./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-15 00:02:12,563 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 00:02:12,648 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-15 00:02:12,653 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 00:02:12,655 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 00:02:12,677 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 00:02:12,680 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 00:02:12,680 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 00:02:12,680 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 00:02:12,680 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 00:02:12,681 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 00:02:12,681 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 00:02:12,681 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 00:02:12,682 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 00:02:12,682 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 00:02:12,682 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 00:02:12,685 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 00:02:12,685 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 00:02:12,685 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 00:02:12,685 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 00:02:12,686 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 00:02:12,688 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 00:02:12,688 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 00:02:12,689 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 00:02:12,690 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 00:02:12,690 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-15 00:02:12,690 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-15 00:02:12,690 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 00:02:12,691 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 00:02:12,691 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 00:02:12,691 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 00:02:12,691 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 00:02:12,691 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 00:02:12,692 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 00:02:12,692 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:02:12,692 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 00:02:12,693 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 00:02:12,693 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 00:02:12,693 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 00:02:12,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 00:02:12,693 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 00:02:12,694 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 00:02:12,694 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 00:02:12,694 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 00:02:12,694 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 [2024-10-15 00:02:12,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 00:02:12,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 00:02:12,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 00:02:12,960 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 00:02:12,960 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 00:02:12,961 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2024-10-15 00:02:14,489 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 00:02:14,719 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 00:02:14,720 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2024-10-15 00:02:14,729 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5df1525f/046f4ac5fca84b96b39e208b0cf47a6f/FLAGb4b529309 [2024-10-15 00:02:14,743 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5df1525f/046f4ac5fca84b96b39e208b0cf47a6f [2024-10-15 00:02:14,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 00:02:14,746 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 00:02:14,750 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 00:02:14,750 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 00:02:14,754 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 00:02:14,755 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:02:14" (1/1) ... [2024-10-15 00:02:14,756 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a7a494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:14, skipping insertion in model container [2024-10-15 00:02:14,756 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:02:14" (1/1) ... [2024-10-15 00:02:14,780 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 00:02:15,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:02:15,045 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 00:02:15,109 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:02:15,147 INFO L204 MainTranslator]: Completed translation [2024-10-15 00:02:15,148 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:15 WrapperNode [2024-10-15 00:02:15,148 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 00:02:15,149 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 00:02:15,149 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 00:02:15,149 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 00:02:15,158 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:15" (1/1) ... [2024-10-15 00:02:15,176 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:15" (1/1) ... [2024-10-15 00:02:15,217 INFO L138 Inliner]: procedures = 24, calls = 49, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 349 [2024-10-15 00:02:15,218 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 00:02:15,218 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 00:02:15,218 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 00:02:15,218 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 00:02:15,227 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:15" (1/1) ... [2024-10-15 00:02:15,227 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:15" (1/1) ... [2024-10-15 00:02:15,232 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:15" (1/1) ... [2024-10-15 00:02:15,252 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-15 00:02:15,252 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:15" (1/1) ... [2024-10-15 00:02:15,252 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:15" (1/1) ... [2024-10-15 00:02:15,267 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:15" (1/1) ... [2024-10-15 00:02:15,270 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:15" (1/1) ... [2024-10-15 00:02:15,275 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:15" (1/1) ... [2024-10-15 00:02:15,280 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:15" (1/1) ... [2024-10-15 00:02:15,282 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 00:02:15,283 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 00:02:15,287 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 00:02:15,287 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 00:02:15,288 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:15" (1/1) ... [2024-10-15 00:02:15,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:02:15,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:15,328 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-15 00:02:15,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-15 00:02:15,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 00:02:15,381 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-15 00:02:15,381 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-15 00:02:15,381 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-15 00:02:15,381 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-15 00:02:15,382 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-15 00:02:15,382 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-15 00:02:15,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 00:02:15,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-15 00:02:15,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-15 00:02:15,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-15 00:02:15,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-15 00:02:15,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-15 00:02:15,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-15 00:02:15,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 00:02:15,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 00:02:15,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-15 00:02:15,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-15 00:02:15,386 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-15 00:02:15,501 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 00:02:15,503 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 00:02:15,928 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-15 00:02:15,928 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 00:02:16,381 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 00:02:16,381 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-15 00:02:16,382 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:02:16 BoogieIcfgContainer [2024-10-15 00:02:16,382 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 00:02:16,390 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 00:02:16,390 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 00:02:16,393 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 00:02:16,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:02:14" (1/3) ... [2024-10-15 00:02:16,395 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e23a525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:02:16, skipping insertion in model container [2024-10-15 00:02:16,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:15" (2/3) ... [2024-10-15 00:02:16,395 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e23a525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:02:16, skipping insertion in model container [2024-10-15 00:02:16,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:02:16" (3/3) ... [2024-10-15 00:02:16,397 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2024-10-15 00:02:16,414 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 00:02:16,415 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-10-15 00:02:16,415 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-15 00:02:16,508 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-15 00:02:16,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 92 transitions, 205 flow [2024-10-15 00:02:16,596 INFO L124 PetriNetUnfolderBase]: 10/89 cut-off events. [2024-10-15 00:02:16,597 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-15 00:02:16,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 89 events. 10/89 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 340 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 69. Up to 3 conditions per place. [2024-10-15 00:02:16,602 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 92 transitions, 205 flow [2024-10-15 00:02:16,606 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 87 transitions, 189 flow [2024-10-15 00:02:16,618 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 00:02:16,626 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;@6993adfc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 00:02:16,626 INFO L334 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-10-15 00:02:16,629 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-15 00:02:16,629 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-15 00:02:16,630 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-15 00:02:16,630 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:16,630 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-15 00:02:16,631 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-15 00:02:16,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:16,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1057236, now seen corresponding path program 1 times [2024-10-15 00:02:16,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:16,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238161314] [2024-10-15 00:02:16,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:16,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:16,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:16,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:16,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238161314] [2024-10-15 00:02:16,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238161314] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:16,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:02:16,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:02:16,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014089957] [2024-10-15 00:02:16,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:16,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:02:16,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:16,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:02:16,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:02:16,903 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 92 [2024-10-15 00:02:16,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 87 transitions, 189 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:16,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:16,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 92 [2024-10-15 00:02:16,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:18,408 INFO L124 PetriNetUnfolderBase]: 9250/15264 cut-off events. [2024-10-15 00:02:18,409 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2024-10-15 00:02:18,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28354 conditions, 15264 events. 9250/15264 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 922. Compared 118718 event pairs, 8468 based on Foata normal form. 738/9533 useless extension candidates. Maximal degree in co-relation 27581. Up to 12592 conditions per place. [2024-10-15 00:02:18,569 INFO L140 encePairwiseOnDemand]: 68/92 looper letters, 58 selfloop transitions, 10 changer transitions 0/88 dead transitions. [2024-10-15 00:02:18,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 88 transitions, 327 flow [2024-10-15 00:02:18,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:02:18,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:02:18,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 174 transitions. [2024-10-15 00:02:18,583 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47282608695652173 [2024-10-15 00:02:18,585 INFO L175 Difference]: Start difference. First operand has 87 places, 87 transitions, 189 flow. Second operand 4 states and 174 transitions. [2024-10-15 00:02:18,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 88 transitions, 327 flow [2024-10-15 00:02:18,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 88 transitions, 318 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-15 00:02:18,605 INFO L231 Difference]: Finished difference. Result has 82 places, 88 transitions, 252 flow [2024-10-15 00:02:18,607 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=252, PETRI_PLACES=82, PETRI_TRANSITIONS=88} [2024-10-15 00:02:18,611 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, -5 predicate places. [2024-10-15 00:02:18,612 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 88 transitions, 252 flow [2024-10-15 00:02:18,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:18,612 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:18,612 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-15 00:02:18,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 00:02:18,613 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-15 00:02:18,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:18,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1432422099, now seen corresponding path program 1 times [2024-10-15 00:02:18,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:18,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222656857] [2024-10-15 00:02:18,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:18,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:18,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:18,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:18,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222656857] [2024-10-15 00:02:18,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222656857] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:18,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747631243] [2024-10-15 00:02:18,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:18,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:18,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:18,734 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:18,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 00:02:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:18,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:02:18,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:18,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:18,889 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:02:18,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747631243] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:18,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:02:18,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-15 00:02:18,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973815434] [2024-10-15 00:02:18,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:18,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-15 00:02:18,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:18,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-15 00:02:18,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-15 00:02:18,913 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 92 [2024-10-15 00:02:18,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 88 transitions, 252 flow. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:18,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:18,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 92 [2024-10-15 00:02:18,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:20,671 INFO L124 PetriNetUnfolderBase]: 9250/15261 cut-off events. [2024-10-15 00:02:20,671 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2024-10-15 00:02:20,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28252 conditions, 15261 events. 9250/15261 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 922. Compared 118576 event pairs, 8468 based on Foata normal form. 3/8800 useless extension candidates. Maximal degree in co-relation 28179. Up to 12577 conditions per place. [2024-10-15 00:02:21,031 INFO L140 encePairwiseOnDemand]: 79/92 looper letters, 48 selfloop transitions, 17 changer transitions 0/85 dead transitions. [2024-10-15 00:02:21,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 85 transitions, 370 flow [2024-10-15 00:02:21,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-15 00:02:21,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-15 00:02:21,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 206 transitions. [2024-10-15 00:02:21,034 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37318840579710144 [2024-10-15 00:02:21,035 INFO L175 Difference]: Start difference. First operand has 82 places, 88 transitions, 252 flow. Second operand 6 states and 206 transitions. [2024-10-15 00:02:21,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 85 transitions, 370 flow [2024-10-15 00:02:21,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 85 transitions, 370 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-15 00:02:21,037 INFO L231 Difference]: Finished difference. Result has 84 places, 85 transitions, 274 flow [2024-10-15 00:02:21,038 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=274, PETRI_PLACES=84, PETRI_TRANSITIONS=85} [2024-10-15 00:02:21,039 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, -3 predicate places. [2024-10-15 00:02:21,039 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 85 transitions, 274 flow [2024-10-15 00:02:21,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:21,039 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:21,040 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-15 00:02:21,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-15 00:02:21,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:21,244 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-15 00:02:21,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:21,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1455413192, now seen corresponding path program 1 times [2024-10-15 00:02:21,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:21,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271418875] [2024-10-15 00:02:21,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:21,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:21,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:21,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:21,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271418875] [2024-10-15 00:02:21,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271418875] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:21,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802966351] [2024-10-15 00:02:21,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:21,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:21,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:21,336 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:21,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 00:02:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:21,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:02:21,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:21,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:21,469 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:21,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:21,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802966351] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:21,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:21,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-15 00:02:21,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856243358] [2024-10-15 00:02:21,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:21,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-15 00:02:21,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:21,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-15 00:02:21,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-15 00:02:21,560 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 92 [2024-10-15 00:02:21,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 85 transitions, 274 flow. Second operand has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:21,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:21,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 92 [2024-10-15 00:02:21,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:23,203 INFO L124 PetriNetUnfolderBase]: 9259/15297 cut-off events. [2024-10-15 00:02:23,203 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2024-10-15 00:02:23,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28393 conditions, 15297 events. 9259/15297 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 922. Compared 118952 event pairs, 8468 based on Foata normal form. 9/8842 useless extension candidates. Maximal degree in co-relation 28181. Up to 12592 conditions per place. [2024-10-15 00:02:23,269 INFO L140 encePairwiseOnDemand]: 79/92 looper letters, 55 selfloop transitions, 37 changer transitions 0/112 dead transitions. [2024-10-15 00:02:23,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 112 transitions, 632 flow [2024-10-15 00:02:23,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:02:23,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-15 00:02:23,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 331 transitions. [2024-10-15 00:02:23,275 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35978260869565215 [2024-10-15 00:02:23,276 INFO L175 Difference]: Start difference. First operand has 84 places, 85 transitions, 274 flow. Second operand 10 states and 331 transitions. [2024-10-15 00:02:23,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 112 transitions, 632 flow [2024-10-15 00:02:23,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 112 transitions, 549 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-10-15 00:02:23,279 INFO L231 Difference]: Finished difference. Result has 91 places, 112 transitions, 489 flow [2024-10-15 00:02:23,279 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=489, PETRI_PLACES=91, PETRI_TRANSITIONS=112} [2024-10-15 00:02:23,280 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 4 predicate places. [2024-10-15 00:02:23,280 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 112 transitions, 489 flow [2024-10-15 00:02:23,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:23,280 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:23,280 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:23,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-15 00:02:23,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-15 00:02:23,482 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-15 00:02:23,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:23,483 INFO L85 PathProgramCache]: Analyzing trace with hash 2087349364, now seen corresponding path program 1 times [2024-10-15 00:02:23,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:23,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581236408] [2024-10-15 00:02:23,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:23,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:23,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:23,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:23,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581236408] [2024-10-15 00:02:23,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581236408] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:23,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:02:23,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:02:23,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883070619] [2024-10-15 00:02:23,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:23,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:02:23,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:23,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:02:23,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:02:23,665 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 92 [2024-10-15 00:02:23,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 112 transitions, 489 flow. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:23,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:23,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 92 [2024-10-15 00:02:23,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:25,439 INFO L124 PetriNetUnfolderBase]: 9487/15753 cut-off events. [2024-10-15 00:02:25,439 INFO L125 PetriNetUnfolderBase]: For 275/275 co-relation queries the response was YES. [2024-10-15 00:02:25,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29341 conditions, 15753 events. 9487/15753 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 922. Compared 122271 event pairs, 8675 based on Foata normal form. 109/9457 useless extension candidates. Maximal degree in co-relation 29183. Up to 12618 conditions per place. [2024-10-15 00:02:25,567 INFO L140 encePairwiseOnDemand]: 80/92 looper letters, 126 selfloop transitions, 10 changer transitions 1/160 dead transitions. [2024-10-15 00:02:25,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 160 transitions, 1015 flow [2024-10-15 00:02:25,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 00:02:25,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-15 00:02:25,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 236 transitions. [2024-10-15 00:02:25,569 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5130434782608696 [2024-10-15 00:02:25,569 INFO L175 Difference]: Start difference. First operand has 91 places, 112 transitions, 489 flow. Second operand 5 states and 236 transitions. [2024-10-15 00:02:25,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 160 transitions, 1015 flow [2024-10-15 00:02:25,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 160 transitions, 955 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-10-15 00:02:25,575 INFO L231 Difference]: Finished difference. Result has 95 places, 119 transitions, 554 flow [2024-10-15 00:02:25,575 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=554, PETRI_PLACES=95, PETRI_TRANSITIONS=119} [2024-10-15 00:02:25,576 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 8 predicate places. [2024-10-15 00:02:25,576 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 119 transitions, 554 flow [2024-10-15 00:02:25,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:25,577 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:25,577 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:25,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-15 00:02:25,577 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-15 00:02:25,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:25,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1121202475, now seen corresponding path program 1 times [2024-10-15 00:02:25,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:25,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940352975] [2024-10-15 00:02:25,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:25,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:25,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:25,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:25,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:25,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940352975] [2024-10-15 00:02:25,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940352975] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:25,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472480361] [2024-10-15 00:02:25,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:25,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:25,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:25,830 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:25,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 00:02:25,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:25,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-15 00:02:25,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:25,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:02:25,946 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:02:25,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472480361] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:25,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:02:25,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-10-15 00:02:25,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725138084] [2024-10-15 00:02:25,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:25,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:02:25,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:25,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:02:25,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-15 00:02:25,948 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 92 [2024-10-15 00:02:25,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 119 transitions, 554 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 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) [2024-10-15 00:02:25,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:25,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 92 [2024-10-15 00:02:25,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:27,087 INFO L124 PetriNetUnfolderBase]: 8079/13391 cut-off events. [2024-10-15 00:02:27,088 INFO L125 PetriNetUnfolderBase]: For 975/975 co-relation queries the response was YES. [2024-10-15 00:02:27,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25747 conditions, 13391 events. 8079/13391 cut-off events. For 975/975 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 100114 event pairs, 7346 based on Foata normal form. 0/8281 useless extension candidates. Maximal degree in co-relation 25591. Up to 11060 conditions per place. [2024-10-15 00:02:27,165 INFO L140 encePairwiseOnDemand]: 89/92 looper letters, 93 selfloop transitions, 1 changer transitions 0/117 dead transitions. [2024-10-15 00:02:27,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 117 transitions, 734 flow [2024-10-15 00:02:27,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:02:27,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:02:27,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2024-10-15 00:02:27,169 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5072463768115942 [2024-10-15 00:02:27,169 INFO L175 Difference]: Start difference. First operand has 95 places, 119 transitions, 554 flow. Second operand 3 states and 140 transitions. [2024-10-15 00:02:27,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 117 transitions, 734 flow [2024-10-15 00:02:27,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 117 transitions, 730 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-15 00:02:27,178 INFO L231 Difference]: Finished difference. Result has 94 places, 117 transitions, 544 flow [2024-10-15 00:02:27,178 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=544, PETRI_PLACES=94, PETRI_TRANSITIONS=117} [2024-10-15 00:02:27,183 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 7 predicate places. [2024-10-15 00:02:27,183 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 117 transitions, 544 flow [2024-10-15 00:02:27,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 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) [2024-10-15 00:02:27,183 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:27,183 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:27,198 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-15 00:02:27,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:27,384 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-15 00:02:27,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:27,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1380648729, now seen corresponding path program 1 times [2024-10-15 00:02:27,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:27,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712608578] [2024-10-15 00:02:27,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:27,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:27,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:27,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:27,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:27,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712608578] [2024-10-15 00:02:27,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712608578] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:27,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:02:27,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:02:27,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939443347] [2024-10-15 00:02:27,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:27,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:02:27,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:27,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:02:27,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:02:27,449 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 92 [2024-10-15 00:02:27,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 117 transitions, 544 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:27,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:27,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 92 [2024-10-15 00:02:27,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:28,779 INFO L124 PetriNetUnfolderBase]: 7412/11897 cut-off events. [2024-10-15 00:02:28,780 INFO L125 PetriNetUnfolderBase]: For 1052/1052 co-relation queries the response was YES. [2024-10-15 00:02:28,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23900 conditions, 11897 events. 7412/11897 cut-off events. For 1052/1052 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 81871 event pairs, 2706 based on Foata normal form. 192/7543 useless extension candidates. Maximal degree in co-relation 23884. Up to 8609 conditions per place. [2024-10-15 00:02:28,828 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 117 selfloop transitions, 2 changer transitions 1/143 dead transitions. [2024-10-15 00:02:28,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 143 transitions, 845 flow [2024-10-15 00:02:28,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:02:28,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:02:28,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 166 transitions. [2024-10-15 00:02:28,829 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6014492753623188 [2024-10-15 00:02:28,829 INFO L175 Difference]: Start difference. First operand has 94 places, 117 transitions, 544 flow. Second operand 3 states and 166 transitions. [2024-10-15 00:02:28,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 143 transitions, 845 flow [2024-10-15 00:02:28,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 143 transitions, 844 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:02:28,833 INFO L231 Difference]: Finished difference. Result has 96 places, 117 transitions, 548 flow [2024-10-15 00:02:28,833 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=548, PETRI_PLACES=96, PETRI_TRANSITIONS=117} [2024-10-15 00:02:28,834 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 9 predicate places. [2024-10-15 00:02:28,834 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 117 transitions, 548 flow [2024-10-15 00:02:28,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:28,834 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:28,834 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:28,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-15 00:02:28,835 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-15 00:02:28,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:28,835 INFO L85 PathProgramCache]: Analyzing trace with hash 217816679, now seen corresponding path program 1 times [2024-10-15 00:02:28,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:28,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815097437] [2024-10-15 00:02:28,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:28,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:28,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:28,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:02:28,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:28,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815097437] [2024-10-15 00:02:28,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815097437] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:28,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:02:28,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:02:28,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81114241] [2024-10-15 00:02:28,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:28,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:02:28,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:28,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:02:28,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:02:28,883 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 92 [2024-10-15 00:02:28,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 117 transitions, 548 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:28,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:28,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 92 [2024-10-15 00:02:28,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:30,757 INFO L124 PetriNetUnfolderBase]: 13317/21454 cut-off events. [2024-10-15 00:02:30,758 INFO L125 PetriNetUnfolderBase]: For 2742/2754 co-relation queries the response was YES. [2024-10-15 00:02:30,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44274 conditions, 21454 events. 13317/21454 cut-off events. For 2742/2754 co-relation queries the response was YES. Maximal size of possible extension queue 886. Compared 160832 event pairs, 9148 based on Foata normal form. 0/14350 useless extension candidates. Maximal degree in co-relation 44256. Up to 9992 conditions per place. [2024-10-15 00:02:30,885 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 130 selfloop transitions, 2 changer transitions 0/155 dead transitions. [2024-10-15 00:02:30,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 155 transitions, 908 flow [2024-10-15 00:02:30,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:02:30,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:02:30,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2024-10-15 00:02:30,887 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6413043478260869 [2024-10-15 00:02:30,887 INFO L175 Difference]: Start difference. First operand has 96 places, 117 transitions, 548 flow. Second operand 3 states and 177 transitions. [2024-10-15 00:02:30,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 155 transitions, 908 flow [2024-10-15 00:02:30,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 155 transitions, 905 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:02:30,891 INFO L231 Difference]: Finished difference. Result has 98 places, 118 transitions, 560 flow [2024-10-15 00:02:30,891 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=560, PETRI_PLACES=98, PETRI_TRANSITIONS=118} [2024-10-15 00:02:30,892 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 11 predicate places. [2024-10-15 00:02:30,892 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 118 transitions, 560 flow [2024-10-15 00:02:30,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:30,893 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:30,893 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:30,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-15 00:02:30,893 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-15 00:02:30,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:30,894 INFO L85 PathProgramCache]: Analyzing trace with hash 217816677, now seen corresponding path program 1 times [2024-10-15 00:02:30,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:30,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228178752] [2024-10-15 00:02:30,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:30,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:30,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:30,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:02:30,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:30,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228178752] [2024-10-15 00:02:30,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228178752] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:30,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:02:30,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:02:30,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887000440] [2024-10-15 00:02:30,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:30,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:02:30,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:30,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:02:30,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:02:30,938 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 92 [2024-10-15 00:02:30,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 118 transitions, 560 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:30,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:30,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 92 [2024-10-15 00:02:30,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:32,764 INFO L124 PetriNetUnfolderBase]: 12833/20569 cut-off events. [2024-10-15 00:02:32,764 INFO L125 PetriNetUnfolderBase]: For 3687/3717 co-relation queries the response was YES. [2024-10-15 00:02:32,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43543 conditions, 20569 events. 12833/20569 cut-off events. For 3687/3717 co-relation queries the response was YES. Maximal size of possible extension queue 817. Compared 150496 event pairs, 6590 based on Foata normal form. 0/14467 useless extension candidates. Maximal degree in co-relation 43524. Up to 17452 conditions per place. [2024-10-15 00:02:32,858 INFO L140 encePairwiseOnDemand]: 86/92 looper letters, 97 selfloop transitions, 9 changer transitions 0/129 dead transitions. [2024-10-15 00:02:32,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 129 transitions, 806 flow [2024-10-15 00:02:32,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:02:32,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:02:32,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2024-10-15 00:02:32,859 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2024-10-15 00:02:32,859 INFO L175 Difference]: Start difference. First operand has 98 places, 118 transitions, 560 flow. Second operand 3 states and 150 transitions. [2024-10-15 00:02:32,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 129 transitions, 806 flow [2024-10-15 00:02:32,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 129 transitions, 803 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:02:32,864 INFO L231 Difference]: Finished difference. Result has 99 places, 120 transitions, 601 flow [2024-10-15 00:02:32,864 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=601, PETRI_PLACES=99, PETRI_TRANSITIONS=120} [2024-10-15 00:02:32,864 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 12 predicate places. [2024-10-15 00:02:32,865 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 120 transitions, 601 flow [2024-10-15 00:02:32,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:32,865 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:32,865 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:32,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-15 00:02:32,865 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-15 00:02:32,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:32,866 INFO L85 PathProgramCache]: Analyzing trace with hash 217816678, now seen corresponding path program 1 times [2024-10-15 00:02:32,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:32,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053791531] [2024-10-15 00:02:32,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:32,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:32,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:32,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:32,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053791531] [2024-10-15 00:02:32,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053791531] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:32,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737948037] [2024-10-15 00:02:32,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:32,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:32,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:32,966 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:32,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-15 00:02:33,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:33,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-15 00:02:33,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:33,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:02:33,087 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:02:33,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737948037] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:33,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:02:33,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2024-10-15 00:02:33,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069110713] [2024-10-15 00:02:33,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:33,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:02:33,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:33,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:02:33,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-15 00:02:33,091 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 92 [2024-10-15 00:02:33,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 120 transitions, 601 flow. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:33,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:33,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 92 [2024-10-15 00:02:33,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:35,060 INFO L124 PetriNetUnfolderBase]: 13695/21447 cut-off events. [2024-10-15 00:02:35,061 INFO L125 PetriNetUnfolderBase]: For 8556/8640 co-relation queries the response was YES. [2024-10-15 00:02:35,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48843 conditions, 21447 events. 13695/21447 cut-off events. For 8556/8640 co-relation queries the response was YES. Maximal size of possible extension queue 855. Compared 153527 event pairs, 6720 based on Foata normal form. 386/15855 useless extension candidates. Maximal degree in co-relation 48822. Up to 10848 conditions per place. [2024-10-15 00:02:35,163 INFO L140 encePairwiseOnDemand]: 84/92 looper letters, 109 selfloop transitions, 13 changer transitions 0/145 dead transitions. [2024-10-15 00:02:35,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 145 transitions, 918 flow [2024-10-15 00:02:35,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:02:35,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:02:35,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 191 transitions. [2024-10-15 00:02:35,165 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5190217391304348 [2024-10-15 00:02:35,166 INFO L175 Difference]: Start difference. First operand has 99 places, 120 transitions, 601 flow. Second operand 4 states and 191 transitions. [2024-10-15 00:02:35,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 145 transitions, 918 flow [2024-10-15 00:02:35,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 145 transitions, 909 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:02:35,170 INFO L231 Difference]: Finished difference. Result has 102 places, 121 transitions, 657 flow [2024-10-15 00:02:35,170 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=657, PETRI_PLACES=102, PETRI_TRANSITIONS=121} [2024-10-15 00:02:35,171 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 15 predicate places. [2024-10-15 00:02:35,171 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 121 transitions, 657 flow [2024-10-15 00:02:35,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:35,171 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:35,171 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:35,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-15 00:02:35,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:35,372 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-15 00:02:35,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:35,372 INFO L85 PathProgramCache]: Analyzing trace with hash -39202132, now seen corresponding path program 1 times [2024-10-15 00:02:35,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:35,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027922605] [2024-10-15 00:02:35,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:35,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:35,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:02:35,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:35,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027922605] [2024-10-15 00:02:35,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027922605] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:35,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:02:35,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:02:35,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59068058] [2024-10-15 00:02:35,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:35,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:02:35,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:35,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:02:35,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:02:35,417 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 92 [2024-10-15 00:02:35,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 121 transitions, 657 flow. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:35,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:35,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 92 [2024-10-15 00:02:35,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:36,596 INFO L124 PetriNetUnfolderBase]: 8456/13564 cut-off events. [2024-10-15 00:02:36,597 INFO L125 PetriNetUnfolderBase]: For 10891/10945 co-relation queries the response was YES. [2024-10-15 00:02:36,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33130 conditions, 13564 events. 8456/13564 cut-off events. For 10891/10945 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 93305 event pairs, 4540 based on Foata normal form. 58/9824 useless extension candidates. Maximal degree in co-relation 33106. Up to 11149 conditions per place. [2024-10-15 00:02:36,671 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 109 selfloop transitions, 4 changer transitions 0/136 dead transitions. [2024-10-15 00:02:36,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 136 transitions, 926 flow [2024-10-15 00:02:36,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:02:36,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:02:36,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 154 transitions. [2024-10-15 00:02:36,673 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5579710144927537 [2024-10-15 00:02:36,673 INFO L175 Difference]: Start difference. First operand has 102 places, 121 transitions, 657 flow. Second operand 3 states and 154 transitions. [2024-10-15 00:02:36,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 136 transitions, 926 flow [2024-10-15 00:02:36,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 136 transitions, 925 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:02:36,680 INFO L231 Difference]: Finished difference. Result has 104 places, 121 transitions, 676 flow [2024-10-15 00:02:36,680 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=676, PETRI_PLACES=104, PETRI_TRANSITIONS=121} [2024-10-15 00:02:36,682 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 17 predicate places. [2024-10-15 00:02:36,682 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 121 transitions, 676 flow [2024-10-15 00:02:36,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:36,682 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:36,682 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:36,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-15 00:02:36,682 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-15 00:02:36,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:36,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1837615395, now seen corresponding path program 1 times [2024-10-15 00:02:36,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:36,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168866813] [2024-10-15 00:02:36,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:36,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:36,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:36,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:02:36,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:36,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168866813] [2024-10-15 00:02:36,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168866813] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:36,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:02:36,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:02:36,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025676474] [2024-10-15 00:02:36,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:36,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:02:36,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:36,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:02:36,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:02:36,784 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 92 [2024-10-15 00:02:36,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 121 transitions, 676 flow. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:36,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:36,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 92 [2024-10-15 00:02:36,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:38,514 INFO L124 PetriNetUnfolderBase]: 11595/18556 cut-off events. [2024-10-15 00:02:38,514 INFO L125 PetriNetUnfolderBase]: For 19115/19211 co-relation queries the response was YES. [2024-10-15 00:02:38,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47898 conditions, 18556 events. 11595/18556 cut-off events. For 19115/19211 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 130861 event pairs, 9495 based on Foata normal form. 305/13964 useless extension candidates. Maximal degree in co-relation 47872. Up to 11655 conditions per place. [2024-10-15 00:02:38,621 INFO L140 encePairwiseOnDemand]: 81/92 looper letters, 122 selfloop transitions, 12 changer transitions 0/157 dead transitions. [2024-10-15 00:02:38,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 157 transitions, 1121 flow [2024-10-15 00:02:38,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:02:38,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:02:38,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 205 transitions. [2024-10-15 00:02:38,622 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5570652173913043 [2024-10-15 00:02:38,622 INFO L175 Difference]: Start difference. First operand has 104 places, 121 transitions, 676 flow. Second operand 4 states and 205 transitions. [2024-10-15 00:02:38,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 157 transitions, 1121 flow [2024-10-15 00:02:38,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 157 transitions, 1114 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:02:38,629 INFO L231 Difference]: Finished difference. Result has 107 places, 121 transitions, 713 flow [2024-10-15 00:02:38,630 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=713, PETRI_PLACES=107, PETRI_TRANSITIONS=121} [2024-10-15 00:02:38,630 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 20 predicate places. [2024-10-15 00:02:38,630 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 121 transitions, 713 flow [2024-10-15 00:02:38,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:38,630 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:38,630 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-15 00:02:38,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-15 00:02:38,631 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-15 00:02:38,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:38,631 INFO L85 PathProgramCache]: Analyzing trace with hash 625763751, now seen corresponding path program 2 times [2024-10-15 00:02:38,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:38,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641874163] [2024-10-15 00:02:38,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:38,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:38,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:38,733 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:38,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:38,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641874163] [2024-10-15 00:02:38,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641874163] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:38,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081541331] [2024-10-15 00:02:38,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:02:38,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:38,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:38,735 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:38,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-15 00:02:38,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-15 00:02:38,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:02:38,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-15 00:02:38,801 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:38,850 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-15 00:02:38,851 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:38,873 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-15 00:02:38,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081541331] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:38,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:38,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-15 00:02:38,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363319150] [2024-10-15 00:02:38,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:38,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-15 00:02:38,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:38,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-15 00:02:38,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-15 00:02:38,914 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 92 [2024-10-15 00:02:38,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 121 transitions, 713 flow. Second operand has 14 states, 14 states have (on average 24.142857142857142) internal successors, (338), 14 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:38,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:38,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 92 [2024-10-15 00:02:38,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:41,333 INFO L124 PetriNetUnfolderBase]: 11627/18620 cut-off events. [2024-10-15 00:02:41,333 INFO L125 PetriNetUnfolderBase]: For 19611/19713 co-relation queries the response was YES. [2024-10-15 00:02:41,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49810 conditions, 18620 events. 11627/18620 cut-off events. For 19611/19713 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 131955 event pairs, 9511 based on Foata normal form. 6/13724 useless extension candidates. Maximal degree in co-relation 49783. Up to 16307 conditions per place. [2024-10-15 00:02:41,510 INFO L140 encePairwiseOnDemand]: 79/92 looper letters, 54 selfloop transitions, 56 changer transitions 0/130 dead transitions. [2024-10-15 00:02:41,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 130 transitions, 1004 flow [2024-10-15 00:02:41,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-15 00:02:41,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-15 00:02:41,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 652 transitions. [2024-10-15 00:02:41,513 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29528985507246375 [2024-10-15 00:02:41,513 INFO L175 Difference]: Start difference. First operand has 107 places, 121 transitions, 713 flow. Second operand 24 states and 652 transitions. [2024-10-15 00:02:41,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 130 transitions, 1004 flow [2024-10-15 00:02:41,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 130 transitions, 991 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:02:41,524 INFO L231 Difference]: Finished difference. Result has 130 places, 130 transitions, 908 flow [2024-10-15 00:02:41,525 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=908, PETRI_PLACES=130, PETRI_TRANSITIONS=130} [2024-10-15 00:02:41,525 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 43 predicate places. [2024-10-15 00:02:41,525 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 130 transitions, 908 flow [2024-10-15 00:02:41,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.142857142857142) internal successors, (338), 14 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:41,526 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:41,526 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:41,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-15 00:02:41,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-15 00:02:41,731 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-15 00:02:41,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:41,732 INFO L85 PathProgramCache]: Analyzing trace with hash 572674798, now seen corresponding path program 1 times [2024-10-15 00:02:41,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:41,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583649604] [2024-10-15 00:02:41,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:41,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:41,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:41,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:02:41,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:41,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583649604] [2024-10-15 00:02:41,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583649604] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:41,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:02:41,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:02:41,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983559405] [2024-10-15 00:02:41,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:41,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:02:41,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:41,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:02:41,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:02:41,832 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 92 [2024-10-15 00:02:41,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 130 transitions, 908 flow. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:41,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:41,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 92 [2024-10-15 00:02:41,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:44,661 INFO L124 PetriNetUnfolderBase]: 13119/21437 cut-off events. [2024-10-15 00:02:44,661 INFO L125 PetriNetUnfolderBase]: For 23439/23535 co-relation queries the response was YES. [2024-10-15 00:02:44,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57802 conditions, 21437 events. 13119/21437 cut-off events. For 23439/23535 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 155434 event pairs, 10766 based on Foata normal form. 352/16527 useless extension candidates. Maximal degree in co-relation 57772. Up to 16364 conditions per place. [2024-10-15 00:02:44,870 INFO L140 encePairwiseOnDemand]: 85/92 looper letters, 141 selfloop transitions, 9 changer transitions 7/179 dead transitions. [2024-10-15 00:02:44,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 179 transitions, 1594 flow [2024-10-15 00:02:44,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:02:44,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:02:44,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 199 transitions. [2024-10-15 00:02:44,872 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5407608695652174 [2024-10-15 00:02:44,872 INFO L175 Difference]: Start difference. First operand has 130 places, 130 transitions, 908 flow. Second operand 4 states and 199 transitions. [2024-10-15 00:02:44,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 179 transitions, 1594 flow [2024-10-15 00:02:44,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 179 transitions, 1439 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-10-15 00:02:44,888 INFO L231 Difference]: Finished difference. Result has 124 places, 130 transitions, 809 flow [2024-10-15 00:02:44,888 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=809, PETRI_PLACES=124, PETRI_TRANSITIONS=130} [2024-10-15 00:02:44,889 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 37 predicate places. [2024-10-15 00:02:44,890 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 130 transitions, 809 flow [2024-10-15 00:02:44,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:44,890 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:44,890 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:44,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-15 00:02:44,890 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-15 00:02:44,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:44,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1224080899, now seen corresponding path program 1 times [2024-10-15 00:02:44,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:44,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057873525] [2024-10-15 00:02:44,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:44,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:45,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 00:02:45,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:45,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057873525] [2024-10-15 00:02:45,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057873525] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:45,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:02:45,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-15 00:02:45,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298792043] [2024-10-15 00:02:45,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:45,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:02:45,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:45,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:02:45,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:02:45,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 92 [2024-10-15 00:02:45,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 130 transitions, 809 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:45,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:45,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 92 [2024-10-15 00:02:45,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:48,070 INFO L124 PetriNetUnfolderBase]: 18894/30436 cut-off events. [2024-10-15 00:02:48,070 INFO L125 PetriNetUnfolderBase]: For 28296/28308 co-relation queries the response was YES. [2024-10-15 00:02:48,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83675 conditions, 30436 events. 18894/30436 cut-off events. For 28296/28308 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 220687 event pairs, 6869 based on Foata normal form. 466/23596 useless extension candidates. Maximal degree in co-relation 83646. Up to 10486 conditions per place. [2024-10-15 00:02:48,303 INFO L140 encePairwiseOnDemand]: 87/92 looper letters, 177 selfloop transitions, 6 changer transitions 0/202 dead transitions. [2024-10-15 00:02:48,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 202 transitions, 1472 flow [2024-10-15 00:02:48,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 00:02:48,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-15 00:02:48,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 253 transitions. [2024-10-15 00:02:48,304 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-10-15 00:02:48,304 INFO L175 Difference]: Start difference. First operand has 124 places, 130 transitions, 809 flow. Second operand 5 states and 253 transitions. [2024-10-15 00:02:48,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 202 transitions, 1472 flow [2024-10-15 00:02:48,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 202 transitions, 1440 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-15 00:02:48,371 INFO L231 Difference]: Finished difference. Result has 129 places, 135 transitions, 824 flow [2024-10-15 00:02:48,372 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=824, PETRI_PLACES=129, PETRI_TRANSITIONS=135} [2024-10-15 00:02:48,372 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 42 predicate places. [2024-10-15 00:02:48,372 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 135 transitions, 824 flow [2024-10-15 00:02:48,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:48,373 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:48,373 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-10-15 00:02:48,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-15 00:02:48,373 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-15 00:02:48,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:48,373 INFO L85 PathProgramCache]: Analyzing trace with hash -2127304649, now seen corresponding path program 1 times [2024-10-15 00:02:48,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:48,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949522745] [2024-10-15 00:02:48,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:48,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:48,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:48,524 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:48,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:48,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949522745] [2024-10-15 00:02:48,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949522745] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:48,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696364726] [2024-10-15 00:02:48,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:48,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:48,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:48,527 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:48,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-15 00:02:48,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:48,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-15 00:02:48,601 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:48,635 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:48,636 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:48,805 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:48,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696364726] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:48,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:48,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-10-15 00:02:48,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560482264] [2024-10-15 00:02:48,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:48,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-15 00:02:48,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:48,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-15 00:02:48,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-10-15 00:02:48,869 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 92 [2024-10-15 00:02:48,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 135 transitions, 824 flow. Second operand has 28 states, 28 states have (on average 24.071428571428573) internal successors, (674), 28 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:48,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:48,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 92 [2024-10-15 00:02:48,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:51,748 INFO L124 PetriNetUnfolderBase]: 16229/26706 cut-off events. [2024-10-15 00:02:51,749 INFO L125 PetriNetUnfolderBase]: For 31071/31209 co-relation queries the response was YES. [2024-10-15 00:02:51,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76742 conditions, 26706 events. 16229/26706 cut-off events. For 31071/31209 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 199171 event pairs, 13523 based on Foata normal form. 84/20284 useless extension candidates. Maximal degree in co-relation 76710. Up to 23171 conditions per place. [2024-10-15 00:02:51,947 INFO L140 encePairwiseOnDemand]: 80/92 looper letters, 59 selfloop transitions, 123 changer transitions 0/205 dead transitions. [2024-10-15 00:02:51,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 205 transitions, 1783 flow [2024-10-15 00:02:51,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-15 00:02:51,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-15 00:02:51,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 771 transitions. [2024-10-15 00:02:51,950 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32232441471571904 [2024-10-15 00:02:51,950 INFO L175 Difference]: Start difference. First operand has 129 places, 135 transitions, 824 flow. Second operand 26 states and 771 transitions. [2024-10-15 00:02:51,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 205 transitions, 1783 flow [2024-10-15 00:02:51,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 205 transitions, 1783 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-15 00:02:51,973 INFO L231 Difference]: Finished difference. Result has 161 places, 205 transitions, 1749 flow [2024-10-15 00:02:51,973 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1749, PETRI_PLACES=161, PETRI_TRANSITIONS=205} [2024-10-15 00:02:51,974 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 74 predicate places. [2024-10-15 00:02:51,975 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 205 transitions, 1749 flow [2024-10-15 00:02:51,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 24.071428571428573) internal successors, (674), 28 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:51,975 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:51,975 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:51,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-15 00:02:52,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-15 00:02:52,177 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-15 00:02:52,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:52,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1892108512, now seen corresponding path program 1 times [2024-10-15 00:02:52,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:52,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083878485] [2024-10-15 00:02:52,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:52,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:52,217 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:02:52,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:52,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083878485] [2024-10-15 00:02:52,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083878485] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:52,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:02:52,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:02:52,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159905764] [2024-10-15 00:02:52,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:52,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:02:52,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:52,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:02:52,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:02:52,219 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 92 [2024-10-15 00:02:52,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 205 transitions, 1749 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:52,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:52,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 92 [2024-10-15 00:02:52,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:54,927 INFO L124 PetriNetUnfolderBase]: 15030/24867 cut-off events. [2024-10-15 00:02:54,928 INFO L125 PetriNetUnfolderBase]: For 29505/29643 co-relation queries the response was YES. [2024-10-15 00:02:55,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71200 conditions, 24867 events. 15030/24867 cut-off events. For 29505/29643 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 184316 event pairs, 7538 based on Foata normal form. 42/19315 useless extension candidates. Maximal degree in co-relation 71159. Up to 21246 conditions per place. [2024-10-15 00:02:55,114 INFO L140 encePairwiseOnDemand]: 90/92 looper letters, 185 selfloop transitions, 1 changer transitions 0/211 dead transitions. [2024-10-15 00:02:55,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 211 transitions, 2130 flow [2024-10-15 00:02:55,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:02:55,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:02:55,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2024-10-15 00:02:55,115 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5181159420289855 [2024-10-15 00:02:55,116 INFO L175 Difference]: Start difference. First operand has 161 places, 205 transitions, 1749 flow. Second operand 3 states and 143 transitions. [2024-10-15 00:02:55,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 211 transitions, 2130 flow [2024-10-15 00:02:55,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 211 transitions, 1789 flow, removed 92 selfloop flow, removed 12 redundant places. [2024-10-15 00:02:55,138 INFO L231 Difference]: Finished difference. Result has 150 places, 204 transitions, 1402 flow [2024-10-15 00:02:55,138 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1400, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1402, PETRI_PLACES=150, PETRI_TRANSITIONS=204} [2024-10-15 00:02:55,138 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 63 predicate places. [2024-10-15 00:02:55,138 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 204 transitions, 1402 flow [2024-10-15 00:02:55,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:55,139 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:55,139 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:55,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-15 00:02:55,139 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-15 00:02:55,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:55,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1892108513, now seen corresponding path program 1 times [2024-10-15 00:02:55,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:55,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320085551] [2024-10-15 00:02:55,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:55,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:55,202 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:02:55,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:55,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320085551] [2024-10-15 00:02:55,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320085551] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:55,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391421519] [2024-10-15 00:02:55,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:55,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:55,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:55,204 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:55,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-15 00:02:55,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:55,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-15 00:02:55,288 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:55,365 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:55,366 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:55,471 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:55,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391421519] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:55,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:55,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 15 [2024-10-15 00:02:55,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015005446] [2024-10-15 00:02:55,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:55,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-15 00:02:55,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:55,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-15 00:02:55,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-10-15 00:02:55,538 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 92 [2024-10-15 00:02:55,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 204 transitions, 1402 flow. Second operand has 15 states, 15 states have (on average 25.4) internal successors, (381), 15 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:55,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:55,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 92 [2024-10-15 00:02:55,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:01,786 INFO L124 PetriNetUnfolderBase]: 30244/49570 cut-off events. [2024-10-15 00:03:01,787 INFO L125 PetriNetUnfolderBase]: For 65400/65566 co-relation queries the response was YES. [2024-10-15 00:03:02,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140557 conditions, 49570 events. 30244/49570 cut-off events. For 65400/65566 co-relation queries the response was YES. Maximal size of possible extension queue 1141. Compared 398271 event pairs, 13670 based on Foata normal form. 890/39550 useless extension candidates. Maximal degree in co-relation 140518. Up to 18015 conditions per place. [2024-10-15 00:03:02,289 INFO L140 encePairwiseOnDemand]: 77/92 looper letters, 379 selfloop transitions, 95 changer transitions 13/510 dead transitions. [2024-10-15 00:03:02,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 510 transitions, 4248 flow [2024-10-15 00:03:02,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-15 00:03:02,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-15 00:03:02,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 623 transitions. [2024-10-15 00:03:02,290 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3983375959079284 [2024-10-15 00:03:02,291 INFO L175 Difference]: Start difference. First operand has 150 places, 204 transitions, 1402 flow. Second operand 17 states and 623 transitions. [2024-10-15 00:03:02,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 510 transitions, 4248 flow [2024-10-15 00:03:02,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 510 transitions, 4246 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:03:02,345 INFO L231 Difference]: Finished difference. Result has 175 places, 267 transitions, 2375 flow [2024-10-15 00:03:02,345 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=1401, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2375, PETRI_PLACES=175, PETRI_TRANSITIONS=267} [2024-10-15 00:03:02,350 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 88 predicate places. [2024-10-15 00:03:02,351 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 267 transitions, 2375 flow [2024-10-15 00:03:02,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 25.4) internal successors, (381), 15 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:02,351 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:02,351 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:02,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-15 00:03:02,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:02,553 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2024-10-15 00:03:02,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:02,553 INFO L85 PathProgramCache]: Analyzing trace with hash 363202246, now seen corresponding path program 1 times [2024-10-15 00:03:02,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:02,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342453207] [2024-10-15 00:03:02,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:02,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:02,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:03:02,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:02,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342453207] [2024-10-15 00:03:02,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342453207] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:02,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102040626] [2024-10-15 00:03:02,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:02,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:02,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:02,883 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:03:02,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-15 00:03:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:02,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-15 00:03:02,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:02,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-15 00:03:03,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-10-15 00:03:03,071 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-15 00:03:03,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-15 00:03:03,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-15 00:03:03,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:03,178 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:03,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 00:03:03,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102040626] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:03,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-15 00:03:03,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 8] total 19 [2024-10-15 00:03:03,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92830319] [2024-10-15 00:03:03,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:03:03,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 00:03:03,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:03,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 00:03:03,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2024-10-15 00:03:03,349 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 92 [2024-10-15 00:03:03,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 267 transitions, 2375 flow. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 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) [2024-10-15 00:03:03,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:03,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 92 [2024-10-15 00:03:03,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand