./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_21-deref_read_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_21-deref_read_racing.i -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 cb010ae024b402436affeb854f96a5f9e0df3d8ec2cfe8b3a7f33676b7169a2c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 23:34:57,364 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 23:34:57,448 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-24 23:34:57,453 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 23:34:57,454 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 23:34:57,484 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 23:34:57,486 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 23:34:57,486 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 23:34:57,487 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 23:34:57,487 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 23:34:57,487 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 23:34:57,488 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 23:34:57,488 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 23:34:57,489 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 23:34:57,489 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 23:34:57,490 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 23:34:57,491 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 23:34:57,491 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 23:34:57,491 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 23:34:57,491 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 23:34:57,492 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 23:34:57,494 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 23:34:57,495 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 23:34:57,495 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 23:34:57,495 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 23:34:57,495 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-24 23:34:57,495 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 23:34:57,496 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 23:34:57,496 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 23:34:57,496 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 23:34:57,496 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 23:34:57,497 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 23:34:57,497 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 23:34:57,497 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 23:34:57,497 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:34:57,497 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 23:34:57,498 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 23:34:57,498 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 23:34:57,500 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 23:34:57,500 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 23:34:57,500 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 23:34:57,501 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 23:34:57,501 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 23:34:57,501 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 23:34:57,502 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb010ae024b402436affeb854f96a5f9e0df3d8ec2cfe8b3a7f33676b7169a2c [2024-10-24 23:34:57,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 23:34:57,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 23:34:57,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 23:34:57,793 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 23:34:57,794 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 23:34:57,795 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_21-deref_read_racing.i [2024-10-24 23:34:59,236 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 23:34:59,463 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 23:34:59,465 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_21-deref_read_racing.i [2024-10-24 23:34:59,489 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee4d93117/537f979b9780450ea87fd258a8ce606a/FLAGbdbc54f80 [2024-10-24 23:34:59,501 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee4d93117/537f979b9780450ea87fd258a8ce606a [2024-10-24 23:34:59,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 23:34:59,503 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 23:34:59,505 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 23:34:59,505 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 23:34:59,511 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 23:34:59,512 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:34:59" (1/1) ... [2024-10-24 23:34:59,513 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34af7769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:34:59, skipping insertion in model container [2024-10-24 23:34:59,513 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:34:59" (1/1) ... [2024-10-24 23:34:59,568 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 23:34:59,946 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:34:59,959 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 23:35:00,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:35:00,064 INFO L204 MainTranslator]: Completed translation [2024-10-24 23:35:00,065 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:00 WrapperNode [2024-10-24 23:35:00,065 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 23:35:00,066 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 23:35:00,067 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 23:35:00,067 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 23:35:00,074 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:00" (1/1) ... [2024-10-24 23:35:00,088 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:00" (1/1) ... [2024-10-24 23:35:00,109 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2024-10-24 23:35:00,110 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 23:35:00,110 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 23:35:00,111 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 23:35:00,111 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 23:35:00,119 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:00" (1/1) ... [2024-10-24 23:35:00,119 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:00" (1/1) ... [2024-10-24 23:35:00,122 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:00" (1/1) ... [2024-10-24 23:35:00,138 INFO L175 MemorySlicer]: Split 18 memory accesses to 4 slices as follows [2, 5, 6, 5]. 33 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 1, 5]. The 2 writes are split as follows [0, 0, 2, 0]. [2024-10-24 23:35:00,138 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:00" (1/1) ... [2024-10-24 23:35:00,139 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:00" (1/1) ... [2024-10-24 23:35:00,143 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:00" (1/1) ... [2024-10-24 23:35:00,147 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:00" (1/1) ... [2024-10-24 23:35:00,149 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:00" (1/1) ... [2024-10-24 23:35:00,150 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:00" (1/1) ... [2024-10-24 23:35:00,153 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 23:35:00,157 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 23:35:00,158 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 23:35:00,158 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 23:35:00,159 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:00" (1/1) ... [2024-10-24 23:35:00,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:35:00,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:35:00,194 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 23:35:00,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 23:35:00,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 23:35:00,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 23:35:00,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 23:35:00,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-24 23:35:00,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 23:35:00,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 23:35:00,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 23:35:00,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-24 23:35:00,249 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-24 23:35:00,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 23:35:00,251 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-24 23:35:00,251 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-24 23:35:00,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 23:35:00,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 23:35:00,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 23:35:00,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-24 23:35:00,252 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-24 23:35:00,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 23:35:00,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 23:35:00,254 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 23:35:00,425 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 23:35:00,427 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 23:35:00,759 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 23:35:00,759 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 23:35:00,932 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 23:35:00,932 INFO L314 CfgBuilder]: Removed 9 assume(true) statements. [2024-10-24 23:35:00,933 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:35:00 BoogieIcfgContainer [2024-10-24 23:35:00,933 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 23:35:00,935 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 23:35:00,935 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 23:35:00,938 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 23:35:00,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:34:59" (1/3) ... [2024-10-24 23:35:00,939 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ebefbb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:35:00, skipping insertion in model container [2024-10-24 23:35:00,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:35:00" (2/3) ... [2024-10-24 23:35:00,939 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ebefbb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:35:00, skipping insertion in model container [2024-10-24 23:35:00,940 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:35:00" (3/3) ... [2024-10-24 23:35:00,941 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_21-deref_read_racing.i [2024-10-24 23:35:00,956 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 23:35:00,956 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-10-24 23:35:00,956 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 23:35:00,991 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 23:35:01,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 49 transitions, 102 flow [2024-10-24 23:35:01,057 INFO L124 PetriNetUnfolderBase]: 10/59 cut-off events. [2024-10-24 23:35:01,057 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:35:01,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 59 events. 10/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 155 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 46. Up to 4 conditions per place. [2024-10-24 23:35:01,065 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 49 transitions, 102 flow [2024-10-24 23:35:01,071 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 49 transitions, 102 flow [2024-10-24 23:35:01,080 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:35:01,089 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;@714b6a8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:35:01,089 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-10-24 23:35:01,094 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:35:01,094 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-10-24 23:35:01,094 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:35:01,094 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:35:01,095 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-24 23:35:01,095 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-10-24 23:35:01,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:35:01,101 INFO L85 PathProgramCache]: Analyzing trace with hash 316449182, now seen corresponding path program 1 times [2024-10-24 23:35:01,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:35:01,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483997740] [2024-10-24 23:35:01,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:01,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:35:01,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:35:01,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:35:01,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:35:01,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483997740] [2024-10-24 23:35:01,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483997740] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:35:01,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:35:01,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:35:01,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041097718] [2024-10-24 23:35:01,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:35:01,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:35:01,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:35:01,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:35:01,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:35:01,488 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-10-24 23:35:01,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 49 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:35:01,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:35:01,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-10-24 23:35:01,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:35:01,662 INFO L124 PetriNetUnfolderBase]: 88/260 cut-off events. [2024-10-24 23:35:01,662 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:35:01,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 260 events. 88/260 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1221 event pairs, 0 based on Foata normal form. 60/306 useless extension candidates. Maximal degree in co-relation 440. Up to 162 conditions per place. [2024-10-24 23:35:01,668 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 41 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2024-10-24 23:35:01,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 62 transitions, 216 flow [2024-10-24 23:35:01,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:35:01,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:35:01,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2024-10-24 23:35:01,684 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7091836734693877 [2024-10-24 23:35:01,685 INFO L175 Difference]: Start difference. First operand has 44 places, 49 transitions, 102 flow. Second operand 4 states and 139 transitions. [2024-10-24 23:35:01,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 62 transitions, 216 flow [2024-10-24 23:35:01,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 62 transitions, 216 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:35:01,695 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 92 flow [2024-10-24 23:35:01,697 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=92, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-10-24 23:35:01,701 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 2 predicate places. [2024-10-24 23:35:01,701 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 92 flow [2024-10-24 23:35:01,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:35:01,702 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:35:01,702 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-10-24 23:35:01,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 23:35:01,703 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-10-24 23:35:01,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:35:01,705 INFO L85 PathProgramCache]: Analyzing trace with hash -115315048, now seen corresponding path program 1 times [2024-10-24 23:35:01,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:35:01,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336411068] [2024-10-24 23:35:01,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:01,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:35:01,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:35:01,743 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:35:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:35:01,785 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:35:01,785 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 23:35:01,787 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2024-10-24 23:35:01,789 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2024-10-24 23:35:01,791 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2024-10-24 23:35:01,791 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2024-10-24 23:35:01,791 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2024-10-24 23:35:01,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2024-10-24 23:35:01,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2024-10-24 23:35:01,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2024-10-24 23:35:01,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2024-10-24 23:35:01,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2024-10-24 23:35:01,794 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2024-10-24 23:35:01,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 23:35:01,794 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-24 23:35:01,797 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 23:35:01,797 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-24 23:35:01,827 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 23:35:01,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 81 transitions, 172 flow [2024-10-24 23:35:01,845 INFO L124 PetriNetUnfolderBase]: 18/106 cut-off events. [2024-10-24 23:35:01,845 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 23:35:01,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 106 events. 18/106 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 344 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 77. Up to 6 conditions per place. [2024-10-24 23:35:01,846 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 81 transitions, 172 flow [2024-10-24 23:35:01,848 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 81 transitions, 172 flow [2024-10-24 23:35:01,851 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:35:01,852 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;@714b6a8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:35:01,852 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-10-24 23:35:01,858 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:35:01,858 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-10-24 23:35:01,858 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:35:01,858 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:35:01,859 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-24 23:35:01,859 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 23:35:01,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:35:01,862 INFO L85 PathProgramCache]: Analyzing trace with hash 393777678, now seen corresponding path program 1 times [2024-10-24 23:35:01,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:35:01,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235866775] [2024-10-24 23:35:01,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:01,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:35:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:35:01,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:35:01,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:35:01,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235866775] [2024-10-24 23:35:01,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235866775] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:35:01,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:35:01,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:35:01,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905297244] [2024-10-24 23:35:01,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:35:01,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:35:01,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:35:01,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:35:01,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:35:01,961 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 81 [2024-10-24 23:35:01,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 81 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:35:01,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:35:01,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 81 [2024-10-24 23:35:01,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:35:02,792 INFO L124 PetriNetUnfolderBase]: 2860/5993 cut-off events. [2024-10-24 23:35:02,793 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-10-24 23:35:02,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10589 conditions, 5993 events. 2860/5993 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 47342 event pairs, 1596 based on Foata normal form. 1239/6669 useless extension candidates. Maximal degree in co-relation 2143. Up to 4518 conditions per place. [2024-10-24 23:35:02,841 INFO L140 encePairwiseOnDemand]: 61/81 looper letters, 57 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2024-10-24 23:35:02,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 92 transitions, 314 flow [2024-10-24 23:35:02,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:35:02,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:35:02,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2024-10-24 23:35:02,845 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6697530864197531 [2024-10-24 23:35:02,846 INFO L175 Difference]: Start difference. First operand has 72 places, 81 transitions, 172 flow. Second operand 4 states and 217 transitions. [2024-10-24 23:35:02,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 92 transitions, 314 flow [2024-10-24 23:35:02,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 92 transitions, 314 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:35:02,850 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 168 flow [2024-10-24 23:35:02,850 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2024-10-24 23:35:02,851 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 5 predicate places. [2024-10-24 23:35:02,851 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 168 flow [2024-10-24 23:35:02,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:35:02,851 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:35:02,852 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:35:02,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 23:35:02,852 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 23:35:02,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:35:02,853 INFO L85 PathProgramCache]: Analyzing trace with hash -551578820, now seen corresponding path program 1 times [2024-10-24 23:35:02,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:35:02,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397487490] [2024-10-24 23:35:02,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:02,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:35:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:35:02,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:35:02,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:35:02,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397487490] [2024-10-24 23:35:02,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397487490] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:35:02,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:35:02,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:35:02,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537980024] [2024-10-24 23:35:02,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:35:03,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:35:03,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:35:03,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:35:03,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:35:03,009 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 81 [2024-10-24 23:35:03,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:35:03,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:35:03,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 81 [2024-10-24 23:35:03,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:35:03,634 INFO L124 PetriNetUnfolderBase]: 2393/5170 cut-off events. [2024-10-24 23:35:03,634 INFO L125 PetriNetUnfolderBase]: For 394/727 co-relation queries the response was YES. [2024-10-24 23:35:03,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9434 conditions, 5170 events. 2393/5170 cut-off events. For 394/727 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 40087 event pairs, 757 based on Foata normal form. 115/5011 useless extension candidates. Maximal degree in co-relation 9333. Up to 3353 conditions per place. [2024-10-24 23:35:03,680 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 74 selfloop transitions, 6 changer transitions 0/114 dead transitions. [2024-10-24 23:35:03,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 114 transitions, 446 flow [2024-10-24 23:35:03,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:35:03,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:35:03,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 246 transitions. [2024-10-24 23:35:03,682 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6074074074074074 [2024-10-24 23:35:03,682 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 168 flow. Second operand 5 states and 246 transitions. [2024-10-24 23:35:03,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 114 transitions, 446 flow [2024-10-24 23:35:03,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 114 transitions, 442 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:35:03,686 INFO L231 Difference]: Finished difference. Result has 83 places, 74 transitions, 210 flow [2024-10-24 23:35:03,686 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=210, PETRI_PLACES=83, PETRI_TRANSITIONS=74} [2024-10-24 23:35:03,687 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 11 predicate places. [2024-10-24 23:35:03,687 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 74 transitions, 210 flow [2024-10-24 23:35:03,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:35:03,687 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:35:03,687 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-10-24 23:35:03,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 23:35:03,688 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 23:35:03,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:35:03,688 INFO L85 PathProgramCache]: Analyzing trace with hash 634657270, now seen corresponding path program 1 times [2024-10-24 23:35:03,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:35:03,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375838558] [2024-10-24 23:35:03,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:03,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:35:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:35:03,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:35:03,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:35:03,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375838558] [2024-10-24 23:35:03,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375838558] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:35:03,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658784066] [2024-10-24 23:35:03,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:03,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:35:03,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:35:03,771 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:35:03,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 23:35:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:35:03,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:35:03,856 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:35:03,936 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:35:03,936 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:35:03,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658784066] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:35:03,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:35:03,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2024-10-24 23:35:03,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671626139] [2024-10-24 23:35:03,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:35:03,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:35:03,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:35:03,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:35:03,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-24 23:35:03,945 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 81 [2024-10-24 23:35:03,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 210 flow. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:35:03,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:35:03,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 81 [2024-10-24 23:35:03,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:35:04,544 INFO L124 PetriNetUnfolderBase]: 3028/5702 cut-off events. [2024-10-24 23:35:04,545 INFO L125 PetriNetUnfolderBase]: For 1030/1030 co-relation queries the response was YES. [2024-10-24 23:35:04,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12034 conditions, 5702 events. 3028/5702 cut-off events. For 1030/1030 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 42531 event pairs, 671 based on Foata normal form. 152/5484 useless extension candidates. Maximal degree in co-relation 11152. Up to 2271 conditions per place. [2024-10-24 23:35:04,586 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 90 selfloop transitions, 6 changer transitions 0/127 dead transitions. [2024-10-24 23:35:04,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 127 transitions, 552 flow [2024-10-24 23:35:04,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:35:04,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:35:04,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 204 transitions. [2024-10-24 23:35:04,588 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2024-10-24 23:35:04,588 INFO L175 Difference]: Start difference. First operand has 83 places, 74 transitions, 210 flow. Second operand 4 states and 204 transitions. [2024-10-24 23:35:04,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 127 transitions, 552 flow [2024-10-24 23:35:04,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 127 transitions, 552 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:35:04,593 INFO L231 Difference]: Finished difference. Result has 85 places, 73 transitions, 218 flow [2024-10-24 23:35:04,593 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=85, PETRI_TRANSITIONS=73} [2024-10-24 23:35:04,594 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 13 predicate places. [2024-10-24 23:35:04,594 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 73 transitions, 218 flow [2024-10-24 23:35:04,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:35:04,594 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:35:04,595 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-10-24 23:35:04,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 23:35:04,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:35:04,797 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 23:35:04,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:35:04,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1800460708, now seen corresponding path program 1 times [2024-10-24 23:35:04,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:35:04,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291772425] [2024-10-24 23:35:04,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:04,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:35:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:35:04,857 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:35:04,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:35:04,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291772425] [2024-10-24 23:35:04,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291772425] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:35:04,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:35:04,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:35:04,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920256196] [2024-10-24 23:35:04,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:35:04,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:35:04,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:35:04,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:35:04,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:35:04,867 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 81 [2024-10-24 23:35:04,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 73 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 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) [2024-10-24 23:35:04,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:35:04,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 81 [2024-10-24 23:35:04,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:35:05,472 INFO L124 PetriNetUnfolderBase]: 2459/4829 cut-off events. [2024-10-24 23:35:05,473 INFO L125 PetriNetUnfolderBase]: For 1738/1738 co-relation queries the response was YES. [2024-10-24 23:35:05,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10486 conditions, 4829 events. 2459/4829 cut-off events. For 1738/1738 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 35483 event pairs, 254 based on Foata normal form. 152/4881 useless extension candidates. Maximal degree in co-relation 9719. Up to 2725 conditions per place. [2024-10-24 23:35:05,506 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 89 selfloop transitions, 6 changer transitions 0/127 dead transitions. [2024-10-24 23:35:05,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 127 transitions, 560 flow [2024-10-24 23:35:05,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:35:05,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:35:05,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 207 transitions. [2024-10-24 23:35:05,508 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-10-24 23:35:05,508 INFO L175 Difference]: Start difference. First operand has 85 places, 73 transitions, 218 flow. Second operand 4 states and 207 transitions. [2024-10-24 23:35:05,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 127 transitions, 560 flow [2024-10-24 23:35:05,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 127 transitions, 548 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 23:35:05,514 INFO L231 Difference]: Finished difference. Result has 85 places, 73 transitions, 222 flow [2024-10-24 23:35:05,514 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=85, PETRI_TRANSITIONS=73} [2024-10-24 23:35:05,515 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 13 predicate places. [2024-10-24 23:35:05,515 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 73 transitions, 222 flow [2024-10-24 23:35:05,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 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) [2024-10-24 23:35:05,516 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:35:05,516 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2024-10-24 23:35:05,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 23:35:05,516 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-10-24 23:35:05,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:35:05,517 INFO L85 PathProgramCache]: Analyzing trace with hash 629092752, now seen corresponding path program 1 times [2024-10-24 23:35:05,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:35:05,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783386776] [2024-10-24 23:35:05,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:05,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:35:05,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:35:05,529 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:35:05,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:35:05,544 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:35:05,544 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 23:35:05,544 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2024-10-24 23:35:05,544 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2024-10-24 23:35:05,545 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2024-10-24 23:35:05,545 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2024-10-24 23:35:05,545 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2024-10-24 23:35:05,548 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2024-10-24 23:35:05,548 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2024-10-24 23:35:05,548 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2024-10-24 23:35:05,548 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2024-10-24 23:35:05,549 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2024-10-24 23:35:05,549 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2024-10-24 23:35:05,549 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2024-10-24 23:35:05,549 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2024-10-24 23:35:05,549 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2024-10-24 23:35:05,550 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2024-10-24 23:35:05,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 23:35:05,553 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-24 23:35:05,553 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 23:35:05,553 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-24 23:35:05,578 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 23:35:05,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 113 transitions, 244 flow [2024-10-24 23:35:05,592 INFO L124 PetriNetUnfolderBase]: 26/153 cut-off events. [2024-10-24 23:35:05,592 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-24 23:35:05,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 153 events. 26/153 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 527 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 117. Up to 8 conditions per place. [2024-10-24 23:35:05,593 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 113 transitions, 244 flow [2024-10-24 23:35:05,595 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 113 transitions, 244 flow [2024-10-24 23:35:05,596 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:35:05,597 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;@714b6a8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:35:05,597 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-10-24 23:35:05,599 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:35:05,600 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-10-24 23:35:05,600 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:35:05,600 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:35:05,600 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-24 23:35:05,600 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-24 23:35:05,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:35:05,601 INFO L85 PathProgramCache]: Analyzing trace with hash 501643934, now seen corresponding path program 1 times [2024-10-24 23:35:05,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:35:05,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370081095] [2024-10-24 23:35:05,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:05,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:35:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:35:05,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:35:05,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:35:05,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370081095] [2024-10-24 23:35:05,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370081095] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:35:05,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:35:05,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:35:05,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941743049] [2024-10-24 23:35:05,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:35:05,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:35:05,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:35:05,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:35:05,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:35:05,647 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 113 [2024-10-24 23:35:05,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 113 transitions, 244 flow. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:35:05,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:35:05,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 113 [2024-10-24 23:35:05,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:35:13,493 INFO L124 PetriNetUnfolderBase]: 53548/96435 cut-off events. [2024-10-24 23:35:13,493 INFO L125 PetriNetUnfolderBase]: For 1002/1002 co-relation queries the response was YES. [2024-10-24 23:35:13,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171304 conditions, 96435 events. 53548/96435 cut-off events. For 1002/1002 co-relation queries the response was YES. Maximal size of possible extension queue 2346. Compared 968902 event pairs, 51804 based on Foata normal form. 21332/109397 useless extension candidates. Maximal degree in co-relation 87005. Up to 74214 conditions per place. [2024-10-24 23:35:14,352 INFO L140 encePairwiseOnDemand]: 87/113 looper letters, 69 selfloop transitions, 3 changer transitions 0/118 dead transitions. [2024-10-24 23:35:14,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 118 transitions, 398 flow [2024-10-24 23:35:14,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:35:14,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:35:14,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 291 transitions. [2024-10-24 23:35:14,356 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6438053097345132 [2024-10-24 23:35:14,356 INFO L175 Difference]: Start difference. First operand has 100 places, 113 transitions, 244 flow. Second operand 4 states and 291 transitions. [2024-10-24 23:35:14,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 118 transitions, 398 flow [2024-10-24 23:35:14,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 118 transitions, 396 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-24 23:35:14,362 INFO L231 Difference]: Finished difference. Result has 105 places, 95 transitions, 226 flow [2024-10-24 23:35:14,365 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=226, PETRI_PLACES=105, PETRI_TRANSITIONS=95} [2024-10-24 23:35:14,366 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 5 predicate places. [2024-10-24 23:35:14,366 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 95 transitions, 226 flow [2024-10-24 23:35:14,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:35:14,366 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:35:14,367 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-10-24 23:35:14,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 23:35:14,368 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-24 23:35:14,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:35:14,369 INFO L85 PathProgramCache]: Analyzing trace with hash -67177482, now seen corresponding path program 1 times [2024-10-24 23:35:14,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:35:14,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273864393] [2024-10-24 23:35:14,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:14,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:35:14,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:35:14,448 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:35:14,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:35:14,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273864393] [2024-10-24 23:35:14,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273864393] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:35:14,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346315838] [2024-10-24 23:35:14,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:14,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:35:14,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:35:14,453 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:35:14,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 23:35:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:35:14,539 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:35:14,540 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:35:14,583 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:35:14,584 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:35:14,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346315838] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:35:14,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:35:14,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2024-10-24 23:35:14,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063382180] [2024-10-24 23:35:14,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:35:14,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:35:14,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:35:14,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:35:14,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-24 23:35:14,593 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 113 [2024-10-24 23:35:14,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 95 transitions, 226 flow. Second operand has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:35:14,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:35:14,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 113 [2024-10-24 23:35:14,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:35:20,654 INFO L124 PetriNetUnfolderBase]: 53559/84206 cut-off events. [2024-10-24 23:35:20,654 INFO L125 PetriNetUnfolderBase]: For 4324/4324 co-relation queries the response was YES. [2024-10-24 23:35:20,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166506 conditions, 84206 events. 53559/84206 cut-off events. For 4324/4324 co-relation queries the response was YES. Maximal size of possible extension queue 1995. Compared 735058 event pairs, 13354 based on Foata normal form. 1872/81329 useless extension candidates. Maximal degree in co-relation 137981. Up to 34556 conditions per place. [2024-10-24 23:35:21,234 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 109 selfloop transitions, 6 changer transitions 0/160 dead transitions. [2024-10-24 23:35:21,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 160 transitions, 584 flow [2024-10-24 23:35:21,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:35:21,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:35:21,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 294 transitions. [2024-10-24 23:35:21,236 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6504424778761062 [2024-10-24 23:35:21,236 INFO L175 Difference]: Start difference. First operand has 105 places, 95 transitions, 226 flow. Second operand 4 states and 294 transitions. [2024-10-24 23:35:21,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 160 transitions, 584 flow [2024-10-24 23:35:21,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 160 transitions, 582 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:35:21,258 INFO L231 Difference]: Finished difference. Result has 106 places, 94 transitions, 232 flow [2024-10-24 23:35:21,258 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=106, PETRI_TRANSITIONS=94} [2024-10-24 23:35:21,259 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 6 predicate places. [2024-10-24 23:35:21,259 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 94 transitions, 232 flow [2024-10-24 23:35:21,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:35:21,260 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:35:21,260 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:35:21,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 23:35:21,460 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,SelfDestructingSolverStorable8 [2024-10-24 23:35:21,461 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-24 23:35:21,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:35:21,462 INFO L85 PathProgramCache]: Analyzing trace with hash -228615717, now seen corresponding path program 1 times [2024-10-24 23:35:21,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:35:21,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978202267] [2024-10-24 23:35:21,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:21,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:35:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:35:21,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:35:21,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:35:21,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978202267] [2024-10-24 23:35:21,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978202267] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:35:21,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:35:21,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:35:21,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350748790] [2024-10-24 23:35:21,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:35:21,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:35:21,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:35:21,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:35:21,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:35:21,545 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 113 [2024-10-24 23:35:21,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 94 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:35:21,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:35:21,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 113 [2024-10-24 23:35:21,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:35:27,535 INFO L124 PetriNetUnfolderBase]: 47105/82279 cut-off events. [2024-10-24 23:35:27,536 INFO L125 PetriNetUnfolderBase]: For 16535/18794 co-relation queries the response was YES. [2024-10-24 23:35:27,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157481 conditions, 82279 events. 47105/82279 cut-off events. For 16535/18794 co-relation queries the response was YES. Maximal size of possible extension queue 2159. Compared 787290 event pairs, 18833 based on Foata normal form. 1267/79515 useless extension candidates. Maximal degree in co-relation 134808. Up to 60521 conditions per place. [2024-10-24 23:35:27,998 INFO L140 encePairwiseOnDemand]: 106/113 looper letters, 110 selfloop transitions, 8 changer transitions 0/165 dead transitions. [2024-10-24 23:35:27,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 165 transitions, 667 flow [2024-10-24 23:35:27,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:35:27,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:35:28,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 354 transitions. [2024-10-24 23:35:28,000 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6265486725663717 [2024-10-24 23:35:28,000 INFO L175 Difference]: Start difference. First operand has 106 places, 94 transitions, 232 flow. Second operand 5 states and 354 transitions. [2024-10-24 23:35:28,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 165 transitions, 667 flow [2024-10-24 23:35:28,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 165 transitions, 639 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 23:35:28,014 INFO L231 Difference]: Finished difference. Result has 110 places, 101 transitions, 281 flow [2024-10-24 23:35:28,015 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=281, PETRI_PLACES=110, PETRI_TRANSITIONS=101} [2024-10-24 23:35:28,016 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 10 predicate places. [2024-10-24 23:35:28,017 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 101 transitions, 281 flow [2024-10-24 23:35:28,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:35:28,018 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:35:28,018 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-10-24 23:35:28,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 23:35:28,018 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-24 23:35:28,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:35:28,019 INFO L85 PathProgramCache]: Analyzing trace with hash -2082501427, now seen corresponding path program 1 times [2024-10-24 23:35:28,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:35:28,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038675035] [2024-10-24 23:35:28,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:28,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:35:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:35:28,064 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:35:28,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:35:28,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038675035] [2024-10-24 23:35:28,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038675035] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:35:28,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:35:28,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:35:28,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419195585] [2024-10-24 23:35:28,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:35:28,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:35:28,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:35:28,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:35:28,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:35:28,071 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 113 [2024-10-24 23:35:28,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 101 transitions, 281 flow. Second operand has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:35:28,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:35:28,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 113 [2024-10-24 23:35:28,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:35:33,683 INFO L124 PetriNetUnfolderBase]: 48909/79486 cut-off events. [2024-10-24 23:35:33,683 INFO L125 PetriNetUnfolderBase]: For 18311/18311 co-relation queries the response was YES. [2024-10-24 23:35:33,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166850 conditions, 79486 events. 48909/79486 cut-off events. For 18311/18311 co-relation queries the response was YES. Maximal size of possible extension queue 2031. Compared 721460 event pairs, 8573 based on Foata normal form. 0/78190 useless extension candidates. Maximal degree in co-relation 145199. Up to 46837 conditions per place. [2024-10-24 23:35:34,488 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 129 selfloop transitions, 6 changer transitions 0/181 dead transitions. [2024-10-24 23:35:34,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 181 transitions, 781 flow [2024-10-24 23:35:34,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:35:34,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:35:34,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 297 transitions. [2024-10-24 23:35:34,490 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6570796460176991 [2024-10-24 23:35:34,490 INFO L175 Difference]: Start difference. First operand has 110 places, 101 transitions, 281 flow. Second operand 4 states and 297 transitions. [2024-10-24 23:35:34,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 181 transitions, 781 flow [2024-10-24 23:35:34,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 181 transitions, 781 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:35:34,505 INFO L231 Difference]: Finished difference. Result has 113 places, 101 transitions, 297 flow [2024-10-24 23:35:34,505 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=297, PETRI_PLACES=113, PETRI_TRANSITIONS=101} [2024-10-24 23:35:34,506 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 13 predicate places. [2024-10-24 23:35:34,506 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 101 transitions, 297 flow [2024-10-24 23:35:34,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:35:34,506 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:35:34,507 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:35:34,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 23:35:34,507 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-24 23:35:34,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:35:34,508 INFO L85 PathProgramCache]: Analyzing trace with hash -155216251, now seen corresponding path program 1 times [2024-10-24 23:35:34,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:35:34,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871215666] [2024-10-24 23:35:34,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:34,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:35:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:35:34,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:35:34,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:35:34,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871215666] [2024-10-24 23:35:34,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871215666] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:35:34,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:35:34,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:35:34,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894299124] [2024-10-24 23:35:34,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:35:34,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:35:34,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:35:34,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:35:34,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:35:34,589 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 113 [2024-10-24 23:35:34,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 101 transitions, 297 flow. Second operand has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:35:34,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:35:34,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 113 [2024-10-24 23:35:34,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:35:41,483 INFO L124 PetriNetUnfolderBase]: 52665/92845 cut-off events. [2024-10-24 23:35:41,483 INFO L125 PetriNetUnfolderBase]: For 37570/37596 co-relation queries the response was YES. [2024-10-24 23:35:41,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195204 conditions, 92845 events. 52665/92845 cut-off events. For 37570/37596 co-relation queries the response was YES. Maximal size of possible extension queue 2487. Compared 913359 event pairs, 21673 based on Foata normal form. 2634/92127 useless extension candidates. Maximal degree in co-relation 170024. Up to 68097 conditions per place. [2024-10-24 23:35:42,048 INFO L140 encePairwiseOnDemand]: 106/113 looper letters, 111 selfloop transitions, 11 changer transitions 0/168 dead transitions. [2024-10-24 23:35:42,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 168 transitions, 759 flow [2024-10-24 23:35:42,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:35:42,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:35:42,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 353 transitions. [2024-10-24 23:35:42,050 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6247787610619469 [2024-10-24 23:35:42,050 INFO L175 Difference]: Start difference. First operand has 113 places, 101 transitions, 297 flow. Second operand 5 states and 353 transitions. [2024-10-24 23:35:42,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 168 transitions, 759 flow [2024-10-24 23:35:42,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 168 transitions, 744 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:35:42,090 INFO L231 Difference]: Finished difference. Result has 118 places, 106 transitions, 362 flow [2024-10-24 23:35:42,091 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=362, PETRI_PLACES=118, PETRI_TRANSITIONS=106} [2024-10-24 23:35:42,091 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 18 predicate places. [2024-10-24 23:35:42,091 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 106 transitions, 362 flow [2024-10-24 23:35:42,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:35:42,092 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:35:42,092 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:35:42,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 23:35:42,092 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-24 23:35:42,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:35:42,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1025755457, now seen corresponding path program 1 times [2024-10-24 23:35:42,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:35:42,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422552612] [2024-10-24 23:35:42,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:35:42,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:35:42,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:35:42,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:35:42,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:35:42,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422552612] [2024-10-24 23:35:42,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422552612] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:35:42,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:35:42,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 23:35:42,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508417269] [2024-10-24 23:35:42,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:35:42,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:35:42,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:35:42,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:35:42,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 23:35:42,262 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 113 [2024-10-24 23:35:42,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 106 transitions, 362 flow. Second operand has 6 states, 6 states have (on average 46.833333333333336) internal successors, (281), 6 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:35:42,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:35:42,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 113 [2024-10-24 23:35:42,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand