./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/parallel-min-max-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-min-max-1.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 0d8fc97f7c37032d6079f8a24b87bc520ff0a9c17c3894514011566166a643e8 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-15 00:00:32,511 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 00:00:32,571 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-15 00:00:32,578 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 00:00:32,578 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 00:00:32,604 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 00:00:32,605 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 00:00:32,607 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 00:00:32,608 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 00:00:32,608 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 00:00:32,609 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 00:00:32,609 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 00:00:32,610 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 00:00:32,610 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 00:00:32,611 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 00:00:32,611 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 00:00:32,612 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 00:00:32,612 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 00:00:32,613 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 00:00:32,613 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 00:00:32,614 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 00:00:32,615 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 00:00:32,615 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 00:00:32,616 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 00:00:32,619 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 00:00:32,620 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-15 00:00:32,620 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-15 00:00:32,620 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 00:00:32,620 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 00:00:32,621 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 00:00:32,621 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 00:00:32,621 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 00:00:32,621 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 00:00:32,622 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 00:00:32,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:00:32,622 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 00:00:32,622 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 00:00:32,623 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 00:00:32,623 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 00:00:32,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 00:00:32,627 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 00:00:32,627 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 00:00:32,627 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 00:00:32,628 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 00:00:32,628 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d8fc97f7c37032d6079f8a24b87bc520ff0a9c17c3894514011566166a643e8 [2024-10-15 00:00:32,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 00:00:32,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 00:00:32,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 00:00:32,990 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 00:00:32,990 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 00:00:32,992 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2024-10-15 00:00:34,425 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 00:00:34,638 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 00:00:34,638 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2024-10-15 00:00:34,645 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68fb73046/74bc1d1168a7410e9ca86057923b0c69/FLAGe02865f77 [2024-10-15 00:00:34,657 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68fb73046/74bc1d1168a7410e9ca86057923b0c69 [2024-10-15 00:00:34,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 00:00:34,660 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 00:00:34,662 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 00:00:34,662 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 00:00:34,666 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 00:00:34,667 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:00:34" (1/1) ... [2024-10-15 00:00:34,668 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22ca8c77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:34, skipping insertion in model container [2024-10-15 00:00:34,668 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:00:34" (1/1) ... [2024-10-15 00:00:34,691 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 00:00:34,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:00:34,927 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 00:00:34,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:00:34,986 INFO L204 MainTranslator]: Completed translation [2024-10-15 00:00:34,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:34 WrapperNode [2024-10-15 00:00:34,987 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 00:00:34,989 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 00:00:34,989 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 00:00:34,989 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 00:00:34,996 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:34" (1/1) ... [2024-10-15 00:00:35,008 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:34" (1/1) ... [2024-10-15 00:00:35,036 INFO L138 Inliner]: procedures = 24, calls = 39, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 118 [2024-10-15 00:00:35,041 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 00:00:35,041 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 00:00:35,042 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 00:00:35,042 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 00:00:35,053 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:34" (1/1) ... [2024-10-15 00:00:35,053 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:34" (1/1) ... [2024-10-15 00:00:35,056 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:34" (1/1) ... [2024-10-15 00:00:35,082 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-15 00:00:35,083 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:34" (1/1) ... [2024-10-15 00:00:35,084 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:34" (1/1) ... [2024-10-15 00:00:35,090 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:34" (1/1) ... [2024-10-15 00:00:35,098 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:34" (1/1) ... [2024-10-15 00:00:35,100 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:34" (1/1) ... [2024-10-15 00:00:35,102 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:34" (1/1) ... [2024-10-15 00:00:35,105 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 00:00:35,106 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 00:00:35,106 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 00:00:35,106 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 00:00:35,107 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:34" (1/1) ... [2024-10-15 00:00:35,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:00:35,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:00:35,141 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-15 00:00:35,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-15 00:00:35,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 00:00:35,191 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-15 00:00:35,191 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-15 00:00:35,191 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-15 00:00:35,191 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-15 00:00:35,191 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-15 00:00:35,192 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-15 00:00:35,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 00:00:35,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-15 00:00:35,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-15 00:00:35,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-15 00:00:35,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-15 00:00:35,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-15 00:00:35,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-15 00:00:35,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 00:00:35,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 00:00:35,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-15 00:00:35,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-15 00:00:35,196 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-15 00:00:35,386 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 00:00:35,389 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 00:00:35,784 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-15 00:00:35,784 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 00:00:36,027 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 00:00:36,028 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-15 00:00:36,028 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:00:36 BoogieIcfgContainer [2024-10-15 00:00:36,028 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 00:00:36,034 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 00:00:36,035 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 00:00:36,041 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 00:00:36,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:00:34" (1/3) ... [2024-10-15 00:00:36,042 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169c61bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:00:36, skipping insertion in model container [2024-10-15 00:00:36,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:34" (2/3) ... [2024-10-15 00:00:36,043 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169c61bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:00:36, skipping insertion in model container [2024-10-15 00:00:36,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:00:36" (3/3) ... [2024-10-15 00:00:36,044 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2024-10-15 00:00:36,064 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 00:00:36,065 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-10-15 00:00:36,065 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-15 00:00:36,130 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-15 00:00:36,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 47 transitions, 115 flow [2024-10-15 00:00:36,212 INFO L124 PetriNetUnfolderBase]: 3/44 cut-off events. [2024-10-15 00:00:36,212 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-15 00:00:36,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 44 events. 3/44 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 88 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-10-15 00:00:36,216 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 47 transitions, 115 flow [2024-10-15 00:00:36,219 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 41 transitions, 94 flow [2024-10-15 00:00:36,228 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 00:00:36,235 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;@6e83803f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 00:00:36,236 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-10-15 00:00:36,240 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-15 00:00:36,240 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-15 00:00:36,241 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-15 00:00:36,241 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:36,242 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-15 00:00:36,243 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-15 00:00:36,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:36,250 INFO L85 PathProgramCache]: Analyzing trace with hash 511311, now seen corresponding path program 1 times [2024-10-15 00:00:36,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:36,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815615997] [2024-10-15 00:00:36,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:36,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:36,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:36,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:36,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:36,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815615997] [2024-10-15 00:00:36,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815615997] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:00:36,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:00:36,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:00:36,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292227833] [2024-10-15 00:00:36,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:00:36,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:00:36,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:36,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:00:36,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:00:36,689 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 47 [2024-10-15 00:00:36,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:36,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:36,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 47 [2024-10-15 00:00:36,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:36,921 INFO L124 PetriNetUnfolderBase]: 374/651 cut-off events. [2024-10-15 00:00:36,921 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-15 00:00:36,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1273 conditions, 651 events. 374/651 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3349 event pairs, 252 based on Foata normal form. 1/565 useless extension candidates. Maximal degree in co-relation 1180. Up to 544 conditions per place. [2024-10-15 00:00:36,934 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 21 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2024-10-15 00:00:36,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 150 flow [2024-10-15 00:00:36,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:00:36,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:00:36,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-10-15 00:00:36,948 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6117021276595744 [2024-10-15 00:00:36,949 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 94 flow. Second operand 4 states and 115 transitions. [2024-10-15 00:00:36,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 150 flow [2024-10-15 00:00:36,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 44 transitions, 144 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-15 00:00:36,961 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 117 flow [2024-10-15 00:00:36,964 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=117, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2024-10-15 00:00:36,968 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 1 predicate places. [2024-10-15 00:00:36,969 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 117 flow [2024-10-15 00:00:36,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:36,969 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:36,971 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-15 00:00:36,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 00:00:36,972 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-15 00:00:36,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:36,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1946912053, now seen corresponding path program 1 times [2024-10-15 00:00:36,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:36,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761246791] [2024-10-15 00:00:36,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:36,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:37,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:37,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:37,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:37,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761246791] [2024-10-15 00:00:37,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761246791] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:00:37,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351673067] [2024-10-15 00:00:37,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:37,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:37,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:00:37,179 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:00:37,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 00:00:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:37,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:00:37,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:00:37,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:37,335 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:00:37,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351673067] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:00:37,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:00:37,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-15 00:00:37,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213081532] [2024-10-15 00:00:37,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:00:37,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-15 00:00:37,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:37,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-15 00:00:37,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-15 00:00:37,349 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 47 [2024-10-15 00:00:37,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 117 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:37,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:37,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 47 [2024-10-15 00:00:37,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:37,531 INFO L124 PetriNetUnfolderBase]: 374/650 cut-off events. [2024-10-15 00:00:37,531 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-15 00:00:37,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1271 conditions, 650 events. 374/650 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3333 event pairs, 252 based on Foata normal form. 1/565 useless extension candidates. Maximal degree in co-relation 1244. Up to 539 conditions per place. [2024-10-15 00:00:37,539 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 17 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2024-10-15 00:00:37,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 43 transitions, 161 flow [2024-10-15 00:00:37,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-15 00:00:37,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-15 00:00:37,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-10-15 00:00:37,542 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5567375886524822 [2024-10-15 00:00:37,542 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 117 flow. Second operand 6 states and 157 transitions. [2024-10-15 00:00:37,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 43 transitions, 161 flow [2024-10-15 00:00:37,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 43 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:00:37,563 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 124 flow [2024-10-15 00:00:37,563 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=124, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2024-10-15 00:00:37,564 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 4 predicate places. [2024-10-15 00:00:37,564 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 124 flow [2024-10-15 00:00:37,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:37,565 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:37,565 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-15 00:00:37,584 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-15 00:00:37,769 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 [2024-10-15 00:00:37,770 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-15 00:00:37,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:37,771 INFO L85 PathProgramCache]: Analyzing trace with hash -224731004, now seen corresponding path program 1 times [2024-10-15 00:00:37,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:37,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452816040] [2024-10-15 00:00:37,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:37,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:37,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:37,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:37,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:37,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452816040] [2024-10-15 00:00:37,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452816040] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:00:37,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382520972] [2024-10-15 00:00:37,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:37,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:37,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:00:37,896 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:00:37,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 00:00:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:37,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:00:37,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:00:38,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:38,024 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:00:38,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:38,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382520972] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:00:38,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:00:38,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-15 00:00:38,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422059818] [2024-10-15 00:00:38,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:00:38,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-15 00:00:38,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:38,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-15 00:00:38,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-15 00:00:38,100 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 47 [2024-10-15 00:00:38,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 124 flow. Second operand has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:38,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:38,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 47 [2024-10-15 00:00:38,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:38,290 INFO L124 PetriNetUnfolderBase]: 377/662 cut-off events. [2024-10-15 00:00:38,290 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-15 00:00:38,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1315 conditions, 662 events. 377/662 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3437 event pairs, 252 based on Foata normal form. 3/577 useless extension candidates. Maximal degree in co-relation 1245. Up to 546 conditions per place. [2024-10-15 00:00:38,297 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 20 selfloop transitions, 13 changer transitions 0/52 dead transitions. [2024-10-15 00:00:38,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 52 transitions, 244 flow [2024-10-15 00:00:38,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:00:38,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-15 00:00:38,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 256 transitions. [2024-10-15 00:00:38,302 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5446808510638298 [2024-10-15 00:00:38,302 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 124 flow. Second operand 10 states and 256 transitions. [2024-10-15 00:00:38,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 52 transitions, 244 flow [2024-10-15 00:00:38,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 52 transitions, 198 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-10-15 00:00:38,305 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 176 flow [2024-10-15 00:00:38,305 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=176, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2024-10-15 00:00:38,306 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 11 predicate places. [2024-10-15 00:00:38,306 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 176 flow [2024-10-15 00:00:38,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:38,307 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:38,307 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:38,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-15 00:00:38,507 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 [2024-10-15 00:00:38,508 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-15 00:00:38,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:38,509 INFO L85 PathProgramCache]: Analyzing trace with hash -960727794, now seen corresponding path program 1 times [2024-10-15 00:00:38,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:38,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172243494] [2024-10-15 00:00:38,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:38,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:38,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:38,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:38,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172243494] [2024-10-15 00:00:38,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172243494] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:00:38,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:00:38,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:00:38,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006901058] [2024-10-15 00:00:38,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:00:38,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:00:38,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:38,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:00:38,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:00:38,614 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 47 [2024-10-15 00:00:38,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:38,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:38,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 47 [2024-10-15 00:00:38,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:38,881 INFO L124 PetriNetUnfolderBase]: 788/1357 cut-off events. [2024-10-15 00:00:38,881 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-10-15 00:00:38,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2686 conditions, 1357 events. 788/1357 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 7516 event pairs, 421 based on Foata normal form. 32/1264 useless extension candidates. Maximal degree in co-relation 2652. Up to 858 conditions per place. [2024-10-15 00:00:38,892 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 56 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2024-10-15 00:00:38,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 76 transitions, 352 flow [2024-10-15 00:00:38,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:00:38,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:00:38,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2024-10-15 00:00:38,895 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6914893617021277 [2024-10-15 00:00:38,895 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 176 flow. Second operand 4 states and 130 transitions. [2024-10-15 00:00:38,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 76 transitions, 352 flow [2024-10-15 00:00:38,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 76 transitions, 341 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-15 00:00:38,899 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 194 flow [2024-10-15 00:00:38,900 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2024-10-15 00:00:38,901 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 14 predicate places. [2024-10-15 00:00:38,902 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 194 flow [2024-10-15 00:00:38,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:38,902 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:38,902 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:38,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-15 00:00:38,903 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-15 00:00:38,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:38,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1620140299, now seen corresponding path program 1 times [2024-10-15 00:00:38,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:38,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349524487] [2024-10-15 00:00:38,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:38,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:38,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:38,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:38,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:38,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349524487] [2024-10-15 00:00:38,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349524487] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:00:38,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:00:38,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:00:38,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080219070] [2024-10-15 00:00:38,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:00:38,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:00:38,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:38,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:00:38,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:00:38,974 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 47 [2024-10-15 00:00:38,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:38,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:38,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 47 [2024-10-15 00:00:38,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:39,207 INFO L124 PetriNetUnfolderBase]: 949/1599 cut-off events. [2024-10-15 00:00:39,207 INFO L125 PetriNetUnfolderBase]: For 304/563 co-relation queries the response was YES. [2024-10-15 00:00:39,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3586 conditions, 1599 events. 949/1599 cut-off events. For 304/563 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 9091 event pairs, 525 based on Foata normal form. 168/1664 useless extension candidates. Maximal degree in co-relation 3550. Up to 1034 conditions per place. [2024-10-15 00:00:39,223 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 60 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2024-10-15 00:00:39,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 81 transitions, 400 flow [2024-10-15 00:00:39,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:00:39,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:00:39,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2024-10-15 00:00:39,225 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6808510638297872 [2024-10-15 00:00:39,225 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 194 flow. Second operand 4 states and 128 transitions. [2024-10-15 00:00:39,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 81 transitions, 400 flow [2024-10-15 00:00:39,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 81 transitions, 393 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:00:39,228 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 220 flow [2024-10-15 00:00:39,228 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2024-10-15 00:00:39,229 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 18 predicate places. [2024-10-15 00:00:39,229 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 220 flow [2024-10-15 00:00:39,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:39,230 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:39,230 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-15 00:00:39,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-15 00:00:39,230 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-15 00:00:39,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:39,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1689510272, now seen corresponding path program 2 times [2024-10-15 00:00:39,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:39,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489950655] [2024-10-15 00:00:39,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:39,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:39,439 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:39,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:39,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489950655] [2024-10-15 00:00:39,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489950655] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:00:39,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012409885] [2024-10-15 00:00:39,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:00:39,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:39,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:00:39,444 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:00:39,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 00:00:39,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-15 00:00:39,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:00:39,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-15 00:00:39,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:00:39,601 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-15 00:00:39,601 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:00:39,646 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-15 00:00:39,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012409885] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:00:39,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:00:39,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-15 00:00:39,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908281892] [2024-10-15 00:00:39,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:00:39,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-15 00:00:39,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:39,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-15 00:00:39,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-15 00:00:39,669 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 47 [2024-10-15 00:00:39,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 220 flow. Second operand has 14 states, 14 states have (on average 23.142857142857142) internal successors, (324), 14 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:39,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:39,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 47 [2024-10-15 00:00:39,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:39,975 INFO L124 PetriNetUnfolderBase]: 545/953 cut-off events. [2024-10-15 00:00:39,975 INFO L125 PetriNetUnfolderBase]: For 331/544 co-relation queries the response was YES. [2024-10-15 00:00:39,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2299 conditions, 953 events. 545/953 cut-off events. For 331/544 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5246 event pairs, 387 based on Foata normal form. 112/951 useless extension candidates. Maximal degree in co-relation 2254. Up to 786 conditions per place. [2024-10-15 00:00:39,983 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 20 selfloop transitions, 19 changer transitions 0/60 dead transitions. [2024-10-15 00:00:39,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 60 transitions, 304 flow [2024-10-15 00:00:39,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-15 00:00:39,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-15 00:00:39,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 345 transitions. [2024-10-15 00:00:39,985 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5243161094224924 [2024-10-15 00:00:39,985 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 220 flow. Second operand 14 states and 345 transitions. [2024-10-15 00:00:39,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 60 transitions, 304 flow [2024-10-15 00:00:39,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 60 transitions, 289 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-10-15 00:00:39,988 INFO L231 Difference]: Finished difference. Result has 73 places, 60 transitions, 249 flow [2024-10-15 00:00:39,988 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=249, PETRI_PLACES=73, PETRI_TRANSITIONS=60} [2024-10-15 00:00:39,989 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 25 predicate places. [2024-10-15 00:00:39,989 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 60 transitions, 249 flow [2024-10-15 00:00:39,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 23.142857142857142) internal successors, (324), 14 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:39,990 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:39,990 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:40,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-15 00:00:40,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:40,194 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-15 00:00:40,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:40,194 INFO L85 PathProgramCache]: Analyzing trace with hash -339026072, now seen corresponding path program 1 times [2024-10-15 00:00:40,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:40,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261375570] [2024-10-15 00:00:40,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:40,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:40,298 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-15 00:00:40,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:40,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261375570] [2024-10-15 00:00:40,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261375570] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:00:40,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:00:40,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:00:40,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368046031] [2024-10-15 00:00:40,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:00:40,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:00:40,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:40,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:00:40,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:00:40,304 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 47 [2024-10-15 00:00:40,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 60 transitions, 249 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:40,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:40,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 47 [2024-10-15 00:00:40,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:40,445 INFO L124 PetriNetUnfolderBase]: 544/952 cut-off events. [2024-10-15 00:00:40,446 INFO L125 PetriNetUnfolderBase]: For 316/529 co-relation queries the response was YES. [2024-10-15 00:00:40,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2228 conditions, 952 events. 544/952 cut-off events. For 316/529 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5179 event pairs, 387 based on Foata normal form. 110/945 useless extension candidates. Maximal degree in co-relation 2138. Up to 796 conditions per place. [2024-10-15 00:00:40,453 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 36 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2024-10-15 00:00:40,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 59 transitions, 320 flow [2024-10-15 00:00:40,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:00:40,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:00:40,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-10-15 00:00:40,455 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6737588652482269 [2024-10-15 00:00:40,455 INFO L175 Difference]: Start difference. First operand has 73 places, 60 transitions, 249 flow. Second operand 3 states and 95 transitions. [2024-10-15 00:00:40,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 59 transitions, 320 flow [2024-10-15 00:00:40,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 59 transitions, 252 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-10-15 00:00:40,458 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 180 flow [2024-10-15 00:00:40,458 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2024-10-15 00:00:40,459 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 15 predicate places. [2024-10-15 00:00:40,459 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 180 flow [2024-10-15 00:00:40,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:40,459 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:40,459 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:40,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-15 00:00:40,460 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-15 00:00:40,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:40,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1745681260, now seen corresponding path program 1 times [2024-10-15 00:00:40,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:40,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963095578] [2024-10-15 00:00:40,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:40,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:40,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:40,542 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:00:40,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:40,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963095578] [2024-10-15 00:00:40,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963095578] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:00:40,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028926055] [2024-10-15 00:00:40,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:40,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:40,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:00:40,545 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:00:40,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-15 00:00:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:40,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-15 00:00:40,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:00:40,779 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:40,780 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:00:40,935 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:40,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028926055] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:00:40,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:00:40,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-10-15 00:00:40,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309276763] [2024-10-15 00:00:40,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:00:40,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-15 00:00:40,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:40,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-15 00:00:40,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-10-15 00:00:41,057 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-15 00:00:41,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 180 flow. Second operand has 19 states, 19 states have (on average 19.105263157894736) internal successors, (363), 19 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:41,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:41,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-15 00:00:41,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:41,773 INFO L124 PetriNetUnfolderBase]: 1684/2744 cut-off events. [2024-10-15 00:00:41,773 INFO L125 PetriNetUnfolderBase]: For 753/1162 co-relation queries the response was YES. [2024-10-15 00:00:41,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6625 conditions, 2744 events. 1684/2744 cut-off events. For 753/1162 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 16405 event pairs, 366 based on Foata normal form. 287/2890 useless extension candidates. Maximal degree in co-relation 6608. Up to 426 conditions per place. [2024-10-15 00:00:41,794 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 118 selfloop transitions, 25 changer transitions 8/166 dead transitions. [2024-10-15 00:00:41,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 166 transitions, 804 flow [2024-10-15 00:00:41,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-15 00:00:41,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-15 00:00:41,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 364 transitions. [2024-10-15 00:00:41,796 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-10-15 00:00:41,796 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 180 flow. Second operand 14 states and 364 transitions. [2024-10-15 00:00:41,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 166 transitions, 804 flow [2024-10-15 00:00:41,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 166 transitions, 800 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-15 00:00:41,802 INFO L231 Difference]: Finished difference. Result has 74 places, 63 transitions, 248 flow [2024-10-15 00:00:41,802 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=248, PETRI_PLACES=74, PETRI_TRANSITIONS=63} [2024-10-15 00:00:41,803 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 26 predicate places. [2024-10-15 00:00:41,803 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 63 transitions, 248 flow [2024-10-15 00:00:41,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 19.105263157894736) internal successors, (363), 19 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:41,804 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:41,804 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:41,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-15 00:00:42,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:42,005 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-15 00:00:42,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:42,006 INFO L85 PathProgramCache]: Analyzing trace with hash 2112147867, now seen corresponding path program 1 times [2024-10-15 00:00:42,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:42,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016281188] [2024-10-15 00:00:42,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:42,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:42,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:42,077 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:00:42,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:42,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016281188] [2024-10-15 00:00:42,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016281188] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:00:42,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121477889] [2024-10-15 00:00:42,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:42,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:42,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:00:42,080 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:00:42,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-15 00:00:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:42,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-15 00:00:42,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:00:42,280 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:42,281 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:00:42,416 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:42,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121477889] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:00:42,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:00:42,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-10-15 00:00:42,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223322119] [2024-10-15 00:00:42,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:00:42,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-15 00:00:42,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:42,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-15 00:00:42,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-10-15 00:00:42,580 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-15 00:00:42,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 63 transitions, 248 flow. Second operand has 19 states, 19 states have (on average 19.31578947368421) internal successors, (367), 19 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:42,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:42,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-15 00:00:42,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:43,282 INFO L124 PetriNetUnfolderBase]: 1703/2840 cut-off events. [2024-10-15 00:00:43,282 INFO L125 PetriNetUnfolderBase]: For 1888/1960 co-relation queries the response was YES. [2024-10-15 00:00:43,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7362 conditions, 2840 events. 1703/2840 cut-off events. For 1888/1960 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 17674 event pairs, 399 based on Foata normal form. 78/2797 useless extension candidates. Maximal degree in co-relation 4087. Up to 454 conditions per place. [2024-10-15 00:00:43,302 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 77 selfloop transitions, 19 changer transitions 50/160 dead transitions. [2024-10-15 00:00:43,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 160 transitions, 889 flow [2024-10-15 00:00:43,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-15 00:00:43,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-15 00:00:43,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 357 transitions. [2024-10-15 00:00:43,304 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-10-15 00:00:43,304 INFO L175 Difference]: Start difference. First operand has 74 places, 63 transitions, 248 flow. Second operand 14 states and 357 transitions. [2024-10-15 00:00:43,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 160 transitions, 889 flow [2024-10-15 00:00:43,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 160 transitions, 812 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-10-15 00:00:43,311 INFO L231 Difference]: Finished difference. Result has 80 places, 56 transitions, 220 flow [2024-10-15 00:00:43,312 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=220, PETRI_PLACES=80, PETRI_TRANSITIONS=56} [2024-10-15 00:00:43,312 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 32 predicate places. [2024-10-15 00:00:43,312 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 56 transitions, 220 flow [2024-10-15 00:00:43,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 19.31578947368421) internal successors, (367), 19 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:43,313 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:43,313 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:43,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-15 00:00:43,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:43,514 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-15 00:00:43,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:43,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1348538838, now seen corresponding path program 1 times [2024-10-15 00:00:43,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:43,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322874936] [2024-10-15 00:00:43,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:43,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:43,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:43,620 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:00:43,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:43,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322874936] [2024-10-15 00:00:43,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322874936] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:00:43,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286930207] [2024-10-15 00:00:43,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:43,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:43,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:00:43,623 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:00:43,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-15 00:00:43,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:43,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:00:43,714 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:00:43,745 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:00:43,745 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:00:43,791 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:00:43,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286930207] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:00:43,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:00:43,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-15 00:00:43,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249654340] [2024-10-15 00:00:43,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:00:43,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-15 00:00:43,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:43,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-15 00:00:43,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-15 00:00:43,816 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 47 [2024-10-15 00:00:43,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 56 transitions, 220 flow. Second operand has 12 states, 12 states have (on average 22.0) internal successors, (264), 12 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:43,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:43,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 47 [2024-10-15 00:00:43,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:44,409 INFO L124 PetriNetUnfolderBase]: 1899/3357 cut-off events. [2024-10-15 00:00:44,409 INFO L125 PetriNetUnfolderBase]: For 2475/2569 co-relation queries the response was YES. [2024-10-15 00:00:44,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8727 conditions, 3357 events. 1899/3357 cut-off events. For 2475/2569 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 20679 event pairs, 635 based on Foata normal form. 132/3363 useless extension candidates. Maximal degree in co-relation 5669. Up to 1261 conditions per place. [2024-10-15 00:00:44,433 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 137 selfloop transitions, 13 changer transitions 0/165 dead transitions. [2024-10-15 00:00:44,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 165 transitions, 922 flow [2024-10-15 00:00:44,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:00:44,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-15 00:00:44,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 322 transitions. [2024-10-15 00:00:44,436 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6851063829787234 [2024-10-15 00:00:44,436 INFO L175 Difference]: Start difference. First operand has 80 places, 56 transitions, 220 flow. Second operand 10 states and 322 transitions. [2024-10-15 00:00:44,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 165 transitions, 922 flow [2024-10-15 00:00:44,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 165 transitions, 817 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-10-15 00:00:44,441 INFO L231 Difference]: Finished difference. Result has 75 places, 65 transitions, 249 flow [2024-10-15 00:00:44,441 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=249, PETRI_PLACES=75, PETRI_TRANSITIONS=65} [2024-10-15 00:00:44,442 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 27 predicate places. [2024-10-15 00:00:44,442 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 65 transitions, 249 flow [2024-10-15 00:00:44,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.0) internal successors, (264), 12 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:44,443 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:44,443 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:44,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-15 00:00:44,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:44,644 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-15 00:00:44,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:44,644 INFO L85 PathProgramCache]: Analyzing trace with hash 59469031, now seen corresponding path program 1 times [2024-10-15 00:00:44,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:44,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492701282] [2024-10-15 00:00:44,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:44,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:44,729 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:00:44,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:44,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492701282] [2024-10-15 00:00:44,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492701282] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:00:44,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609713646] [2024-10-15 00:00:44,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:44,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:44,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:00:44,733 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:00:44,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-15 00:00:44,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:44,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:00:44,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:00:44,864 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:00:44,864 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:00:44,908 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:00:44,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609713646] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:00:44,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:00:44,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-15 00:00:44,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508085079] [2024-10-15 00:00:44,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:00:44,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-15 00:00:44,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:44,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-15 00:00:44,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-15 00:00:44,948 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 47 [2024-10-15 00:00:44,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 65 transitions, 249 flow. Second operand has 12 states, 12 states have (on average 22.166666666666668) internal successors, (266), 12 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:44,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:44,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 47 [2024-10-15 00:00:44,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:45,798 INFO L124 PetriNetUnfolderBase]: 3883/6505 cut-off events. [2024-10-15 00:00:45,798 INFO L125 PetriNetUnfolderBase]: For 6919/7156 co-relation queries the response was YES. [2024-10-15 00:00:45,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17048 conditions, 6505 events. 3883/6505 cut-off events. For 6919/7156 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 41701 event pairs, 1191 based on Foata normal form. 246/6602 useless extension candidates. Maximal degree in co-relation 13596. Up to 2419 conditions per place. [2024-10-15 00:00:45,834 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 183 selfloop transitions, 13 changer transitions 0/214 dead transitions. [2024-10-15 00:00:45,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 214 transitions, 1368 flow [2024-10-15 00:00:45,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:00:45,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-15 00:00:45,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 314 transitions. [2024-10-15 00:00:45,836 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6680851063829787 [2024-10-15 00:00:45,836 INFO L175 Difference]: Start difference. First operand has 75 places, 65 transitions, 249 flow. Second operand 10 states and 314 transitions. [2024-10-15 00:00:45,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 214 transitions, 1368 flow [2024-10-15 00:00:45,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 214 transitions, 1293 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-10-15 00:00:45,845 INFO L231 Difference]: Finished difference. Result has 85 places, 74 transitions, 321 flow [2024-10-15 00:00:45,845 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=321, PETRI_PLACES=85, PETRI_TRANSITIONS=74} [2024-10-15 00:00:45,846 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 37 predicate places. [2024-10-15 00:00:45,846 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 74 transitions, 321 flow [2024-10-15 00:00:45,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.166666666666668) internal successors, (266), 12 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:45,846 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:45,846 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:45,861 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-15 00:00:46,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:46,047 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-15 00:00:46,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:46,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1259605956, now seen corresponding path program 2 times [2024-10-15 00:00:46,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:46,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278166665] [2024-10-15 00:00:46,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:46,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:46,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:46,309 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-15 00:00:46,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:46,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278166665] [2024-10-15 00:00:46,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278166665] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:00:46,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129960516] [2024-10-15 00:00:46,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:00:46,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:46,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:00:46,311 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:00:46,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-15 00:00:46,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-15 00:00:46,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:00:46,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-15 00:00:46,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:00:46,467 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-15 00:00:46,467 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:00:46,529 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-15 00:00:46,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129960516] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:00:46,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:00:46,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 3] total 11 [2024-10-15 00:00:46,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340372231] [2024-10-15 00:00:46,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:00:46,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-15 00:00:46,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:46,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-15 00:00:46,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-10-15 00:00:46,600 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-15 00:00:46,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 74 transitions, 321 flow. Second operand has 13 states, 13 states have (on average 19.46153846153846) internal successors, (253), 13 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) [2024-10-15 00:00:46,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:46,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-15 00:00:46,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:48,053 INFO L124 PetriNetUnfolderBase]: 8972/13978 cut-off events. [2024-10-15 00:00:48,053 INFO L125 PetriNetUnfolderBase]: For 18917/19422 co-relation queries the response was YES. [2024-10-15 00:00:48,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40138 conditions, 13978 events. 8972/13978 cut-off events. For 18917/19422 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 94133 event pairs, 1473 based on Foata normal form. 160/13870 useless extension candidates. Maximal degree in co-relation 31862. Up to 2816 conditions per place. [2024-10-15 00:00:48,133 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 142 selfloop transitions, 38 changer transitions 45/242 dead transitions. [2024-10-15 00:00:48,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 242 transitions, 1581 flow [2024-10-15 00:00:48,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-15 00:00:48,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-15 00:00:48,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 402 transitions. [2024-10-15 00:00:48,135 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5345744680851063 [2024-10-15 00:00:48,135 INFO L175 Difference]: Start difference. First operand has 85 places, 74 transitions, 321 flow. Second operand 16 states and 402 transitions. [2024-10-15 00:00:48,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 242 transitions, 1581 flow [2024-10-15 00:00:48,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 242 transitions, 1486 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-10-15 00:00:48,174 INFO L231 Difference]: Finished difference. Result has 95 places, 86 transitions, 459 flow [2024-10-15 00:00:48,174 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=459, PETRI_PLACES=95, PETRI_TRANSITIONS=86} [2024-10-15 00:00:48,174 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 47 predicate places. [2024-10-15 00:00:48,175 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 86 transitions, 459 flow [2024-10-15 00:00:48,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 19.46153846153846) internal successors, (253), 13 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) [2024-10-15 00:00:48,175 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:48,175 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:48,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-15 00:00:48,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-15 00:00:48,376 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-15 00:00:48,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:48,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1668037389, now seen corresponding path program 2 times [2024-10-15 00:00:48,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:48,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159751556] [2024-10-15 00:00:48,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:48,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:48,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:48,602 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-15 00:00:48,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:48,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159751556] [2024-10-15 00:00:48,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159751556] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:00:48,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099989284] [2024-10-15 00:00:48,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:00:48,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:48,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:00:48,604 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:00:48,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-15 00:00:48,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-15 00:00:48,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:00:48,686 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-15 00:00:48,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:00:48,761 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-15 00:00:48,762 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:00:48,821 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-15 00:00:48,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099989284] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:00:48,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:00:48,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 3] total 11 [2024-10-15 00:00:48,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440817453] [2024-10-15 00:00:48,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:00:48,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-15 00:00:48,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:48,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-15 00:00:48,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-10-15 00:00:48,908 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-15 00:00:48,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 86 transitions, 459 flow. Second operand has 13 states, 13 states have (on average 19.76923076923077) internal successors, (257), 13 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:48,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:48,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-15 00:00:48,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:50,271 INFO L124 PetriNetUnfolderBase]: 7989/12693 cut-off events. [2024-10-15 00:00:50,272 INFO L125 PetriNetUnfolderBase]: For 27515/28305 co-relation queries the response was YES. [2024-10-15 00:00:50,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37235 conditions, 12693 events. 7989/12693 cut-off events. For 27515/28305 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 87115 event pairs, 978 based on Foata normal form. 560/13125 useless extension candidates. Maximal degree in co-relation 27748. Up to 2882 conditions per place. [2024-10-15 00:00:50,311 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 0 selfloop transitions, 0 changer transitions 232/232 dead transitions. [2024-10-15 00:00:50,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 232 transitions, 1660 flow [2024-10-15 00:00:50,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-15 00:00:50,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-15 00:00:50,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 390 transitions. [2024-10-15 00:00:50,313 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5186170212765957 [2024-10-15 00:00:50,313 INFO L175 Difference]: Start difference. First operand has 95 places, 86 transitions, 459 flow. Second operand 16 states and 390 transitions. [2024-10-15 00:00:50,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 232 transitions, 1660 flow [2024-10-15 00:00:50,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 232 transitions, 1628 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-10-15 00:00:50,369 INFO L231 Difference]: Finished difference. Result has 97 places, 0 transitions, 0 flow [2024-10-15 00:00:50,369 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=97, PETRI_TRANSITIONS=0} [2024-10-15 00:00:50,370 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 49 predicate places. [2024-10-15 00:00:50,370 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 0 transitions, 0 flow [2024-10-15 00:00:50,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 19.76923076923077) internal successors, (257), 13 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:50,375 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2024-10-15 00:00:50,375 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-10-15 00:00:50,376 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-10-15 00:00:50,376 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-10-15 00:00:50,376 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-10-15 00:00:50,376 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-10-15 00:00:50,376 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 13 remaining) [2024-10-15 00:00:50,376 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 13 remaining) [2024-10-15 00:00:50,376 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 13 remaining) [2024-10-15 00:00:50,376 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-10-15 00:00:50,377 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-10-15 00:00:50,377 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-10-15 00:00:50,377 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-10-15 00:00:50,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-15 00:00:50,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-15 00:00:50,579 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:50,585 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-15 00:00:50,585 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-15 00:00:50,591 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 12:00:50 BasicIcfg [2024-10-15 00:00:50,591 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-15 00:00:50,592 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-15 00:00:50,592 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-15 00:00:50,592 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-15 00:00:50,593 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:00:36" (3/4) ... [2024-10-15 00:00:50,595 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-15 00:00:50,597 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-10-15 00:00:50,598 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-10-15 00:00:50,598 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-10-15 00:00:50,607 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 120 nodes and edges [2024-10-15 00:00:50,608 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2024-10-15 00:00:50,608 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-10-15 00:00:50,608 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-15 00:00:50,717 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-15 00:00:50,718 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-15 00:00:50,718 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-15 00:00:50,719 INFO L158 Benchmark]: Toolchain (without parser) took 16058.47ms. Allocated memory was 165.7MB in the beginning and 973.1MB in the end (delta: 807.4MB). Free memory was 136.5MB in the beginning and 594.5MB in the end (delta: -458.0MB). Peak memory consumption was 349.1MB. Max. memory is 16.1GB. [2024-10-15 00:00:50,719 INFO L158 Benchmark]: CDTParser took 1.18ms. Allocated memory is still 165.7MB. Free memory is still 134.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 00:00:50,719 INFO L158 Benchmark]: CACSL2BoogieTranslator took 325.61ms. Allocated memory is still 165.7MB. Free memory was 136.5MB in the beginning and 123.7MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-15 00:00:50,720 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.05ms. Allocated memory is still 165.7MB. Free memory was 123.7MB in the beginning and 122.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 00:00:50,720 INFO L158 Benchmark]: Boogie Preprocessor took 63.69ms. Allocated memory is still 165.7MB. Free memory was 122.0MB in the beginning and 119.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 00:00:50,720 INFO L158 Benchmark]: RCFGBuilder took 922.43ms. Allocated memory is still 165.7MB. Free memory was 119.5MB in the beginning and 96.2MB in the end (delta: 23.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-10-15 00:00:50,722 INFO L158 Benchmark]: TraceAbstraction took 14556.95ms. Allocated memory was 165.7MB in the beginning and 973.1MB in the end (delta: 807.4MB). Free memory was 95.9MB in the beginning and 599.8MB in the end (delta: -503.9MB). Peak memory consumption was 348.6MB. Max. memory is 16.1GB. [2024-10-15 00:00:50,722 INFO L158 Benchmark]: Witness Printer took 126.41ms. Allocated memory is still 973.1MB. Free memory was 599.8MB in the beginning and 594.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-15 00:00:50,723 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.18ms. Allocated memory is still 165.7MB. Free memory is still 134.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 325.61ms. Allocated memory is still 165.7MB. Free memory was 136.5MB in the beginning and 123.7MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.05ms. Allocated memory is still 165.7MB. Free memory was 123.7MB in the beginning and 122.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.69ms. Allocated memory is still 165.7MB. Free memory was 122.0MB in the beginning and 119.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 922.43ms. Allocated memory is still 165.7MB. Free memory was 119.5MB in the beginning and 96.2MB in the end (delta: 23.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 14556.95ms. Allocated memory was 165.7MB in the beginning and 973.1MB in the end (delta: 807.4MB). Free memory was 95.9MB in the beginning and 599.8MB in the end (delta: -503.9MB). Peak memory consumption was 348.6MB. Max. memory is 16.1GB. * Witness Printer took 126.41ms. Allocated memory is still 973.1MB. Free memory was 599.8MB in the beginning and 594.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 125]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 125]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 76 locations, 13 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.4s, OverallIterations: 13, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1186 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1126 mSDsluCounter, 881 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 872 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4350 IncrementalHoareTripleChecker+Invalid, 4404 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 9 mSDtfsCounter, 4350 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 493 GetRequests, 313 SyntacticMatches, 7 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=459occurred in iteration=12, InterpolantAutomatonStates: 125, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 433 NumberOfCodeBlocks, 369 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 592 ConstructedInterpolants, 0 QuantifiedInterpolants, 1707 SizeOfPredicates, 29 NumberOfNonLiveVariables, 979 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 30 InterpolantComputations, 5 PerfectInterpolantSequences, 322/527 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-15 00:00:50,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE