./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-prod-cons3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4a390ef5 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-prod-cons3.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 41874b69ed787f1d4b0fd199a95bb437bfc8aab0f734c194621d2ef33cc65cc9 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 23:43:50,393 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 23:43:50,460 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-24 23:43:50,466 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 23:43:50,466 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 23:43:50,498 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 23:43:50,499 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 23:43:50,499 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 23:43:50,499 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 23:43:50,502 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 23:43:50,502 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 23:43:50,503 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 23:43:50,503 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 23:43:50,503 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 23:43:50,503 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 23:43:50,504 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 23:43:50,504 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 23:43:50,505 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 23:43:50,505 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 23:43:50,505 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 23:43:50,506 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 23:43:50,506 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 23:43:50,506 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 23:43:50,506 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 23:43:50,506 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 23:43:50,507 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-24 23:43:50,507 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 23:43:50,507 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 23:43:50,507 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 23:43:50,507 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 23:43:50,507 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 23:43:50,508 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 23:43:50,508 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 23:43:50,508 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 23:43:50,508 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:43:50,508 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 23:43:50,508 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 23:43:50,509 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 23:43:50,509 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 23:43:50,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 23:43:50,509 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 23:43:50,511 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 23:43:50,511 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 23:43:50,511 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 23:43:50,511 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41874b69ed787f1d4b0fd199a95bb437bfc8aab0f734c194621d2ef33cc65cc9 [2024-10-24 23:43:50,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 23:43:50,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 23:43:50,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 23:43:50,760 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 23:43:50,761 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 23:43:50,762 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2024-10-24 23:43:52,094 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 23:43:52,369 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 23:43:52,369 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2024-10-24 23:43:52,387 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f449a078b/9a90fe4cafa3452bbbdca6ae613ed5b9/FLAG9e5d0ee8f [2024-10-24 23:43:52,670 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f449a078b/9a90fe4cafa3452bbbdca6ae613ed5b9 [2024-10-24 23:43:52,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 23:43:52,673 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 23:43:52,675 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 23:43:52,676 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 23:43:52,680 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 23:43:52,681 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:43:52" (1/1) ... [2024-10-24 23:43:52,682 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9352c03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:52, skipping insertion in model container [2024-10-24 23:43:52,684 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:43:52" (1/1) ... [2024-10-24 23:43:52,710 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 23:43:52,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:43:52,924 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 23:43:52,953 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:43:52,975 INFO L204 MainTranslator]: Completed translation [2024-10-24 23:43:52,976 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:52 WrapperNode [2024-10-24 23:43:52,978 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 23:43:52,979 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 23:43:52,980 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 23:43:52,980 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 23:43:52,985 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:52" (1/1) ... [2024-10-24 23:43:52,998 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:52" (1/1) ... [2024-10-24 23:43:53,030 INFO L138 Inliner]: procedures = 25, calls = 54, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 278 [2024-10-24 23:43:53,034 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 23:43:53,035 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 23:43:53,035 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 23:43:53,035 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 23:43:53,046 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:52" (1/1) ... [2024-10-24 23:43:53,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:52" (1/1) ... [2024-10-24 23:43:53,050 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:52" (1/1) ... [2024-10-24 23:43:53,074 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 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]. [2024-10-24 23:43:53,074 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:52" (1/1) ... [2024-10-24 23:43:53,075 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:52" (1/1) ... [2024-10-24 23:43:53,086 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:52" (1/1) ... [2024-10-24 23:43:53,092 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:52" (1/1) ... [2024-10-24 23:43:53,094 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:52" (1/1) ... [2024-10-24 23:43:53,095 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:52" (1/1) ... [2024-10-24 23:43:53,099 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 23:43:53,100 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 23:43:53,100 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 23:43:53,100 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 23:43:53,101 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:52" (1/1) ... [2024-10-24 23:43:53,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:43:53,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:43:53,133 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) [2024-10-24 23:43:53,135 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 [2024-10-24 23:43:53,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 23:43:53,168 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 23:43:53,168 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 23:43:53,168 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 23:43:53,168 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 23:43:53,168 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-24 23:43:53,168 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-24 23:43:53,168 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-24 23:43:53,168 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-24 23:43:53,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 23:43:53,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 23:43:53,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 23:43:53,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 23:43:53,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 23:43:53,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 23:43:53,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 23:43:53,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 23:43:53,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 23:43:53,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 23:43:53,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 23:43:53,174 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 23:43:53,353 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 23:43:53,354 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 23:43:53,716 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 23:43:53,717 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 23:43:53,984 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 23:43:53,985 INFO L314 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-24 23:43:53,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:43:53 BoogieIcfgContainer [2024-10-24 23:43:53,986 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 23:43:53,987 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 23:43:53,987 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 23:43:53,990 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 23:43:53,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:43:52" (1/3) ... [2024-10-24 23:43:53,991 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7120fc61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:43:53, skipping insertion in model container [2024-10-24 23:43:53,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:52" (2/3) ... [2024-10-24 23:43:53,991 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7120fc61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:43:53, skipping insertion in model container [2024-10-24 23:43:53,992 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:43:53" (3/3) ... [2024-10-24 23:43:53,993 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons3.wvr.c [2024-10-24 23:43:54,006 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 23:43:54,007 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-10-24 23:43:54,007 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 23:43:54,073 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-24 23:43:54,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 77 transitions, 182 flow [2024-10-24 23:43:54,124 INFO L124 PetriNetUnfolderBase]: 6/73 cut-off events. [2024-10-24 23:43:54,125 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-24 23:43:54,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 73 events. 6/73 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 248 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2024-10-24 23:43:54,129 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 77 transitions, 182 flow [2024-10-24 23:43:54,132 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 71 transitions, 163 flow [2024-10-24 23:43:54,138 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:43:54,144 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;@74bb05ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:43:54,145 INFO L334 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2024-10-24 23:43:54,147 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:43:54,148 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-24 23:43:54,148 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:43:54,148 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:54,149 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 23:43:54,149 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-24 23:43:54,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:54,153 INFO L85 PathProgramCache]: Analyzing trace with hash 815461, now seen corresponding path program 1 times [2024-10-24 23:43:54,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:54,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435158043] [2024-10-24 23:43:54,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:54,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:54,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:54,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:54,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435158043] [2024-10-24 23:43:54,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435158043] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:43:54,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:43:54,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:43:54,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332792472] [2024-10-24 23:43:54,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:43:54,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:43:54,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:54,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:43:54,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:43:54,557 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-10-24 23:43:54,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 163 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) [2024-10-24 23:43:54,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:54,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-10-24 23:43:54,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:43:58,093 INFO L124 PetriNetUnfolderBase]: 31498/43058 cut-off events. [2024-10-24 23:43:58,093 INFO L125 PetriNetUnfolderBase]: For 1888/1888 co-relation queries the response was YES. [2024-10-24 23:43:58,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85356 conditions, 43058 events. 31498/43058 cut-off events. For 1888/1888 co-relation queries the response was YES. Maximal size of possible extension queue 2747. Compared 293362 event pairs, 25002 based on Foata normal form. 2/28231 useless extension candidates. Maximal degree in co-relation 80473. Up to 40235 conditions per place. [2024-10-24 23:43:58,391 INFO L140 encePairwiseOnDemand]: 62/77 looper letters, 50 selfloop transitions, 7 changer transitions 0/73 dead transitions. [2024-10-24 23:43:58,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 73 transitions, 281 flow [2024-10-24 23:43:58,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:43:58,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:43:58,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2024-10-24 23:43:58,402 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4707792207792208 [2024-10-24 23:43:58,403 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 163 flow. Second operand 4 states and 145 transitions. [2024-10-24 23:43:58,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 73 transitions, 281 flow [2024-10-24 23:43:58,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 73 transitions, 268 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-10-24 23:43:58,548 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 202 flow [2024-10-24 23:43:58,551 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=142, 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=202, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2024-10-24 23:43:58,554 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -5 predicate places. [2024-10-24 23:43:58,554 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 202 flow [2024-10-24 23:43:58,554 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) [2024-10-24 23:43:58,554 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:43:58,555 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-24 23:43:58,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 23:43:58,555 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-24 23:43:58,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:43:58,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1475571405, now seen corresponding path program 1 times [2024-10-24 23:43:58,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:43:58,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494009643] [2024-10-24 23:43:58,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:58,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:43:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:58,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:58,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:43:58,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494009643] [2024-10-24 23:43:58,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494009643] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:43:58,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950812007] [2024-10-24 23:43:58,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:43:58,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:43:58,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:43:58,696 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) [2024-10-24 23:43:58,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 23:43:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:43:58,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:43:58,761 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:43:58,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:43:58,800 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:43:58,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950812007] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:43:58,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:43:58,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-24 23:43:58,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154885164] [2024-10-24 23:43:58,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:43:58,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:43:58,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:43:58,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:43:58,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:43:58,821 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-10-24 23:43:58,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 73 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 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) [2024-10-24 23:43:58,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:43:58,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-10-24 23:43:58,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:44:01,628 INFO L124 PetriNetUnfolderBase]: 31498/43056 cut-off events. [2024-10-24 23:44:01,629 INFO L125 PetriNetUnfolderBase]: For 389/389 co-relation queries the response was YES. [2024-10-24 23:44:01,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84756 conditions, 43056 events. 31498/43056 cut-off events. For 389/389 co-relation queries the response was YES. Maximal size of possible extension queue 2747. Compared 293497 event pairs, 25002 based on Foata normal form. 2/28232 useless extension candidates. Maximal degree in co-relation 84706. Up to 40225 conditions per place. [2024-10-24 23:44:02,095 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 43 selfloop transitions, 12 changer transitions 0/71 dead transitions. [2024-10-24 23:44:02,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 71 transitions, 304 flow [2024-10-24 23:44:02,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 23:44:02,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 23:44:02,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2024-10-24 23:44:02,097 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38311688311688313 [2024-10-24 23:44:02,097 INFO L175 Difference]: Start difference. First operand has 73 places, 73 transitions, 202 flow. Second operand 6 states and 177 transitions. [2024-10-24 23:44:02,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 71 transitions, 304 flow [2024-10-24 23:44:02,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 71 transitions, 304 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:44:02,102 INFO L231 Difference]: Finished difference. Result has 76 places, 71 transitions, 218 flow [2024-10-24 23:44:02,102 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=76, PETRI_TRANSITIONS=71} [2024-10-24 23:44:02,103 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -2 predicate places. [2024-10-24 23:44:02,103 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 71 transitions, 218 flow [2024-10-24 23:44:02,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 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) [2024-10-24 23:44:02,104 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:44:02,104 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-24 23:44:02,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 23:44:02,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:44:02,310 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-24 23:44:02,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:44:02,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1501927541, now seen corresponding path program 1 times [2024-10-24 23:44:02,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:44:02,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680117460] [2024-10-24 23:44:02,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:02,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:44:02,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:02,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:44:02,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:44:02,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680117460] [2024-10-24 23:44:02,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680117460] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:44:02,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492745054] [2024-10-24 23:44:02,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:02,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:44:02,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:44:02,381 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) [2024-10-24 23:44:02,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 23:44:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:02,448 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:44:02,449 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:44:02,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:44:02,471 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:44:02,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:44:02,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492745054] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:44:02,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:44:02,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-24 23:44:02,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132879682] [2024-10-24 23:44:02,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:44:02,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 23:44:02,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:44:02,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 23:44:02,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-24 23:44:02,535 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-10-24 23:44:02,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 71 transitions, 218 flow. Second operand has 12 states, 12 states have (on average 21.083333333333332) internal successors, (253), 12 states have internal predecessors, (253), 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) [2024-10-24 23:44:02,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:44:02,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-10-24 23:44:02,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:44:05,291 INFO L124 PetriNetUnfolderBase]: 31504/43080 cut-off events. [2024-10-24 23:44:05,291 INFO L125 PetriNetUnfolderBase]: For 431/431 co-relation queries the response was YES. [2024-10-24 23:44:05,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84850 conditions, 43080 events. 31504/43080 cut-off events. For 431/431 co-relation queries the response was YES. Maximal size of possible extension queue 2747. Compared 293918 event pairs, 25002 based on Foata normal form. 6/28259 useless extension candidates. Maximal degree in co-relation 84708. Up to 40236 conditions per place. [2024-10-24 23:44:05,673 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 48 selfloop transitions, 25 changer transitions 0/89 dead transitions. [2024-10-24 23:44:05,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 89 transitions, 478 flow [2024-10-24 23:44:05,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 23:44:05,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 23:44:05,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 279 transitions. [2024-10-24 23:44:05,676 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36233766233766235 [2024-10-24 23:44:05,676 INFO L175 Difference]: Start difference. First operand has 76 places, 71 transitions, 218 flow. Second operand 10 states and 279 transitions. [2024-10-24 23:44:05,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 89 transitions, 478 flow [2024-10-24 23:44:05,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 89 transitions, 420 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-10-24 23:44:05,679 INFO L231 Difference]: Finished difference. Result has 83 places, 89 transitions, 358 flow [2024-10-24 23:44:05,679 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=358, PETRI_PLACES=83, PETRI_TRANSITIONS=89} [2024-10-24 23:44:05,680 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 5 predicate places. [2024-10-24 23:44:05,680 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 89 transitions, 358 flow [2024-10-24 23:44:05,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 21.083333333333332) internal successors, (253), 12 states have internal predecessors, (253), 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) [2024-10-24 23:44:05,680 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:44:05,680 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:44:05,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 23:44:05,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-24 23:44:05,885 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-24 23:44:05,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:44:05,886 INFO L85 PathProgramCache]: Analyzing trace with hash 271305435, now seen corresponding path program 1 times [2024-10-24 23:44:05,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:44:05,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246200820] [2024-10-24 23:44:05,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:05,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:44:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:05,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:44:05,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:44:05,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246200820] [2024-10-24 23:44:05,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246200820] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:44:05,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:44:05,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:44:05,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383324533] [2024-10-24 23:44:05,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:44:05,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:44:05,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:44:05,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:44:05,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:44:05,973 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 77 [2024-10-24 23:44:05,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 89 transitions, 358 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) [2024-10-24 23:44:05,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:44:05,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 77 [2024-10-24 23:44:05,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:44:09,110 INFO L124 PetriNetUnfolderBase]: 35298/48559 cut-off events. [2024-10-24 23:44:09,110 INFO L125 PetriNetUnfolderBase]: For 472/472 co-relation queries the response was YES. [2024-10-24 23:44:09,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95727 conditions, 48559 events. 35298/48559 cut-off events. For 472/472 co-relation queries the response was YES. Maximal size of possible extension queue 2760. Compared 332762 event pairs, 28323 based on Foata normal form. 712/33932 useless extension candidates. Maximal degree in co-relation 95631. Up to 40251 conditions per place. [2024-10-24 23:44:09,523 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 108 selfloop transitions, 5 changer transitions 0/131 dead transitions. [2024-10-24 23:44:09,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 131 transitions, 749 flow [2024-10-24 23:44:09,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:44:09,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:44:09,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 207 transitions. [2024-10-24 23:44:09,525 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5376623376623376 [2024-10-24 23:44:09,525 INFO L175 Difference]: Start difference. First operand has 83 places, 89 transitions, 358 flow. Second operand 5 states and 207 transitions. [2024-10-24 23:44:09,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 131 transitions, 749 flow [2024-10-24 23:44:09,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 131 transitions, 715 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-24 23:44:09,528 INFO L231 Difference]: Finished difference. Result has 87 places, 91 transitions, 373 flow [2024-10-24 23:44:09,528 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=373, PETRI_PLACES=87, PETRI_TRANSITIONS=91} [2024-10-24 23:44:09,529 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2024-10-24 23:44:09,529 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 91 transitions, 373 flow [2024-10-24 23:44:09,529 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) [2024-10-24 23:44:09,529 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:44:09,530 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:44:09,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 23:44:09,530 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-24 23:44:09,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:44:09,530 INFO L85 PathProgramCache]: Analyzing trace with hash -151225108, now seen corresponding path program 1 times [2024-10-24 23:44:09,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:44:09,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501621969] [2024-10-24 23:44:09,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:09,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:44:09,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:09,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:44:09,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:44:09,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501621969] [2024-10-24 23:44:09,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501621969] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:44:09,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:44:09,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 23:44:09,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861175962] [2024-10-24 23:44:09,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:44:09,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:44:09,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:44:09,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:44:09,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:44:09,568 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 77 [2024-10-24 23:44:09,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 91 transitions, 373 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2024-10-24 23:44:09,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:44:09,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 77 [2024-10-24 23:44:09,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:44:11,786 INFO L124 PetriNetUnfolderBase]: 32734/46008 cut-off events. [2024-10-24 23:44:11,787 INFO L125 PetriNetUnfolderBase]: For 2790/2790 co-relation queries the response was YES. [2024-10-24 23:44:11,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95277 conditions, 46008 events. 32734/46008 cut-off events. For 2790/2790 co-relation queries the response was YES. Maximal size of possible extension queue 2350. Compared 317361 event pairs, 11055 based on Foata normal form. 751/32668 useless extension candidates. Maximal degree in co-relation 95182. Up to 32693 conditions per place. [2024-10-24 23:44:12,192 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 99 selfloop transitions, 2 changer transitions 0/119 dead transitions. [2024-10-24 23:44:12,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 119 transitions, 645 flow [2024-10-24 23:44:12,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:44:12,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:44:12,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2024-10-24 23:44:12,194 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.645021645021645 [2024-10-24 23:44:12,194 INFO L175 Difference]: Start difference. First operand has 87 places, 91 transitions, 373 flow. Second operand 3 states and 149 transitions. [2024-10-24 23:44:12,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 119 transitions, 645 flow [2024-10-24 23:44:12,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 119 transitions, 641 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-24 23:44:12,199 INFO L231 Difference]: Finished difference. Result has 89 places, 92 transitions, 383 flow [2024-10-24 23:44:12,200 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=383, PETRI_PLACES=89, PETRI_TRANSITIONS=92} [2024-10-24 23:44:12,202 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 11 predicate places. [2024-10-24 23:44:12,202 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 92 transitions, 383 flow [2024-10-24 23:44:12,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2024-10-24 23:44:12,202 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:44:12,202 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:44:12,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 23:44:12,202 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-24 23:44:12,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:44:12,203 INFO L85 PathProgramCache]: Analyzing trace with hash 714889257, now seen corresponding path program 1 times [2024-10-24 23:44:12,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:44:12,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578270266] [2024-10-24 23:44:12,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:12,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:44:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:12,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:44:12,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:44:12,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578270266] [2024-10-24 23:44:12,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578270266] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:44:12,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391434225] [2024-10-24 23:44:12,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:12,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:44:12,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:44:12,333 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) [2024-10-24 23:44:12,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 23:44:12,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:12,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:44:12,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:44:12,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:44:12,421 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:44:12,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391434225] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:44:12,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:44:12,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-10-24 23:44:12,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592536494] [2024-10-24 23:44:12,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:44:12,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:44:12,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:44:12,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:44:12,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-24 23:44:12,423 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 77 [2024-10-24 23:44:12,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 92 transitions, 383 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2024-10-24 23:44:12,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:44:12,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 77 [2024-10-24 23:44:12,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:44:13,971 INFO L124 PetriNetUnfolderBase]: 25607/36182 cut-off events. [2024-10-24 23:44:13,971 INFO L125 PetriNetUnfolderBase]: For 4317/4421 co-relation queries the response was YES. [2024-10-24 23:44:14,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77137 conditions, 36182 events. 25607/36182 cut-off events. For 4317/4421 co-relation queries the response was YES. Maximal size of possible extension queue 1649. Compared 238531 event pairs, 21719 based on Foata normal form. 0/27440 useless extension candidates. Maximal degree in co-relation 77041. Up to 33596 conditions per place. [2024-10-24 23:44:14,304 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 71 selfloop transitions, 1 changer transitions 0/90 dead transitions. [2024-10-24 23:44:14,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 90 transitions, 519 flow [2024-10-24 23:44:14,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:44:14,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:44:14,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-10-24 23:44:14,305 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2024-10-24 23:44:14,305 INFO L175 Difference]: Start difference. First operand has 89 places, 92 transitions, 383 flow. Second operand 3 states and 119 transitions. [2024-10-24 23:44:14,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 90 transitions, 519 flow [2024-10-24 23:44:14,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 90 transitions, 507 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:44:14,310 INFO L231 Difference]: Finished difference. Result has 87 places, 90 transitions, 365 flow [2024-10-24 23:44:14,310 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=365, PETRI_PLACES=87, PETRI_TRANSITIONS=90} [2024-10-24 23:44:14,310 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2024-10-24 23:44:14,310 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 90 transitions, 365 flow [2024-10-24 23:44:14,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2024-10-24 23:44:14,311 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:44:14,311 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:44:14,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 23:44:14,511 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 [2024-10-24 23:44:14,511 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-24 23:44:14,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:44:14,512 INFO L85 PathProgramCache]: Analyzing trace with hash -153412058, now seen corresponding path program 1 times [2024-10-24 23:44:14,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:44:14,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795864880] [2024-10-24 23:44:14,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:14,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:44:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:14,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:44:14,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:44:14,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795864880] [2024-10-24 23:44:14,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795864880] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:44:14,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:44:14,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:44:14,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998934022] [2024-10-24 23:44:14,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:44:14,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:44:14,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:44:14,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:44:14,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:44:14,552 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 77 [2024-10-24 23:44:14,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 90 transitions, 365 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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) [2024-10-24 23:44:14,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:44:14,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 77 [2024-10-24 23:44:14,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:44:15,927 INFO L124 PetriNetUnfolderBase]: 21041/29923 cut-off events. [2024-10-24 23:44:15,927 INFO L125 PetriNetUnfolderBase]: For 3594/3698 co-relation queries the response was YES. [2024-10-24 23:44:16,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63814 conditions, 29923 events. 21041/29923 cut-off events. For 3594/3698 co-relation queries the response was YES. Maximal size of possible extension queue 1331. Compared 193348 event pairs, 17797 based on Foata normal form. 0/23478 useless extension candidates. Maximal degree in co-relation 63797. Up to 27687 conditions per place. [2024-10-24 23:44:16,139 INFO L140 encePairwiseOnDemand]: 75/77 looper letters, 65 selfloop transitions, 6 changer transitions 0/89 dead transitions. [2024-10-24 23:44:16,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 89 transitions, 505 flow [2024-10-24 23:44:16,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:44:16,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:44:16,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2024-10-24 23:44:16,140 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5064935064935064 [2024-10-24 23:44:16,140 INFO L175 Difference]: Start difference. First operand has 87 places, 90 transitions, 365 flow. Second operand 3 states and 117 transitions. [2024-10-24 23:44:16,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 89 transitions, 505 flow [2024-10-24 23:44:16,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 89 transitions, 504 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:44:16,142 INFO L231 Difference]: Finished difference. Result has 87 places, 89 transitions, 374 flow [2024-10-24 23:44:16,143 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=374, PETRI_PLACES=87, PETRI_TRANSITIONS=89} [2024-10-24 23:44:16,143 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2024-10-24 23:44:16,143 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 89 transitions, 374 flow [2024-10-24 23:44:16,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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) [2024-10-24 23:44:16,144 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:44:16,144 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:44:16,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 23:44:16,144 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-24 23:44:16,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:44:16,144 INFO L85 PathProgramCache]: Analyzing trace with hash -153412057, now seen corresponding path program 1 times [2024-10-24 23:44:16,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:44:16,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426982790] [2024-10-24 23:44:16,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:16,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:44:16,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:16,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:44:16,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:44:16,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426982790] [2024-10-24 23:44:16,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426982790] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:44:16,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:44:16,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 23:44:16,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549481050] [2024-10-24 23:44:16,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:44:16,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:44:16,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:44:16,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:44:16,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:44:16,177 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 77 [2024-10-24 23:44:16,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 89 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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) [2024-10-24 23:44:16,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:44:16,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 77 [2024-10-24 23:44:16,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:44:17,226 INFO L124 PetriNetUnfolderBase]: 16475/23664 cut-off events. [2024-10-24 23:44:17,226 INFO L125 PetriNetUnfolderBase]: For 2886/2990 co-relation queries the response was YES. [2024-10-24 23:44:17,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50748 conditions, 23664 events. 16475/23664 cut-off events. For 2886/2990 co-relation queries the response was YES. Maximal size of possible extension queue 1025. Compared 148809 event pairs, 13875 based on Foata normal form. 0/19518 useless extension candidates. Maximal degree in co-relation 50731. Up to 21850 conditions per place. [2024-10-24 23:44:17,423 INFO L140 encePairwiseOnDemand]: 75/77 looper letters, 67 selfloop transitions, 1 changer transitions 2/88 dead transitions. [2024-10-24 23:44:17,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 88 transitions, 512 flow [2024-10-24 23:44:17,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:44:17,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:44:17,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-10-24 23:44:17,424 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5021645021645021 [2024-10-24 23:44:17,424 INFO L175 Difference]: Start difference. First operand has 87 places, 89 transitions, 374 flow. Second operand 3 states and 116 transitions. [2024-10-24 23:44:17,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 88 transitions, 512 flow [2024-10-24 23:44:17,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 88 transitions, 506 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:44:17,427 INFO L231 Difference]: Finished difference. Result has 87 places, 86 transitions, 356 flow [2024-10-24 23:44:17,427 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=356, PETRI_PLACES=87, PETRI_TRANSITIONS=86} [2024-10-24 23:44:17,428 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2024-10-24 23:44:17,428 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 86 transitions, 356 flow [2024-10-24 23:44:17,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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) [2024-10-24 23:44:17,428 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:44:17,428 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:44:17,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 23:44:17,429 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-24 23:44:17,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:44:17,429 INFO L85 PathProgramCache]: Analyzing trace with hash -186163765, now seen corresponding path program 1 times [2024-10-24 23:44:17,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:44:17,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515767278] [2024-10-24 23:44:17,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:17,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:44:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:17,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:44:17,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:44:17,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515767278] [2024-10-24 23:44:17,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515767278] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:44:17,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:44:17,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:44:17,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514484887] [2024-10-24 23:44:17,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:44:17,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:44:17,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:44:17,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:44:17,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:44:17,472 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-10-24 23:44:17,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 86 transitions, 356 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2024-10-24 23:44:17,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:44:17,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-10-24 23:44:17,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:44:19,038 INFO L124 PetriNetUnfolderBase]: 22471/33823 cut-off events. [2024-10-24 23:44:19,039 INFO L125 PetriNetUnfolderBase]: For 3617/3708 co-relation queries the response was YES. [2024-10-24 23:44:19,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69901 conditions, 33823 events. 22471/33823 cut-off events. For 3617/3708 co-relation queries the response was YES. Maximal size of possible extension queue 1347. Compared 244342 event pairs, 9475 based on Foata normal form. 778/26820 useless extension candidates. Maximal degree in co-relation 69883. Up to 16179 conditions per place. [2024-10-24 23:44:19,358 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 121 selfloop transitions, 4 changer transitions 0/140 dead transitions. [2024-10-24 23:44:19,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 140 transitions, 742 flow [2024-10-24 23:44:19,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:44:19,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:44:19,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 182 transitions. [2024-10-24 23:44:19,360 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-10-24 23:44:19,360 INFO L175 Difference]: Start difference. First operand has 87 places, 86 transitions, 356 flow. Second operand 4 states and 182 transitions. [2024-10-24 23:44:19,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 140 transitions, 742 flow [2024-10-24 23:44:19,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 140 transitions, 741 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:44:19,364 INFO L231 Difference]: Finished difference. Result has 88 places, 86 transitions, 368 flow [2024-10-24 23:44:19,364 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=368, PETRI_PLACES=88, PETRI_TRANSITIONS=86} [2024-10-24 23:44:19,365 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 10 predicate places. [2024-10-24 23:44:19,365 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 86 transitions, 368 flow [2024-10-24 23:44:19,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2024-10-24 23:44:19,365 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:44:19,365 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:44:19,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 23:44:19,366 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-24 23:44:19,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:44:19,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1142760029, now seen corresponding path program 1 times [2024-10-24 23:44:19,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:44:19,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567754159] [2024-10-24 23:44:19,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:19,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:44:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:19,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:44:19,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:44:19,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567754159] [2024-10-24 23:44:19,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567754159] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:44:19,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:44:19,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:44:19,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060166007] [2024-10-24 23:44:19,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:44:19,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:44:19,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:44:19,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:44:19,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:44:19,420 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 77 [2024-10-24 23:44:19,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 86 transitions, 368 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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) [2024-10-24 23:44:19,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:44:19,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 77 [2024-10-24 23:44:19,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:44:20,537 INFO L124 PetriNetUnfolderBase]: 15747/22397 cut-off events. [2024-10-24 23:44:20,537 INFO L125 PetriNetUnfolderBase]: For 5927/6759 co-relation queries the response was YES. [2024-10-24 23:44:20,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53047 conditions, 22397 events. 15747/22397 cut-off events. For 5927/6759 co-relation queries the response was YES. Maximal size of possible extension queue 818. Compared 133039 event pairs, 6265 based on Foata normal form. 933/19833 useless extension candidates. Maximal degree in co-relation 53028. Up to 18291 conditions per place. [2024-10-24 23:44:20,731 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 81 selfloop transitions, 2 changer transitions 5/105 dead transitions. [2024-10-24 23:44:20,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 105 transitions, 595 flow [2024-10-24 23:44:20,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:44:20,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:44:20,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 133 transitions. [2024-10-24 23:44:20,733 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2024-10-24 23:44:20,733 INFO L175 Difference]: Start difference. First operand has 88 places, 86 transitions, 368 flow. Second operand 3 states and 133 transitions. [2024-10-24 23:44:20,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 105 transitions, 595 flow [2024-10-24 23:44:20,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 105 transitions, 589 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:44:20,754 INFO L231 Difference]: Finished difference. Result has 89 places, 87 transitions, 377 flow [2024-10-24 23:44:20,755 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=377, PETRI_PLACES=89, PETRI_TRANSITIONS=87} [2024-10-24 23:44:20,755 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 11 predicate places. [2024-10-24 23:44:20,755 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 87 transitions, 377 flow [2024-10-24 23:44:20,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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) [2024-10-24 23:44:20,756 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:44:20,756 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:44:20,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 23:44:20,756 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-24 23:44:20,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:44:20,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1476108552, now seen corresponding path program 1 times [2024-10-24 23:44:20,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:44:20,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235136847] [2024-10-24 23:44:20,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:20,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:44:20,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:20,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:44:20,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:44:20,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235136847] [2024-10-24 23:44:20,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235136847] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:44:20,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:44:20,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:44:20,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148378193] [2024-10-24 23:44:20,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:44:20,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:44:20,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:44:20,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:44:20,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:44:20,825 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 77 [2024-10-24 23:44:20,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 87 transitions, 377 flow. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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) [2024-10-24 23:44:20,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:44:20,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 77 [2024-10-24 23:44:20,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:44:22,097 INFO L124 PetriNetUnfolderBase]: 15747/23240 cut-off events. [2024-10-24 23:44:22,097 INFO L125 PetriNetUnfolderBase]: For 7385/8083 co-relation queries the response was YES. [2024-10-24 23:44:22,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52985 conditions, 23240 events. 15747/23240 cut-off events. For 7385/8083 co-relation queries the response was YES. Maximal size of possible extension queue 838. Compared 150086 event pairs, 4623 based on Foata normal form. 698/20251 useless extension candidates. Maximal degree in co-relation 52964. Up to 10927 conditions per place. [2024-10-24 23:44:22,278 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 118 selfloop transitions, 6 changer transitions 0/140 dead transitions. [2024-10-24 23:44:22,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 140 transitions, 763 flow [2024-10-24 23:44:22,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:44:22,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:44:22,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 205 transitions. [2024-10-24 23:44:22,279 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5324675324675324 [2024-10-24 23:44:22,280 INFO L175 Difference]: Start difference. First operand has 89 places, 87 transitions, 377 flow. Second operand 5 states and 205 transitions. [2024-10-24 23:44:22,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 140 transitions, 763 flow [2024-10-24 23:44:22,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 140 transitions, 753 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-10-24 23:44:22,295 INFO L231 Difference]: Finished difference. Result has 91 places, 86 transitions, 381 flow [2024-10-24 23:44:22,295 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=381, PETRI_PLACES=91, PETRI_TRANSITIONS=86} [2024-10-24 23:44:22,295 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 13 predicate places. [2024-10-24 23:44:22,295 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 86 transitions, 381 flow [2024-10-24 23:44:22,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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) [2024-10-24 23:44:22,296 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:44:22,296 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-24 23:44:22,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 23:44:22,296 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-24 23:44:22,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:44:22,296 INFO L85 PathProgramCache]: Analyzing trace with hash 520320003, now seen corresponding path program 2 times [2024-10-24 23:44:22,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:44:22,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951214435] [2024-10-24 23:44:22,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:22,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:44:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:22,469 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:44:22,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:44:22,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951214435] [2024-10-24 23:44:22,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951214435] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:44:22,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436433855] [2024-10-24 23:44:22,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:44:22,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:44:22,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:44:22,471 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) [2024-10-24 23:44:22,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 23:44:22,534 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 23:44:22,534 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:44:22,535 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 23:44:22,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:44:22,567 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 23:44:22,567 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:44:22,589 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 23:44:22,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436433855] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:44:22,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:44:22,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-24 23:44:22,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540578435] [2024-10-24 23:44:22,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:44:22,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 23:44:22,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:44:22,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 23:44:22,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-24 23:44:22,613 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-10-24 23:44:22,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 86 transitions, 381 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) [2024-10-24 23:44:22,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:44:22,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-10-24 23:44:22,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:44:23,936 INFO L124 PetriNetUnfolderBase]: 15750/22258 cut-off events. [2024-10-24 23:44:23,936 INFO L125 PetriNetUnfolderBase]: For 13062/13774 co-relation queries the response was YES. [2024-10-24 23:44:24,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54092 conditions, 22258 events. 15750/22258 cut-off events. For 13062/13774 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 130534 event pairs, 12494 based on Foata normal form. 692/19087 useless extension candidates. Maximal degree in co-relation 54070. Up to 20668 conditions per place. [2024-10-24 23:44:24,117 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 42 selfloop transitions, 35 changer transitions 0/91 dead transitions. [2024-10-24 23:44:24,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 91 transitions, 564 flow [2024-10-24 23:44:24,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-24 23:44:24,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-24 23:44:24,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 556 transitions. [2024-10-24 23:44:24,119 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3008658008658009 [2024-10-24 23:44:24,119 INFO L175 Difference]: Start difference. First operand has 91 places, 86 transitions, 381 flow. Second operand 24 states and 556 transitions. [2024-10-24 23:44:24,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 91 transitions, 564 flow [2024-10-24 23:44:24,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 91 transitions, 552 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 23:44:24,130 INFO L231 Difference]: Finished difference. Result has 111 places, 91 transitions, 481 flow [2024-10-24 23:44:24,131 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=481, PETRI_PLACES=111, PETRI_TRANSITIONS=91} [2024-10-24 23:44:24,131 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 33 predicate places. [2024-10-24 23:44:24,131 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 91 transitions, 481 flow [2024-10-24 23:44:24,131 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) [2024-10-24 23:44:24,132 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:44:24,132 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:44:24,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 23:44:24,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:44:24,332 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-24 23:44:24,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:44:24,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1823920165, now seen corresponding path program 1 times [2024-10-24 23:44:24,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:44:24,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271481191] [2024-10-24 23:44:24,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:24,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:44:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:24,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:44:24,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:44:24,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271481191] [2024-10-24 23:44:24,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271481191] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:44:24,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:44:24,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:44:24,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867423614] [2024-10-24 23:44:24,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:44:24,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:44:24,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:44:24,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:44:24,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:44:24,402 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 77 [2024-10-24 23:44:24,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 91 transitions, 481 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2024-10-24 23:44:24,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:44:24,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 77 [2024-10-24 23:44:24,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:44:25,716 INFO L124 PetriNetUnfolderBase]: 18145/26027 cut-off events. [2024-10-24 23:44:25,717 INFO L125 PetriNetUnfolderBase]: For 6594/7399 co-relation queries the response was YES. [2024-10-24 23:44:25,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58833 conditions, 26027 events. 18145/26027 cut-off events. For 6594/7399 co-relation queries the response was YES. Maximal size of possible extension queue 790. Compared 159909 event pairs, 14598 based on Foata normal form. 1059/23091 useless extension candidates. Maximal degree in co-relation 58809. Up to 20694 conditions per place. [2024-10-24 23:44:25,946 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 67 selfloop transitions, 8 changer transitions 26/116 dead transitions. [2024-10-24 23:44:25,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 116 transitions, 754 flow [2024-10-24 23:44:25,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:44:25,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:44:25,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2024-10-24 23:44:25,947 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-10-24 23:44:25,947 INFO L175 Difference]: Start difference. First operand has 111 places, 91 transitions, 481 flow. Second operand 4 states and 168 transitions. [2024-10-24 23:44:25,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 116 transitions, 754 flow [2024-10-24 23:44:25,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 116 transitions, 660 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-10-24 23:44:25,957 INFO L231 Difference]: Finished difference. Result has 104 places, 90 transitions, 404 flow [2024-10-24 23:44:25,958 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=404, PETRI_PLACES=104, PETRI_TRANSITIONS=90} [2024-10-24 23:44:25,958 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 26 predicate places. [2024-10-24 23:44:25,958 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 90 transitions, 404 flow [2024-10-24 23:44:25,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2024-10-24 23:44:25,958 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:44:25,958 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-10-24 23:44:25,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 23:44:25,959 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-24 23:44:25,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:44:25,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1376712487, now seen corresponding path program 1 times [2024-10-24 23:44:25,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:44:25,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335288056] [2024-10-24 23:44:25,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:25,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:44:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:26,106 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:44:26,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:44:26,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335288056] [2024-10-24 23:44:26,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335288056] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:44:26,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759664968] [2024-10-24 23:44:26,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:26,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:44:26,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:44:26,109 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) [2024-10-24 23:44:26,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 23:44:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:26,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 23:44:26,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:44:26,213 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:44:26,213 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:44:26,367 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:44:26,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759664968] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:44:26,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:44:26,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-10-24 23:44:26,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605911465] [2024-10-24 23:44:26,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:44:26,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-24 23:44:26,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:44:26,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-24 23:44:26,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-10-24 23:44:26,407 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-10-24 23:44:26,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 90 transitions, 404 flow. Second operand has 28 states, 28 states have (on average 21.071428571428573) internal successors, (590), 28 states have internal predecessors, (590), 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) [2024-10-24 23:44:26,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:44:26,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-10-24 23:44:26,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:44:27,965 INFO L124 PetriNetUnfolderBase]: 15770/22461 cut-off events. [2024-10-24 23:44:27,965 INFO L125 PetriNetUnfolderBase]: For 6465/7147 co-relation queries the response was YES. [2024-10-24 23:44:28,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52591 conditions, 22461 events. 15770/22461 cut-off events. For 6465/7147 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 133449 event pairs, 12494 based on Foata normal form. 672/19236 useless extension candidates. Maximal degree in co-relation 52569. Up to 20684 conditions per place. [2024-10-24 23:44:28,128 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 45 selfloop transitions, 73 changer transitions 0/132 dead transitions. [2024-10-24 23:44:28,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 132 transitions, 941 flow [2024-10-24 23:44:28,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-24 23:44:28,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-24 23:44:28,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 641 transitions. [2024-10-24 23:44:28,131 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32017982017982016 [2024-10-24 23:44:28,131 INFO L175 Difference]: Start difference. First operand has 104 places, 90 transitions, 404 flow. Second operand 26 states and 641 transitions. [2024-10-24 23:44:28,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 132 transitions, 941 flow [2024-10-24 23:44:28,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 132 transitions, 903 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-10-24 23:44:28,138 INFO L231 Difference]: Finished difference. Result has 132 places, 132 transitions, 865 flow [2024-10-24 23:44:28,139 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=865, PETRI_PLACES=132, PETRI_TRANSITIONS=132} [2024-10-24 23:44:28,139 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 54 predicate places. [2024-10-24 23:44:28,140 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 132 transitions, 865 flow [2024-10-24 23:44:28,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 21.071428571428573) internal successors, (590), 28 states have internal predecessors, (590), 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) [2024-10-24 23:44:28,140 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:44:28,140 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:44:28,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-24 23:44:28,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-24 23:44:28,341 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-24 23:44:28,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:44:28,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1800214811, now seen corresponding path program 1 times [2024-10-24 23:44:28,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:44:28,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664576428] [2024-10-24 23:44:28,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:28,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:44:28,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:28,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:44:28,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:44:28,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664576428] [2024-10-24 23:44:28,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664576428] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:44:28,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229926747] [2024-10-24 23:44:28,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:28,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:44:28,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:44:28,686 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) [2024-10-24 23:44:28,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 23:44:28,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:28,763 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-24 23:44:28,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:44:28,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:44:28,989 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:44:29,100 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-24 23:44:29,100 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 26 treesize of output 13 [2024-10-24 23:44:29,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:44:29,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229926747] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:44:29,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:44:29,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2024-10-24 23:44:29,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312492403] [2024-10-24 23:44:29,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:44:29,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-24 23:44:29,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:44:29,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-24 23:44:29,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2024-10-24 23:44:29,352 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-10-24 23:44:29,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 132 transitions, 865 flow. Second operand has 20 states, 20 states have (on average 22.25) internal successors, (445), 20 states have internal predecessors, (445), 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) [2024-10-24 23:44:29,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:44:29,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-10-24 23:44:29,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:44:36,211 INFO L124 PetriNetUnfolderBase]: 60138/86733 cut-off events. [2024-10-24 23:44:36,211 INFO L125 PetriNetUnfolderBase]: For 18725/20998 co-relation queries the response was YES. [2024-10-24 23:44:36,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195711 conditions, 86733 events. 60138/86733 cut-off events. For 18725/20998 co-relation queries the response was YES. Maximal size of possible extension queue 2711. Compared 627349 event pairs, 4194 based on Foata normal form. 2273/74761 useless extension candidates. Maximal degree in co-relation 195682. Up to 11554 conditions per place. [2024-10-24 23:44:37,131 INFO L140 encePairwiseOnDemand]: 64/77 looper letters, 452 selfloop transitions, 28 changer transitions 48/542 dead transitions. [2024-10-24 23:44:37,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 542 transitions, 3651 flow [2024-10-24 23:44:37,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-24 23:44:37,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-24 23:44:37,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 854 transitions. [2024-10-24 23:44:37,136 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48221343873517786 [2024-10-24 23:44:37,136 INFO L175 Difference]: Start difference. First operand has 132 places, 132 transitions, 865 flow. Second operand 23 states and 854 transitions. [2024-10-24 23:44:37,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 542 transitions, 3651 flow [2024-10-24 23:44:37,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 542 transitions, 3190 flow, removed 162 selfloop flow, removed 12 redundant places. [2024-10-24 23:44:37,221 INFO L231 Difference]: Finished difference. Result has 153 places, 151 transitions, 877 flow [2024-10-24 23:44:37,222 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=877, PETRI_PLACES=153, PETRI_TRANSITIONS=151} [2024-10-24 23:44:37,226 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 75 predicate places. [2024-10-24 23:44:37,226 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 151 transitions, 877 flow [2024-10-24 23:44:37,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 22.25) internal successors, (445), 20 states have internal predecessors, (445), 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) [2024-10-24 23:44:37,227 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:44:37,227 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:44:37,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-24 23:44:37,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-24 23:44:37,428 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-24 23:44:37,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:44:37,430 INFO L85 PathProgramCache]: Analyzing trace with hash 690109906, now seen corresponding path program 1 times [2024-10-24 23:44:37,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:44:37,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857824809] [2024-10-24 23:44:37,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:37,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:44:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:37,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:44:37,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:44:37,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857824809] [2024-10-24 23:44:37,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857824809] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:44:37,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917860040] [2024-10-24 23:44:37,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:37,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:44:37,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:44:37,621 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) [2024-10-24 23:44:37,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 23:44:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:37,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:44:37,693 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:44:37,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:44:37,721 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:44:37,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917860040] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:44:37,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:44:37,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-10-24 23:44:37,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119927931] [2024-10-24 23:44:37,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:44:37,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 23:44:37,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:44:37,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:44:37,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-24 23:44:37,722 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 77 [2024-10-24 23:44:37,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 151 transitions, 877 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2024-10-24 23:44:37,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:44:37,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 77 [2024-10-24 23:44:37,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:44:44,395 INFO L124 PetriNetUnfolderBase]: 46947/68607 cut-off events. [2024-10-24 23:44:44,395 INFO L125 PetriNetUnfolderBase]: For 55649/57508 co-relation queries the response was YES. [2024-10-24 23:44:45,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168445 conditions, 68607 events. 46947/68607 cut-off events. For 55649/57508 co-relation queries the response was YES. Maximal size of possible extension queue 2023. Compared 494944 event pairs, 37588 based on Foata normal form. 3492/63129 useless extension candidates. Maximal degree in co-relation 168406. Up to 61494 conditions per place. [2024-10-24 23:44:45,242 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 132 selfloop transitions, 1 changer transitions 0/148 dead transitions. [2024-10-24 23:44:45,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 148 transitions, 1129 flow [2024-10-24 23:44:45,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:44:45,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 23:44:45,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-10-24 23:44:45,243 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4935064935064935 [2024-10-24 23:44:45,243 INFO L175 Difference]: Start difference. First operand has 153 places, 151 transitions, 877 flow. Second operand 3 states and 114 transitions. [2024-10-24 23:44:45,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 148 transitions, 1129 flow [2024-10-24 23:44:45,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 148 transitions, 1099 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-10-24 23:44:45,541 INFO L231 Difference]: Finished difference. Result has 147 places, 148 transitions, 835 flow [2024-10-24 23:44:45,541 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=835, PETRI_PLACES=147, PETRI_TRANSITIONS=148} [2024-10-24 23:44:45,542 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 69 predicate places. [2024-10-24 23:44:45,542 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 148 transitions, 835 flow [2024-10-24 23:44:45,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2024-10-24 23:44:45,542 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:44:45,542 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:44:45,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-24 23:44:45,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:44:45,743 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-10-24 23:44:45,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:44:45,743 INFO L85 PathProgramCache]: Analyzing trace with hash 27916681, now seen corresponding path program 1 times [2024-10-24 23:44:45,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:44:45,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019668444] [2024-10-24 23:44:45,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:45,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:44:45,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:46,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:44:46,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:44:46,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019668444] [2024-10-24 23:44:46,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019668444] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:44:46,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805270107] [2024-10-24 23:44:46,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:44:46,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:44:46,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:44:46,232 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) [2024-10-24 23:44:46,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 23:44:46,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:44:46,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-24 23:44:46,312 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:44:46,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:44:46,551 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:44:46,628 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 23:44:46,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2024-10-24 23:44:46,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:44:46,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805270107] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:44:46,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:44:46,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2024-10-24 23:44:46,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407642416] [2024-10-24 23:44:46,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:44:46,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-24 23:44:46,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:44:46,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-24 23:44:46,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2024-10-24 23:44:46,954 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-10-24 23:44:46,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 148 transitions, 835 flow. Second operand has 20 states, 20 states have (on average 22.4) internal successors, (448), 20 states have internal predecessors, (448), 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) [2024-10-24 23:44:46,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:44:46,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-10-24 23:44:46,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand