/1285 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 35279 event pairs, 1375 based on Foata normal form. 2/3720 useless extension candidates. Maximal degree in co-relation 8408. Up to 2857 conditions per place. [2024-11-19 14:03:12,229 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 43 selfloop transitions, 10 changer transitions 0/86 dead transitions. [2024-11-19 14:03:12,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 86 transitions, 382 flow [2024-11-19 14:03:12,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 14:03:12,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 14:03:12,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 297 transitions. [2024-11-19 14:03:12,231 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-11-19 14:03:12,231 INFO L175 Difference]: Start difference. First operand has 95 places, 88 transitions, 284 flow. Second operand 7 states and 297 transitions. [2024-11-19 14:03:12,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 86 transitions, 382 flow [2024-11-19 14:03:12,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 86 transitions, 378 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:03:12,234 INFO L231 Difference]: Finished difference. Result has 99 places, 86 transitions, 292 flow [2024-11-19 14:03:12,234 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=292, PETRI_PLACES=99, PETRI_TRANSITIONS=86} [2024-11-19 14:03:12,234 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 25 predicate places. [2024-11-19 14:03:12,235 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 86 transitions, 292 flow [2024-11-19 14:03:12,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 37.7) internal successors, (377), 10 states have internal predecessors, (377), 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) [2024-11-19 14:03:12,235 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:12,235 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-19 14:03:12,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 14:03:12,435 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,SelfDestructingSolverStorable7 [2024-11-19 14:03:12,436 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-19 14:03:12,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:12,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1023767398, now seen corresponding path program 2 times [2024-11-19 14:03:12,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:12,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319182947] [2024-11-19 14:03:12,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:03:12,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:12,450 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:03:12,450 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:03:12,469 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:03:12,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:12,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319182947] [2024-11-19 14:03:12,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319182947] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:12,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720401362] [2024-11-19 14:03:12,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:03:12,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:12,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:12,472 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) [2024-11-19 14:03:12,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 14:03:12,525 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:03:12,525 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:03:12,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:03:12,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:12,553 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:03:12,554 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:03:12,579 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:03:12,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720401362] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:03:12,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:03:12,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2024-11-19 14:03:12,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448068064] [2024-11-19 14:03:12,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:03:12,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:03:12,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:12,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:03:12,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 14:03:12,586 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-19 14:03:12,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 86 transitions, 292 flow. Second operand has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 6 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:03:12,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:12,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-19 14:03:12,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:12,952 INFO L124 PetriNetUnfolderBase]: 1830/4352 cut-off events. [2024-11-19 14:03:12,953 INFO L125 PetriNetUnfolderBase]: For 1260/1294 co-relation queries the response was YES. [2024-11-19 14:03:12,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8438 conditions, 4352 events. 1830/4352 cut-off events. For 1260/1294 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 35269 event pairs, 1375 based on Foata normal form. 1/3719 useless extension candidates. Maximal degree in co-relation 8404. Up to 2854 conditions per place. [2024-11-19 14:03:12,976 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 39 selfloop transitions, 13 changer transitions 0/85 dead transitions. [2024-11-19 14:03:12,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 85 transitions, 386 flow [2024-11-19 14:03:12,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:03:12,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:03:12,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 182 transitions. [2024-11-19 14:03:12,981 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5617283950617284 [2024-11-19 14:03:12,981 INFO L175 Difference]: Start difference. First operand has 99 places, 86 transitions, 292 flow. Second operand 4 states and 182 transitions. [2024-11-19 14:03:12,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 85 transitions, 386 flow [2024-11-19 14:03:12,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 85 transitions, 368 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-19 14:03:12,986 INFO L231 Difference]: Finished difference. Result has 93 places, 85 transitions, 290 flow [2024-11-19 14:03:12,986 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=290, PETRI_PLACES=93, PETRI_TRANSITIONS=85} [2024-11-19 14:03:12,987 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 19 predicate places. [2024-11-19 14:03:12,987 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 85 transitions, 290 flow [2024-11-19 14:03:12,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 6 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:03:12,988 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:12,988 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:13,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 14:03:13,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:13,189 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-19 14:03:13,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:13,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1628619457, now seen corresponding path program 2 times [2024-11-19 14:03:13,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:13,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826861257] [2024-11-19 14:03:13,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:03:13,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:13,209 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:03:13,210 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:03:13,282 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:03:13,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:13,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826861257] [2024-11-19 14:03:13,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826861257] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:13,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711466263] [2024-11-19 14:03:13,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:03:13,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:13,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:13,285 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) [2024-11-19 14:03:13,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 14:03:13,354 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:03:13,354 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:03:13,355 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:03:13,356 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:13,384 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:03:13,384 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:03:13,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711466263] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:13,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:03:13,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-19 14:03:13,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521820496] [2024-11-19 14:03:13,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:13,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:03:13,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:13,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:03:13,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 14:03:13,389 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-11-19 14:03:13,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 85 transitions, 290 flow. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 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) [2024-11-19 14:03:13,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:13,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-11-19 14:03:13,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:13,698 INFO L124 PetriNetUnfolderBase]: 2121/4628 cut-off events. [2024-11-19 14:03:13,698 INFO L125 PetriNetUnfolderBase]: For 1160/1176 co-relation queries the response was YES. [2024-11-19 14:03:13,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9249 conditions, 4628 events. 2121/4628 cut-off events. For 1160/1176 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 35745 event pairs, 1273 based on Foata normal form. 52/4008 useless extension candidates. Maximal degree in co-relation 9178. Up to 2638 conditions per place. [2024-11-19 14:03:13,716 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 68 selfloop transitions, 5 changer transitions 0/103 dead transitions. [2024-11-19 14:03:13,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 103 transitions, 483 flow [2024-11-19 14:03:13,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:03:13,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:03:13,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 197 transitions. [2024-11-19 14:03:13,717 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6080246913580247 [2024-11-19 14:03:13,717 INFO L175 Difference]: Start difference. First operand has 93 places, 85 transitions, 290 flow. Second operand 4 states and 197 transitions. [2024-11-19 14:03:13,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 103 transitions, 483 flow [2024-11-19 14:03:13,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 103 transitions, 457 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:03:13,721 INFO L231 Difference]: Finished difference. Result has 92 places, 84 transitions, 270 flow [2024-11-19 14:03:13,721 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=270, PETRI_PLACES=92, PETRI_TRANSITIONS=84} [2024-11-19 14:03:13,722 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 18 predicate places. [2024-11-19 14:03:13,722 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 84 transitions, 270 flow [2024-11-19 14:03:13,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 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) [2024-11-19 14:03:13,722 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:13,722 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:13,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 14:03:13,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:13,923 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-19 14:03:13,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:13,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1052405208, now seen corresponding path program 1 times [2024-11-19 14:03:13,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:13,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980642962] [2024-11-19 14:03:13,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:13,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:13,968 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-19 14:03:13,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:13,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980642962] [2024-11-19 14:03:13,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980642962] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:13,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:03:13,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:03:13,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841052240] [2024-11-19 14:03:13,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:13,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:03:13,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:13,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:03:13,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:03:13,972 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-19 14:03:13,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 84 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2024-11-19 14:03:13,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:13,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-19 14:03:13,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:14,244 INFO L124 PetriNetUnfolderBase]: 1854/4293 cut-off events. [2024-11-19 14:03:14,244 INFO L125 PetriNetUnfolderBase]: For 1884/1892 co-relation queries the response was YES. [2024-11-19 14:03:14,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8580 conditions, 4293 events. 1854/4293 cut-off events. For 1884/1892 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 33903 event pairs, 1249 based on Foata normal form. 52/3753 useless extension candidates. Maximal degree in co-relation 8520. Up to 2639 conditions per place. [2024-11-19 14:03:14,259 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 67 selfloop transitions, 4 changer transitions 0/102 dead transitions. [2024-11-19 14:03:14,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 102 transitions, 459 flow [2024-11-19 14:03:14,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:03:14,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:03:14,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2024-11-19 14:03:14,261 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6707818930041153 [2024-11-19 14:03:14,261 INFO L175 Difference]: Start difference. First operand has 92 places, 84 transitions, 270 flow. Second operand 3 states and 163 transitions. [2024-11-19 14:03:14,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 102 transitions, 459 flow [2024-11-19 14:03:14,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 102 transitions, 449 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:03:14,265 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 264 flow [2024-11-19 14:03:14,265 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2024-11-19 14:03:14,265 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 16 predicate places. [2024-11-19 14:03:14,266 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 264 flow [2024-11-19 14:03:14,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2024-11-19 14:03:14,266 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:14,266 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:14,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 14:03:14,266 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-19 14:03:14,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:14,266 INFO L85 PathProgramCache]: Analyzing trace with hash -839160949, now seen corresponding path program 1 times [2024-11-19 14:03:14,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:14,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408641260] [2024-11-19 14:03:14,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:14,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:14,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:14,303 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:03:14,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:14,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408641260] [2024-11-19 14:03:14,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408641260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:14,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:03:14,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 14:03:14,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054527752] [2024-11-19 14:03:14,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:14,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:03:14,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:14,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:03:14,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:03:14,306 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 81 [2024-11-19 14:03:14,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 264 flow. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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) [2024-11-19 14:03:14,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:14,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 81 [2024-11-19 14:03:14,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:14,569 INFO L124 PetriNetUnfolderBase]: 1579/3454 cut-off events. [2024-11-19 14:03:14,569 INFO L125 PetriNetUnfolderBase]: For 1689/1697 co-relation queries the response was YES. [2024-11-19 14:03:14,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7300 conditions, 3454 events. 1579/3454 cut-off events. For 1689/1697 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 24211 event pairs, 719 based on Foata normal form. 0/3103 useless extension candidates. Maximal degree in co-relation 7241. Up to 1483 conditions per place. [2024-11-19 14:03:14,583 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 102 selfloop transitions, 4 changer transitions 12/149 dead transitions. [2024-11-19 14:03:14,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 149 transitions, 758 flow [2024-11-19 14:03:14,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:03:14,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:03:14,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 284 transitions. [2024-11-19 14:03:14,584 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7012345679012346 [2024-11-19 14:03:14,584 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 264 flow. Second operand 5 states and 284 transitions. [2024-11-19 14:03:14,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 149 transitions, 758 flow [2024-11-19 14:03:14,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 149 transitions, 726 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:03:14,588 INFO L231 Difference]: Finished difference. Result has 95 places, 85 transitions, 281 flow [2024-11-19 14:03:14,588 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=281, PETRI_PLACES=95, PETRI_TRANSITIONS=85} [2024-11-19 14:03:14,589 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 21 predicate places. [2024-11-19 14:03:14,590 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 85 transitions, 281 flow [2024-11-19 14:03:14,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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) [2024-11-19 14:03:14,590 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:14,590 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:14,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 14:03:14,590 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-19 14:03:14,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:14,591 INFO L85 PathProgramCache]: Analyzing trace with hash -209815962, now seen corresponding path program 1 times [2024-11-19 14:03:14,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:14,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917603124] [2024-11-19 14:03:14,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:14,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:14,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:14,650 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:03:14,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:14,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917603124] [2024-11-19 14:03:14,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917603124] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:14,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403787969] [2024-11-19 14:03:14,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:14,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:14,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:14,653 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) [2024-11-19 14:03:14,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 14:03:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:14,720 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:03:14,721 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:14,740 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:03:14,740 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:03:14,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403787969] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:14,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:03:14,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-19 14:03:14,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367122417] [2024-11-19 14:03:14,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:14,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:03:14,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:14,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:03:14,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:03:14,746 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-19 14:03:14,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 85 transitions, 281 flow. Second operand has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 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) [2024-11-19 14:03:14,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:14,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-19 14:03:14,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:15,080 INFO L124 PetriNetUnfolderBase]: 1668/3471 cut-off events. [2024-11-19 14:03:15,081 INFO L125 PetriNetUnfolderBase]: For 1768/1768 co-relation queries the response was YES. [2024-11-19 14:03:15,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7809 conditions, 3471 events. 1668/3471 cut-off events. For 1768/1768 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 23481 event pairs, 77 based on Foata normal form. 47/3211 useless extension candidates. Maximal degree in co-relation 7748. Up to 1461 conditions per place. [2024-11-19 14:03:15,094 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 133 selfloop transitions, 5 changer transitions 0/167 dead transitions. [2024-11-19 14:03:15,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 167 transitions, 855 flow [2024-11-19 14:03:15,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:03:15,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:03:15,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 326 transitions. [2024-11-19 14:03:15,095 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6707818930041153 [2024-11-19 14:03:15,095 INFO L175 Difference]: Start difference. First operand has 95 places, 85 transitions, 281 flow. Second operand 6 states and 326 transitions. [2024-11-19 14:03:15,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 167 transitions, 855 flow [2024-11-19 14:03:15,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 167 transitions, 855 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:03:15,100 INFO L231 Difference]: Finished difference. Result has 99 places, 84 transitions, 287 flow [2024-11-19 14:03:15,101 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=287, PETRI_PLACES=99, PETRI_TRANSITIONS=84} [2024-11-19 14:03:15,101 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 25 predicate places. [2024-11-19 14:03:15,101 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 84 transitions, 287 flow [2024-11-19 14:03:15,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 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) [2024-11-19 14:03:15,102 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:15,102 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:15,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 14:03:15,305 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,SelfDestructingSolverStorable12 [2024-11-19 14:03:15,306 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-19 14:03:15,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:15,306 INFO L85 PathProgramCache]: Analyzing trace with hash 2043007611, now seen corresponding path program 1 times [2024-11-19 14:03:15,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:15,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813831431] [2024-11-19 14:03:15,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:15,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:15,369 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:03:15,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:15,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813831431] [2024-11-19 14:03:15,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813831431] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:15,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405350789] [2024-11-19 14:03:15,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:15,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:15,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:15,372 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) [2024-11-19 14:03:15,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 14:03:15,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:15,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 14:03:15,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:15,458 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-19 14:03:15,459 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:03:15,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405350789] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:15,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:03:15,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-19 14:03:15,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849237818] [2024-11-19 14:03:15,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:15,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:03:15,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:15,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:03:15,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:03:15,480 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 81 [2024-11-19 14:03:15,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 84 transitions, 287 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 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) [2024-11-19 14:03:15,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:15,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 81 [2024-11-19 14:03:15,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:15,899 INFO L124 PetriNetUnfolderBase]: 2052/4520 cut-off events. [2024-11-19 14:03:15,900 INFO L125 PetriNetUnfolderBase]: For 2967/2981 co-relation queries the response was YES. [2024-11-19 14:03:15,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9903 conditions, 4520 events. 2052/4520 cut-off events. For 2967/2981 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 33454 event pairs, 1243 based on Foata normal form. 92/4135 useless extension candidates. Maximal degree in co-relation 9841. Up to 2440 conditions per place. [2024-11-19 14:03:15,924 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 119 selfloop transitions, 6 changer transitions 0/150 dead transitions. [2024-11-19 14:03:15,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 150 transitions, 801 flow [2024-11-19 14:03:15,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:03:15,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:03:15,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 264 transitions. [2024-11-19 14:03:15,926 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6518518518518519 [2024-11-19 14:03:15,926 INFO L175 Difference]: Start difference. First operand has 99 places, 84 transitions, 287 flow. Second operand 5 states and 264 transitions. [2024-11-19 14:03:15,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 150 transitions, 801 flow [2024-11-19 14:03:15,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 150 transitions, 765 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-19 14:03:15,931 INFO L231 Difference]: Finished difference. Result has 101 places, 86 transitions, 314 flow [2024-11-19 14:03:15,931 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=314, PETRI_PLACES=101, PETRI_TRANSITIONS=86} [2024-11-19 14:03:15,932 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 27 predicate places. [2024-11-19 14:03:15,932 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 86 transitions, 314 flow [2024-11-19 14:03:15,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 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) [2024-11-19 14:03:15,932 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:15,933 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:15,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 14:03:16,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:16,140 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-19 14:03:16,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:16,140 INFO L85 PathProgramCache]: Analyzing trace with hash 2085640624, now seen corresponding path program 1 times [2024-11-19 14:03:16,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:16,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766462783] [2024-11-19 14:03:16,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:16,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:16,187 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-19 14:03:16,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:16,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766462783] [2024-11-19 14:03:16,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766462783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:16,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:03:16,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:03:16,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756684562] [2024-11-19 14:03:16,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:16,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:03:16,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:16,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:03:16,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:03:16,192 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-19 14:03:16,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 86 transitions, 314 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-19 14:03:16,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:16,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-19 14:03:16,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:16,499 INFO L124 PetriNetUnfolderBase]: 1737/4045 cut-off events. [2024-11-19 14:03:16,499 INFO L125 PetriNetUnfolderBase]: For 2639/2665 co-relation queries the response was YES. [2024-11-19 14:03:16,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9074 conditions, 4045 events. 1737/4045 cut-off events. For 2639/2665 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 30444 event pairs, 1286 based on Foata normal form. 67/3735 useless extension candidates. Maximal degree in co-relation 9011. Up to 2525 conditions per place. [2024-11-19 14:03:16,518 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 74 selfloop transitions, 4 changer transitions 0/107 dead transitions. [2024-11-19 14:03:16,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 107 transitions, 565 flow [2024-11-19 14:03:16,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:03:16,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:03:16,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 162 transitions. [2024-11-19 14:03:16,520 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-19 14:03:16,520 INFO L175 Difference]: Start difference. First operand has 101 places, 86 transitions, 314 flow. Second operand 3 states and 162 transitions. [2024-11-19 14:03:16,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 107 transitions, 565 flow [2024-11-19 14:03:16,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 107 transitions, 558 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-19 14:03:16,526 INFO L231 Difference]: Finished difference. Result has 100 places, 85 transitions, 312 flow [2024-11-19 14:03:16,526 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=312, PETRI_PLACES=100, PETRI_TRANSITIONS=85} [2024-11-19 14:03:16,527 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 26 predicate places. [2024-11-19 14:03:16,527 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 85 transitions, 312 flow [2024-11-19 14:03:16,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-19 14:03:16,527 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:16,527 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:16,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 14:03:16,527 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-19 14:03:16,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:16,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1091272669, now seen corresponding path program 1 times [2024-11-19 14:03:16,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:16,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661852983] [2024-11-19 14:03:16,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:16,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:16,597 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:03:16,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:16,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661852983] [2024-11-19 14:03:16,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661852983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:16,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060216587] [2024-11-19 14:03:16,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:16,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:16,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:16,600 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) [2024-11-19 14:03:16,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 14:03:16,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:16,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:03:16,663 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:16,702 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-19 14:03:16,702 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:03:16,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060216587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:16,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:03:16,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2024-11-19 14:03:16,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095864541] [2024-11-19 14:03:16,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:16,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:03:16,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:16,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:03:16,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:03:16,715 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-11-19 14:03:16,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 85 transitions, 312 flow. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2024-11-19 14:03:16,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:16,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-11-19 14:03:16,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:16,975 INFO L124 PetriNetUnfolderBase]: 1835/4181 cut-off events. [2024-11-19 14:03:16,975 INFO L125 PetriNetUnfolderBase]: For 2893/2897 co-relation queries the response was YES. [2024-11-19 14:03:16,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9545 conditions, 4181 events. 1835/4181 cut-off events. For 2893/2897 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 30944 event pairs, 1060 based on Foata normal form. 50/3874 useless extension candidates. Maximal degree in co-relation 9482. Up to 2026 conditions per place. [2024-11-19 14:03:16,996 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 74 selfloop transitions, 4 changer transitions 0/105 dead transitions. [2024-11-19 14:03:16,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 105 transitions, 547 flow [2024-11-19 14:03:16,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:03:16,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:03:16,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 196 transitions. [2024-11-19 14:03:16,997 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6049382716049383 [2024-11-19 14:03:16,997 INFO L175 Difference]: Start difference. First operand has 100 places, 85 transitions, 312 flow. Second operand 4 states and 196 transitions. [2024-11-19 14:03:16,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 105 transitions, 547 flow [2024-11-19 14:03:17,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 105 transitions, 531 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:03:17,003 INFO L231 Difference]: Finished difference. Result has 100 places, 84 transitions, 310 flow [2024-11-19 14:03:17,003 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=310, PETRI_PLACES=100, PETRI_TRANSITIONS=84} [2024-11-19 14:03:17,004 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 26 predicate places. [2024-11-19 14:03:17,004 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 84 transitions, 310 flow [2024-11-19 14:03:17,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2024-11-19 14:03:17,004 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:17,004 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:17,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 14:03:17,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:17,205 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-19 14:03:17,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:17,206 INFO L85 PathProgramCache]: Analyzing trace with hash 530254687, now seen corresponding path program 1 times [2024-11-19 14:03:17,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:17,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283991377] [2024-11-19 14:03:17,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:17,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:17,278 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:03:17,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:17,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283991377] [2024-11-19 14:03:17,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283991377] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:17,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462599907] [2024-11-19 14:03:17,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:17,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:17,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:17,281 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) [2024-11-19 14:03:17,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 14:03:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:17,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:03:17,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:17,386 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-19 14:03:17,389 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:03:17,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462599907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:17,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:03:17,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2024-11-19 14:03:17,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642739471] [2024-11-19 14:03:17,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:17,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:03:17,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:17,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:03:17,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:03:17,403 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 81 [2024-11-19 14:03:17,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 84 transitions, 310 flow. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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) [2024-11-19 14:03:17,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:17,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 81 [2024-11-19 14:03:17,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:17,661 INFO L124 PetriNetUnfolderBase]: 1839/4143 cut-off events. [2024-11-19 14:03:17,661 INFO L125 PetriNetUnfolderBase]: For 2939/2943 co-relation queries the response was YES. [2024-11-19 14:03:17,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9450 conditions, 4143 events. 1839/4143 cut-off events. For 2939/2943 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 30319 event pairs, 1060 based on Foata normal form. 50/3836 useless extension candidates. Maximal degree in co-relation 9386. Up to 2026 conditions per place. [2024-11-19 14:03:17,676 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 75 selfloop transitions, 4 changer transitions 0/104 dead transitions. [2024-11-19 14:03:17,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 104 transitions, 537 flow [2024-11-19 14:03:17,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:03:17,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:03:17,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 192 transitions. [2024-11-19 14:03:17,678 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-11-19 14:03:17,678 INFO L175 Difference]: Start difference. First operand has 100 places, 84 transitions, 310 flow. Second operand 4 states and 192 transitions. [2024-11-19 14:03:17,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 104 transitions, 537 flow [2024-11-19 14:03:17,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 104 transitions, 529 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:03:17,684 INFO L231 Difference]: Finished difference. Result has 99 places, 83 transitions, 306 flow [2024-11-19 14:03:17,684 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=306, PETRI_PLACES=99, PETRI_TRANSITIONS=83} [2024-11-19 14:03:17,684 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 25 predicate places. [2024-11-19 14:03:17,684 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 83 transitions, 306 flow [2024-11-19 14:03:17,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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) [2024-11-19 14:03:17,685 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:17,685 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:17,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-19 14:03:17,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-19 14:03:17,890 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-19 14:03:17,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:17,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1450169293, now seen corresponding path program 1 times [2024-11-19 14:03:17,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:17,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955530448] [2024-11-19 14:03:17,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:17,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:17,951 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:03:17,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:17,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955530448] [2024-11-19 14:03:17,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955530448] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:17,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543500386] [2024-11-19 14:03:17,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:17,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:17,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:17,953 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) [2024-11-19 14:03:17,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 14:03:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:18,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 14:03:18,021 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:18,043 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-19 14:03:18,043 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:03:18,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543500386] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:18,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:03:18,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-19 14:03:18,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897557458] [2024-11-19 14:03:18,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:18,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:03:18,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:18,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:03:18,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:03:18,059 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 81 [2024-11-19 14:03:18,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 83 transitions, 306 flow. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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) [2024-11-19 14:03:18,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:18,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 81 [2024-11-19 14:03:18,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:18,388 INFO L124 PetriNetUnfolderBase]: 2334/5040 cut-off events. [2024-11-19 14:03:18,388 INFO L125 PetriNetUnfolderBase]: For 3348/3378 co-relation queries the response was YES. [2024-11-19 14:03:18,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11418 conditions, 5040 events. 2334/5040 cut-off events. For 3348/3378 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 37370 event pairs, 1423 based on Foata normal form. 132/4710 useless extension candidates. Maximal degree in co-relation 11354. Up to 2766 conditions per place. [2024-11-19 14:03:18,406 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 124 selfloop transitions, 6 changer transitions 0/152 dead transitions. [2024-11-19 14:03:18,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 152 transitions, 884 flow [2024-11-19 14:03:18,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:03:18,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:03:18,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 261 transitions. [2024-11-19 14:03:18,407 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2024-11-19 14:03:18,407 INFO L175 Difference]: Start difference. First operand has 99 places, 83 transitions, 306 flow. Second operand 5 states and 261 transitions. [2024-11-19 14:03:18,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 152 transitions, 884 flow [2024-11-19 14:03:18,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 152 transitions, 858 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:03:18,413 INFO L231 Difference]: Finished difference. Result has 102 places, 85 transitions, 334 flow [2024-11-19 14:03:18,413 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=334, PETRI_PLACES=102, PETRI_TRANSITIONS=85} [2024-11-19 14:03:18,413 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 28 predicate places. [2024-11-19 14:03:18,413 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 85 transitions, 334 flow [2024-11-19 14:03:18,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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) [2024-11-19 14:03:18,414 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:18,414 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:18,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-19 14:03:18,614 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,SelfDestructingSolverStorable17 [2024-11-19 14:03:18,614 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-19 14:03:18,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:18,615 INFO L85 PathProgramCache]: Analyzing trace with hash -741974075, now seen corresponding path program 1 times [2024-11-19 14:03:18,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:18,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963198493] [2024-11-19 14:03:18,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:18,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:18,669 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:03:18,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:18,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963198493] [2024-11-19 14:03:18,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963198493] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:18,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59902386] [2024-11-19 14:03:18,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:18,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:18,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:18,671 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) [2024-11-19 14:03:18,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 14:03:18,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:18,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 14:03:18,735 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:18,810 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-19 14:03:18,811 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:03:18,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59902386] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:18,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:03:18,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2024-11-19 14:03:18,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857629501] [2024-11-19 14:03:18,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:18,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:03:18,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:18,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:03:18,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-19 14:03:18,837 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 81 [2024-11-19 14:03:18,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 85 transitions, 334 flow. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 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) [2024-11-19 14:03:18,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:18,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 81 [2024-11-19 14:03:18,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:19,206 INFO L124 PetriNetUnfolderBase]: 2191/4929 cut-off events. [2024-11-19 14:03:19,206 INFO L125 PetriNetUnfolderBase]: For 3601/3625 co-relation queries the response was YES. [2024-11-19 14:03:19,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11567 conditions, 4929 events. 2191/4929 cut-off events. For 3601/3625 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 37289 event pairs, 1547 based on Foata normal form. 114/4765 useless extension candidates. Maximal degree in co-relation 11502. Up to 2936 conditions per place. [2024-11-19 14:03:19,222 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 125 selfloop transitions, 6 changer transitions 0/154 dead transitions. [2024-11-19 14:03:19,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 154 transitions, 886 flow [2024-11-19 14:03:19,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:03:19,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:03:19,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 288 transitions. [2024-11-19 14:03:19,223 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-11-19 14:03:19,223 INFO L175 Difference]: Start difference. First operand has 102 places, 85 transitions, 334 flow. Second operand 6 states and 288 transitions. [2024-11-19 14:03:19,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 154 transitions, 886 flow [2024-11-19 14:03:19,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 154 transitions, 878 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:03:19,231 INFO L231 Difference]: Finished difference. Result has 106 places, 84 transitions, 339 flow [2024-11-19 14:03:19,232 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=339, PETRI_PLACES=106, PETRI_TRANSITIONS=84} [2024-11-19 14:03:19,232 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 32 predicate places. [2024-11-19 14:03:19,232 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 84 transitions, 339 flow [2024-11-19 14:03:19,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 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) [2024-11-19 14:03:19,232 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:19,232 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:19,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 14:03:19,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:19,433 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-19 14:03:19,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:19,433 INFO L85 PathProgramCache]: Analyzing trace with hash -2005574262, now seen corresponding path program 1 times [2024-11-19 14:03:19,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:19,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672852438] [2024-11-19 14:03:19,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:19,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:19,479 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:03:19,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:19,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672852438] [2024-11-19 14:03:19,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672852438] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:19,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315173889] [2024-11-19 14:03:19,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:19,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:19,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:19,481 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) [2024-11-19 14:03:19,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 14:03:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:19,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:03:19,558 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:19,588 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-19 14:03:19,588 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:03:19,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315173889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:19,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:03:19,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2024-11-19 14:03:19,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211556427] [2024-11-19 14:03:19,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:19,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:03:19,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:19,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:03:19,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:03:19,598 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-11-19 14:03:19,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 84 transitions, 339 flow. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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) [2024-11-19 14:03:19,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:19,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-11-19 14:03:19,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:19,856 INFO L124 PetriNetUnfolderBase]: 2067/4676 cut-off events. [2024-11-19 14:03:19,856 INFO L125 PetriNetUnfolderBase]: For 3759/3783 co-relation queries the response was YES. [2024-11-19 14:03:19,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11191 conditions, 4676 events. 2067/4676 cut-off events. For 3759/3783 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 35320 event pairs, 1200 based on Foata normal form. 75/4463 useless extension candidates. Maximal degree in co-relation 11124. Up to 2314 conditions per place. [2024-11-19 14:03:19,874 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 77 selfloop transitions, 4 changer transitions 0/105 dead transitions. [2024-11-19 14:03:19,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 105 transitions, 604 flow [2024-11-19 14:03:19,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:03:19,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:03:19,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2024-11-19 14:03:19,875 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6018518518518519 [2024-11-19 14:03:19,875 INFO L175 Difference]: Start difference. First operand has 106 places, 84 transitions, 339 flow. Second operand 4 states and 195 transitions. [2024-11-19 14:03:19,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 105 transitions, 604 flow [2024-11-19 14:03:19,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 105 transitions, 586 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 14:03:19,884 INFO L231 Difference]: Finished difference. Result has 104 places, 83 transitions, 334 flow [2024-11-19 14:03:19,884 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=334, PETRI_PLACES=104, PETRI_TRANSITIONS=83} [2024-11-19 14:03:19,884 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 30 predicate places. [2024-11-19 14:03:19,884 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 83 transitions, 334 flow [2024-11-19 14:03:19,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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) [2024-11-19 14:03:19,884 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:19,884 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:19,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-19 14:03:20,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:20,085 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-19 14:03:20,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:20,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1526359006, now seen corresponding path program 1 times [2024-11-19 14:03:20,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:20,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389370340] [2024-11-19 14:03:20,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:20,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:20,139 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:03:20,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:20,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389370340] [2024-11-19 14:03:20,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389370340] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:20,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685056389] [2024-11-19 14:03:20,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:20,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:20,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:20,141 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) [2024-11-19 14:03:20,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 14:03:20,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:20,206 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 14:03:20,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:20,271 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-19 14:03:20,271 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:03:20,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685056389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:20,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:03:20,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2024-11-19 14:03:20,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425353871] [2024-11-19 14:03:20,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:20,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:03:20,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:20,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:03:20,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-19 14:03:20,298 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 81 [2024-11-19 14:03:20,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 83 transitions, 334 flow. Second operand has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 6 states have internal predecessors, (208), 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) [2024-11-19 14:03:20,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:20,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 81 [2024-11-19 14:03:20,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:20,784 INFO L124 PetriNetUnfolderBase]: 2426/5175 cut-off events. [2024-11-19 14:03:20,785 INFO L125 PetriNetUnfolderBase]: For 4277/4323 co-relation queries the response was YES. [2024-11-19 14:03:20,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12643 conditions, 5175 events. 2426/5175 cut-off events. For 4277/4323 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 38021 event pairs, 1200 based on Foata normal form. 124/5099 useless extension candidates. Maximal degree in co-relation 12576. Up to 2351 conditions per place. [2024-11-19 14:03:20,804 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 144 selfloop transitions, 11 changer transitions 0/177 dead transitions. [2024-11-19 14:03:20,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 177 transitions, 1064 flow [2024-11-19 14:03:20,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 14:03:20,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 14:03:20,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 335 transitions. [2024-11-19 14:03:20,806 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5908289241622575 [2024-11-19 14:03:20,806 INFO L175 Difference]: Start difference. First operand has 104 places, 83 transitions, 334 flow. Second operand 7 states and 335 transitions. [2024-11-19 14:03:20,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 177 transitions, 1064 flow [2024-11-19 14:03:20,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 177 transitions, 1032 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:03:20,816 INFO L231 Difference]: Finished difference. Result has 109 places, 85 transitions, 366 flow [2024-11-19 14:03:20,816 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=366, PETRI_PLACES=109, PETRI_TRANSITIONS=85} [2024-11-19 14:03:20,817 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 35 predicate places. [2024-11-19 14:03:20,817 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 85 transitions, 366 flow [2024-11-19 14:03:20,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 6 states have internal predecessors, (208), 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) [2024-11-19 14:03:20,817 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:20,817 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:20,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-19 14:03:21,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-19 14:03:21,021 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-19 14:03:21,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:21,021 INFO L85 PathProgramCache]: Analyzing trace with hash -2043290889, now seen corresponding path program 1 times [2024-11-19 14:03:21,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:21,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678304758] [2024-11-19 14:03:21,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:21,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:21,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:21,097 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:03:21,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:21,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678304758] [2024-11-19 14:03:21,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678304758] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:21,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538643791] [2024-11-19 14:03:21,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:21,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:21,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:21,099 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) [2024-11-19 14:03:21,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 14:03:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:21,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:03:21,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:21,214 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-19 14:03:21,214 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:03:21,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538643791] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:21,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:03:21,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2024-11-19 14:03:21,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400485706] [2024-11-19 14:03:21,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:21,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:03:21,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:21,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:03:21,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:03:21,231 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 81 [2024-11-19 14:03:21,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 85 transitions, 366 flow. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2024-11-19 14:03:21,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:21,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 81 [2024-11-19 14:03:21,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:21,564 INFO L124 PetriNetUnfolderBase]: 2184/4860 cut-off events. [2024-11-19 14:03:21,565 INFO L125 PetriNetUnfolderBase]: For 5058/5126 co-relation queries the response was YES. [2024-11-19 14:03:21,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12386 conditions, 4860 events. 2184/4860 cut-off events. For 5058/5126 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 36488 event pairs, 1288 based on Foata normal form. 111/4711 useless extension candidates. Maximal degree in co-relation 12317. Up to 2466 conditions per place. [2024-11-19 14:03:21,579 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 82 selfloop transitions, 4 changer transitions 0/108 dead transitions. [2024-11-19 14:03:21,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 108 transitions, 662 flow [2024-11-19 14:03:21,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:03:21,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:03:21,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 191 transitions. [2024-11-19 14:03:21,580 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5895061728395061 [2024-11-19 14:03:21,580 INFO L175 Difference]: Start difference. First operand has 109 places, 85 transitions, 366 flow. Second operand 4 states and 191 transitions. [2024-11-19 14:03:21,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 108 transitions, 662 flow [2024-11-19 14:03:21,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 108 transitions, 644 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:03:21,592 INFO L231 Difference]: Finished difference. Result has 108 places, 84 transitions, 359 flow [2024-11-19 14:03:21,592 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=359, PETRI_PLACES=108, PETRI_TRANSITIONS=84} [2024-11-19 14:03:21,592 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 34 predicate places. [2024-11-19 14:03:21,593 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 84 transitions, 359 flow [2024-11-19 14:03:21,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2024-11-19 14:03:21,593 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:21,593 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:21,606 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-19 14:03:21,793 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,SelfDestructingSolverStorable21 [2024-11-19 14:03:21,793 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-19 14:03:21,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:21,794 INFO L85 PathProgramCache]: Analyzing trace with hash 874829003, now seen corresponding path program 1 times [2024-11-19 14:03:21,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:21,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646425222] [2024-11-19 14:03:21,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:21,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:21,846 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:03:21,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:21,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646425222] [2024-11-19 14:03:21,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646425222] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:21,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521831925] [2024-11-19 14:03:21,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:21,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:21,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:21,849 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) [2024-11-19 14:03:21,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 14:03:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:21,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 14:03:21,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:21,940 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-19 14:03:21,940 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:03:21,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521831925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:21,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:03:21,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-19 14:03:21,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796149571] [2024-11-19 14:03:21,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:21,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:03:21,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:21,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:03:21,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:03:21,959 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 81 [2024-11-19 14:03:21,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 84 transitions, 359 flow. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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) [2024-11-19 14:03:21,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:21,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 81 [2024-11-19 14:03:21,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:22,284 INFO L124 PetriNetUnfolderBase]: 2265/4925 cut-off events. [2024-11-19 14:03:22,285 INFO L125 PetriNetUnfolderBase]: For 5077/5117 co-relation queries the response was YES. [2024-11-19 14:03:22,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12469 conditions, 4925 events. 2265/4925 cut-off events. For 5077/5117 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 36304 event pairs, 1469 based on Foata normal form. 90/4801 useless extension candidates. Maximal degree in co-relation 12400. Up to 2849 conditions per place. [2024-11-19 14:03:22,304 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 124 selfloop transitions, 6 changer transitions 0/152 dead transitions. [2024-11-19 14:03:22,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 152 transitions, 922 flow [2024-11-19 14:03:22,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:03:22,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:03:22,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 257 transitions. [2024-11-19 14:03:22,305 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6345679012345679 [2024-11-19 14:03:22,305 INFO L175 Difference]: Start difference. First operand has 108 places, 84 transitions, 359 flow. Second operand 5 states and 257 transitions. [2024-11-19 14:03:22,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 152 transitions, 922 flow [2024-11-19 14:03:22,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 152 transitions, 893 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 14:03:22,319 INFO L231 Difference]: Finished difference. Result has 107 places, 83 transitions, 354 flow [2024-11-19 14:03:22,319 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=354, PETRI_PLACES=107, PETRI_TRANSITIONS=83} [2024-11-19 14:03:22,319 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 33 predicate places. [2024-11-19 14:03:22,320 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 83 transitions, 354 flow [2024-11-19 14:03:22,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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) [2024-11-19 14:03:22,320 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:22,320 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:22,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-19 14:03:22,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:22,520 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-19 14:03:22,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:22,521 INFO L85 PathProgramCache]: Analyzing trace with hash 874827978, now seen corresponding path program 1 times [2024-11-19 14:03:22,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:22,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858113985] [2024-11-19 14:03:22,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:22,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:22,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:22,578 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:03:22,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:22,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858113985] [2024-11-19 14:03:22,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858113985] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:22,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150092957] [2024-11-19 14:03:22,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:22,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:22,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:22,580 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) [2024-11-19 14:03:22,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 14:03:22,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:22,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 14:03:22,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:22,676 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-19 14:03:22,677 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:03:22,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150092957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:22,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:03:22,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-19 14:03:22,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674319671] [2024-11-19 14:03:22,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:22,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:03:22,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:22,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:03:22,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:03:22,696 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 81 [2024-11-19 14:03:22,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 83 transitions, 354 flow. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2024-11-19 14:03:22,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:22,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 81 [2024-11-19 14:03:22,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:23,030 INFO L124 PetriNetUnfolderBase]: 2495/5119 cut-off events. [2024-11-19 14:03:23,030 INFO L125 PetriNetUnfolderBase]: For 4584/4621 co-relation queries the response was YES. [2024-11-19 14:03:23,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13317 conditions, 5119 events. 2495/5119 cut-off events. For 4584/4621 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 36188 event pairs, 1612 based on Foata normal form. 87/4998 useless extension candidates. Maximal degree in co-relation 13249. Up to 3103 conditions per place. [2024-11-19 14:03:23,048 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 99 selfloop transitions, 6 changer transitions 6/130 dead transitions. [2024-11-19 14:03:23,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 130 transitions, 776 flow [2024-11-19 14:03:23,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:03:23,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:03:23,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 214 transitions. [2024-11-19 14:03:23,049 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6604938271604939 [2024-11-19 14:03:23,049 INFO L175 Difference]: Start difference. First operand has 107 places, 83 transitions, 354 flow. Second operand 4 states and 214 transitions. [2024-11-19 14:03:23,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 130 transitions, 776 flow [2024-11-19 14:03:23,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 130 transitions, 754 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-19 14:03:23,062 INFO L231 Difference]: Finished difference. Result has 105 places, 83 transitions, 351 flow [2024-11-19 14:03:23,062 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=351, PETRI_PLACES=105, PETRI_TRANSITIONS=83} [2024-11-19 14:03:23,063 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 31 predicate places. [2024-11-19 14:03:23,063 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 83 transitions, 351 flow [2024-11-19 14:03:23,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2024-11-19 14:03:23,063 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:23,063 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:23,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-19 14:03:23,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:23,264 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-19 14:03:23,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:23,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1082491724, now seen corresponding path program 1 times [2024-11-19 14:03:23,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:23,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952782027] [2024-11-19 14:03:23,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:23,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:23,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:23,334 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:03:23,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:23,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952782027] [2024-11-19 14:03:23,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952782027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:23,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539857159] [2024-11-19 14:03:23,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:23,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:23,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:23,336 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:03:23,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-19 14:03:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:23,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 14:03:23,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:23,462 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-19 14:03:23,463 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:03:23,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539857159] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:23,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:03:23,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2024-11-19 14:03:23,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051138011] [2024-11-19 14:03:23,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:23,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:03:23,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:23,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:03:23,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-19 14:03:23,484 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 81 [2024-11-19 14:03:23,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 83 transitions, 351 flow. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 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) [2024-11-19 14:03:23,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:23,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 81 [2024-11-19 14:03:23,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:23,856 INFO L124 PetriNetUnfolderBase]: 2295/4858 cut-off events. [2024-11-19 14:03:23,856 INFO L125 PetriNetUnfolderBase]: For 4733/4785 co-relation queries the response was YES. [2024-11-19 14:03:23,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12503 conditions, 4858 events. 2295/4858 cut-off events. For 4733/4785 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 34922 event pairs, 1668 based on Foata normal form. 146/4848 useless extension candidates. Maximal degree in co-relation 12436. Up to 3141 conditions per place. [2024-11-19 14:03:23,874 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 130 selfloop transitions, 6 changer transitions 0/155 dead transitions. [2024-11-19 14:03:23,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 155 transitions, 991 flow [2024-11-19 14:03:23,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 14:03:23,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 14:03:23,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 285 transitions. [2024-11-19 14:03:23,875 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5864197530864198 [2024-11-19 14:03:23,875 INFO L175 Difference]: Start difference. First operand has 105 places, 83 transitions, 351 flow. Second operand 6 states and 285 transitions. [2024-11-19 14:03:23,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 155 transitions, 991 flow [2024-11-19 14:03:23,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 155 transitions, 941 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-19 14:03:23,886 INFO L231 Difference]: Finished difference. Result has 107 places, 82 transitions, 344 flow [2024-11-19 14:03:23,886 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=344, PETRI_PLACES=107, PETRI_TRANSITIONS=82} [2024-11-19 14:03:23,887 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 33 predicate places. [2024-11-19 14:03:23,887 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 82 transitions, 344 flow [2024-11-19 14:03:23,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 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) [2024-11-19 14:03:23,887 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:23,887 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:23,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-19 14:03:24,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-19 14:03:24,087 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-19 14:03:24,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:24,088 INFO L85 PathProgramCache]: Analyzing trace with hash 2078365277, now seen corresponding path program 1 times [2024-11-19 14:03:24,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:24,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171840817] [2024-11-19 14:03:24,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:24,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:24,145 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:03:24,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:24,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171840817] [2024-11-19 14:03:24,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171840817] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:24,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151543174] [2024-11-19 14:03:24,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:24,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:24,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:24,148 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:03:24,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-19 14:03:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:24,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 14:03:24,221 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:24,246 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-19 14:03:24,246 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:03:24,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151543174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:24,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:03:24,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-19 14:03:24,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210583910] [2024-11-19 14:03:24,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:24,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:03:24,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:24,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:03:24,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:03:24,264 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-11-19 14:03:24,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 82 transitions, 344 flow. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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) [2024-11-19 14:03:24,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:24,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-11-19 14:03:24,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:24,575 INFO L124 PetriNetUnfolderBase]: 2225/4729 cut-off events. [2024-11-19 14:03:24,575 INFO L125 PetriNetUnfolderBase]: For 4146/4165 co-relation queries the response was YES. [2024-11-19 14:03:24,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12148 conditions, 4729 events. 2225/4729 cut-off events. For 4146/4165 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 33943 event pairs, 1762 based on Foata normal form. 67/4635 useless extension candidates. Maximal degree in co-relation 12080. Up to 3367 conditions per place. [2024-11-19 14:03:24,593 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 86 selfloop transitions, 3 changer transitions 18/127 dead transitions. [2024-11-19 14:03:24,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 127 transitions, 762 flow [2024-11-19 14:03:24,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:03:24,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:03:24,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 215 transitions. [2024-11-19 14:03:24,594 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6635802469135802 [2024-11-19 14:03:24,594 INFO L175 Difference]: Start difference. First operand has 107 places, 82 transitions, 344 flow. Second operand 4 states and 215 transitions. [2024-11-19 14:03:24,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 127 transitions, 762 flow [2024-11-19 14:03:24,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 127 transitions, 734 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-19 14:03:24,606 INFO L231 Difference]: Finished difference. Result has 104 places, 75 transitions, 304 flow [2024-11-19 14:03:24,606 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=304, PETRI_PLACES=104, PETRI_TRANSITIONS=75} [2024-11-19 14:03:24,606 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 30 predicate places. [2024-11-19 14:03:24,606 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 75 transitions, 304 flow [2024-11-19 14:03:24,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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) [2024-11-19 14:03:24,607 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:24,607 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:24,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-19 14:03:24,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-19 14:03:24,807 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-19 14:03:24,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:24,807 INFO L85 PathProgramCache]: Analyzing trace with hash -802494054, now seen corresponding path program 1 times [2024-11-19 14:03:24,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:24,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517044343] [2024-11-19 14:03:24,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:24,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:24,867 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:03:24,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:24,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517044343] [2024-11-19 14:03:24,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517044343] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:24,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063693418] [2024-11-19 14:03:24,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:24,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:24,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:24,869 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:03:24,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-19 14:03:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:24,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 14:03:24,934 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:24,990 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-19 14:03:24,990 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:03:24,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063693418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:24,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:03:24,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2024-11-19 14:03:24,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347792604] [2024-11-19 14:03:24,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:24,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:03:24,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:24,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:03:24,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-19 14:03:25,025 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 81 [2024-11-19 14:03:25,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 75 transitions, 304 flow. Second operand has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 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) [2024-11-19 14:03:25,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:25,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 81 [2024-11-19 14:03:25,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:25,325 INFO L124 PetriNetUnfolderBase]: 1861/3997 cut-off events. [2024-11-19 14:03:25,325 INFO L125 PetriNetUnfolderBase]: For 3538/3560 co-relation queries the response was YES. [2024-11-19 14:03:25,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9974 conditions, 3997 events. 1861/3997 cut-off events. For 3538/3560 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 27837 event pairs, 756 based on Foata normal form. 106/4010 useless extension candidates. Maximal degree in co-relation 9908. Up to 1468 conditions per place. [2024-11-19 14:03:25,338 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 146 selfloop transitions, 8 changer transitions 0/172 dead transitions. [2024-11-19 14:03:25,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 172 transitions, 1078 flow [2024-11-19 14:03:25,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 14:03:25,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 14:03:25,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 327 transitions. [2024-11-19 14:03:25,339 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5767195767195767 [2024-11-19 14:03:25,340 INFO L175 Difference]: Start difference. First operand has 104 places, 75 transitions, 304 flow. Second operand 7 states and 327 transitions. [2024-11-19 14:03:25,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 172 transitions, 1078 flow [2024-11-19 14:03:25,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 172 transitions, 1018 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-19 14:03:25,348 INFO L231 Difference]: Finished difference. Result has 100 places, 76 transitions, 310 flow [2024-11-19 14:03:25,348 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=310, PETRI_PLACES=100, PETRI_TRANSITIONS=76} [2024-11-19 14:03:25,348 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 26 predicate places. [2024-11-19 14:03:25,348 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 76 transitions, 310 flow [2024-11-19 14:03:25,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 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) [2024-11-19 14:03:25,348 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:25,348 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:25,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-19 14:03:25,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-19 14:03:25,549 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-19 14:03:25,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:25,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1839806066, now seen corresponding path program 1 times [2024-11-19 14:03:25,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:25,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987317978] [2024-11-19 14:03:25,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:25,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:25,597 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:03:25,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:25,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987317978] [2024-11-19 14:03:25,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987317978] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:25,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864786445] [2024-11-19 14:03:25,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:25,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:25,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:25,599 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:03:25,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-19 14:03:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:25,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 14:03:25,669 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:25,692 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-19 14:03:25,692 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:03:25,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864786445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:25,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:03:25,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-19 14:03:25,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895973174] [2024-11-19 14:03:25,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:25,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:03:25,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:25,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:03:25,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:03:25,707 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 81 [2024-11-19 14:03:25,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 76 transitions, 310 flow. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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) [2024-11-19 14:03:25,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:25,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 81 [2024-11-19 14:03:25,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:25,944 INFO L124 PetriNetUnfolderBase]: 1697/3786 cut-off events. [2024-11-19 14:03:25,944 INFO L125 PetriNetUnfolderBase]: For 3243/3261 co-relation queries the response was YES. [2024-11-19 14:03:25,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9432 conditions, 3786 events. 1697/3786 cut-off events. For 3243/3261 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 26870 event pairs, 1060 based on Foata normal form. 59/3706 useless extension candidates. Maximal degree in co-relation 9366. Up to 2009 conditions per place. [2024-11-19 14:03:25,957 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 123 selfloop transitions, 5 changer transitions 0/147 dead transitions. [2024-11-19 14:03:25,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 147 transitions, 877 flow [2024-11-19 14:03:25,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:03:25,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:03:25,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 250 transitions. [2024-11-19 14:03:25,958 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6172839506172839 [2024-11-19 14:03:25,958 INFO L175 Difference]: Start difference. First operand has 100 places, 76 transitions, 310 flow. Second operand 5 states and 250 transitions. [2024-11-19 14:03:25,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 147 transitions, 877 flow [2024-11-19 14:03:25,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 147 transitions, 864 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-19 14:03:25,969 INFO L231 Difference]: Finished difference. Result has 98 places, 75 transitions, 300 flow [2024-11-19 14:03:25,969 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=300, PETRI_PLACES=98, PETRI_TRANSITIONS=75} [2024-11-19 14:03:25,969 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 24 predicate places. [2024-11-19 14:03:25,969 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 75 transitions, 300 flow [2024-11-19 14:03:25,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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) [2024-11-19 14:03:25,969 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:25,970 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:25,982 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-19 14:03:26,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:26,170 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-19 14:03:26,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:26,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1839805041, now seen corresponding path program 1 times [2024-11-19 14:03:26,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:26,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507436670] [2024-11-19 14:03:26,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:26,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:26,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:26,220 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:03:26,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:26,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507436670] [2024-11-19 14:03:26,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507436670] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:26,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143370527] [2024-11-19 14:03:26,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:26,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:26,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:26,222 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:03:26,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-19 14:03:26,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:26,299 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 14:03:26,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:26,323 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-19 14:03:26,323 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:03:26,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143370527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:26,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:03:26,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-19 14:03:26,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136631571] [2024-11-19 14:03:26,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:26,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:03:26,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:26,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:03:26,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:03:26,333 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 81 [2024-11-19 14:03:26,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 75 transitions, 300 flow. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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) [2024-11-19 14:03:26,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:26,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 81 [2024-11-19 14:03:26,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:26,578 INFO L124 PetriNetUnfolderBase]: 1943/3981 cut-off events. [2024-11-19 14:03:26,578 INFO L125 PetriNetUnfolderBase]: For 3144/3166 co-relation queries the response was YES. [2024-11-19 14:03:26,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10262 conditions, 3981 events. 1943/3981 cut-off events. For 3144/3166 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 26646 event pairs, 1212 based on Foata normal form. 55/3942 useless extension candidates. Maximal degree in co-relation 10197. Up to 2279 conditions per place. [2024-11-19 14:03:26,591 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 78 selfloop transitions, 1 changer transitions 29/124 dead transitions. [2024-11-19 14:03:26,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 124 transitions, 734 flow [2024-11-19 14:03:26,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:03:26,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:03:26,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 209 transitions. [2024-11-19 14:03:26,592 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6450617283950617 [2024-11-19 14:03:26,592 INFO L175 Difference]: Start difference. First operand has 98 places, 75 transitions, 300 flow. Second operand 4 states and 209 transitions. [2024-11-19 14:03:26,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 124 transitions, 734 flow [2024-11-19 14:03:26,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 124 transitions, 722 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 14:03:26,604 INFO L231 Difference]: Finished difference. Result has 96 places, 71 transitions, 274 flow [2024-11-19 14:03:26,604 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=274, PETRI_PLACES=96, PETRI_TRANSITIONS=71} [2024-11-19 14:03:26,604 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 22 predicate places. [2024-11-19 14:03:26,604 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 71 transitions, 274 flow [2024-11-19 14:03:26,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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) [2024-11-19 14:03:26,605 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:26,605 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:26,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-19 14:03:26,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-19 14:03:26,805 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-19 14:03:26,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:26,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1927883189, now seen corresponding path program 1 times [2024-11-19 14:03:26,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:26,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579590764] [2024-11-19 14:03:26,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:26,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:26,852 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:03:26,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:26,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579590764] [2024-11-19 14:03:26,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579590764] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:26,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351156379] [2024-11-19 14:03:26,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:26,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:26,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:26,854 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:03:26,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-19 14:03:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:26,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 14:03:26,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:26,940 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-19 14:03:26,941 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:03:26,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351156379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:26,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:03:26,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-19 14:03:26,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638589862] [2024-11-19 14:03:26,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:26,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:03:26,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:26,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:03:26,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:03:26,958 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-11-19 14:03:26,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 71 transitions, 274 flow. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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) [2024-11-19 14:03:26,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:26,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-11-19 14:03:26,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:27,147 INFO L124 PetriNetUnfolderBase]: 1287/2779 cut-off events. [2024-11-19 14:03:27,147 INFO L125 PetriNetUnfolderBase]: For 1712/1716 co-relation queries the response was YES. [2024-11-19 14:03:27,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6820 conditions, 2779 events. 1287/2779 cut-off events. For 1712/1716 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 18047 event pairs, 984 based on Foata normal form. 53/2693 useless extension candidates. Maximal degree in co-relation 6803. Up to 1874 conditions per place. [2024-11-19 14:03:27,152 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 0 selfloop transitions, 0 changer transitions 118/118 dead transitions. [2024-11-19 14:03:27,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 118 transitions, 684 flow [2024-11-19 14:03:27,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:03:27,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:03:27,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 207 transitions. [2024-11-19 14:03:27,153 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-11-19 14:03:27,153 INFO L175 Difference]: Start difference. First operand has 96 places, 71 transitions, 274 flow. Second operand 4 states and 207 transitions. [2024-11-19 14:03:27,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 118 transitions, 684 flow [2024-11-19 14:03:27,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 118 transitions, 676 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-19 14:03:27,158 INFO L231 Difference]: Finished difference. Result has 91 places, 0 transitions, 0 flow [2024-11-19 14:03:27,158 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=91, PETRI_TRANSITIONS=0} [2024-11-19 14:03:27,158 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 17 predicate places. [2024-11-19 14:03:27,158 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 0 transitions, 0 flow [2024-11-19 14:03:27,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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) [2024-11-19 14:03:27,160 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 38 remaining) [2024-11-19 14:03:27,161 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 38 remaining) [2024-11-19 14:03:27,161 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 38 remaining) [2024-11-19 14:03:27,161 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 38 remaining) [2024-11-19 14:03:27,161 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 38 remaining) [2024-11-19 14:03:27,161 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 38 remaining) [2024-11-19 14:03:27,161 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 38 remaining) [2024-11-19 14:03:27,161 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 38 remaining) [2024-11-19 14:03:27,161 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 38 remaining) [2024-11-19 14:03:27,161 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 38 remaining) [2024-11-19 14:03:27,162 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 38 remaining) [2024-11-19 14:03:27,162 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 38 remaining) [2024-11-19 14:03:27,162 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 38 remaining) [2024-11-19 14:03:27,162 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 38 remaining) [2024-11-19 14:03:27,162 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 38 remaining) [2024-11-19 14:03:27,162 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 38 remaining) [2024-11-19 14:03:27,162 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 38 remaining) [2024-11-19 14:03:27,162 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 38 remaining) [2024-11-19 14:03:27,162 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 38 remaining) [2024-11-19 14:03:27,162 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 38 remaining) [2024-11-19 14:03:27,162 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 38 remaining) [2024-11-19 14:03:27,163 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 38 remaining) [2024-11-19 14:03:27,163 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 38 remaining) [2024-11-19 14:03:27,163 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 38 remaining) [2024-11-19 14:03:27,163 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 38 remaining) [2024-11-19 14:03:27,163 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 38 remaining) [2024-11-19 14:03:27,163 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 38 remaining) [2024-11-19 14:03:27,163 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 38 remaining) [2024-11-19 14:03:27,163 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 38 remaining) [2024-11-19 14:03:27,163 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 38 remaining) [2024-11-19 14:03:27,163 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 38 remaining) [2024-11-19 14:03:27,163 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 38 remaining) [2024-11-19 14:03:27,163 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 38 remaining) [2024-11-19 14:03:27,163 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 38 remaining) [2024-11-19 14:03:27,163 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 38 remaining) [2024-11-19 14:03:27,164 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 38 remaining) [2024-11-19 14:03:27,164 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 38 remaining) [2024-11-19 14:03:27,164 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 38 remaining) [2024-11-19 14:03:27,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-19 14:03:27,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:27,364 INFO L407 BasicCegarLoop]: Path program 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] [2024-11-19 14:03:27,369 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-19 14:03:27,369 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-19 14:03:27,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 02:03:27 BasicIcfg [2024-11-19 14:03:27,376 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-19 14:03:27,377 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 14:03:27,377 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 14:03:27,377 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 14:03:27,377 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:03:08" (3/4) ... [2024-11-19 14:03:27,378 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-19 14:03:27,380 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-19 14:03:27,380 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-19 14:03:27,384 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 117 nodes and edges [2024-11-19 14:03:27,384 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2024-11-19 14:03:27,384 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-19 14:03:27,384 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-19 14:03:27,455 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-19 14:03:27,456 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-19 14:03:27,456 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 14:03:27,456 INFO L158 Benchmark]: Toolchain (without parser) took 20098.13ms. Allocated memory was 163.6MB in the beginning and 847.2MB in the end (delta: 683.7MB). Free memory was 125.1MB in the beginning and 653.3MB in the end (delta: -528.2MB). Peak memory consumption was 156.4MB. Max. memory is 16.1GB. [2024-11-19 14:03:27,456 INFO L158 Benchmark]: CDTParser took 0.67ms. Allocated memory is still 109.1MB. Free memory is still 79.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 14:03:27,456 INFO L158 Benchmark]: CACSL2BoogieTranslator took 247.84ms. Allocated memory is still 163.6MB. Free memory was 125.1MB in the beginning and 111.5MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-19 14:03:27,456 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.12ms. Allocated memory is still 163.6MB. Free memory was 111.5MB in the beginning and 108.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 14:03:27,457 INFO L158 Benchmark]: Boogie Preprocessor took 34.49ms. Allocated memory is still 163.6MB. Free memory was 108.3MB in the beginning and 105.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-19 14:03:27,457 INFO L158 Benchmark]: RCFGBuilder took 689.44ms. Allocated memory is still 163.6MB. Free memory was 105.2MB in the beginning and 67.7MB in the end (delta: 37.5MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-11-19 14:03:27,457 INFO L158 Benchmark]: TraceAbstraction took 19005.57ms. Allocated memory was 163.6MB in the beginning and 847.2MB in the end (delta: 683.7MB). Free memory was 66.6MB in the beginning and 659.1MB in the end (delta: -592.6MB). Peak memory consumption was 490.5MB. Max. memory is 16.1GB. [2024-11-19 14:03:27,457 INFO L158 Benchmark]: Witness Printer took 78.95ms. Allocated memory is still 847.2MB. Free memory was 659.1MB in the beginning and 653.3MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-19 14:03:27,458 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67ms. Allocated memory is still 109.1MB. Free memory is still 79.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 247.84ms. Allocated memory is still 163.6MB. Free memory was 125.1MB in the beginning and 111.5MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.12ms. Allocated memory is still 163.6MB. Free memory was 111.5MB in the beginning and 108.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.49ms. Allocated memory is still 163.6MB. Free memory was 108.3MB in the beginning and 105.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 689.44ms. Allocated memory is still 163.6MB. Free memory was 105.2MB in the beginning and 67.7MB in the end (delta: 37.5MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * TraceAbstraction took 19005.57ms. Allocated memory was 163.6MB in the beginning and 847.2MB in the end (delta: 683.7MB). Free memory was 66.6MB in the beginning and 659.1MB in the end (delta: -592.6MB). Peak memory consumption was 490.5MB. Max. memory is 16.1GB. * Witness Printer took 78.95ms. Allocated memory is still 847.2MB. Free memory was 659.1MB in the beginning and 653.3MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 123]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 123]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 127 locations, 38 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 18.9s, OverallIterations: 30, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 10.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1896 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1642 mSDsluCounter, 141 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 78 mSDsCounter, 81 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5209 IncrementalHoareTripleChecker+Invalid, 5290 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 81 mSolverCounterUnsat, 63 mSDtfsCounter, 5209 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 707 GetRequests, 518 SyntacticMatches, 1 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=366occurred in iteration=21, InterpolantAutomatonStates: 144, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 1139 NumberOfCodeBlocks, 1115 NumberOfCodeBlocksAsserted, 53 NumberOfCheckSat, 1122 ConstructedInterpolants, 0 QuantifiedInterpolants, 2576 SizeOfPredicates, 35 NumberOfNonLiveVariables, 3465 ConjunctsInSsa, 89 ConjunctsInUnsatCore, 54 InterpolantComputations, 27 PerfectInterpolantSequences, 592/666 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 20 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-19 14:03:27,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE