./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum.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 37988a2d341c7c9f3fcf434d412d9132bef9023d4105c08959698de2759206e2 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-15 00:03:24,523 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 00:03:24,595 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-15 00:03:24,600 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 00:03:24,601 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 00:03:24,637 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 00:03:24,637 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 00:03:24,638 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 00:03:24,638 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 00:03:24,638 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 00:03:24,639 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 00:03:24,639 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 00:03:24,641 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 00:03:24,643 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 00:03:24,643 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 00:03:24,644 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 00:03:24,644 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 00:03:24,644 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 00:03:24,645 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 00:03:24,645 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 00:03:24,645 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 00:03:24,646 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 00:03:24,646 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 00:03:24,646 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 00:03:24,647 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 00:03:24,647 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-15 00:03:24,647 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-15 00:03:24,648 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 00:03:24,648 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 00:03:24,648 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 00:03:24,648 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 00:03:24,649 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 00:03:24,649 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 00:03:24,649 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 00:03:24,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:03:24,650 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 00:03:24,650 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 00:03:24,651 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 00:03:24,651 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 00:03:24,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 00:03:24,651 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 00:03:24,652 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 00:03:24,652 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 00:03:24,652 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 00:03:24,653 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37988a2d341c7c9f3fcf434d412d9132bef9023d4105c08959698de2759206e2 [2024-10-15 00:03:24,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 00:03:24,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 00:03:24,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 00:03:24,902 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 00:03:24,903 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 00:03:24,904 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c [2024-10-15 00:03:26,461 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 00:03:26,667 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 00:03:26,668 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c [2024-10-15 00:03:26,676 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5c6cd2db/04b5cabaed674175a974ec91f75b6cb6/FLAG238bc53c6 [2024-10-15 00:03:27,036 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5c6cd2db/04b5cabaed674175a974ec91f75b6cb6 [2024-10-15 00:03:27,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 00:03:27,039 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 00:03:27,040 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 00:03:27,040 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 00:03:27,045 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 00:03:27,046 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:03:27" (1/1) ... [2024-10-15 00:03:27,047 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4afece51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:27, skipping insertion in model container [2024-10-15 00:03:27,047 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:03:27" (1/1) ... [2024-10-15 00:03:27,069 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 00:03:27,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:03:27,317 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 00:03:27,342 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:03:27,360 INFO L204 MainTranslator]: Completed translation [2024-10-15 00:03:27,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:27 WrapperNode [2024-10-15 00:03:27,361 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 00:03:27,362 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 00:03:27,363 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 00:03:27,363 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 00:03:27,369 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:27" (1/1) ... [2024-10-15 00:03:27,377 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:27" (1/1) ... [2024-10-15 00:03:27,409 INFO L138 Inliner]: procedures = 24, calls = 44, calls flagged for inlining = 17, calls inlined = 29, statements flattened = 372 [2024-10-15 00:03:27,410 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 00:03:27,410 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 00:03:27,410 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 00:03:27,410 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 00:03:27,423 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:27" (1/1) ... [2024-10-15 00:03:27,423 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:27" (1/1) ... [2024-10-15 00:03:27,431 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:27" (1/1) ... [2024-10-15 00:03:27,459 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-15 00:03:27,460 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:27" (1/1) ... [2024-10-15 00:03:27,460 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:27" (1/1) ... [2024-10-15 00:03:27,473 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:27" (1/1) ... [2024-10-15 00:03:27,478 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:27" (1/1) ... [2024-10-15 00:03:27,482 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:27" (1/1) ... [2024-10-15 00:03:27,484 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:27" (1/1) ... [2024-10-15 00:03:27,487 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 00:03:27,488 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 00:03:27,488 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 00:03:27,489 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 00:03:27,489 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:27" (1/1) ... [2024-10-15 00:03:27,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:03:27,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:27,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-15 00:03:27,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-15 00:03:27,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 00:03:27,577 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-15 00:03:27,577 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-15 00:03:27,578 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-15 00:03:27,578 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-15 00:03:27,578 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-15 00:03:27,578 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-15 00:03:27,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 00:03:27,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-15 00:03:27,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-15 00:03:27,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-15 00:03:27,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-15 00:03:27,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-15 00:03:27,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-15 00:03:27,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 00:03:27,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 00:03:27,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-15 00:03:27,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-15 00:03:27,585 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-15 00:03:27,703 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 00:03:27,705 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 00:03:28,319 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-15 00:03:28,319 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 00:03:29,211 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 00:03:29,215 INFO L314 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-15 00:03:29,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:03:29 BoogieIcfgContainer [2024-10-15 00:03:29,216 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 00:03:29,220 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 00:03:29,221 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 00:03:29,224 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 00:03:29,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:03:27" (1/3) ... [2024-10-15 00:03:29,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c721cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:03:29, skipping insertion in model container [2024-10-15 00:03:29,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:27" (2/3) ... [2024-10-15 00:03:29,227 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c721cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:03:29, skipping insertion in model container [2024-10-15 00:03:29,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:03:29" (3/3) ... [2024-10-15 00:03:29,229 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum.wvr.c [2024-10-15 00:03:29,248 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 00:03:29,248 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2024-10-15 00:03:29,249 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-15 00:03:29,491 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-15 00:03:29,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 92 transitions, 205 flow [2024-10-15 00:03:29,591 INFO L124 PetriNetUnfolderBase]: 5/89 cut-off events. [2024-10-15 00:03:29,591 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-15 00:03:29,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 89 events. 5/89 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 374 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2024-10-15 00:03:29,596 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 92 transitions, 205 flow [2024-10-15 00:03:29,599 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 87 transitions, 189 flow [2024-10-15 00:03:29,611 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 00:03:29,621 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;@48fb8bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 00:03:29,621 INFO L334 AbstractCegarLoop]: Starting to check reachability of 91 error locations. [2024-10-15 00:03:29,624 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-15 00:03:29,625 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-15 00:03:29,625 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-15 00:03:29,625 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:29,626 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-15 00:03:29,626 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-15 00:03:29,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:29,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1357085, now seen corresponding path program 1 times [2024-10-15 00:03:29,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:29,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852026576] [2024-10-15 00:03:29,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:29,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:29,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:29,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:29,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:29,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852026576] [2024-10-15 00:03:29,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852026576] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:29,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:03:29,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:03:29,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563422896] [2024-10-15 00:03:29,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:29,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:03:29,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:29,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:03:29,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:03:29,954 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 92 [2024-10-15 00:03:29,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 87 transitions, 189 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:29,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:29,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 92 [2024-10-15 00:03:29,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:32,487 INFO L124 PetriNetUnfolderBase]: 7417/11809 cut-off events. [2024-10-15 00:03:32,487 INFO L125 PetriNetUnfolderBase]: For 463/463 co-relation queries the response was YES. [2024-10-15 00:03:32,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22694 conditions, 11809 events. 7417/11809 cut-off events. For 463/463 co-relation queries the response was YES. Maximal size of possible extension queue 1296. Compared 90351 event pairs, 6620 based on Foata normal form. 2/6714 useless extension candidates. Maximal degree in co-relation 21763. Up to 10475 conditions per place. [2024-10-15 00:03:32,602 INFO L140 encePairwiseOnDemand]: 66/92 looper letters, 44 selfloop transitions, 6 changer transitions 0/67 dead transitions. [2024-10-15 00:03:32,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 67 transitions, 249 flow [2024-10-15 00:03:32,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:03:32,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:03:32,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 150 transitions. [2024-10-15 00:03:32,616 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4076086956521739 [2024-10-15 00:03:32,617 INFO L175 Difference]: Start difference. First operand has 92 places, 87 transitions, 189 flow. Second operand 4 states and 150 transitions. [2024-10-15 00:03:32,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 67 transitions, 249 flow [2024-10-15 00:03:32,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 67 transitions, 240 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-15 00:03:32,626 INFO L231 Difference]: Finished difference. Result has 70 places, 67 transitions, 152 flow [2024-10-15 00:03:32,628 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=70, PETRI_TRANSITIONS=67} [2024-10-15 00:03:32,631 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, -22 predicate places. [2024-10-15 00:03:32,631 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 67 transitions, 152 flow [2024-10-15 00:03:32,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:32,632 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:32,632 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-15 00:03:32,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 00:03:32,633 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-15 00:03:32,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:32,633 INFO L85 PathProgramCache]: Analyzing trace with hash 42071051, now seen corresponding path program 1 times [2024-10-15 00:03:32,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:32,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413813389] [2024-10-15 00:03:32,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:32,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:32,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:32,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:32,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413813389] [2024-10-15 00:03:32,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413813389] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:32,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:03:32,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:03:32,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118807534] [2024-10-15 00:03:32,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:32,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:03:32,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:32,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:03:32,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:03:32,754 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 92 [2024-10-15 00:03:32,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 67 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:32,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:32,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 92 [2024-10-15 00:03:32,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:34,843 INFO L124 PetriNetUnfolderBase]: 7419/11817 cut-off events. [2024-10-15 00:03:34,844 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2024-10-15 00:03:34,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22573 conditions, 11817 events. 7419/11817 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 1296. Compared 90311 event pairs, 6620 based on Foata normal form. 2/6724 useless extension candidates. Maximal degree in co-relation 22525. Up to 10484 conditions per place. [2024-10-15 00:03:34,933 INFO L140 encePairwiseOnDemand]: 83/92 looper letters, 49 selfloop transitions, 7 changer transitions 0/73 dead transitions. [2024-10-15 00:03:34,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 73 transitions, 286 flow [2024-10-15 00:03:34,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:03:34,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:03:34,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 138 transitions. [2024-10-15 00:03:34,937 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-10-15 00:03:34,937 INFO L175 Difference]: Start difference. First operand has 70 places, 67 transitions, 152 flow. Second operand 4 states and 138 transitions. [2024-10-15 00:03:34,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 73 transitions, 286 flow [2024-10-15 00:03:34,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 73 transitions, 264 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-15 00:03:34,943 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 196 flow [2024-10-15 00:03:34,944 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=196, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2024-10-15 00:03:34,945 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, -19 predicate places. [2024-10-15 00:03:34,945 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 196 flow [2024-10-15 00:03:34,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:34,946 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:34,946 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:34,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-15 00:03:34,946 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-15 00:03:34,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:34,947 INFO L85 PathProgramCache]: Analyzing trace with hash -753520445, now seen corresponding path program 1 times [2024-10-15 00:03:34,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:34,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459829270] [2024-10-15 00:03:34,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:34,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:35,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:35,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:35,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459829270] [2024-10-15 00:03:35,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459829270] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:35,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:03:35,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:03:35,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755478243] [2024-10-15 00:03:35,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:35,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:03:35,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:35,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:03:35,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:03:35,106 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 92 [2024-10-15 00:03:35,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 73 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:35,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:35,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 92 [2024-10-15 00:03:35,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:37,322 INFO L124 PetriNetUnfolderBase]: 7418/11823 cut-off events. [2024-10-15 00:03:37,323 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2024-10-15 00:03:37,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22598 conditions, 11823 events. 7418/11823 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 1296. Compared 90285 event pairs, 6620 based on Foata normal form. 2/6731 useless extension candidates. Maximal degree in co-relation 22537. Up to 10481 conditions per place. [2024-10-15 00:03:37,411 INFO L140 encePairwiseOnDemand]: 86/92 looper letters, 49 selfloop transitions, 8 changer transitions 0/76 dead transitions. [2024-10-15 00:03:37,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 76 transitions, 324 flow [2024-10-15 00:03:37,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 00:03:37,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-15 00:03:37,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 179 transitions. [2024-10-15 00:03:37,413 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38913043478260867 [2024-10-15 00:03:37,413 INFO L175 Difference]: Start difference. First operand has 73 places, 73 transitions, 196 flow. Second operand 5 states and 179 transitions. [2024-10-15 00:03:37,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 76 transitions, 324 flow [2024-10-15 00:03:37,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 76 transitions, 324 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-15 00:03:37,419 INFO L231 Difference]: Finished difference. Result has 79 places, 75 transitions, 233 flow [2024-10-15 00:03:37,419 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=233, PETRI_PLACES=79, PETRI_TRANSITIONS=75} [2024-10-15 00:03:37,420 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, -13 predicate places. [2024-10-15 00:03:37,421 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 75 transitions, 233 flow [2024-10-15 00:03:37,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:37,421 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:37,421 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-15 00:03:37,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-15 00:03:37,422 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-15 00:03:37,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:37,423 INFO L85 PathProgramCache]: Analyzing trace with hash -790393546, now seen corresponding path program 1 times [2024-10-15 00:03:37,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:37,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100913623] [2024-10-15 00:03:37,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:37,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:37,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:37,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:37,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100913623] [2024-10-15 00:03:37,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100913623] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:37,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616253137] [2024-10-15 00:03:37,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:37,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:37,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:37,522 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:03:37,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 00:03:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:37,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:03:37,683 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:37,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:37,727 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:37,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:37,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616253137] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:37,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:37,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-10-15 00:03:37,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561653169] [2024-10-15 00:03:37,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:37,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-15 00:03:37,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:37,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-15 00:03:37,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-15 00:03:37,811 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 92 [2024-10-15 00:03:37,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 75 transitions, 233 flow. Second operand has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 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) [2024-10-15 00:03:37,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:37,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 92 [2024-10-15 00:03:37,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:39,495 INFO L124 PetriNetUnfolderBase]: 7424/11856 cut-off events. [2024-10-15 00:03:39,496 INFO L125 PetriNetUnfolderBase]: For 194/194 co-relation queries the response was YES. [2024-10-15 00:03:39,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22726 conditions, 11856 events. 7424/11856 cut-off events. For 194/194 co-relation queries the response was YES. Maximal size of possible extension queue 1296. Compared 90530 event pairs, 6620 based on Foata normal form. 6/6764 useless extension candidates. Maximal degree in co-relation 22610. Up to 10490 conditions per place. [2024-10-15 00:03:39,571 INFO L140 encePairwiseOnDemand]: 83/92 looper letters, 51 selfloop transitions, 31 changer transitions 0/99 dead transitions. [2024-10-15 00:03:39,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 99 transitions, 547 flow [2024-10-15 00:03:39,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:03:39,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-15 00:03:39,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 279 transitions. [2024-10-15 00:03:39,577 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3032608695652174 [2024-10-15 00:03:39,577 INFO L175 Difference]: Start difference. First operand has 79 places, 75 transitions, 233 flow. Second operand 10 states and 279 transitions. [2024-10-15 00:03:39,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 99 transitions, 547 flow [2024-10-15 00:03:39,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 99 transitions, 521 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-10-15 00:03:39,582 INFO L231 Difference]: Finished difference. Result has 89 places, 99 transitions, 463 flow [2024-10-15 00:03:39,583 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=463, PETRI_PLACES=89, PETRI_TRANSITIONS=99} [2024-10-15 00:03:39,584 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, -3 predicate places. [2024-10-15 00:03:39,585 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 99 transitions, 463 flow [2024-10-15 00:03:39,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 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) [2024-10-15 00:03:39,585 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:39,586 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:39,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-15 00:03:39,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:39,793 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-15 00:03:39,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:39,794 INFO L85 PathProgramCache]: Analyzing trace with hash 791167156, now seen corresponding path program 1 times [2024-10-15 00:03:39,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:39,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682129382] [2024-10-15 00:03:39,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:39,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:39,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:40,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:40,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:40,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682129382] [2024-10-15 00:03:40,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682129382] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:40,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089649686] [2024-10-15 00:03:40,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:40,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:40,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:40,203 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:03:40,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 00:03:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:40,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-15 00:03:40,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:40,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-15 00:03:40,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:40,486 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:40,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-15 00:03:40,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-10-15 00:03:40,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:40,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089649686] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:40,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:40,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-10-15 00:03:40,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48688756] [2024-10-15 00:03:40,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:40,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-15 00:03:40,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:40,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-15 00:03:40,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-15 00:03:40,587 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 92 [2024-10-15 00:03:40,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 99 transitions, 463 flow. Second operand has 13 states, 13 states have (on average 25.76923076923077) internal successors, (335), 13 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:40,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:40,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 92 [2024-10-15 00:03:40,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:44,523 INFO L124 PetriNetUnfolderBase]: 12898/21057 cut-off events. [2024-10-15 00:03:44,523 INFO L125 PetriNetUnfolderBase]: For 180/180 co-relation queries the response was YES. [2024-10-15 00:03:44,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39757 conditions, 21057 events. 12898/21057 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 1323. Compared 167883 event pairs, 3874 based on Foata normal form. 0/12032 useless extension candidates. Maximal degree in co-relation 39654. Up to 7336 conditions per place. [2024-10-15 00:03:44,759 INFO L140 encePairwiseOnDemand]: 75/92 looper letters, 119 selfloop transitions, 24 changer transitions 0/162 dead transitions. [2024-10-15 00:03:44,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 162 transitions, 881 flow [2024-10-15 00:03:44,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-15 00:03:44,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-15 00:03:44,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 309 transitions. [2024-10-15 00:03:44,763 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41983695652173914 [2024-10-15 00:03:44,763 INFO L175 Difference]: Start difference. First operand has 89 places, 99 transitions, 463 flow. Second operand 8 states and 309 transitions. [2024-10-15 00:03:44,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 162 transitions, 881 flow [2024-10-15 00:03:44,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 162 transitions, 820 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-10-15 00:03:44,771 INFO L231 Difference]: Finished difference. Result has 95 places, 107 transitions, 499 flow [2024-10-15 00:03:44,771 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=499, PETRI_PLACES=95, PETRI_TRANSITIONS=107} [2024-10-15 00:03:44,772 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 3 predicate places. [2024-10-15 00:03:44,772 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 107 transitions, 499 flow [2024-10-15 00:03:44,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 25.76923076923077) internal successors, (335), 13 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:44,773 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:44,773 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:44,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-15 00:03:44,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:44,974 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-15 00:03:44,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:44,975 INFO L85 PathProgramCache]: Analyzing trace with hash 791167157, now seen corresponding path program 1 times [2024-10-15 00:03:44,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:44,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212800079] [2024-10-15 00:03:44,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:44,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:45,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:45,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:45,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:45,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212800079] [2024-10-15 00:03:45,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212800079] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:45,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684255006] [2024-10-15 00:03:45,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:45,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:45,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:45,358 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) [2024-10-15 00:03:45,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 00:03:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:45,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-15 00:03:45,538 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:45,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-15 00:03:45,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:45,618 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:45,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-10-15 00:03:45,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-10-15 00:03:45,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:45,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684255006] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:45,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:45,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-10-15 00:03:45,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932725228] [2024-10-15 00:03:45,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:45,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-15 00:03:45,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:45,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-15 00:03:45,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-15 00:03:45,721 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 92 [2024-10-15 00:03:45,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 107 transitions, 499 flow. Second operand has 13 states, 13 states have (on average 25.76923076923077) internal successors, (335), 13 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:45,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:45,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 92 [2024-10-15 00:03:45,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:48,403 INFO L124 PetriNetUnfolderBase]: 12247/20021 cut-off events. [2024-10-15 00:03:48,404 INFO L125 PetriNetUnfolderBase]: For 4170/4170 co-relation queries the response was YES. [2024-10-15 00:03:48,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44682 conditions, 20021 events. 12247/20021 cut-off events. For 4170/4170 co-relation queries the response was YES. Maximal size of possible extension queue 1301. Compared 159185 event pairs, 3506 based on Foata normal form. 0/11834 useless extension candidates. Maximal degree in co-relation 44584. Up to 6419 conditions per place. [2024-10-15 00:03:48,627 INFO L140 encePairwiseOnDemand]: 75/92 looper letters, 118 selfloop transitions, 24 changer transitions 0/161 dead transitions. [2024-10-15 00:03:48,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 161 transitions, 895 flow [2024-10-15 00:03:48,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-15 00:03:48,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-15 00:03:48,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 308 transitions. [2024-10-15 00:03:48,630 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41847826086956524 [2024-10-15 00:03:48,630 INFO L175 Difference]: Start difference. First operand has 95 places, 107 transitions, 499 flow. Second operand 8 states and 308 transitions. [2024-10-15 00:03:48,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 161 transitions, 895 flow [2024-10-15 00:03:48,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 161 transitions, 882 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-15 00:03:48,643 INFO L231 Difference]: Finished difference. Result has 99 places, 106 transitions, 530 flow [2024-10-15 00:03:48,643 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=530, PETRI_PLACES=99, PETRI_TRANSITIONS=106} [2024-10-15 00:03:48,644 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 7 predicate places. [2024-10-15 00:03:48,644 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 106 transitions, 530 flow [2024-10-15 00:03:48,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 25.76923076923077) internal successors, (335), 13 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:48,645 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:48,645 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:48,661 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-15 00:03:48,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:48,846 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-15 00:03:48,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:48,846 INFO L85 PathProgramCache]: Analyzing trace with hash 791167159, now seen corresponding path program 1 times [2024-10-15 00:03:48,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:48,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025319933] [2024-10-15 00:03:48,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:48,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:49,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:49,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:49,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025319933] [2024-10-15 00:03:49,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025319933] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:49,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972611504] [2024-10-15 00:03:49,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:49,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:49,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:49,315 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) [2024-10-15 00:03:49,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-15 00:03:49,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:49,477 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-15 00:03:49,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:49,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-15 00:03:49,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-15 00:03:49,565 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-15 00:03:49,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-15 00:03:49,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-15 00:03:49,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:49,636 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:49,781 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-15 00:03:49,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-10-15 00:03:49,794 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-15 00:03:49,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2024-10-15 00:03:49,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2024-10-15 00:03:49,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:49,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972611504] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:49,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:49,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2024-10-15 00:03:49,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516096689] [2024-10-15 00:03:49,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:49,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-15 00:03:49,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:49,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-15 00:03:49,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=190, Unknown=2, NotChecked=0, Total=240 [2024-10-15 00:03:49,885 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 92 [2024-10-15 00:03:49,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 106 transitions, 530 flow. Second operand has 16 states, 16 states have (on average 24.875) internal successors, (398), 16 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:49,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:49,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 92 [2024-10-15 00:03:49,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:52,762 INFO L124 PetriNetUnfolderBase]: 12898/20668 cut-off events. [2024-10-15 00:03:52,763 INFO L125 PetriNetUnfolderBase]: For 7382/7382 co-relation queries the response was YES. [2024-10-15 00:03:52,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48670 conditions, 20668 events. 12898/20668 cut-off events. For 7382/7382 co-relation queries the response was YES. Maximal size of possible extension queue 1337. Compared 160602 event pairs, 5487 based on Foata normal form. 0/12630 useless extension candidates. Maximal degree in co-relation 48571. Up to 10743 conditions per place. [2024-10-15 00:03:52,954 INFO L140 encePairwiseOnDemand]: 80/92 looper letters, 125 selfloop transitions, 19 changer transitions 0/162 dead transitions. [2024-10-15 00:03:52,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 162 transitions, 939 flow [2024-10-15 00:03:52,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-15 00:03:52,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-15 00:03:52,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 374 transitions. [2024-10-15 00:03:52,957 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3695652173913043 [2024-10-15 00:03:52,957 INFO L175 Difference]: Start difference. First operand has 99 places, 106 transitions, 530 flow. Second operand 11 states and 374 transitions. [2024-10-15 00:03:52,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 162 transitions, 939 flow [2024-10-15 00:03:52,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 162 transitions, 910 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-15 00:03:52,976 INFO L231 Difference]: Finished difference. Result has 104 places, 106 transitions, 542 flow [2024-10-15 00:03:52,976 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=542, PETRI_PLACES=104, PETRI_TRANSITIONS=106} [2024-10-15 00:03:52,978 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 12 predicate places. [2024-10-15 00:03:52,978 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 106 transitions, 542 flow [2024-10-15 00:03:52,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 24.875) internal successors, (398), 16 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:52,979 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:52,980 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:53,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-15 00:03:53,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:53,184 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-15 00:03:53,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:53,184 INFO L85 PathProgramCache]: Analyzing trace with hash 791167160, now seen corresponding path program 1 times [2024-10-15 00:03:53,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:53,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827330105] [2024-10-15 00:03:53,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:53,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:53,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:53,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:53,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827330105] [2024-10-15 00:03:53,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827330105] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:53,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970629126] [2024-10-15 00:03:53,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:53,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:53,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:53,589 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) [2024-10-15 00:03:53,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-15 00:03:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:53,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-15 00:03:53,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:53,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-15 00:03:53,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-15 00:03:53,800 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-15 00:03:53,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-15 00:03:53,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-15 00:03:53,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:53,864 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:53,997 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-15 00:03:53,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-10-15 00:03:54,006 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-15 00:03:54,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2024-10-15 00:03:54,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2024-10-15 00:03:54,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:54,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970629126] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:54,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:54,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2024-10-15 00:03:54,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493884488] [2024-10-15 00:03:54,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:54,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-15 00:03:54,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:54,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-15 00:03:54,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=190, Unknown=2, NotChecked=0, Total=240 [2024-10-15 00:03:54,058 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 92 [2024-10-15 00:03:54,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 106 transitions, 542 flow. Second operand has 16 states, 16 states have (on average 24.875) internal successors, (398), 16 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:54,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:54,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 92 [2024-10-15 00:03:54,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:56,677 INFO L124 PetriNetUnfolderBase]: 12247/20005 cut-off events. [2024-10-15 00:03:56,678 INFO L125 PetriNetUnfolderBase]: For 9310/9310 co-relation queries the response was YES. [2024-10-15 00:03:56,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47603 conditions, 20005 events. 12247/20005 cut-off events. For 9310/9310 co-relation queries the response was YES. Maximal size of possible extension queue 1339. Compared 158454 event pairs, 5119 based on Foata normal form. 0/12783 useless extension candidates. Maximal degree in co-relation 47503. Up to 10743 conditions per place. [2024-10-15 00:03:56,860 INFO L140 encePairwiseOnDemand]: 80/92 looper letters, 124 selfloop transitions, 19 changer transitions 0/161 dead transitions. [2024-10-15 00:03:56,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 161 transitions, 942 flow [2024-10-15 00:03:56,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-15 00:03:56,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-15 00:03:56,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 373 transitions. [2024-10-15 00:03:56,862 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3685770750988142 [2024-10-15 00:03:56,862 INFO L175 Difference]: Start difference. First operand has 104 places, 106 transitions, 542 flow. Second operand 11 states and 373 transitions. [2024-10-15 00:03:56,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 161 transitions, 942 flow [2024-10-15 00:03:56,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 161 transitions, 905 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-15 00:03:56,877 INFO L231 Difference]: Finished difference. Result has 108 places, 105 transitions, 539 flow [2024-10-15 00:03:56,877 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=539, PETRI_PLACES=108, PETRI_TRANSITIONS=105} [2024-10-15 00:03:56,878 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 16 predicate places. [2024-10-15 00:03:56,878 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 105 transitions, 539 flow [2024-10-15 00:03:56,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 24.875) internal successors, (398), 16 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:56,879 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:56,879 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:56,898 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-15 00:03:57,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:57,080 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-15 00:03:57,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:57,080 INFO L85 PathProgramCache]: Analyzing trace with hash 791167165, now seen corresponding path program 1 times [2024-10-15 00:03:57,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:57,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582291329] [2024-10-15 00:03:57,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:57,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:57,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 00:03:57,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:57,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582291329] [2024-10-15 00:03:57,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582291329] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:03:57,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:03:57,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-15 00:03:57,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202217304] [2024-10-15 00:03:57,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:57,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:03:57,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:57,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:03:57,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:03:57,191 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 92 [2024-10-15 00:03:57,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 105 transitions, 539 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:57,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:57,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 92 [2024-10-15 00:03:57,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:59,116 INFO L124 PetriNetUnfolderBase]: 11583/18762 cut-off events. [2024-10-15 00:03:59,116 INFO L125 PetriNetUnfolderBase]: For 11389/11389 co-relation queries the response was YES. [2024-10-15 00:03:59,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45273 conditions, 18762 events. 11583/18762 cut-off events. For 11389/11389 co-relation queries the response was YES. Maximal size of possible extension queue 1531. Compared 151170 event pairs, 2385 based on Foata normal form. 0/12333 useless extension candidates. Maximal degree in co-relation 45173. Up to 12573 conditions per place. [2024-10-15 00:03:59,334 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 113 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2024-10-15 00:03:59,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 133 transitions, 826 flow [2024-10-15 00:03:59,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:03:59,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:03:59,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2024-10-15 00:03:59,336 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5507246376811594 [2024-10-15 00:03:59,336 INFO L175 Difference]: Start difference. First operand has 108 places, 105 transitions, 539 flow. Second operand 3 states and 152 transitions. [2024-10-15 00:03:59,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 133 transitions, 826 flow [2024-10-15 00:03:59,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 133 transitions, 789 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-10-15 00:03:59,366 INFO L231 Difference]: Finished difference. Result has 102 places, 104 transitions, 504 flow [2024-10-15 00:03:59,366 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=504, PETRI_PLACES=102, PETRI_TRANSITIONS=104} [2024-10-15 00:03:59,367 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 10 predicate places. [2024-10-15 00:03:59,368 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 104 transitions, 504 flow [2024-10-15 00:03:59,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:59,368 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:59,368 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:59,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-15 00:03:59,369 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-15 00:03:59,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:59,369 INFO L85 PathProgramCache]: Analyzing trace with hash 23244557, now seen corresponding path program 1 times [2024-10-15 00:03:59,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:59,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173424577] [2024-10-15 00:03:59,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:59,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:59,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:59,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:59,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:59,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173424577] [2024-10-15 00:03:59,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173424577] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:59,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035897622] [2024-10-15 00:03:59,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:59,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:59,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:59,487 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) [2024-10-15 00:03:59,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-15 00:03:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:59,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-15 00:03:59,652 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:59,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:59,715 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:59,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:59,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035897622] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:59,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:59,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-10-15 00:03:59,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3888411] [2024-10-15 00:03:59,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:59,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-15 00:03:59,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:59,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-15 00:03:59,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-10-15 00:03:59,896 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 92 [2024-10-15 00:03:59,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 104 transitions, 504 flow. Second operand has 17 states, 17 states have (on average 20.705882352941178) internal successors, (352), 17 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:59,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:59,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 92 [2024-10-15 00:03:59,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:02,468 INFO L124 PetriNetUnfolderBase]: 13671/21795 cut-off events. [2024-10-15 00:04:02,469 INFO L125 PetriNetUnfolderBase]: For 10128/10128 co-relation queries the response was YES. [2024-10-15 00:04:02,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54027 conditions, 21795 events. 13671/21795 cut-off events. For 10128/10128 co-relation queries the response was YES. Maximal size of possible extension queue 1389. Compared 169068 event pairs, 11286 based on Foata normal form. 0/14140 useless extension candidates. Maximal degree in co-relation 53893. Up to 15849 conditions per place. [2024-10-15 00:04:02,740 INFO L140 encePairwiseOnDemand]: 82/92 looper letters, 115 selfloop transitions, 51 changer transitions 0/183 dead transitions. [2024-10-15 00:04:02,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 183 transitions, 1208 flow [2024-10-15 00:04:02,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-15 00:04:02,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-15 00:04:02,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 396 transitions. [2024-10-15 00:04:02,743 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30745341614906835 [2024-10-15 00:04:02,743 INFO L175 Difference]: Start difference. First operand has 102 places, 104 transitions, 504 flow. Second operand 14 states and 396 transitions. [2024-10-15 00:04:02,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 183 transitions, 1208 flow [2024-10-15 00:04:02,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 183 transitions, 1206 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:04:02,756 INFO L231 Difference]: Finished difference. Result has 118 places, 120 transitions, 762 flow [2024-10-15 00:04:02,756 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=762, PETRI_PLACES=118, PETRI_TRANSITIONS=120} [2024-10-15 00:04:02,758 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 26 predicate places. [2024-10-15 00:04:02,758 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 120 transitions, 762 flow [2024-10-15 00:04:02,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 20.705882352941178) internal successors, (352), 17 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:02,759 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:02,759 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-15 00:04:02,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-15 00:04:02,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:02,960 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-15 00:04:02,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:02,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1712704437, now seen corresponding path program 2 times [2024-10-15 00:04:02,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:02,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924846021] [2024-10-15 00:04:02,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:02,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:03,153 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:03,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:03,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924846021] [2024-10-15 00:04:03,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924846021] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:04:03,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216395767] [2024-10-15 00:04:03,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:04:03,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:03,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:03,157 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) [2024-10-15 00:04:03,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-15 00:04:03,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-15 00:04:03,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:04:03,308 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-15 00:04:03,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:04:03,347 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-15 00:04:03,347 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:04:03,369 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-15 00:04:03,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216395767] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:04:03,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:04:03,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-15 00:04:03,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903232259] [2024-10-15 00:04:03,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:04:03,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-15 00:04:03,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:03,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-15 00:04:03,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-15 00:04:03,401 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 92 [2024-10-15 00:04:03,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 120 transitions, 762 flow. Second operand has 14 states, 14 states have (on average 21.142857142857142) internal successors, (296), 14 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:03,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:03,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 92 [2024-10-15 00:04:03,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:05,965 INFO L124 PetriNetUnfolderBase]: 12745/20784 cut-off events. [2024-10-15 00:04:05,965 INFO L125 PetriNetUnfolderBase]: For 12359/12359 co-relation queries the response was YES. [2024-10-15 00:04:06,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53672 conditions, 20784 events. 12745/20784 cut-off events. For 12359/12359 co-relation queries the response was YES. Maximal size of possible extension queue 1442. Compared 165308 event pairs, 11556 based on Foata normal form. 5/13863 useless extension candidates. Maximal degree in co-relation 53446. Up to 18205 conditions per place. [2024-10-15 00:04:06,239 INFO L140 encePairwiseOnDemand]: 83/92 looper letters, 55 selfloop transitions, 57 changer transitions 0/130 dead transitions. [2024-10-15 00:04:06,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 130 transitions, 1087 flow [2024-10-15 00:04:06,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-15 00:04:06,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-15 00:04:06,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 561 transitions. [2024-10-15 00:04:06,242 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.25407608695652173 [2024-10-15 00:04:06,243 INFO L175 Difference]: Start difference. First operand has 118 places, 120 transitions, 762 flow. Second operand 24 states and 561 transitions. [2024-10-15 00:04:06,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 130 transitions, 1087 flow [2024-10-15 00:04:06,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 130 transitions, 1058 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-10-15 00:04:06,273 INFO L231 Difference]: Finished difference. Result has 140 places, 130 transitions, 980 flow [2024-10-15 00:04:06,273 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=727, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=980, PETRI_PLACES=140, PETRI_TRANSITIONS=130} [2024-10-15 00:04:06,273 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 48 predicate places. [2024-10-15 00:04:06,274 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 130 transitions, 980 flow [2024-10-15 00:04:06,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.142857142857142) internal successors, (296), 14 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:06,274 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:06,274 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:04:06,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-15 00:04:06,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:06,475 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-15 00:04:06,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:06,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1118034286, now seen corresponding path program 1 times [2024-10-15 00:04:06,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:06,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767311774] [2024-10-15 00:04:06,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:06,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:06,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 00:04:06,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:06,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767311774] [2024-10-15 00:04:06,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767311774] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:04:06,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:04:06,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:04:06,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213081482] [2024-10-15 00:04:06,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:04:06,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:04:06,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:06,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:04:06,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:04:06,557 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 92 [2024-10-15 00:04:06,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 130 transitions, 980 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:06,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:06,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 92 [2024-10-15 00:04:06,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:09,312 INFO L124 PetriNetUnfolderBase]: 14357/23748 cut-off events. [2024-10-15 00:04:09,312 INFO L125 PetriNetUnfolderBase]: For 11855/11927 co-relation queries the response was YES. [2024-10-15 00:04:09,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59625 conditions, 23748 events. 14357/23748 cut-off events. For 11855/11927 co-relation queries the response was YES. Maximal size of possible extension queue 1501. Compared 195402 event pairs, 10802 based on Foata normal form. 680/16934 useless extension candidates. Maximal degree in co-relation 59474. Up to 17102 conditions per place. [2024-10-15 00:04:09,607 INFO L140 encePairwiseOnDemand]: 86/92 looper letters, 168 selfloop transitions, 4 changer transitions 0/189 dead transitions. [2024-10-15 00:04:09,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 189 transitions, 1472 flow [2024-10-15 00:04:09,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:04:09,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:04:09,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 198 transitions. [2024-10-15 00:04:09,609 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5380434782608695 [2024-10-15 00:04:09,609 INFO L175 Difference]: Start difference. First operand has 140 places, 130 transitions, 980 flow. Second operand 4 states and 198 transitions. [2024-10-15 00:04:09,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 189 transitions, 1472 flow [2024-10-15 00:04:09,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 189 transitions, 1328 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-10-15 00:04:09,628 INFO L231 Difference]: Finished difference. Result has 134 places, 131 transitions, 857 flow [2024-10-15 00:04:09,628 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=857, PETRI_PLACES=134, PETRI_TRANSITIONS=131} [2024-10-15 00:04:09,629 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 42 predicate places. [2024-10-15 00:04:09,629 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 131 transitions, 857 flow [2024-10-15 00:04:09,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:09,629 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:09,629 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:04:09,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-15 00:04:09,629 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-15 00:04:09,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:09,630 INFO L85 PathProgramCache]: Analyzing trace with hash 815729952, now seen corresponding path program 1 times [2024-10-15 00:04:09,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:09,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963605820] [2024-10-15 00:04:09,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:09,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:10,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:10,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:10,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963605820] [2024-10-15 00:04:10,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963605820] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:04:10,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686316601] [2024-10-15 00:04:10,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:10,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:10,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:10,149 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) [2024-10-15 00:04:10,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-15 00:04:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:10,308 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-10-15 00:04:10,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:04:10,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-15 00:04:10,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-15 00:04:10,427 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-15 00:04:10,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-15 00:04:10,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-15 00:04:10,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:10,525 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:04:10,828 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-15 00:04:10,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2024-10-15 00:04:10,839 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-15 00:04:10,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 39 [2024-10-15 00:04:10,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2024-10-15 00:04:10,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:10,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686316601] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:04:10,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:04:10,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-10-15 00:04:10,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456306644] [2024-10-15 00:04:10,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:04:10,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-15 00:04:10,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:10,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-15 00:04:10,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=256, Unknown=3, NotChecked=0, Total=306 [2024-10-15 00:04:11,016 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 92 [2024-10-15 00:04:11,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 131 transitions, 857 flow. Second operand has 18 states, 18 states have (on average 17.11111111111111) internal successors, (308), 18 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:11,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:11,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 92 [2024-10-15 00:04:11,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:17,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-15 00:04:27,526 INFO L124 PetriNetUnfolderBase]: 50244/80307 cut-off events. [2024-10-15 00:04:27,527 INFO L125 PetriNetUnfolderBase]: For 69352/69352 co-relation queries the response was YES. [2024-10-15 00:04:28,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214614 conditions, 80307 events. 50244/80307 cut-off events. For 69352/69352 co-relation queries the response was YES. Maximal size of possible extension queue 2712. Compared 674847 event pairs, 30686 based on Foata normal form. 0/53009 useless extension candidates. Maximal degree in co-relation 214423. Up to 22500 conditions per place. [2024-10-15 00:04:28,432 INFO L140 encePairwiseOnDemand]: 80/92 looper letters, 296 selfloop transitions, 84 changer transitions 4/397 dead transitions. [2024-10-15 00:04:28,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 397 transitions, 2914 flow [2024-10-15 00:04:28,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-15 00:04:28,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-15 00:04:28,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 710 transitions. [2024-10-15 00:04:28,436 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.285829307568438 [2024-10-15 00:04:28,436 INFO L175 Difference]: Start difference. First operand has 134 places, 131 transitions, 857 flow. Second operand 27 states and 710 transitions. [2024-10-15 00:04:28,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 397 transitions, 2914 flow [2024-10-15 00:04:28,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 397 transitions, 2866 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-15 00:04:28,504 INFO L231 Difference]: Finished difference. Result has 161 places, 157 transitions, 1242 flow [2024-10-15 00:04:28,504 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=851, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1242, PETRI_PLACES=161, PETRI_TRANSITIONS=157} [2024-10-15 00:04:28,505 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 69 predicate places. [2024-10-15 00:04:28,505 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 157 transitions, 1242 flow [2024-10-15 00:04:28,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 17.11111111111111) internal successors, (308), 18 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:28,505 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:28,506 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:04:28,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-15 00:04:28,706 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,SelfDestructingSolverStorable12 [2024-10-15 00:04:28,707 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2024-10-15 00:04:28,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:28,707 INFO L85 PathProgramCache]: Analyzing trace with hash 815729953, now seen corresponding path program 1 times [2024-10-15 00:04:28,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:28,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505825974] [2024-10-15 00:04:28,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:28,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:28,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:29,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:29,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:29,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505825974] [2024-10-15 00:04:29,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505825974] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:04:29,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077034150] [2024-10-15 00:04:29,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:29,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:29,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:29,447 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) [2024-10-15 00:04:29,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-15 00:04:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:29,631 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-15 00:04:29,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:04:29,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-15 00:04:29,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-10-15 00:04:29,793 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-15 00:04:29,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-15 00:04:29,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-10-15 00:04:30,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:30,046 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:04:30,217 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_193 (Array Int Int)) (~M~0 Int)) (or (< ~M~0 0) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_193) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))) 2147483648) (< c_~N~0 (+ ~M~0 1)))) is different from false [2024-10-15 00:04:30,402 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-15 00:04:30,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2024-10-15 00:04:30,415 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-15 00:04:30,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 33 [2024-10-15 00:04:30,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-10-15 00:04:30,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-10-15 00:04:30,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077034150] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:04:30,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:04:30,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2024-10-15 00:04:30,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47893560] [2024-10-15 00:04:30,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:04:30,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-15 00:04:30,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:30,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-15 00:04:30,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=399, Unknown=1, NotChecked=40, Total=506 [2024-10-15 00:04:30,546 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 92 [2024-10-15 00:04:30,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 157 transitions, 1242 flow. Second operand has 23 states, 23 states have (on average 17.217391304347824) internal successors, (396), 23 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:30,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:30,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 92 [2024-10-15 00:04:30,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand