./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/queue_ok_longest.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/queue_ok_longest.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 0e9bc4a9a6dcd238ac18925269a0bd7c8c54c2dafb57744151e37b58cf6eab8d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:03:49,092 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:03:49,145 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:03:49,150 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:03:49,151 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:03:49,169 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:03:49,171 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:03:49,171 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:03:49,172 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:03:49,172 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:03:49,173 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:03:49,173 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:03:49,173 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:03:49,173 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:03:49,174 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:03:49,174 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:03:49,174 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:03:49,174 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:03:49,175 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:03:49,175 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:03:49,175 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:03:49,178 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:03:49,178 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:03:49,179 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:03:49,179 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:03:49,179 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:03:49,180 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:03:49,180 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:03:49,180 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:03:49,180 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:03:49,180 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:03:49,180 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:03:49,181 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:03:49,181 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:03:49,181 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:03:49,181 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:03:49,181 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:03:49,181 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:03:49,182 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:03:49,182 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:03:49,182 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:03:49,185 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:03:49,185 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:03:49,185 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:03:49,186 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e9bc4a9a6dcd238ac18925269a0bd7c8c54c2dafb57744151e37b58cf6eab8d [2024-11-10 22:03:49,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:03:49,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:03:49,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:03:49,473 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:03:49,473 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:03:49,474 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/queue_ok_longest.i [2024-11-10 22:03:50,747 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:03:50,969 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:03:50,969 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_ok_longest.i [2024-11-10 22:03:50,991 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d21d79350/e132a93379814155aa0b78a49a2ef81f/FLAG2531fe83a [2024-11-10 22:03:51,004 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d21d79350/e132a93379814155aa0b78a49a2ef81f [2024-11-10 22:03:51,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:03:51,008 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:03:51,009 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:03:51,009 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:03:51,015 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:03:51,015 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:03:51" (1/1) ... [2024-11-10 22:03:51,016 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cebe280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:51, skipping insertion in model container [2024-11-10 22:03:51,016 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:03:51" (1/1) ... [2024-11-10 22:03:51,055 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:03:51,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:03:51,463 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:03:51,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:03:51,622 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:03:51,623 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:51 WrapperNode [2024-11-10 22:03:51,623 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:03:51,624 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:03:51,624 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:03:51,624 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:03:51,629 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:51" (1/1) ... [2024-11-10 22:03:51,668 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:51" (1/1) ... [2024-11-10 22:03:51,726 INFO L138 Inliner]: procedures = 274, calls = 1654, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 1811 [2024-11-10 22:03:51,727 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:03:51,727 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:03:51,727 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:03:51,728 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:03:51,737 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:51" (1/1) ... [2024-11-10 22:03:51,737 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:51" (1/1) ... [2024-11-10 22:03:51,750 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:51" (1/1) ... [2024-11-10 22:03:51,788 INFO L175 MemorySlicer]: Split 1635 memory accesses to 4 slices as follows [2, 5, 802, 826]. 51 percent of accesses are in the largest equivalence class. The 1610 initializations are split as follows [2, 5, 800, 803]. The 11 writes are split as follows [0, 0, 1, 10]. [2024-11-10 22:03:51,789 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:51" (1/1) ... [2024-11-10 22:03:51,789 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:51" (1/1) ... [2024-11-10 22:03:51,823 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:51" (1/1) ... [2024-11-10 22:03:51,826 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:51" (1/1) ... [2024-11-10 22:03:51,835 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:51" (1/1) ... [2024-11-10 22:03:51,840 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:51" (1/1) ... [2024-11-10 22:03:51,849 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:03:51,850 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:03:51,851 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:03:51,851 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:03:51,852 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:51" (1/1) ... [2024-11-10 22:03:51,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:03:51,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:03:51,882 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 22:03:51,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 22:03:51,982 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-10 22:03:51,985 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-10 22:03:51,985 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-10 22:03:51,985 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-10 22:03:51,985 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 22:03:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 22:03:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 22:03:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 22:03:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-10 22:03:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 22:03:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 22:03:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 22:03:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-10 22:03:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 22:03:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:03:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:03:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 22:03:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 22:03:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-10 22:03:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:03:51,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:03:51,989 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:03:52,143 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:03:52,145 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:03:53,566 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:03:53,566 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:04:19,158 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:04:19,158 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:04:19,159 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:04:19 BoogieIcfgContainer [2024-11-10 22:04:19,159 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:04:19,161 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:04:19,162 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:04:19,164 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:04:19,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:03:51" (1/3) ... [2024-11-10 22:04:19,165 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@623d8f37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:04:19, skipping insertion in model container [2024-11-10 22:04:19,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:03:51" (2/3) ... [2024-11-10 22:04:19,166 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@623d8f37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:04:19, skipping insertion in model container [2024-11-10 22:04:19,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:04:19" (3/3) ... [2024-11-10 22:04:19,167 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longest.i [2024-11-10 22:04:19,179 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:04:19,179 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-10 22:04:19,179 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:04:19,257 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 22:04:19,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 67 transitions, 148 flow [2024-11-10 22:04:19,389 INFO L124 PetriNetUnfolderBase]: 9/65 cut-off events. [2024-11-10 22:04:19,390 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 22:04:19,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 65 events. 9/65 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 188 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2024-11-10 22:04:19,394 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 67 transitions, 148 flow [2024-11-10 22:04:19,397 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 63 transitions, 135 flow [2024-11-10 22:04:19,407 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:04:19,413 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;@2044492e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:04:19,413 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-11-10 22:04:19,456 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:04:19,457 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-11-10 22:04:19,457 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 22:04:19,457 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:19,457 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:19,458 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-10 22:04:19,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:19,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1547370054, now seen corresponding path program 1 times [2024-11-10 22:04:19,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:19,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139371404] [2024-11-10 22:04:19,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:19,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:21,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:21,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:21,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139371404] [2024-11-10 22:04:21,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139371404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:04:21,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:04:21,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:04:21,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364353024] [2024-11-10 22:04:21,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:04:21,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:04:21,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:21,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:04:21,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:04:21,484 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 67 [2024-11-10 22:04:21,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:04:21,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:21,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 67 [2024-11-10 22:04:21,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:22,577 INFO L124 PetriNetUnfolderBase]: 1021/2163 cut-off events. [2024-11-10 22:04:22,578 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2024-11-10 22:04:22,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3809 conditions, 2163 events. 1021/2163 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 14562 event pairs, 210 based on Foata normal form. 122/1976 useless extension candidates. Maximal degree in co-relation 3662. Up to 1033 conditions per place. [2024-11-10 22:04:22,594 INFO L140 encePairwiseOnDemand]: 59/67 looper letters, 73 selfloop transitions, 5 changer transitions 0/103 dead transitions. [2024-11-10 22:04:22,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 103 transitions, 380 flow [2024-11-10 22:04:22,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:04:22,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:04:22,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 192 transitions. [2024-11-10 22:04:22,609 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7164179104477612 [2024-11-10 22:04:22,610 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 135 flow. Second operand 4 states and 192 transitions. [2024-11-10 22:04:22,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 103 transitions, 380 flow [2024-11-10 22:04:22,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 103 transitions, 371 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:04:22,621 INFO L231 Difference]: Finished difference. Result has 64 places, 65 transitions, 164 flow [2024-11-10 22:04:22,623 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=64, PETRI_TRANSITIONS=65} [2024-11-10 22:04:22,626 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2024-11-10 22:04:22,626 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 65 transitions, 164 flow [2024-11-10 22:04:22,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:04:22,627 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:22,627 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:22,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:04:22,629 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-10 22:04:22,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:22,630 INFO L85 PathProgramCache]: Analyzing trace with hash 723835126, now seen corresponding path program 1 times [2024-11-10 22:04:22,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:22,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061470270] [2024-11-10 22:04:22,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:22,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:23,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:23,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:23,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061470270] [2024-11-10 22:04:23,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061470270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:04:23,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:04:23,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:04:23,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991211489] [2024-11-10 22:04:23,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:04:23,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:04:23,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:23,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:04:23,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:04:23,908 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 67 [2024-11-10 22:04:23,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 65 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:04:23,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:23,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 67 [2024-11-10 22:04:23,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:24,487 INFO L124 PetriNetUnfolderBase]: 1016/2172 cut-off events. [2024-11-10 22:04:24,488 INFO L125 PetriNetUnfolderBase]: For 452/452 co-relation queries the response was YES. [2024-11-10 22:04:24,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4133 conditions, 2172 events. 1016/2172 cut-off events. For 452/452 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 14597 event pairs, 214 based on Foata normal form. 42/1961 useless extension candidates. Maximal degree in co-relation 2528. Up to 1122 conditions per place. [2024-11-10 22:04:24,497 INFO L140 encePairwiseOnDemand]: 62/67 looper letters, 81 selfloop transitions, 6 changer transitions 0/112 dead transitions. [2024-11-10 22:04:24,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 112 transitions, 443 flow [2024-11-10 22:04:24,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:04:24,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:04:24,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 224 transitions. [2024-11-10 22:04:24,499 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6686567164179105 [2024-11-10 22:04:24,499 INFO L175 Difference]: Start difference. First operand has 64 places, 65 transitions, 164 flow. Second operand 5 states and 224 transitions. [2024-11-10 22:04:24,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 112 transitions, 443 flow [2024-11-10 22:04:24,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 112 transitions, 438 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:04:24,502 INFO L231 Difference]: Finished difference. Result has 68 places, 66 transitions, 182 flow [2024-11-10 22:04:24,502 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=182, PETRI_PLACES=68, PETRI_TRANSITIONS=66} [2024-11-10 22:04:24,503 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 7 predicate places. [2024-11-10 22:04:24,503 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 66 transitions, 182 flow [2024-11-10 22:04:24,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:04:24,503 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:24,504 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:24,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 22:04:24,504 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-10 22:04:24,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:24,504 INFO L85 PathProgramCache]: Analyzing trace with hash -179025158, now seen corresponding path program 1 times [2024-11-10 22:04:24,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:24,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517390180] [2024-11-10 22:04:24,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:24,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:24,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:25,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:25,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:25,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517390180] [2024-11-10 22:04:25,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517390180] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:04:25,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:04:25,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:04:25,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794159856] [2024-11-10 22:04:25,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:04:25,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:04:25,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:25,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:04:25,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:04:25,663 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 67 [2024-11-10 22:04:25,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 182 flow. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:04:25,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:25,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 67 [2024-11-10 22:04:25,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:26,931 INFO L124 PetriNetUnfolderBase]: 1144/2430 cut-off events. [2024-11-10 22:04:26,932 INFO L125 PetriNetUnfolderBase]: For 564/564 co-relation queries the response was YES. [2024-11-10 22:04:26,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4707 conditions, 2430 events. 1144/2430 cut-off events. For 564/564 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 16336 event pairs, 208 based on Foata normal form. 42/2175 useless extension candidates. Maximal degree in co-relation 3048. Up to 1202 conditions per place. [2024-11-10 22:04:26,944 INFO L140 encePairwiseOnDemand]: 58/67 looper letters, 108 selfloop transitions, 11 changer transitions 0/144 dead transitions. [2024-11-10 22:04:26,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 144 transitions, 597 flow [2024-11-10 22:04:26,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 22:04:26,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 22:04:26,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 311 transitions. [2024-11-10 22:04:26,947 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6631130063965884 [2024-11-10 22:04:26,948 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 182 flow. Second operand 7 states and 311 transitions. [2024-11-10 22:04:26,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 144 transitions, 597 flow [2024-11-10 22:04:26,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 144 transitions, 584 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-10 22:04:26,952 INFO L231 Difference]: Finished difference. Result has 74 places, 72 transitions, 238 flow [2024-11-10 22:04:26,953 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=238, PETRI_PLACES=74, PETRI_TRANSITIONS=72} [2024-11-10 22:04:26,953 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 13 predicate places. [2024-11-10 22:04:26,954 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 72 transitions, 238 flow [2024-11-10 22:04:26,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:04:26,954 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:26,954 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:26,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 22:04:26,954 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-10 22:04:26,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:26,955 INFO L85 PathProgramCache]: Analyzing trace with hash -487483861, now seen corresponding path program 1 times [2024-11-10 22:04:26,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:26,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692500181] [2024-11-10 22:04:26,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:26,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:27,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:27,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:27,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692500181] [2024-11-10 22:04:27,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692500181] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:04:27,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:04:27,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:04:27,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306909101] [2024-11-10 22:04:27,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:04:27,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:04:27,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:27,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:04:27,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:04:27,400 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 67 [2024-11-10 22:04:27,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 72 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:04:27,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:27,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 67 [2024-11-10 22:04:27,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:27,723 INFO L124 PetriNetUnfolderBase]: 515/1215 cut-off events. [2024-11-10 22:04:27,723 INFO L125 PetriNetUnfolderBase]: For 422/422 co-relation queries the response was YES. [2024-11-10 22:04:27,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2485 conditions, 1215 events. 515/1215 cut-off events. For 422/422 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 7269 event pairs, 296 based on Foata normal form. 31/1147 useless extension candidates. Maximal degree in co-relation 2403. Up to 510 conditions per place. [2024-11-10 22:04:27,728 INFO L140 encePairwiseOnDemand]: 63/67 looper letters, 42 selfloop transitions, 2 changer transitions 6/77 dead transitions. [2024-11-10 22:04:27,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 77 transitions, 325 flow [2024-11-10 22:04:27,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:04:27,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:04:27,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 132 transitions. [2024-11-10 22:04:27,729 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6567164179104478 [2024-11-10 22:04:27,729 INFO L175 Difference]: Start difference. First operand has 74 places, 72 transitions, 238 flow. Second operand 3 states and 132 transitions. [2024-11-10 22:04:27,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 77 transitions, 325 flow [2024-11-10 22:04:27,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 77 transitions, 308 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-10 22:04:27,734 INFO L231 Difference]: Finished difference. Result has 71 places, 66 transitions, 191 flow [2024-11-10 22:04:27,734 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=191, PETRI_PLACES=71, PETRI_TRANSITIONS=66} [2024-11-10 22:04:27,736 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 10 predicate places. [2024-11-10 22:04:27,736 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 66 transitions, 191 flow [2024-11-10 22:04:27,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:04:27,736 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:27,736 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:27,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 22:04:27,737 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-10 22:04:27,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:27,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1254809878, now seen corresponding path program 1 times [2024-11-10 22:04:27,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:27,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910524718] [2024-11-10 22:04:27,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:27,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:27,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:27,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:27,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910524718] [2024-11-10 22:04:27,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910524718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:04:27,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:04:27,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:04:27,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084376792] [2024-11-10 22:04:27,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:04:27,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:04:27,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:27,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:04:27,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:04:27,952 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 67 [2024-11-10 22:04:27,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 66 transitions, 191 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:04:27,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:27,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 67 [2024-11-10 22:04:27,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:28,744 INFO L124 PetriNetUnfolderBase]: 455/1015 cut-off events. [2024-11-10 22:04:28,745 INFO L125 PetriNetUnfolderBase]: For 162/171 co-relation queries the response was YES. [2024-11-10 22:04:28,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2121 conditions, 1015 events. 455/1015 cut-off events. For 162/171 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5299 event pairs, 308 based on Foata normal form. 24/963 useless extension candidates. Maximal degree in co-relation 1923. Up to 618 conditions per place. [2024-11-10 22:04:28,749 INFO L140 encePairwiseOnDemand]: 61/67 looper letters, 54 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2024-11-10 22:04:28,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 81 transitions, 335 flow [2024-11-10 22:04:28,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:04:28,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:04:28,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-11-10 22:04:28,750 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6119402985074627 [2024-11-10 22:04:28,750 INFO L175 Difference]: Start difference. First operand has 71 places, 66 transitions, 191 flow. Second operand 4 states and 164 transitions. [2024-11-10 22:04:28,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 81 transitions, 335 flow [2024-11-10 22:04:28,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 81 transitions, 329 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-10 22:04:28,752 INFO L231 Difference]: Finished difference. Result has 74 places, 67 transitions, 203 flow [2024-11-10 22:04:28,752 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=203, PETRI_PLACES=74, PETRI_TRANSITIONS=67} [2024-11-10 22:04:28,753 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 13 predicate places. [2024-11-10 22:04:28,753 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 67 transitions, 203 flow [2024-11-10 22:04:28,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:04:28,753 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:28,753 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:28,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 22:04:28,754 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-10 22:04:28,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:28,754 INFO L85 PathProgramCache]: Analyzing trace with hash -852809960, now seen corresponding path program 1 times [2024-11-10 22:04:28,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:28,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514622857] [2024-11-10 22:04:28,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:28,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:28,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:29,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:29,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:29,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514622857] [2024-11-10 22:04:29,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514622857] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:04:29,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:04:29,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:04:29,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943922783] [2024-11-10 22:04:29,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:04:29,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:04:29,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:29,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:04:29,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:04:29,947 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 67 [2024-11-10 22:04:29,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 67 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:04:29,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:29,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 67 [2024-11-10 22:04:29,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:30,930 INFO L124 PetriNetUnfolderBase]: 398/974 cut-off events. [2024-11-10 22:04:30,930 INFO L125 PetriNetUnfolderBase]: For 217/217 co-relation queries the response was YES. [2024-11-10 22:04:30,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2069 conditions, 974 events. 398/974 cut-off events. For 217/217 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5196 event pairs, 118 based on Foata normal form. 12/931 useless extension candidates. Maximal degree in co-relation 1484. Up to 457 conditions per place. [2024-11-10 22:04:30,935 INFO L140 encePairwiseOnDemand]: 61/67 looper letters, 55 selfloop transitions, 5 changer transitions 3/90 dead transitions. [2024-11-10 22:04:30,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 90 transitions, 379 flow [2024-11-10 22:04:30,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:04:30,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:04:30,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 207 transitions. [2024-11-10 22:04:30,936 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6179104477611941 [2024-11-10 22:04:30,936 INFO L175 Difference]: Start difference. First operand has 74 places, 67 transitions, 203 flow. Second operand 5 states and 207 transitions. [2024-11-10 22:04:30,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 90 transitions, 379 flow [2024-11-10 22:04:30,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 90 transitions, 377 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:04:30,938 INFO L231 Difference]: Finished difference. Result has 77 places, 66 transitions, 206 flow [2024-11-10 22:04:30,938 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=206, PETRI_PLACES=77, PETRI_TRANSITIONS=66} [2024-11-10 22:04:30,939 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 16 predicate places. [2024-11-10 22:04:30,939 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 66 transitions, 206 flow [2024-11-10 22:04:30,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:04:30,939 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:04:30,939 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:04:30,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 22:04:30,940 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-10 22:04:30,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:04:30,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1123309346, now seen corresponding path program 1 times [2024-11-10 22:04:30,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:04:30,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029198816] [2024-11-10 22:04:30,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:30,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:04:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:33,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:33,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:04:33,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029198816] [2024-11-10 22:04:33,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029198816] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:04:33,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491113945] [2024-11-10 22:04:33,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:04:33,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:04:33,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:04:33,820 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:04:33,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 22:04:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:04:34,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 3393 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-10 22:04:34,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:04:34,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 9 [2024-11-10 22:04:34,388 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-10 22:04:34,402 INFO L349 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2024-11-10 22:04:34,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 35 [2024-11-10 22:04:34,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-10 22:04:34,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 18 [2024-11-10 22:04:34,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 35 [2024-11-10 22:04:34,599 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 22:04:34,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 25 [2024-11-10 22:04:34,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:34,615 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:04:35,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:04:35,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491113945] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:04:35,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:04:35,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 20 [2024-11-10 22:04:35,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82955386] [2024-11-10 22:04:35,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:04:35,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-10 22:04:35,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:04:35,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-10 22:04:35,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2024-11-10 22:04:39,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:04:39,463 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 67 [2024-11-10 22:04:39,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 66 transitions, 206 flow. Second operand has 22 states, 22 states have (on average 25.045454545454547) internal successors, (551), 22 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:04:39,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:04:39,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 67 [2024-11-10 22:04:39,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:04:45,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:04:49,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:04:53,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:04:57,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:05:01,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:05:06,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:05:10,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:05:14,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 22:05:15,181 INFO L124 PetriNetUnfolderBase]: 1202/2614 cut-off events. [2024-11-10 22:05:15,181 INFO L125 PetriNetUnfolderBase]: For 316/316 co-relation queries the response was YES. [2024-11-10 22:05:15,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5618 conditions, 2614 events. 1202/2614 cut-off events. For 316/316 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 16275 event pairs, 143 based on Foata normal form. 36/2508 useless extension candidates. Maximal degree in co-relation 4530. Up to 520 conditions per place. [2024-11-10 22:05:15,191 INFO L140 encePairwiseOnDemand]: 55/67 looper letters, 217 selfloop transitions, 27 changer transitions 3/268 dead transitions. [2024-11-10 22:05:15,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 268 transitions, 1201 flow [2024-11-10 22:05:15,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-10 22:05:15,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-10 22:05:15,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 756 transitions. [2024-11-10 22:05:15,194 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5128900949796472 [2024-11-10 22:05:15,194 INFO L175 Difference]: Start difference. First operand has 77 places, 66 transitions, 206 flow. Second operand 22 states and 756 transitions. [2024-11-10 22:05:15,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 268 transitions, 1201 flow [2024-11-10 22:05:15,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 268 transitions, 1191 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 22:05:15,200 INFO L231 Difference]: Finished difference. Result has 101 places, 86 transitions, 371 flow [2024-11-10 22:05:15,200 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=371, PETRI_PLACES=101, PETRI_TRANSITIONS=86} [2024-11-10 22:05:15,201 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 40 predicate places. [2024-11-10 22:05:15,201 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 86 transitions, 371 flow [2024-11-10 22:05:15,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 25.045454545454547) internal successors, (551), 22 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:05:15,202 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:05:15,202 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:05:15,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 22:05:15,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:05:15,408 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-11-10 22:05:15,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:05:15,409 INFO L85 PathProgramCache]: Analyzing trace with hash -462847650, now seen corresponding path program 1 times [2024-11-10 22:05:15,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:05:15,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248055805] [2024-11-10 22:05:15,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:05:15,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:05:15,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat