./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_37-indirect_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version fca748b1 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_37-indirect_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 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 21:55:59,299 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 21:55:59,363 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-20 21:55:59,369 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 21:55:59,369 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 21:55:59,393 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 21:55:59,394 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 21:55:59,395 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 21:55:59,396 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 21:55:59,398 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 21:55:59,398 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 21:55:59,399 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 21:55:59,399 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 21:55:59,401 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 21:55:59,401 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 21:55:59,402 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 21:55:59,402 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 21:55:59,402 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 21:55:59,402 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 21:55:59,403 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 21:55:59,403 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 21:55:59,407 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 21:55:59,407 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 21:55:59,407 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 21:55:59,408 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 21:55:59,408 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-20 21:55:59,408 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 21:55:59,408 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 21:55:59,409 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 21:55:59,409 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 21:55:59,409 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 21:55:59,409 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 21:55:59,410 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 21:55:59,410 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 21:55:59,411 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 21:55:59,411 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 21:55:59,411 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 21:55:59,412 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 21:55:59,412 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 21:55:59,412 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 21:55:59,412 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 21:55:59,413 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 21:55:59,413 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 21:55:59,413 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 21:55:59,413 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 [2024-11-20 21:55:59,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 21:55:59,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 21:55:59,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 21:55:59,690 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 21:55:59,691 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 21:55:59,692 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i [2024-11-20 21:56:01,139 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 21:56:01,393 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 21:56:01,394 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_37-indirect_racing.i [2024-11-20 21:56:01,409 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e0a0fb1d/e67a8e3aa1db4b7fb886a8996534fa2d/FLAG52fbbcb1a [2024-11-20 21:56:01,724 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e0a0fb1d/e67a8e3aa1db4b7fb886a8996534fa2d [2024-11-20 21:56:01,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 21:56:01,727 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 21:56:01,730 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 21:56:01,731 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 21:56:01,735 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 21:56:01,736 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:56:01" (1/1) ... [2024-11-20 21:56:01,736 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e5d18bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:56:01, skipping insertion in model container [2024-11-20 21:56:01,737 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:56:01" (1/1) ... [2024-11-20 21:56:01,772 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 21:56:02,146 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 21:56:02,168 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 21:56:02,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 21:56:02,279 INFO L204 MainTranslator]: Completed translation [2024-11-20 21:56:02,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:56:02 WrapperNode [2024-11-20 21:56:02,280 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 21:56:02,281 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 21:56:02,281 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 21:56:02,282 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 21:56:02,287 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:56:02" (1/1) ... [2024-11-20 21:56:02,299 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:56:02" (1/1) ... [2024-11-20 21:56:02,328 INFO L138 Inliner]: procedures = 171, calls = 41, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 84 [2024-11-20 21:56:02,332 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 21:56:02,333 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 21:56:02,333 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 21:56:02,333 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 21:56:02,345 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:56:02" (1/1) ... [2024-11-20 21:56:02,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:56:02" (1/1) ... [2024-11-20 21:56:02,348 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:56:02" (1/1) ... [2024-11-20 21:56:02,375 INFO L175 MemorySlicer]: Split 20 memory accesses to 5 slices as follows [2, 2, 5, 6, 5]. 30 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 0, 5, 1, 5]. The 3 writes are split as follows [0, 1, 0, 2, 0]. [2024-11-20 21:56:02,375 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:56:02" (1/1) ... [2024-11-20 21:56:02,376 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:56:02" (1/1) ... [2024-11-20 21:56:02,384 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:56:02" (1/1) ... [2024-11-20 21:56:02,388 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:56:02" (1/1) ... [2024-11-20 21:56:02,389 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:56:02" (1/1) ... [2024-11-20 21:56:02,391 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:56:02" (1/1) ... [2024-11-20 21:56:02,393 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 21:56:02,394 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 21:56:02,394 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 21:56:02,395 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 21:56:02,395 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:56:02" (1/1) ... [2024-11-20 21:56:02,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 21:56:02,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 21:56:02,435 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) [2024-11-20 21:56:02,439 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 [2024-11-20 21:56:02,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 21:56:02,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 21:56:02,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-20 21:56:02,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-20 21:56:02,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-20 21:56:02,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 21:56:02,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 21:56:02,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-20 21:56:02,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-20 21:56:02,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-20 21:56:02,498 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-20 21:56:02,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 21:56:02,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-20 21:56:02,499 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-20 21:56:02,499 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-20 21:56:02,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 21:56:02,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 21:56:02,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 21:56:02,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-20 21:56:02,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-20 21:56:02,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-20 21:56:02,501 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-20 21:56:02,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 21:56:02,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 21:56:02,503 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 21:56:02,671 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 21:56:02,674 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 21:56:02,968 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 21:56:02,968 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 21:56:03,146 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 21:56:03,147 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-20 21:56:03,149 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:56:03 BoogieIcfgContainer [2024-11-20 21:56:03,149 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 21:56:03,153 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 21:56:03,154 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 21:56:03,157 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 21:56:03,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:56:01" (1/3) ... [2024-11-20 21:56:03,158 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dc1abc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:56:03, skipping insertion in model container [2024-11-20 21:56:03,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:56:02" (2/3) ... [2024-11-20 21:56:03,159 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dc1abc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:56:03, skipping insertion in model container [2024-11-20 21:56:03,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:56:03" (3/3) ... [2024-11-20 21:56:03,161 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_37-indirect_racing.i [2024-11-20 21:56:03,179 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 21:56:03,179 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-20 21:56:03,180 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 21:56:03,225 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-20 21:56:03,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 57 transitions, 121 flow [2024-11-20 21:56:03,301 INFO L124 PetriNetUnfolderBase]: 11/69 cut-off events. [2024-11-20 21:56:03,301 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-20 21:56:03,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 69 events. 11/69 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 191 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 48. Up to 4 conditions per place. [2024-11-20 21:56:03,305 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 57 transitions, 121 flow [2024-11-20 21:56:03,309 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 56 transitions, 119 flow [2024-11-20 21:56:03,317 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 21:56:03,324 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;@2d4f9c2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 21:56:03,324 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-20 21:56:03,330 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 21:56:03,330 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-20 21:56:03,330 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 21:56:03,330 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:56:03,331 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-20 21:56:03,336 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-20 21:56:03,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:56:03,340 INFO L85 PathProgramCache]: Analyzing trace with hash 358019938, now seen corresponding path program 1 times [2024-11-20 21:56:03,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:56:03,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357920101] [2024-11-20 21:56:03,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:56:03,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:56:03,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:56:03,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:56:03,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:56:03,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357920101] [2024-11-20 21:56:03,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357920101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:56:03,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:56:03,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 21:56:03,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977860779] [2024-11-20 21:56:03,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:56:03,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:56:03,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:56:03,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:56:03,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:56:03,781 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 57 [2024-11-20 21:56:03,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 56 transitions, 119 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2024-11-20 21:56:03,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:56:03,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 57 [2024-11-20 21:56:03,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:56:04,014 INFO L124 PetriNetUnfolderBase]: 99/301 cut-off events. [2024-11-20 21:56:04,014 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-20 21:56:04,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 529 conditions, 301 events. 99/301 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1406 event pairs, 0 based on Foata normal form. 64/334 useless extension candidates. Maximal degree in co-relation 499. Up to 186 conditions per place. [2024-11-20 21:56:04,021 INFO L140 encePairwiseOnDemand]: 43/57 looper letters, 43 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2024-11-20 21:56:04,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 69 transitions, 237 flow [2024-11-20 21:56:04,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 21:56:04,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 21:56:04,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 161 transitions. [2024-11-20 21:56:04,036 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.706140350877193 [2024-11-20 21:56:04,038 INFO L175 Difference]: Start difference. First operand has 51 places, 56 transitions, 119 flow. Second operand 4 states and 161 transitions. [2024-11-20 21:56:04,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 69 transitions, 237 flow [2024-11-20 21:56:04,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 69 transitions, 237 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 21:56:04,047 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 109 flow [2024-11-20 21:56:04,049 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=109, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2024-11-20 21:56:04,055 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2024-11-20 21:56:04,056 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 109 flow [2024-11-20 21:56:04,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2024-11-20 21:56:04,056 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:56:04,057 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-20 21:56:04,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 21:56:04,057 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-20 21:56:04,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:56:04,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1368527425, now seen corresponding path program 1 times [2024-11-20 21:56:04,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:56:04,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245644439] [2024-11-20 21:56:04,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:56:04,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:56:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 21:56:04,085 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 21:56:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 21:56:04,161 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 21:56:04,164 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-20 21:56:04,165 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-11-20 21:56:04,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-11-20 21:56:04,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-11-20 21:56:04,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-11-20 21:56:04,168 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-11-20 21:56:04,168 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-11-20 21:56:04,168 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-11-20 21:56:04,168 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-11-20 21:56:04,168 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-11-20 21:56:04,169 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-11-20 21:56:04,169 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-11-20 21:56:04,169 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-11-20 21:56:04,169 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-11-20 21:56:04,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 21:56:04,170 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-20 21:56:04,173 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-20 21:56:04,173 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-20 21:56:04,204 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-20 21:56:04,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 90 transitions, 196 flow [2024-11-20 21:56:04,237 INFO L124 PetriNetUnfolderBase]: 21/133 cut-off events. [2024-11-20 21:56:04,239 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-20 21:56:04,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 133 events. 21/133 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 477 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 88. Up to 6 conditions per place. [2024-11-20 21:56:04,241 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 90 transitions, 196 flow [2024-11-20 21:56:04,244 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 90 transitions, 196 flow [2024-11-20 21:56:04,246 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 21:56:04,248 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;@2d4f9c2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 21:56:04,249 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-20 21:56:04,254 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 21:56:04,254 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-20 21:56:04,255 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 21:56:04,255 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:56:04,255 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-20 21:56:04,256 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-20 21:56:04,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:56:04,258 INFO L85 PathProgramCache]: Analyzing trace with hash 443937179, now seen corresponding path program 1 times [2024-11-20 21:56:04,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:56:04,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391031099] [2024-11-20 21:56:04,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:56:04,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:56:04,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:56:04,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:56:04,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:56:04,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391031099] [2024-11-20 21:56:04,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391031099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:56:04,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:56:04,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 21:56:04,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367516700] [2024-11-20 21:56:04,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:56:04,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:56:04,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:56:04,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:56:04,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:56:04,381 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 90 [2024-11-20 21:56:04,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 90 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2024-11-20 21:56:04,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:56:04,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 90 [2024-11-20 21:56:04,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:56:05,251 INFO L124 PetriNetUnfolderBase]: 3203/7079 cut-off events. [2024-11-20 21:56:05,253 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2024-11-20 21:56:05,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12264 conditions, 7079 events. 3203/7079 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 59631 event pairs, 1496 based on Foata normal form. 1367/7624 useless extension candidates. Maximal degree in co-relation 977. Up to 5081 conditions per place. [2024-11-20 21:56:05,319 INFO L140 encePairwiseOnDemand]: 70/90 looper letters, 61 selfloop transitions, 3 changer transitions 0/101 dead transitions. [2024-11-20 21:56:05,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 101 transitions, 346 flow [2024-11-20 21:56:05,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 21:56:05,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 21:56:05,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 241 transitions. [2024-11-20 21:56:05,323 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6694444444444444 [2024-11-20 21:56:05,324 INFO L175 Difference]: Start difference. First operand has 79 places, 90 transitions, 196 flow. Second operand 4 states and 241 transitions. [2024-11-20 21:56:05,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 101 transitions, 346 flow [2024-11-20 21:56:05,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 101 transitions, 346 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 21:56:05,329 INFO L231 Difference]: Finished difference. Result has 84 places, 78 transitions, 192 flow [2024-11-20 21:56:05,329 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=84, PETRI_TRANSITIONS=78} [2024-11-20 21:56:05,330 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 5 predicate places. [2024-11-20 21:56:05,330 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 78 transitions, 192 flow [2024-11-20 21:56:05,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2024-11-20 21:56:05,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:56:05,331 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-20 21:56:05,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 21:56:05,331 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-20 21:56:05,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:56:05,332 INFO L85 PathProgramCache]: Analyzing trace with hash -2008436726, now seen corresponding path program 1 times [2024-11-20 21:56:05,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:56:05,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304529448] [2024-11-20 21:56:05,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:56:05,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:56:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:56:05,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:56:05,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:56:05,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304529448] [2024-11-20 21:56:05,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304529448] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 21:56:05,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336811176] [2024-11-20 21:56:05,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:56:05,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 21:56:05,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 21:56:05,454 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) [2024-11-20 21:56:05,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 21:56:05,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:56:05,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 21:56:05,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 21:56:05,658 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:56:05,659 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 21:56:05,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336811176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:56:05,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 21:56:05,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-20 21:56:05,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052096784] [2024-11-20 21:56:05,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:56:05,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 21:56:05,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:56:05,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 21:56:05,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-20 21:56:05,674 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 90 [2024-11-20 21:56:05,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 78 transitions, 192 flow. Second operand has 6 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 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) [2024-11-20 21:56:05,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:56:05,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 90 [2024-11-20 21:56:05,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:56:06,501 INFO L124 PetriNetUnfolderBase]: 2939/6095 cut-off events. [2024-11-20 21:56:06,501 INFO L125 PetriNetUnfolderBase]: For 648/648 co-relation queries the response was YES. [2024-11-20 21:56:06,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11512 conditions, 6095 events. 2939/6095 cut-off events. For 648/648 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 48410 event pairs, 252 based on Foata normal form. 144/5743 useless extension candidates. Maximal degree in co-relation 949. Up to 2719 conditions per place. [2024-11-20 21:56:06,537 INFO L140 encePairwiseOnDemand]: 85/90 looper letters, 101 selfloop transitions, 6 changer transitions 0/144 dead transitions. [2024-11-20 21:56:06,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 144 transitions, 536 flow [2024-11-20 21:56:06,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 21:56:06,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 21:56:06,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 330 transitions. [2024-11-20 21:56:06,542 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-11-20 21:56:06,542 INFO L175 Difference]: Start difference. First operand has 84 places, 78 transitions, 192 flow. Second operand 6 states and 330 transitions. [2024-11-20 21:56:06,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 144 transitions, 536 flow [2024-11-20 21:56:06,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 144 transitions, 534 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 21:56:06,548 INFO L231 Difference]: Finished difference. Result has 87 places, 77 transitions, 198 flow [2024-11-20 21:56:06,548 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=87, PETRI_TRANSITIONS=77} [2024-11-20 21:56:06,549 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 8 predicate places. [2024-11-20 21:56:06,550 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 77 transitions, 198 flow [2024-11-20 21:56:06,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 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) [2024-11-20 21:56:06,550 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:56:06,551 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:56:06,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 21:56:06,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 21:56:06,755 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-20 21:56:06,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:56:06,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1022575054, now seen corresponding path program 1 times [2024-11-20 21:56:06,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:56:06,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047086863] [2024-11-20 21:56:06,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:56:06,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:56:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:56:06,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:56:06,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:56:06,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047086863] [2024-11-20 21:56:06,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047086863] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:56:06,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:56:06,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 21:56:06,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564493464] [2024-11-20 21:56:06,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:56:06,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 21:56:06,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:56:06,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 21:56:06,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 21:56:06,945 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 90 [2024-11-20 21:56:06,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 77 transitions, 198 flow. Second operand has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 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) [2024-11-20 21:56:06,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:56:06,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 90 [2024-11-20 21:56:06,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:56:07,635 INFO L124 PetriNetUnfolderBase]: 2816/6146 cut-off events. [2024-11-20 21:56:07,635 INFO L125 PetriNetUnfolderBase]: For 1303/1464 co-relation queries the response was YES. [2024-11-20 21:56:07,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11488 conditions, 6146 events. 2816/6146 cut-off events. For 1303/1464 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 49838 event pairs, 911 based on Foata normal form. 121/5719 useless extension candidates. Maximal degree in co-relation 9011. Up to 3985 conditions per place. [2024-11-20 21:56:07,666 INFO L140 encePairwiseOnDemand]: 84/90 looper letters, 83 selfloop transitions, 6 changer transitions 0/127 dead transitions. [2024-11-20 21:56:07,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 127 transitions, 521 flow [2024-11-20 21:56:07,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 21:56:07,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 21:56:07,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 280 transitions. [2024-11-20 21:56:07,668 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2024-11-20 21:56:07,668 INFO L175 Difference]: Start difference. First operand has 87 places, 77 transitions, 198 flow. Second operand 5 states and 280 transitions. [2024-11-20 21:56:07,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 127 transitions, 521 flow [2024-11-20 21:56:07,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 127 transitions, 498 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-20 21:56:07,676 INFO L231 Difference]: Finished difference. Result has 90 places, 82 transitions, 230 flow [2024-11-20 21:56:07,676 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=90, PETRI_TRANSITIONS=82} [2024-11-20 21:56:07,677 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 11 predicate places. [2024-11-20 21:56:07,678 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 82 transitions, 230 flow [2024-11-20 21:56:07,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 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) [2024-11-20 21:56:07,678 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:56:07,678 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-20 21:56:07,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 21:56:07,678 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-20 21:56:07,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:56:07,679 INFO L85 PathProgramCache]: Analyzing trace with hash -2131995919, now seen corresponding path program 1 times [2024-11-20 21:56:07,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:56:07,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842063982] [2024-11-20 21:56:07,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:56:07,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:56:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:56:07,731 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 21:56:07,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:56:07,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842063982] [2024-11-20 21:56:07,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842063982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:56:07,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:56:07,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 21:56:07,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591562227] [2024-11-20 21:56:07,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:56:07,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:56:07,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:56:07,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:56:07,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:56:07,742 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 90 [2024-11-20 21:56:07,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 82 transitions, 230 flow. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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) [2024-11-20 21:56:07,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:56:07,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 90 [2024-11-20 21:56:07,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:56:08,459 INFO L124 PetriNetUnfolderBase]: 2832/5604 cut-off events. [2024-11-20 21:56:08,460 INFO L125 PetriNetUnfolderBase]: For 1537/1537 co-relation queries the response was YES. [2024-11-20 21:56:08,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11468 conditions, 5604 events. 2832/5604 cut-off events. For 1537/1537 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 42226 event pairs, 606 based on Foata normal form. 152/5472 useless extension candidates. Maximal degree in co-relation 10659. Up to 3344 conditions per place. [2024-11-20 21:56:08,493 INFO L140 encePairwiseOnDemand]: 85/90 looper letters, 93 selfloop transitions, 6 changer transitions 0/136 dead transitions. [2024-11-20 21:56:08,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 136 transitions, 580 flow [2024-11-20 21:56:08,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 21:56:08,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 21:56:08,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 231 transitions. [2024-11-20 21:56:08,496 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6416666666666667 [2024-11-20 21:56:08,496 INFO L175 Difference]: Start difference. First operand has 90 places, 82 transitions, 230 flow. Second operand 4 states and 231 transitions. [2024-11-20 21:56:08,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 136 transitions, 580 flow [2024-11-20 21:56:08,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 136 transitions, 576 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-20 21:56:08,510 INFO L231 Difference]: Finished difference. Result has 92 places, 82 transitions, 242 flow [2024-11-20 21:56:08,510 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=242, PETRI_PLACES=92, PETRI_TRANSITIONS=82} [2024-11-20 21:56:08,511 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 13 predicate places. [2024-11-20 21:56:08,512 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 82 transitions, 242 flow [2024-11-20 21:56:08,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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) [2024-11-20 21:56:08,513 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:56:08,513 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2024-11-20 21:56:08,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 21:56:08,513 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-20 21:56:08,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:56:08,514 INFO L85 PathProgramCache]: Analyzing trace with hash -148663854, now seen corresponding path program 1 times [2024-11-20 21:56:08,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:56:08,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675114513] [2024-11-20 21:56:08,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:56:08,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:56:08,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 21:56:08,534 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 21:56:08,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 21:56:08,554 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 21:56:08,555 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-20 21:56:08,556 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-11-20 21:56:08,557 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-11-20 21:56:08,557 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-11-20 21:56:08,557 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-11-20 21:56:08,557 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-11-20 21:56:08,558 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-11-20 21:56:08,558 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-11-20 21:56:08,558 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-11-20 21:56:08,562 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-11-20 21:56:08,562 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-11-20 21:56:08,562 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-11-20 21:56:08,562 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-11-20 21:56:08,562 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-11-20 21:56:08,563 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-11-20 21:56:08,563 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-11-20 21:56:08,563 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-11-20 21:56:08,563 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-11-20 21:56:08,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 21:56:08,563 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-20 21:56:08,564 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-20 21:56:08,564 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-20 21:56:08,603 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-20 21:56:08,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 123 transitions, 273 flow [2024-11-20 21:56:08,627 INFO L124 PetriNetUnfolderBase]: 34/216 cut-off events. [2024-11-20 21:56:08,628 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-20 21:56:08,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 216 events. 34/216 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 876 event pairs, 1 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 148. Up to 12 conditions per place. [2024-11-20 21:56:08,630 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 123 transitions, 273 flow [2024-11-20 21:56:08,632 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 123 transitions, 273 flow [2024-11-20 21:56:08,633 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 21:56:08,633 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;@2d4f9c2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 21:56:08,633 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-20 21:56:08,636 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 21:56:08,636 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-20 21:56:08,636 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 21:56:08,636 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:56:08,636 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-20 21:56:08,637 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 21:56:08,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:56:08,637 INFO L85 PathProgramCache]: Analyzing trace with hash 561346485, now seen corresponding path program 1 times [2024-11-20 21:56:08,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:56:08,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958357115] [2024-11-20 21:56:08,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:56:08,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:56:08,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:56:08,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:56:08,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:56:08,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958357115] [2024-11-20 21:56:08,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958357115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:56:08,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:56:08,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 21:56:08,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283957947] [2024-11-20 21:56:08,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:56:08,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:56:08,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:56:08,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:56:08,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:56:08,685 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 123 [2024-11-20 21:56:08,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 123 transitions, 273 flow. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 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) [2024-11-20 21:56:08,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:56:08,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 123 [2024-11-20 21:56:08,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:56:17,760 INFO L124 PetriNetUnfolderBase]: 61547/112464 cut-off events. [2024-11-20 21:56:17,760 INFO L125 PetriNetUnfolderBase]: For 1911/1911 co-relation queries the response was YES. [2024-11-20 21:56:17,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199239 conditions, 112464 events. 61547/112464 cut-off events. For 1911/1911 co-relation queries the response was YES. Maximal size of possible extension queue 2793. Compared 1176490 event pairs, 39796 based on Foata normal form. 24272/125138 useless extension candidates. Maximal degree in co-relation 13323. Up to 85613 conditions per place. [2024-11-20 21:56:18,587 INFO L140 encePairwiseOnDemand]: 97/123 looper letters, 74 selfloop transitions, 3 changer transitions 0/128 dead transitions. [2024-11-20 21:56:18,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 128 transitions, 437 flow [2024-11-20 21:56:18,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 21:56:18,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 21:56:18,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 316 transitions. [2024-11-20 21:56:18,590 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6422764227642277 [2024-11-20 21:56:18,591 INFO L175 Difference]: Start difference. First operand has 107 places, 123 transitions, 273 flow. Second operand 4 states and 316 transitions. [2024-11-20 21:56:18,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 128 transitions, 437 flow [2024-11-20 21:56:18,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 128 transitions, 437 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 21:56:18,597 INFO L231 Difference]: Finished difference. Result has 112 places, 105 transitions, 257 flow [2024-11-20 21:56:18,598 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=257, PETRI_PLACES=112, PETRI_TRANSITIONS=105} [2024-11-20 21:56:18,599 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, 5 predicate places. [2024-11-20 21:56:18,600 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 105 transitions, 257 flow [2024-11-20 21:56:18,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 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) [2024-11-20 21:56:18,600 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:56:18,600 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:56:18,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 21:56:18,601 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 21:56:18,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:56:18,601 INFO L85 PathProgramCache]: Analyzing trace with hash -685101395, now seen corresponding path program 1 times [2024-11-20 21:56:18,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:56:18,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303420192] [2024-11-20 21:56:18,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:56:18,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:56:18,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:56:18,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:56:18,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:56:18,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303420192] [2024-11-20 21:56:18,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303420192] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:56:18,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:56:18,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 21:56:18,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430709021] [2024-11-20 21:56:18,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:56:18,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 21:56:18,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:56:18,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 21:56:18,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 21:56:18,790 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 123 [2024-11-20 21:56:18,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 105 transitions, 257 flow. Second operand has 5 states, 5 states have (on average 53.4) internal successors, (267), 5 states have internal predecessors, (267), 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) [2024-11-20 21:56:18,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:56:18,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 123 [2024-11-20 21:56:18,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:56:26,086 INFO L124 PetriNetUnfolderBase]: 56914/100530 cut-off events. [2024-11-20 21:56:26,087 INFO L125 PetriNetUnfolderBase]: For 6449/10968 co-relation queries the response was YES. [2024-11-20 21:56:26,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185868 conditions, 100530 events. 56914/100530 cut-off events. For 6449/10968 co-relation queries the response was YES. Maximal size of possible extension queue 2634. Compared 1002853 event pairs, 23513 based on Foata normal form. 1507/93986 useless extension candidates. Maximal degree in co-relation 185766. Up to 73664 conditions per place. [2024-11-20 21:56:27,066 INFO L140 encePairwiseOnDemand]: 116/123 looper letters, 121 selfloop transitions, 8 changer transitions 0/182 dead transitions. [2024-11-20 21:56:27,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 182 transitions, 724 flow [2024-11-20 21:56:27,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 21:56:27,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 21:56:27,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 390 transitions. [2024-11-20 21:56:27,082 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2024-11-20 21:56:27,082 INFO L175 Difference]: Start difference. First operand has 112 places, 105 transitions, 257 flow. Second operand 5 states and 390 transitions. [2024-11-20 21:56:27,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 182 transitions, 724 flow [2024-11-20 21:56:27,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 182 transitions, 720 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 21:56:27,105 INFO L231 Difference]: Finished difference. Result has 118 places, 112 transitions, 316 flow [2024-11-20 21:56:27,105 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=316, PETRI_PLACES=118, PETRI_TRANSITIONS=112} [2024-11-20 21:56:27,106 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, 11 predicate places. [2024-11-20 21:56:27,107 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 112 transitions, 316 flow [2024-11-20 21:56:27,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.4) internal successors, (267), 5 states have internal predecessors, (267), 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) [2024-11-20 21:56:27,110 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:56:27,110 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-20 21:56:27,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 21:56:27,114 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 21:56:27,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:56:27,115 INFO L85 PathProgramCache]: Analyzing trace with hash -445943734, now seen corresponding path program 1 times [2024-11-20 21:56:27,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:56:27,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341620274] [2024-11-20 21:56:27,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:56:27,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:56:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:56:27,217 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:56:27,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:56:27,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341620274] [2024-11-20 21:56:27,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341620274] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 21:56:27,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993211915] [2024-11-20 21:56:27,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:56:27,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 21:56:27,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 21:56:27,220 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) [2024-11-20 21:56:27,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 21:56:27,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:56:27,302 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 21:56:27,303 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 21:56:27,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:56:27,338 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 21:56:27,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993211915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:56:27,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 21:56:27,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-20 21:56:27,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008871018] [2024-11-20 21:56:27,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:56:27,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 21:56:27,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:56:27,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 21:56:27,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-20 21:56:27,349 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 123 [2024-11-20 21:56:27,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 112 transitions, 316 flow. Second operand has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 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) [2024-11-20 21:56:27,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:56:27,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 123 [2024-11-20 21:56:27,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:56:35,410 INFO L124 PetriNetUnfolderBase]: 63223/106250 cut-off events. [2024-11-20 21:56:35,411 INFO L125 PetriNetUnfolderBase]: For 25251/25251 co-relation queries the response was YES. [2024-11-20 21:56:35,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220213 conditions, 106250 events. 63223/106250 cut-off events. For 25251/25251 co-relation queries the response was YES. Maximal size of possible extension queue 2490. Compared 1020395 event pairs, 12473 based on Foata normal form. 2136/100220 useless extension candidates. Maximal degree in co-relation 191728. Up to 51546 conditions per place. [2024-11-20 21:56:36,117 INFO L140 encePairwiseOnDemand]: 118/123 looper letters, 157 selfloop transitions, 6 changer transitions 0/214 dead transitions. [2024-11-20 21:56:36,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 214 transitions, 930 flow [2024-11-20 21:56:36,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 21:56:36,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 21:56:36,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 449 transitions. [2024-11-20 21:56:36,120 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6084010840108401 [2024-11-20 21:56:36,120 INFO L175 Difference]: Start difference. First operand has 118 places, 112 transitions, 316 flow. Second operand 6 states and 449 transitions. [2024-11-20 21:56:36,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 214 transitions, 930 flow [2024-11-20 21:56:36,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 214 transitions, 930 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 21:56:36,145 INFO L231 Difference]: Finished difference. Result has 122 places, 111 transitions, 324 flow [2024-11-20 21:56:36,146 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=324, PETRI_PLACES=122, PETRI_TRANSITIONS=111} [2024-11-20 21:56:36,146 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, 15 predicate places. [2024-11-20 21:56:36,146 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 111 transitions, 324 flow [2024-11-20 21:56:36,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 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) [2024-11-20 21:56:36,147 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:56:36,147 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-20 21:56:36,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 21:56:36,348 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,SelfDestructingSolverStorable9 [2024-11-20 21:56:36,348 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 21:56:36,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:56:36,349 INFO L85 PathProgramCache]: Analyzing trace with hash -939353300, now seen corresponding path program 1 times [2024-11-20 21:56:36,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:56:36,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657366956] [2024-11-20 21:56:36,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:56:36,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:56:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:56:36,399 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 21:56:36,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:56:36,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657366956] [2024-11-20 21:56:36,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657366956] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:56:36,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:56:36,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 21:56:36,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574677015] [2024-11-20 21:56:36,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:56:36,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 21:56:36,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:56:36,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 21:56:36,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 21:56:36,407 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 123 [2024-11-20 21:56:36,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 111 transitions, 324 flow. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 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) [2024-11-20 21:56:36,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:56:36,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 123 [2024-11-20 21:56:36,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:56:43,756 INFO L124 PetriNetUnfolderBase]: 57576/96993 cut-off events. [2024-11-20 21:56:43,757 INFO L125 PetriNetUnfolderBase]: For 32533/32533 co-relation queries the response was YES. [2024-11-20 21:56:43,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206057 conditions, 96993 events. 57576/96993 cut-off events. For 32533/32533 co-relation queries the response was YES. Maximal size of possible extension queue 2373. Compared 918943 event pairs, 7368 based on Foata normal form. 2120/94166 useless extension candidates. Maximal degree in co-relation 179179. Up to 59346 conditions per place. [2024-11-20 21:56:44,263 INFO L140 encePairwiseOnDemand]: 118/123 looper letters, 134 selfloop transitions, 6 changer transitions 0/191 dead transitions. [2024-11-20 21:56:44,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 191 transitions, 834 flow [2024-11-20 21:56:44,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 21:56:44,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 21:56:44,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 322 transitions. [2024-11-20 21:56:44,265 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6544715447154471 [2024-11-20 21:56:44,265 INFO L175 Difference]: Start difference. First operand has 122 places, 111 transitions, 324 flow. Second operand 4 states and 322 transitions. [2024-11-20 21:56:44,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 191 transitions, 834 flow [2024-11-20 21:56:44,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 191 transitions, 818 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-20 21:56:44,322 INFO L231 Difference]: Finished difference. Result has 120 places, 111 transitions, 324 flow [2024-11-20 21:56:44,322 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=324, PETRI_PLACES=120, PETRI_TRANSITIONS=111} [2024-11-20 21:56:44,323 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, 13 predicate places. [2024-11-20 21:56:44,323 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 111 transitions, 324 flow [2024-11-20 21:56:44,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 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) [2024-11-20 21:56:44,323 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:56:44,324 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:56:44,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-20 21:56:44,324 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 21:56:44,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:56:44,325 INFO L85 PathProgramCache]: Analyzing trace with hash 928754234, now seen corresponding path program 1 times [2024-11-20 21:56:44,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:56:44,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019528236] [2024-11-20 21:56:44,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:56:44,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:56:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:56:44,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 21:56:44,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:56:44,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019528236] [2024-11-20 21:56:44,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019528236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:56:44,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:56:44,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 21:56:44,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916443958] [2024-11-20 21:56:44,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:56:44,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 21:56:44,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:56:44,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 21:56:44,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 21:56:44,507 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 123 [2024-11-20 21:56:44,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 111 transitions, 324 flow. Second operand has 5 states, 5 states have (on average 53.8) internal successors, (269), 5 states have internal predecessors, (269), 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) [2024-11-20 21:56:44,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:56:44,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 123 [2024-11-20 21:56:44,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 21:56:52,437 INFO L124 PetriNetUnfolderBase]: 63541/113241 cut-off events. [2024-11-20 21:56:52,437 INFO L125 PetriNetUnfolderBase]: For 42314/42332 co-relation queries the response was YES. [2024-11-20 21:56:52,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232325 conditions, 113241 events. 63541/113241 cut-off events. For 42314/42332 co-relation queries the response was YES. Maximal size of possible extension queue 3057. Compared 1159618 event pairs, 26964 based on Foata normal form. 3128/108714 useless extension candidates. Maximal degree in co-relation 202719. Up to 82762 conditions per place. [2024-11-20 21:56:53,099 INFO L140 encePairwiseOnDemand]: 116/123 looper letters, 122 selfloop transitions, 11 changer transitions 0/184 dead transitions. [2024-11-20 21:56:53,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 184 transitions, 829 flow [2024-11-20 21:56:53,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 21:56:53,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 21:56:53,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 389 transitions. [2024-11-20 21:56:53,101 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6325203252032521 [2024-11-20 21:56:53,101 INFO L175 Difference]: Start difference. First operand has 120 places, 111 transitions, 324 flow. Second operand 5 states and 389 transitions. [2024-11-20 21:56:53,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 184 transitions, 829 flow [2024-11-20 21:56:53,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 184 transitions, 814 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 21:56:53,129 INFO L231 Difference]: Finished difference. Result has 125 places, 116 transitions, 389 flow [2024-11-20 21:56:53,130 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=389, PETRI_PLACES=125, PETRI_TRANSITIONS=116} [2024-11-20 21:56:53,130 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, 18 predicate places. [2024-11-20 21:56:53,130 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 116 transitions, 389 flow [2024-11-20 21:56:53,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.8) internal successors, (269), 5 states have internal predecessors, (269), 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) [2024-11-20 21:56:53,131 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 21:56:53,131 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:56:53,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-20 21:56:53,131 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-20 21:56:53,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:56:53,132 INFO L85 PathProgramCache]: Analyzing trace with hash -489216723, now seen corresponding path program 1 times [2024-11-20 21:56:53,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:56:53,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770110315] [2024-11-20 21:56:53,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:56:53,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:56:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 21:56:53,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 21:56:53,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 21:56:53,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770110315] [2024-11-20 21:56:53,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770110315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 21:56:53,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 21:56:53,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 21:56:53,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393727767] [2024-11-20 21:56:53,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 21:56:53,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 21:56:53,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 21:56:53,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 21:56:53,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 21:56:53,406 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 123 [2024-11-20 21:56:53,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 116 transitions, 389 flow. Second operand has 6 states, 6 states have (on average 51.833333333333336) internal successors, (311), 6 states have internal predecessors, (311), 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) [2024-11-20 21:56:53,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 21:56:53,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 123 [2024-11-20 21:56:53,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand