./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/weaver/loop-tiling-eq.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 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-23 01:56:38,288 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 01:56:38,373 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 01:56:38,376 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 01:56:38,376 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 01:56:38,390 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 01:56:38,390 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 01:56:38,390 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 01:56:38,391 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 01:56:38,391 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 01:56:38,391 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 01:56:38,391 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 01:56:38,392 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 01:56:38,392 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 01:56:38,392 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 01:56:38,393 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 01:56:38,393 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 01:56:38,393 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 01:56:38,393 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 01:56:38,394 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 01:56:38,394 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 01:56:38,398 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 01:56:38,399 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 01:56:38,399 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 01:56:38,399 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-23 01:56:38,399 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 01:56:38,399 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 01:56:38,400 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 01:56:38,400 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 01:56:38,400 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 01:56:38,400 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 01:56:38,400 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 01:56:38,400 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 01:56:38,401 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 01:56:38,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:56:38,401 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 01:56:38,401 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 01:56:38,401 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 01:56:38,402 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 01:56:38,402 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 01:56:38,402 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 01:56:38,408 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 01:56:38,408 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 01:56:38,408 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 01:56:38,408 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 [2024-11-23 01:56:38,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 01:56:38,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 01:56:38,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 01:56:38,666 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 01:56:38,667 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 01:56:38,668 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2024-11-23 01:56:40,018 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-23 01:56:40,208 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 01:56:40,209 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2024-11-23 01:56:40,221 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b34fa6f2/fe5568c85f964ec585769d38d66857ea/FLAGe42c9b459 [2024-11-23 01:56:40,237 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b34fa6f2/fe5568c85f964ec585769d38d66857ea [2024-11-23 01:56:40,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 01:56:40,240 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 01:56:40,243 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 01:56:40,243 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 01:56:40,247 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 01:56:40,247 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:56:40" (1/1) ... [2024-11-23 01:56:40,249 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69521c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:40, skipping insertion in model container [2024-11-23 01:56:40,249 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:56:40" (1/1) ... [2024-11-23 01:56:40,269 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 01:56:40,459 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:56:40,469 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 01:56:40,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:56:40,506 INFO L204 MainTranslator]: Completed translation [2024-11-23 01:56:40,506 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:40 WrapperNode [2024-11-23 01:56:40,509 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 01:56:40,510 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 01:56:40,511 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 01:56:40,511 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 01:56:40,516 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:40" (1/1) ... [2024-11-23 01:56:40,523 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:40" (1/1) ... [2024-11-23 01:56:40,543 INFO L138 Inliner]: procedures = 24, calls = 32, calls flagged for inlining = 14, calls inlined = 18, statements flattened = 206 [2024-11-23 01:56:40,543 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 01:56:40,544 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 01:56:40,544 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 01:56:40,544 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 01:56:40,553 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:40" (1/1) ... [2024-11-23 01:56:40,555 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:40" (1/1) ... [2024-11-23 01:56:40,557 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:40" (1/1) ... [2024-11-23 01:56:40,573 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 9, 3]. 64 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 6 writes are split as follows [0, 5, 1]. [2024-11-23 01:56:40,574 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:40" (1/1) ... [2024-11-23 01:56:40,574 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:40" (1/1) ... [2024-11-23 01:56:40,581 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:40" (1/1) ... [2024-11-23 01:56:40,585 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:40" (1/1) ... [2024-11-23 01:56:40,587 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:40" (1/1) ... [2024-11-23 01:56:40,589 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:40" (1/1) ... [2024-11-23 01:56:40,591 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 01:56:40,592 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 01:56:40,592 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 01:56:40,592 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 01:56:40,593 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:40" (1/1) ... [2024-11-23 01:56:40,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:56:40,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:56:40,620 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 01:56:40,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 01:56:40,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-23 01:56:40,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-23 01:56:40,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-23 01:56:40,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 01:56:40,659 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-23 01:56:40,660 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-23 01:56:40,660 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-23 01:56:40,660 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-23 01:56:40,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 01:56:40,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 01:56:40,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 01:56:40,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-23 01:56:40,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-23 01:56:40,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-23 01:56:40,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 01:56:40,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 01:56:40,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-23 01:56:40,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 01:56:40,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 01:56:40,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 01:56:40,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 01:56:40,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 01:56:40,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-23 01:56:40,665 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 01:56:40,752 INFO L238 CfgBuilder]: Building ICFG [2024-11-23 01:56:40,754 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 01:56:41,108 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 01:56:41,108 INFO L287 CfgBuilder]: Performing block encoding [2024-11-23 01:56:41,391 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 01:56:41,392 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-23 01:56:41,393 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:56:41 BoogieIcfgContainer [2024-11-23 01:56:41,393 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 01:56:41,396 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 01:56:41,396 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 01:56:41,399 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 01:56:41,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:56:40" (1/3) ... [2024-11-23 01:56:41,399 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b49523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:56:41, skipping insertion in model container [2024-11-23 01:56:41,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:40" (2/3) ... [2024-11-23 01:56:41,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b49523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:56:41, skipping insertion in model container [2024-11-23 01:56:41,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:56:41" (3/3) ... [2024-11-23 01:56:41,401 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2024-11-23 01:56:41,413 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 01:56:41,413 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2024-11-23 01:56:41,413 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 01:56:41,459 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-23 01:56:41,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 81 transitions, 176 flow [2024-11-23 01:56:41,513 INFO L124 PetriNetUnfolderBase]: 8/79 cut-off events. [2024-11-23 01:56:41,513 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-23 01:56:41,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 79 events. 8/79 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 170 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2024-11-23 01:56:41,518 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 81 transitions, 176 flow [2024-11-23 01:56:41,521 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 78 transitions, 168 flow [2024-11-23 01:56:41,527 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 01:56:41,534 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;@66221cfb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 01:56:41,534 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-11-23 01:56:41,536 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 01:56:41,536 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-23 01:56:41,536 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 01:56:41,536 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:41,537 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-23 01:56:41,537 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:56:41,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:41,540 INFO L85 PathProgramCache]: Analyzing trace with hash 776698, now seen corresponding path program 1 times [2024-11-23 01:56:41,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:41,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657265955] [2024-11-23 01:56:41,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:41,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-23 01:56:41,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1416685772] [2024-11-23 01:56:41,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:41,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:41,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:56:41,622 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:56:41,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 01:56:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:41,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:56:41,673 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:56:41,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:41,763 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:56:41,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:41,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657265955] [2024-11-23 01:56:41,764 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-23 01:56:41,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416685772] [2024-11-23 01:56:41,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416685772] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:56:41,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:56:41,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:56:41,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511704682] [2024-11-23 01:56:41,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:56:41,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:56:41,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:41,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:56:41,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:56:41,824 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 81 [2024-11-23 01:56:41,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 78 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:41,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:41,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 81 [2024-11-23 01:56:41,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:42,024 INFO L124 PetriNetUnfolderBase]: 226/661 cut-off events. [2024-11-23 01:56:42,024 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-11-23 01:56:42,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1100 conditions, 661 events. 226/661 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3866 event pairs, 150 based on Foata normal form. 1/480 useless extension candidates. Maximal degree in co-relation 446. Up to 199 conditions per place. [2024-11-23 01:56:42,030 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 69 selfloop transitions, 4 changer transitions 0/111 dead transitions. [2024-11-23 01:56:42,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 111 transitions, 392 flow [2024-11-23 01:56:42,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 01:56:42,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 01:56:42,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 275 transitions. [2024-11-23 01:56:42,050 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6790123456790124 [2024-11-23 01:56:42,052 INFO L175 Difference]: Start difference. First operand has 77 places, 78 transitions, 168 flow. Second operand 5 states and 275 transitions. [2024-11-23 01:56:42,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 111 transitions, 392 flow [2024-11-23 01:56:42,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 111 transitions, 376 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-23 01:56:42,061 INFO L231 Difference]: Finished difference. Result has 76 places, 77 transitions, 171 flow [2024-11-23 01:56:42,063 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=171, PETRI_PLACES=76, PETRI_TRANSITIONS=77} [2024-11-23 01:56:42,067 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, -1 predicate places. [2024-11-23 01:56:42,068 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 77 transitions, 171 flow [2024-11-23 01:56:42,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:42,068 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:42,068 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-23 01:56:42,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 01:56:42,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 01:56:42,270 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:56:42,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:42,270 INFO L85 PathProgramCache]: Analyzing trace with hash 24076230, now seen corresponding path program 1 times [2024-11-23 01:56:42,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:42,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286109804] [2024-11-23 01:56:42,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:42,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-23 01:56:42,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [979308022] [2024-11-23 01:56:42,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:42,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:42,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:56:42,288 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:56:42,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 01:56:42,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:42,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 01:56:42,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:56:42,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:42,357 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:56:42,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:42,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286109804] [2024-11-23 01:56:42,358 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-23 01:56:42,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979308022] [2024-11-23 01:56:42,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979308022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:56:42,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:56:42,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:56:42,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982417040] [2024-11-23 01:56:42,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:56:42,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:56:42,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:42,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:56:42,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:56:42,374 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 81 [2024-11-23 01:56:42,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 77 transitions, 171 flow. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:42,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:42,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 81 [2024-11-23 01:56:42,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:42,543 INFO L124 PetriNetUnfolderBase]: 226/651 cut-off events. [2024-11-23 01:56:42,543 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-23 01:56:42,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1068 conditions, 651 events. 226/651 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3821 event pairs, 150 based on Foata normal form. 2/475 useless extension candidates. Maximal degree in co-relation 532. Up to 200 conditions per place. [2024-11-23 01:56:42,549 INFO L140 encePairwiseOnDemand]: 74/81 looper letters, 65 selfloop transitions, 4 changer transitions 1/108 dead transitions. [2024-11-23 01:56:42,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 108 transitions, 377 flow [2024-11-23 01:56:42,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 01:56:42,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 01:56:42,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 273 transitions. [2024-11-23 01:56:42,551 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.674074074074074 [2024-11-23 01:56:42,551 INFO L175 Difference]: Start difference. First operand has 76 places, 77 transitions, 171 flow. Second operand 5 states and 273 transitions. [2024-11-23 01:56:42,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 108 transitions, 377 flow [2024-11-23 01:56:42,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 108 transitions, 373 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:56:42,555 INFO L231 Difference]: Finished difference. Result has 79 places, 77 transitions, 182 flow [2024-11-23 01:56:42,555 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=182, PETRI_PLACES=79, PETRI_TRANSITIONS=77} [2024-11-23 01:56:42,556 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 2 predicate places. [2024-11-23 01:56:42,556 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 77 transitions, 182 flow [2024-11-23 01:56:42,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:42,557 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:42,557 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-23 01:56:42,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 01:56:42,757 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,SelfDestructingSolverStorable1 [2024-11-23 01:56:42,759 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:56:42,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:42,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1664522554, now seen corresponding path program 1 times [2024-11-23 01:56:42,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:42,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683363396] [2024-11-23 01:56:42,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:42,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:42,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-23 01:56:42,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1446948771] [2024-11-23 01:56:42,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:42,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:42,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:56:42,773 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) [2024-11-23 01:56:42,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 01:56:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:42,815 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 01:56:42,816 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:56:42,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:42,881 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:56:42,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:42,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683363396] [2024-11-23 01:56:42,881 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-23 01:56:42,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446948771] [2024-11-23 01:56:42,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446948771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:56:42,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:56:42,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:56:42,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548056118] [2024-11-23 01:56:42,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:56:42,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:56:42,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:42,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:56:42,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:56:42,972 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 81 [2024-11-23 01:56:42,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 77 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:42,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:42,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 81 [2024-11-23 01:56:42,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:43,132 INFO L124 PetriNetUnfolderBase]: 226/650 cut-off events. [2024-11-23 01:56:43,133 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-23 01:56:43,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1071 conditions, 650 events. 226/650 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3808 event pairs, 150 based on Foata normal form. 1/474 useless extension candidates. Maximal degree in co-relation 533. Up to 198 conditions per place. [2024-11-23 01:56:43,137 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 64 selfloop transitions, 4 changer transitions 1/107 dead transitions. [2024-11-23 01:56:43,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 107 transitions, 382 flow [2024-11-23 01:56:43,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 01:56:43,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 01:56:43,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 270 transitions. [2024-11-23 01:56:43,141 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-23 01:56:43,141 INFO L175 Difference]: Start difference. First operand has 79 places, 77 transitions, 182 flow. Second operand 5 states and 270 transitions. [2024-11-23 01:56:43,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 107 transitions, 382 flow [2024-11-23 01:56:43,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 107 transitions, 374 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 01:56:43,143 INFO L231 Difference]: Finished difference. Result has 79 places, 76 transitions, 178 flow [2024-11-23 01:56:43,143 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=79, PETRI_TRANSITIONS=76} [2024-11-23 01:56:43,145 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 2 predicate places. [2024-11-23 01:56:43,146 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 76 transitions, 178 flow [2024-11-23 01:56:43,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:43,146 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:43,147 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:56:43,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 01:56:43,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:43,352 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:56:43,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:43,353 INFO L85 PathProgramCache]: Analyzing trace with hash 60592401, now seen corresponding path program 1 times [2024-11-23 01:56:43,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:43,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625692429] [2024-11-23 01:56:43,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:43,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-23 01:56:43,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [227427474] [2024-11-23 01:56:43,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:43,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:43,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:56:43,387 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) [2024-11-23 01:56:43,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 01:56:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:43,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 01:56:43,441 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:56:43,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:43,520 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:56:43,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:43,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625692429] [2024-11-23 01:56:43,520 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-23 01:56:43,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227427474] [2024-11-23 01:56:43,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227427474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:56:43,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:56:43,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 01:56:43,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294134955] [2024-11-23 01:56:43,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:56:43,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:56:43,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:43,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:56:43,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 01:56:43,668 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 81 [2024-11-23 01:56:43,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 76 transitions, 178 flow. Second operand has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:43,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:43,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 81 [2024-11-23 01:56:43,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:43,878 INFO L124 PetriNetUnfolderBase]: 226/649 cut-off events. [2024-11-23 01:56:43,878 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-11-23 01:56:43,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1070 conditions, 649 events. 226/649 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3758 event pairs, 150 based on Foata normal form. 1/473 useless extension candidates. Maximal degree in co-relation 534. Up to 196 conditions per place. [2024-11-23 01:56:43,881 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 63 selfloop transitions, 5 changer transitions 1/106 dead transitions. [2024-11-23 01:56:43,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 106 transitions, 378 flow [2024-11-23 01:56:43,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:56:43,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:56:43,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 304 transitions. [2024-11-23 01:56:43,882 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6255144032921811 [2024-11-23 01:56:43,882 INFO L175 Difference]: Start difference. First operand has 79 places, 76 transitions, 178 flow. Second operand 6 states and 304 transitions. [2024-11-23 01:56:43,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 106 transitions, 378 flow [2024-11-23 01:56:43,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 106 transitions, 371 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 01:56:43,884 INFO L231 Difference]: Finished difference. Result has 80 places, 75 transitions, 177 flow [2024-11-23 01:56:43,884 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=177, PETRI_PLACES=80, PETRI_TRANSITIONS=75} [2024-11-23 01:56:43,885 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 3 predicate places. [2024-11-23 01:56:43,885 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 75 transitions, 177 flow [2024-11-23 01:56:43,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:43,886 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:43,886 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:56:43,894 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 01:56:44,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:44,087 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:56:44,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:44,087 INFO L85 PathProgramCache]: Analyzing trace with hash -3795885, now seen corresponding path program 1 times [2024-11-23 01:56:44,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:44,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710091971] [2024-11-23 01:56:44,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:44,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:44,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:44,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:44,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710091971] [2024-11-23 01:56:44,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710091971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:56:44,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:56:44,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:56:44,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881692638] [2024-11-23 01:56:44,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:56:44,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:56:44,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:44,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:56:44,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:56:44,204 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 81 [2024-11-23 01:56:44,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 75 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:44,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:44,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 81 [2024-11-23 01:56:44,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:44,301 INFO L124 PetriNetUnfolderBase]: 232/673 cut-off events. [2024-11-23 01:56:44,302 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-23 01:56:44,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1124 conditions, 673 events. 232/673 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3942 event pairs, 150 based on Foata normal form. 6/494 useless extension candidates. Maximal degree in co-relation 561. Up to 410 conditions per place. [2024-11-23 01:56:44,304 INFO L140 encePairwiseOnDemand]: 64/81 looper letters, 40 selfloop transitions, 11 changer transitions 0/84 dead transitions. [2024-11-23 01:56:44,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 84 transitions, 297 flow [2024-11-23 01:56:44,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:56:44,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:56:44,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 212 transitions. [2024-11-23 01:56:44,305 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.654320987654321 [2024-11-23 01:56:44,305 INFO L175 Difference]: Start difference. First operand has 80 places, 75 transitions, 177 flow. Second operand 4 states and 212 transitions. [2024-11-23 01:56:44,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 84 transitions, 297 flow [2024-11-23 01:56:44,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 84 transitions, 281 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-23 01:56:44,307 INFO L231 Difference]: Finished difference. Result has 81 places, 84 transitions, 253 flow [2024-11-23 01:56:44,308 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=253, PETRI_PLACES=81, PETRI_TRANSITIONS=84} [2024-11-23 01:56:44,308 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2024-11-23 01:56:44,308 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 84 transitions, 253 flow [2024-11-23 01:56:44,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:44,309 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:44,309 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:56:44,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 01:56:44,309 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:56:44,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:44,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1413294371, now seen corresponding path program 1 times [2024-11-23 01:56:44,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:44,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445620070] [2024-11-23 01:56:44,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:44,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:44,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:44,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:44,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445620070] [2024-11-23 01:56:44,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445620070] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:56:44,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494858658] [2024-11-23 01:56:44,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:44,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:44,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:56:44,465 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) [2024-11-23 01:56:44,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 01:56:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:44,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:56:44,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:56:44,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:44,568 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:56:44,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494858658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:56:44,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:56:44,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-23 01:56:44,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079208790] [2024-11-23 01:56:44,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:56:44,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:56:44,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:44,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:56:44,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:56:44,598 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 81 [2024-11-23 01:56:44,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 84 transitions, 253 flow. Second operand has 6 states, 6 states have (on average 40.166666666666664) internal successors, (241), 6 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:44,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:44,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 81 [2024-11-23 01:56:44,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:44,839 INFO L124 PetriNetUnfolderBase]: 232/667 cut-off events. [2024-11-23 01:56:44,839 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2024-11-23 01:56:44,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1173 conditions, 667 events. 232/667 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3890 event pairs, 150 based on Foata normal form. 6/497 useless extension candidates. Maximal degree in co-relation 1033. Up to 380 conditions per place. [2024-11-23 01:56:44,846 INFO L140 encePairwiseOnDemand]: 67/81 looper letters, 29 selfloop transitions, 19 changer transitions 0/81 dead transitions. [2024-11-23 01:56:44,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 81 transitions, 337 flow [2024-11-23 01:56:44,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:56:44,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:56:44,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 284 transitions. [2024-11-23 01:56:44,847 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5843621399176955 [2024-11-23 01:56:44,847 INFO L175 Difference]: Start difference. First operand has 81 places, 84 transitions, 253 flow. Second operand 6 states and 284 transitions. [2024-11-23 01:56:44,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 81 transitions, 337 flow [2024-11-23 01:56:44,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 81 transitions, 337 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 01:56:44,849 INFO L231 Difference]: Finished difference. Result has 83 places, 81 transitions, 279 flow [2024-11-23 01:56:44,850 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=279, PETRI_PLACES=83, PETRI_TRANSITIONS=81} [2024-11-23 01:56:44,854 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 6 predicate places. [2024-11-23 01:56:44,854 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 81 transitions, 279 flow [2024-11-23 01:56:44,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.166666666666664) internal successors, (241), 6 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:44,855 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:44,855 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:56:44,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 01:56:45,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:45,056 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:56:45,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:45,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1410682909, now seen corresponding path program 1 times [2024-11-23 01:56:45,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:45,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924923763] [2024-11-23 01:56:45,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:45,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:45,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:45,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:45,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:45,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924923763] [2024-11-23 01:56:45,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924923763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:56:45,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:56:45,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 01:56:45,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780278021] [2024-11-23 01:56:45,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:56:45,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 01:56:45,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:45,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 01:56:45,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-23 01:56:45,201 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 81 [2024-11-23 01:56:45,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 81 transitions, 279 flow. Second operand has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:45,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:45,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 81 [2024-11-23 01:56:45,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:45,376 INFO L124 PetriNetUnfolderBase]: 229/653 cut-off events. [2024-11-23 01:56:45,377 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2024-11-23 01:56:45,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1167 conditions, 653 events. 229/653 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3784 event pairs, 150 based on Foata normal form. 1/488 useless extension candidates. Maximal degree in co-relation 1028. Up to 207 conditions per place. [2024-11-23 01:56:45,379 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 72 selfloop transitions, 6 changer transitions 1/113 dead transitions. [2024-11-23 01:56:45,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 113 transitions, 569 flow [2024-11-23 01:56:45,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 01:56:45,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 01:56:45,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 270 transitions. [2024-11-23 01:56:45,381 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-23 01:56:45,381 INFO L175 Difference]: Start difference. First operand has 83 places, 81 transitions, 279 flow. Second operand 5 states and 270 transitions. [2024-11-23 01:56:45,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 113 transitions, 569 flow [2024-11-23 01:56:45,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 113 transitions, 495 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-23 01:56:45,384 INFO L231 Difference]: Finished difference. Result has 84 places, 84 transitions, 269 flow [2024-11-23 01:56:45,384 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=269, PETRI_PLACES=84, PETRI_TRANSITIONS=84} [2024-11-23 01:56:45,385 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 7 predicate places. [2024-11-23 01:56:45,385 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 84 transitions, 269 flow [2024-11-23 01:56:45,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:45,385 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:45,385 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:56:45,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 01:56:45,386 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:56:45,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:45,386 INFO L85 PathProgramCache]: Analyzing trace with hash -862451771, now seen corresponding path program 1 times [2024-11-23 01:56:45,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:45,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903162259] [2024-11-23 01:56:45,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:45,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:45,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:45,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:45,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903162259] [2024-11-23 01:56:45,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903162259] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:56:45,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724689055] [2024-11-23 01:56:45,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:45,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:45,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:56:45,438 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) [2024-11-23 01:56:45,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 01:56:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:45,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:56:45,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:56:45,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:45,519 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:56:45,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:45,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724689055] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:56:45,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:56:45,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-23 01:56:45,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548702629] [2024-11-23 01:56:45,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:56:45,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 01:56:45,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:45,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 01:56:45,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-23 01:56:45,589 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 81 [2024-11-23 01:56:45,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 84 transitions, 269 flow. Second operand has 12 states, 12 states have (on average 40.25) internal successors, (483), 12 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:45,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:45,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 81 [2024-11-23 01:56:45,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:45,775 INFO L124 PetriNetUnfolderBase]: 244/713 cut-off events. [2024-11-23 01:56:45,776 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2024-11-23 01:56:45,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1314 conditions, 713 events. 244/713 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4335 event pairs, 150 based on Foata normal form. 15/551 useless extension candidates. Maximal degree in co-relation 1024. Up to 406 conditions per place. [2024-11-23 01:56:45,778 INFO L140 encePairwiseOnDemand]: 67/81 looper letters, 39 selfloop transitions, 42 changer transitions 0/114 dead transitions. [2024-11-23 01:56:45,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 114 transitions, 581 flow [2024-11-23 01:56:45,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 01:56:45,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 01:56:45,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 473 transitions. [2024-11-23 01:56:45,780 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5839506172839506 [2024-11-23 01:56:45,780 INFO L175 Difference]: Start difference. First operand has 84 places, 84 transitions, 269 flow. Second operand 10 states and 473 transitions. [2024-11-23 01:56:45,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 114 transitions, 581 flow [2024-11-23 01:56:45,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 114 transitions, 576 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:56:45,783 INFO L231 Difference]: Finished difference. Result has 94 places, 114 transitions, 552 flow [2024-11-23 01:56:45,783 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=552, PETRI_PLACES=94, PETRI_TRANSITIONS=114} [2024-11-23 01:56:45,783 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 17 predicate places. [2024-11-23 01:56:45,783 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 114 transitions, 552 flow [2024-11-23 01:56:45,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 40.25) internal successors, (483), 12 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:45,784 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:45,784 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:56:45,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 01:56:45,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:45,989 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:56:45,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:45,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1544502544, now seen corresponding path program 1 times [2024-11-23 01:56:45,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:45,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495800866] [2024-11-23 01:56:45,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:45,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:46,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:46,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:46,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495800866] [2024-11-23 01:56:46,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495800866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:56:46,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:56:46,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:56:46,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756760280] [2024-11-23 01:56:46,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:56:46,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:56:46,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:46,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:56:46,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:56:46,069 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 81 [2024-11-23 01:56:46,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 114 transitions, 552 flow. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:46,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:46,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 81 [2024-11-23 01:56:46,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:46,212 INFO L124 PetriNetUnfolderBase]: 476/1165 cut-off events. [2024-11-23 01:56:46,213 INFO L125 PetriNetUnfolderBase]: For 212/212 co-relation queries the response was YES. [2024-11-23 01:56:46,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2236 conditions, 1165 events. 476/1165 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7243 event pairs, 234 based on Foata normal form. 32/908 useless extension candidates. Maximal degree in co-relation 2074. Up to 645 conditions per place. [2024-11-23 01:56:46,217 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 101 selfloop transitions, 4 changer transitions 0/139 dead transitions. [2024-11-23 01:56:46,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 139 transitions, 814 flow [2024-11-23 01:56:46,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:56:46,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:56:46,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 236 transitions. [2024-11-23 01:56:46,218 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7283950617283951 [2024-11-23 01:56:46,218 INFO L175 Difference]: Start difference. First operand has 94 places, 114 transitions, 552 flow. Second operand 4 states and 236 transitions. [2024-11-23 01:56:46,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 139 transitions, 814 flow [2024-11-23 01:56:46,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 139 transitions, 778 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-23 01:56:46,221 INFO L231 Difference]: Finished difference. Result has 97 places, 117 transitions, 545 flow [2024-11-23 01:56:46,222 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=545, PETRI_PLACES=97, PETRI_TRANSITIONS=117} [2024-11-23 01:56:46,222 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 20 predicate places. [2024-11-23 01:56:46,222 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 117 transitions, 545 flow [2024-11-23 01:56:46,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:46,222 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:46,222 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:56:46,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 01:56:46,223 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:56:46,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:46,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1745485225, now seen corresponding path program 1 times [2024-11-23 01:56:46,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:46,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346615179] [2024-11-23 01:56:46,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:46,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:46,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:46,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:46,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:46,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346615179] [2024-11-23 01:56:46,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346615179] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:56:46,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:56:46,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:56:46,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942600353] [2024-11-23 01:56:46,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:56:46,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:56:46,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:46,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:56:46,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:56:46,281 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 81 [2024-11-23 01:56:46,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 117 transitions, 545 flow. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:46,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:46,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 81 [2024-11-23 01:56:46,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:46,454 INFO L124 PetriNetUnfolderBase]: 382/1090 cut-off events. [2024-11-23 01:56:46,455 INFO L125 PetriNetUnfolderBase]: For 472/480 co-relation queries the response was YES. [2024-11-23 01:56:46,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2382 conditions, 1090 events. 382/1090 cut-off events. For 472/480 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7501 event pairs, 234 based on Foata normal form. 1/871 useless extension candidates. Maximal degree in co-relation 2196. Up to 639 conditions per place. [2024-11-23 01:56:46,460 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 83 selfloop transitions, 18 changer transitions 0/135 dead transitions. [2024-11-23 01:56:46,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 135 transitions, 853 flow [2024-11-23 01:56:46,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:56:46,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:56:46,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2024-11-23 01:56:46,461 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6697530864197531 [2024-11-23 01:56:46,461 INFO L175 Difference]: Start difference. First operand has 97 places, 117 transitions, 545 flow. Second operand 4 states and 217 transitions. [2024-11-23 01:56:46,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 135 transitions, 853 flow [2024-11-23 01:56:46,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 135 transitions, 850 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:56:46,465 INFO L231 Difference]: Finished difference. Result has 101 places, 124 transitions, 650 flow [2024-11-23 01:56:46,465 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=650, PETRI_PLACES=101, PETRI_TRANSITIONS=124} [2024-11-23 01:56:46,466 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 24 predicate places. [2024-11-23 01:56:46,466 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 124 transitions, 650 flow [2024-11-23 01:56:46,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:46,466 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:46,466 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:56:46,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 01:56:46,466 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:56:46,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:46,467 INFO L85 PathProgramCache]: Analyzing trace with hash 291477240, now seen corresponding path program 1 times [2024-11-23 01:56:46,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:46,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52044028] [2024-11-23 01:56:46,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:46,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:46,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 01:56:46,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:46,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52044028] [2024-11-23 01:56:46,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52044028] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:56:46,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:56:46,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 01:56:46,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126805926] [2024-11-23 01:56:46,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:56:46,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 01:56:46,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:46,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 01:56:46,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 01:56:46,553 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 81 [2024-11-23 01:56:46,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 124 transitions, 650 flow. Second operand has 5 states, 5 states have (on average 47.2) internal successors, (236), 5 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:46,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:46,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 81 [2024-11-23 01:56:46,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:46,866 INFO L124 PetriNetUnfolderBase]: 538/1545 cut-off events. [2024-11-23 01:56:46,866 INFO L125 PetriNetUnfolderBase]: For 666/674 co-relation queries the response was YES. [2024-11-23 01:56:46,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3389 conditions, 1545 events. 538/1545 cut-off events. For 666/674 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 10899 event pairs, 294 based on Foata normal form. 32/1289 useless extension candidates. Maximal degree in co-relation 3132. Up to 641 conditions per place. [2024-11-23 01:56:46,872 INFO L140 encePairwiseOnDemand]: 69/81 looper letters, 142 selfloop transitions, 20 changer transitions 0/198 dead transitions. [2024-11-23 01:56:46,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 198 transitions, 1405 flow [2024-11-23 01:56:46,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:56:46,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:56:46,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 355 transitions. [2024-11-23 01:56:46,873 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7304526748971193 [2024-11-23 01:56:46,873 INFO L175 Difference]: Start difference. First operand has 101 places, 124 transitions, 650 flow. Second operand 6 states and 355 transitions. [2024-11-23 01:56:46,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 198 transitions, 1405 flow [2024-11-23 01:56:46,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 198 transitions, 1379 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:56:46,878 INFO L231 Difference]: Finished difference. Result has 108 places, 133 transitions, 779 flow [2024-11-23 01:56:46,879 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=779, PETRI_PLACES=108, PETRI_TRANSITIONS=133} [2024-11-23 01:56:46,879 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 31 predicate places. [2024-11-23 01:56:46,879 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 133 transitions, 779 flow [2024-11-23 01:56:46,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.2) internal successors, (236), 5 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:46,880 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:46,880 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:56:46,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 01:56:46,880 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:56:46,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:46,880 INFO L85 PathProgramCache]: Analyzing trace with hash -398301331, now seen corresponding path program 1 times [2024-11-23 01:56:46,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:46,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775341450] [2024-11-23 01:56:46,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:46,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:46,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:46,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:46,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775341450] [2024-11-23 01:56:46,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775341450] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:56:46,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:56:46,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 01:56:46,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286065408] [2024-11-23 01:56:46,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:56:46,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 01:56:46,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:46,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 01:56:46,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-23 01:56:46,999 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 81 [2024-11-23 01:56:46,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 133 transitions, 779 flow. Second operand has 5 states, 5 states have (on average 41.6) internal successors, (208), 5 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:46,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:46,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 81 [2024-11-23 01:56:46,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:47,212 INFO L124 PetriNetUnfolderBase]: 440/1119 cut-off events. [2024-11-23 01:56:47,235 INFO L125 PetriNetUnfolderBase]: For 889/889 co-relation queries the response was YES. [2024-11-23 01:56:47,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3039 conditions, 1119 events. 440/1119 cut-off events. For 889/889 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 6600 event pairs, 267 based on Foata normal form. 0/1008 useless extension candidates. Maximal degree in co-relation 2769. Up to 624 conditions per place. [2024-11-23 01:56:47,239 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 138 selfloop transitions, 5 changer transitions 13/188 dead transitions. [2024-11-23 01:56:47,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 188 transitions, 1418 flow [2024-11-23 01:56:47,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 01:56:47,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 01:56:47,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 262 transitions. [2024-11-23 01:56:47,241 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6469135802469136 [2024-11-23 01:56:47,241 INFO L175 Difference]: Start difference. First operand has 108 places, 133 transitions, 779 flow. Second operand 5 states and 262 transitions. [2024-11-23 01:56:47,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 188 transitions, 1418 flow [2024-11-23 01:56:47,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 188 transitions, 1414 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-23 01:56:47,246 INFO L231 Difference]: Finished difference. Result has 114 places, 133 transitions, 773 flow [2024-11-23 01:56:47,246 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=773, PETRI_PLACES=114, PETRI_TRANSITIONS=133} [2024-11-23 01:56:47,247 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 37 predicate places. [2024-11-23 01:56:47,248 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 133 transitions, 773 flow [2024-11-23 01:56:47,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.6) internal successors, (208), 5 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:47,249 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:47,249 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:56:47,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 01:56:47,249 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:56:47,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:47,249 INFO L85 PathProgramCache]: Analyzing trace with hash -815446169, now seen corresponding path program 1 times [2024-11-23 01:56:47,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:47,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111449347] [2024-11-23 01:56:47,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:47,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:47,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:47,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:47,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111449347] [2024-11-23 01:56:47,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111449347] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:56:47,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108973967] [2024-11-23 01:56:47,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:47,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:47,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:56:47,345 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) [2024-11-23 01:56:47,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 01:56:47,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:47,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:56:47,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:56:47,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:47,456 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:56:47,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108973967] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:56:47,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:56:47,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-23 01:56:47,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288641927] [2024-11-23 01:56:47,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:56:47,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:56:47,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:47,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:56:47,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:56:47,469 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 81 [2024-11-23 01:56:47,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 133 transitions, 773 flow. Second operand has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:47,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:47,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 81 [2024-11-23 01:56:47,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:47,674 INFO L124 PetriNetUnfolderBase]: 380/1051 cut-off events. [2024-11-23 01:56:47,674 INFO L125 PetriNetUnfolderBase]: For 953/953 co-relation queries the response was YES. [2024-11-23 01:56:47,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2930 conditions, 1051 events. 380/1051 cut-off events. For 953/953 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 6364 event pairs, 242 based on Foata normal form. 2/913 useless extension candidates. Maximal degree in co-relation 2659. Up to 655 conditions per place. [2024-11-23 01:56:47,682 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 84 selfloop transitions, 27 changer transitions 0/145 dead transitions. [2024-11-23 01:56:47,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 145 transitions, 1092 flow [2024-11-23 01:56:47,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:56:47,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:56:47,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 301 transitions. [2024-11-23 01:56:47,684 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6193415637860082 [2024-11-23 01:56:47,684 INFO L175 Difference]: Start difference. First operand has 114 places, 133 transitions, 773 flow. Second operand 6 states and 301 transitions. [2024-11-23 01:56:47,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 145 transitions, 1092 flow [2024-11-23 01:56:47,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 145 transitions, 1065 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 01:56:47,690 INFO L231 Difference]: Finished difference. Result has 115 places, 132 transitions, 800 flow [2024-11-23 01:56:47,691 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=800, PETRI_PLACES=115, PETRI_TRANSITIONS=132} [2024-11-23 01:56:47,691 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 38 predicate places. [2024-11-23 01:56:47,691 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 132 transitions, 800 flow [2024-11-23 01:56:47,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:47,692 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:47,692 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:56:47,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-23 01:56:47,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:47,893 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:56:47,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:47,893 INFO L85 PathProgramCache]: Analyzing trace with hash 490973334, now seen corresponding path program 1 times [2024-11-23 01:56:47,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:47,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768037439] [2024-11-23 01:56:47,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:47,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:47,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:47,975 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:47,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:47,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768037439] [2024-11-23 01:56:47,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768037439] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:56:47,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997229354] [2024-11-23 01:56:47,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:47,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:47,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:56:47,977 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) [2024-11-23 01:56:47,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 01:56:48,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:48,046 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:56:48,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:56:48,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:48,071 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:56:48,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:48,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997229354] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:56:48,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:56:48,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-23 01:56:48,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291596662] [2024-11-23 01:56:48,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:56:48,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 01:56:48,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:48,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 01:56:48,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-23 01:56:48,106 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 81 [2024-11-23 01:56:48,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 132 transitions, 800 flow. Second operand has 12 states, 12 states have (on average 44.916666666666664) internal successors, (539), 12 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:48,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:48,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 81 [2024-11-23 01:56:48,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:48,370 INFO L124 PetriNetUnfolderBase]: 416/1175 cut-off events. [2024-11-23 01:56:48,371 INFO L125 PetriNetUnfolderBase]: For 1201/1201 co-relation queries the response was YES. [2024-11-23 01:56:48,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3521 conditions, 1175 events. 416/1175 cut-off events. For 1201/1201 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 7065 event pairs, 242 based on Foata normal form. 6/1057 useless extension candidates. Maximal degree in co-relation 3014. Up to 699 conditions per place. [2024-11-23 01:56:48,376 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 131 selfloop transitions, 43 changer transitions 0/208 dead transitions. [2024-11-23 01:56:48,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 208 transitions, 1752 flow [2024-11-23 01:56:48,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 01:56:48,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 01:56:48,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 493 transitions. [2024-11-23 01:56:48,378 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.608641975308642 [2024-11-23 01:56:48,378 INFO L175 Difference]: Start difference. First operand has 115 places, 132 transitions, 800 flow. Second operand 10 states and 493 transitions. [2024-11-23 01:56:48,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 208 transitions, 1752 flow [2024-11-23 01:56:48,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 208 transitions, 1637 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-11-23 01:56:48,384 INFO L231 Difference]: Finished difference. Result has 123 places, 156 transitions, 1030 flow [2024-11-23 01:56:48,385 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1030, PETRI_PLACES=123, PETRI_TRANSITIONS=156} [2024-11-23 01:56:48,385 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 46 predicate places. [2024-11-23 01:56:48,385 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 156 transitions, 1030 flow [2024-11-23 01:56:48,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 44.916666666666664) internal successors, (539), 12 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:48,385 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:48,386 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:56:48,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 01:56:48,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-23 01:56:48,586 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:56:48,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:48,587 INFO L85 PathProgramCache]: Analyzing trace with hash 2121039192, now seen corresponding path program 1 times [2024-11-23 01:56:48,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:48,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827156174] [2024-11-23 01:56:48,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:48,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:48,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:48,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:48,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:48,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827156174] [2024-11-23 01:56:48,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827156174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:56:48,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:56:48,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 01:56:48,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41939377] [2024-11-23 01:56:48,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:56:48,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 01:56:48,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:48,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 01:56:48,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-23 01:56:48,703 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 81 [2024-11-23 01:56:48,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 156 transitions, 1030 flow. Second operand has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:48,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:48,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 81 [2024-11-23 01:56:48,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:48,875 INFO L124 PetriNetUnfolderBase]: 414/1173 cut-off events. [2024-11-23 01:56:48,875 INFO L125 PetriNetUnfolderBase]: For 1236/1236 co-relation queries the response was YES. [2024-11-23 01:56:48,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3515 conditions, 1173 events. 414/1173 cut-off events. For 1236/1236 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 6955 event pairs, 242 based on Foata normal form. 2/1053 useless extension candidates. Maximal degree in co-relation 3220. Up to 590 conditions per place. [2024-11-23 01:56:48,882 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 161 selfloop transitions, 10 changer transitions 6/210 dead transitions. [2024-11-23 01:56:48,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 210 transitions, 1730 flow [2024-11-23 01:56:48,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 01:56:48,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 01:56:48,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 269 transitions. [2024-11-23 01:56:48,883 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6641975308641975 [2024-11-23 01:56:48,883 INFO L175 Difference]: Start difference. First operand has 123 places, 156 transitions, 1030 flow. Second operand 5 states and 269 transitions. [2024-11-23 01:56:48,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 210 transitions, 1730 flow [2024-11-23 01:56:48,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 210 transitions, 1700 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-23 01:56:48,891 INFO L231 Difference]: Finished difference. Result has 125 places, 155 transitions, 1013 flow [2024-11-23 01:56:48,891 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=993, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1013, PETRI_PLACES=125, PETRI_TRANSITIONS=155} [2024-11-23 01:56:48,892 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 48 predicate places. [2024-11-23 01:56:48,892 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 155 transitions, 1013 flow [2024-11-23 01:56:48,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:48,892 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:48,892 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1] [2024-11-23 01:56:48,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 01:56:48,893 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:56:48,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:48,893 INFO L85 PathProgramCache]: Analyzing trace with hash 127811983, now seen corresponding path program 2 times [2024-11-23 01:56:48,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:48,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115477023] [2024-11-23 01:56:48,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:56:48,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:48,908 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 01:56:48,909 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:56:48,931 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 01:56:48,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:48,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115477023] [2024-11-23 01:56:48,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115477023] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:56:48,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589542123] [2024-11-23 01:56:48,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:56:48,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:48,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:56:48,935 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:56:48,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 01:56:49,011 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 01:56:49,011 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:56:49,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 01:56:49,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:56:49,836 WARN L873 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= |c_ULTIMATE.start_create_fresh_int_array_~size#1| .cse0) (<= .cse0 2147483647)))) is different from true [2024-11-23 01:56:50,749 WARN L873 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_#t~post26#1| 1) .cse0)))) is different from true [2024-11-23 01:56:50,761 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 8 not checked. [2024-11-23 01:56:50,762 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:56:50,783 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 01:56:50,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589542123] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:56:50,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:56:50,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-23 01:56:50,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115056080] [2024-11-23 01:56:50,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:56:50,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:56:50,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:50,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:56:50,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=9, Unknown=2, NotChecked=10, Total=30 [2024-11-23 01:56:50,785 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 81 [2024-11-23 01:56:50,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 155 transitions, 1013 flow. Second operand has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:50,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:50,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 81 [2024-11-23 01:56:50,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:51,772 INFO L124 PetriNetUnfolderBase]: 414/1289 cut-off events. [2024-11-23 01:56:51,772 INFO L125 PetriNetUnfolderBase]: For 1146/1146 co-relation queries the response was YES. [2024-11-23 01:56:51,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3697 conditions, 1289 events. 414/1289 cut-off events. For 1146/1146 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 8284 event pairs, 242 based on Foata normal form. 2/1123 useless extension candidates. Maximal degree in co-relation 3391. Up to 909 conditions per place. [2024-11-23 01:56:51,784 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 109 selfloop transitions, 16 changer transitions 0/154 dead transitions. [2024-11-23 01:56:51,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 154 transitions, 1253 flow [2024-11-23 01:56:51,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:56:51,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:56:51,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 185 transitions. [2024-11-23 01:56:51,785 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5709876543209876 [2024-11-23 01:56:51,785 INFO L175 Difference]: Start difference. First operand has 125 places, 155 transitions, 1013 flow. Second operand 4 states and 185 transitions. [2024-11-23 01:56:51,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 154 transitions, 1253 flow [2024-11-23 01:56:51,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 154 transitions, 1223 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-23 01:56:51,792 INFO L231 Difference]: Finished difference. Result has 123 places, 154 transitions, 1005 flow [2024-11-23 01:56:51,793 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1005, PETRI_PLACES=123, PETRI_TRANSITIONS=154} [2024-11-23 01:56:51,793 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 46 predicate places. [2024-11-23 01:56:51,793 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 154 transitions, 1005 flow [2024-11-23 01:56:51,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:51,794 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:51,794 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, 1] [2024-11-23 01:56:51,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-23 01:56:51,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-23 01:56:51,995 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:56:51,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:51,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1846403656, now seen corresponding path program 1 times [2024-11-23 01:56:51,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:51,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003990646] [2024-11-23 01:56:51,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:51,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:52,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:52,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:52,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003990646] [2024-11-23 01:56:52,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003990646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:56:52,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:56:52,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 01:56:52,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264265457] [2024-11-23 01:56:52,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:56:52,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 01:56:52,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:52,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 01:56:52,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 01:56:52,127 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 81 [2024-11-23 01:56:52,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 154 transitions, 1005 flow. Second operand has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:52,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:52,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 81 [2024-11-23 01:56:52,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:52,388 INFO L124 PetriNetUnfolderBase]: 625/1834 cut-off events. [2024-11-23 01:56:52,389 INFO L125 PetriNetUnfolderBase]: For 1972/1992 co-relation queries the response was YES. [2024-11-23 01:56:52,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5303 conditions, 1834 events. 625/1834 cut-off events. For 1972/1992 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 11969 event pairs, 338 based on Foata normal form. 2/1625 useless extension candidates. Maximal degree in co-relation 4740. Up to 817 conditions per place. [2024-11-23 01:56:52,400 INFO L140 encePairwiseOnDemand]: 74/81 looper letters, 168 selfloop transitions, 28 changer transitions 1/231 dead transitions. [2024-11-23 01:56:52,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 231 transitions, 1951 flow [2024-11-23 01:56:52,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:56:52,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:56:52,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 340 transitions. [2024-11-23 01:56:52,401 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6995884773662552 [2024-11-23 01:56:52,401 INFO L175 Difference]: Start difference. First operand has 123 places, 154 transitions, 1005 flow. Second operand 6 states and 340 transitions. [2024-11-23 01:56:52,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 231 transitions, 1951 flow [2024-11-23 01:56:52,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 231 transitions, 1919 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 01:56:52,410 INFO L231 Difference]: Finished difference. Result has 127 places, 168 transitions, 1199 flow [2024-11-23 01:56:52,410 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1199, PETRI_PLACES=127, PETRI_TRANSITIONS=168} [2024-11-23 01:56:52,411 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 50 predicate places. [2024-11-23 01:56:52,411 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 168 transitions, 1199 flow [2024-11-23 01:56:52,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:52,411 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:52,411 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, 1] [2024-11-23 01:56:52,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 01:56:52,412 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:56:52,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:52,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1846403689, now seen corresponding path program 1 times [2024-11-23 01:56:52,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:52,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261769131] [2024-11-23 01:56:52,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:52,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:52,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 01:56:52,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:52,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261769131] [2024-11-23 01:56:52,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261769131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:56:52,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:56:52,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:56:52,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483535203] [2024-11-23 01:56:52,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:56:52,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:56:52,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:52,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:56:52,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:56:52,474 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 81 [2024-11-23 01:56:52,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 168 transitions, 1199 flow. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:52,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:52,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 81 [2024-11-23 01:56:52,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:52,814 INFO L124 PetriNetUnfolderBase]: 1091/2688 cut-off events. [2024-11-23 01:56:52,814 INFO L125 PetriNetUnfolderBase]: For 3125/3189 co-relation queries the response was YES. [2024-11-23 01:56:52,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7773 conditions, 2688 events. 1091/2688 cut-off events. For 3125/3189 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 17710 event pairs, 488 based on Foata normal form. 80/2538 useless extension candidates. Maximal degree in co-relation 7190. Up to 1563 conditions per place. [2024-11-23 01:56:52,827 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 162 selfloop transitions, 7 changer transitions 0/199 dead transitions. [2024-11-23 01:56:52,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 199 transitions, 1689 flow [2024-11-23 01:56:52,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:56:52,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:56:52,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 226 transitions. [2024-11-23 01:56:52,829 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6975308641975309 [2024-11-23 01:56:52,829 INFO L175 Difference]: Start difference. First operand has 127 places, 168 transitions, 1199 flow. Second operand 4 states and 226 transitions. [2024-11-23 01:56:52,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 199 transitions, 1689 flow [2024-11-23 01:56:52,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 199 transitions, 1689 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 01:56:52,840 INFO L231 Difference]: Finished difference. Result has 132 places, 172 transitions, 1254 flow [2024-11-23 01:56:52,841 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1199, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1254, PETRI_PLACES=132, PETRI_TRANSITIONS=172} [2024-11-23 01:56:52,841 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 55 predicate places. [2024-11-23 01:56:52,841 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 172 transitions, 1254 flow [2024-11-23 01:56:52,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:52,841 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:52,841 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:56:52,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 01:56:52,842 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:56:52,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:52,842 INFO L85 PathProgramCache]: Analyzing trace with hash -252596925, now seen corresponding path program 1 times [2024-11-23 01:56:52,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:52,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261217779] [2024-11-23 01:56:52,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:52,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:52,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:52,916 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-23 01:56:52,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:52,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261217779] [2024-11-23 01:56:52,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261217779] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:56:52,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:56:52,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 01:56:52,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221537249] [2024-11-23 01:56:52,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:56:52,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:56:52,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:52,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:56:52,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:56:52,918 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 81 [2024-11-23 01:56:52,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 172 transitions, 1254 flow. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:52,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:52,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 81 [2024-11-23 01:56:52,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:53,209 INFO L124 PetriNetUnfolderBase]: 886/2444 cut-off events. [2024-11-23 01:56:53,210 INFO L125 PetriNetUnfolderBase]: For 3282/3318 co-relation queries the response was YES. [2024-11-23 01:56:53,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7371 conditions, 2444 events. 886/2444 cut-off events. For 3282/3318 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 17152 event pairs, 541 based on Foata normal form. 2/2298 useless extension candidates. Maximal degree in co-relation 6785. Up to 1635 conditions per place. [2024-11-23 01:56:53,220 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 127 selfloop transitions, 10 changer transitions 0/171 dead transitions. [2024-11-23 01:56:53,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 171 transitions, 1518 flow [2024-11-23 01:56:53,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:56:53,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:56:53,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 223 transitions. [2024-11-23 01:56:53,222 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6882716049382716 [2024-11-23 01:56:53,222 INFO L175 Difference]: Start difference. First operand has 132 places, 172 transitions, 1254 flow. Second operand 4 states and 223 transitions. [2024-11-23 01:56:53,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 171 transitions, 1518 flow [2024-11-23 01:56:53,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 171 transitions, 1513 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:56:53,237 INFO L231 Difference]: Finished difference. Result has 135 places, 171 transitions, 1263 flow [2024-11-23 01:56:53,238 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1263, PETRI_PLACES=135, PETRI_TRANSITIONS=171} [2024-11-23 01:56:53,238 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 58 predicate places. [2024-11-23 01:56:53,238 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 171 transitions, 1263 flow [2024-11-23 01:56:53,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:53,239 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:53,239 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:56:53,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 01:56:53,239 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:56:53,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:53,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1644240363, now seen corresponding path program 1 times [2024-11-23 01:56:53,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:53,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834806220] [2024-11-23 01:56:53,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:53,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:53,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:53,337 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:56:53,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:53,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834806220] [2024-11-23 01:56:53,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834806220] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:56:53,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341849066] [2024-11-23 01:56:53,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:53,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:53,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:56:53,341 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:56:53,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 01:56:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:53,427 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-23 01:56:53,428 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:56:53,522 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 01:56:53,522 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:56:53,619 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 01:56:53,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341849066] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:56:53,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:56:53,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-11-23 01:56:53,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132008822] [2024-11-23 01:56:53,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:56:53,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-23 01:56:53,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:53,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-23 01:56:53,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-23 01:56:53,732 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 81 [2024-11-23 01:56:53,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 171 transitions, 1263 flow. Second operand has 19 states, 19 states have (on average 39.0) internal successors, (741), 19 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:53,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:53,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 81 [2024-11-23 01:56:53,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:54,617 INFO L124 PetriNetUnfolderBase]: 1460/3534 cut-off events. [2024-11-23 01:56:54,618 INFO L125 PetriNetUnfolderBase]: For 4883/4925 co-relation queries the response was YES. [2024-11-23 01:56:54,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11133 conditions, 3534 events. 1460/3534 cut-off events. For 4883/4925 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 24717 event pairs, 266 based on Foata normal form. 52/3407 useless extension candidates. Maximal degree in co-relation 10265. Up to 987 conditions per place. [2024-11-23 01:56:54,637 INFO L140 encePairwiseOnDemand]: 66/81 looper letters, 302 selfloop transitions, 58 changer transitions 14/404 dead transitions. [2024-11-23 01:56:54,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 404 transitions, 3535 flow [2024-11-23 01:56:54,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-23 01:56:54,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-23 01:56:54,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 798 transitions. [2024-11-23 01:56:54,639 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.579520697167756 [2024-11-23 01:56:54,639 INFO L175 Difference]: Start difference. First operand has 135 places, 171 transitions, 1263 flow. Second operand 17 states and 798 transitions. [2024-11-23 01:56:54,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 404 transitions, 3535 flow [2024-11-23 01:56:54,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 404 transitions, 3513 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 01:56:54,661 INFO L231 Difference]: Finished difference. Result has 150 places, 196 transitions, 1627 flow [2024-11-23 01:56:54,661 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1241, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1627, PETRI_PLACES=150, PETRI_TRANSITIONS=196} [2024-11-23 01:56:54,661 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 73 predicate places. [2024-11-23 01:56:54,661 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 196 transitions, 1627 flow [2024-11-23 01:56:54,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 39.0) internal successors, (741), 19 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:54,662 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:54,662 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:56:54,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-23 01:56:54,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:54,862 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:56:54,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:54,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1430636979, now seen corresponding path program 1 times [2024-11-23 01:56:54,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:54,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849872056] [2024-11-23 01:56:54,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:54,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:55,025 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-23 01:56:55,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:55,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849872056] [2024-11-23 01:56:55,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849872056] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:56:55,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640907048] [2024-11-23 01:56:55,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:55,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:55,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:56:55,028 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:56:55,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 01:56:55,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:55,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-23 01:56:55,111 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:56:55,187 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-23 01:56:55,187 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:56:55,263 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-23 01:56:55,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640907048] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:56:55,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:56:55,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-23 01:56:55,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910987433] [2024-11-23 01:56:55,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:56:55,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-23 01:56:55,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:55,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-23 01:56:55,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-11-23 01:56:55,376 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 81 [2024-11-23 01:56:55,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 196 transitions, 1627 flow. Second operand has 21 states, 21 states have (on average 40.38095238095238) internal successors, (848), 21 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:55,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:55,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 81 [2024-11-23 01:56:55,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:55,927 INFO L124 PetriNetUnfolderBase]: 1325/3359 cut-off events. [2024-11-23 01:56:55,928 INFO L125 PetriNetUnfolderBase]: For 7150/7155 co-relation queries the response was YES. [2024-11-23 01:56:55,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11611 conditions, 3359 events. 1325/3359 cut-off events. For 7150/7155 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 23802 event pairs, 828 based on Foata normal form. 2/3253 useless extension candidates. Maximal degree in co-relation 10810. Up to 2251 conditions per place. [2024-11-23 01:56:55,944 INFO L140 encePairwiseOnDemand]: 69/81 looper letters, 78 selfloop transitions, 82 changer transitions 0/191 dead transitions. [2024-11-23 01:56:55,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 191 transitions, 1906 flow [2024-11-23 01:56:55,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 01:56:55,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-23 01:56:55,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 605 transitions. [2024-11-23 01:56:55,946 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5335097001763669 [2024-11-23 01:56:55,946 INFO L175 Difference]: Start difference. First operand has 150 places, 196 transitions, 1627 flow. Second operand 14 states and 605 transitions. [2024-11-23 01:56:55,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 191 transitions, 1906 flow [2024-11-23 01:56:55,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 191 transitions, 1848 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-23 01:56:55,965 INFO L231 Difference]: Finished difference. Result has 158 places, 191 transitions, 1692 flow [2024-11-23 01:56:55,966 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1506, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1692, PETRI_PLACES=158, PETRI_TRANSITIONS=191} [2024-11-23 01:56:55,966 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 81 predicate places. [2024-11-23 01:56:55,966 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 191 transitions, 1692 flow [2024-11-23 01:56:55,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 40.38095238095238) internal successors, (848), 21 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:55,967 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:55,967 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:56:55,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-23 01:56:56,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-23 01:56:56,168 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:56:56,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:56,168 INFO L85 PathProgramCache]: Analyzing trace with hash 396599330, now seen corresponding path program 1 times [2024-11-23 01:56:56,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:56,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710783496] [2024-11-23 01:56:56,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:56,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:56,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:56,236 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 01:56:56,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:56,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710783496] [2024-11-23 01:56:56,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710783496] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:56:56,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841072462] [2024-11-23 01:56:56,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:56,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:56,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:56:56,239 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:56:56,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-23 01:56:56,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:56,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 01:56:56,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:56:56,387 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:56,388 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:56:56,456 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:56,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841072462] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:56:56,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:56:56,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 16 [2024-11-23 01:56:56,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193266054] [2024-11-23 01:56:56,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:56:56,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-23 01:56:56,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:56,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-23 01:56:56,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-11-23 01:56:56,750 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 81 [2024-11-23 01:56:56,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 191 transitions, 1692 flow. Second operand has 16 states, 16 states have (on average 39.5) internal successors, (632), 16 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:56,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:56,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 81 [2024-11-23 01:56:56,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:57,582 INFO L124 PetriNetUnfolderBase]: 2222/5298 cut-off events. [2024-11-23 01:56:57,583 INFO L125 PetriNetUnfolderBase]: For 7117/7161 co-relation queries the response was YES. [2024-11-23 01:56:57,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16046 conditions, 5298 events. 2222/5298 cut-off events. For 7117/7161 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 39385 event pairs, 327 based on Foata normal form. 124/5156 useless extension candidates. Maximal degree in co-relation 15316. Up to 766 conditions per place. [2024-11-23 01:56:57,618 INFO L140 encePairwiseOnDemand]: 71/81 looper letters, 323 selfloop transitions, 38 changer transitions 0/389 dead transitions. [2024-11-23 01:56:57,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 389 transitions, 3698 flow [2024-11-23 01:56:57,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 01:56:57,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-23 01:56:57,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 603 transitions. [2024-11-23 01:56:57,620 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5726495726495726 [2024-11-23 01:56:57,620 INFO L175 Difference]: Start difference. First operand has 158 places, 191 transitions, 1692 flow. Second operand 13 states and 603 transitions. [2024-11-23 01:56:57,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 389 transitions, 3698 flow [2024-11-23 01:56:57,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 389 transitions, 3513 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-11-23 01:56:57,650 INFO L231 Difference]: Finished difference. Result has 158 places, 196 transitions, 1679 flow [2024-11-23 01:56:57,650 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1557, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1679, PETRI_PLACES=158, PETRI_TRANSITIONS=196} [2024-11-23 01:56:57,651 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 81 predicate places. [2024-11-23 01:56:57,651 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 196 transitions, 1679 flow [2024-11-23 01:56:57,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 39.5) internal successors, (632), 16 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:57,651 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:57,652 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:56:57,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-23 01:56:57,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-23 01:56:57,856 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:56:57,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:57,856 INFO L85 PathProgramCache]: Analyzing trace with hash 980082637, now seen corresponding path program 1 times [2024-11-23 01:56:57,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:57,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25349193] [2024-11-23 01:56:57,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:57,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:57,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:58,001 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:58,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:58,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25349193] [2024-11-23 01:56:58,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25349193] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:56:58,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059710645] [2024-11-23 01:56:58,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:58,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:56:58,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:56:58,005 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:56:58,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-23 01:56:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:58,102 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-23 01:56:58,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:56:58,131 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:58,131 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:56:58,238 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:56:58,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059710645] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:56:58,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:56:58,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-23 01:56:58,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690547671] [2024-11-23 01:56:58,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:56:58,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-23 01:56:58,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:58,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-23 01:56:58,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-23 01:56:58,280 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 81 [2024-11-23 01:56:58,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 196 transitions, 1679 flow. Second operand has 24 states, 24 states have (on average 40.291666666666664) internal successors, (967), 24 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:58,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:58,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 81 [2024-11-23 01:56:58,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:56:59,104 INFO L124 PetriNetUnfolderBase]: 2228/5799 cut-off events. [2024-11-23 01:56:59,104 INFO L125 PetriNetUnfolderBase]: For 14015/14027 co-relation queries the response was YES. [2024-11-23 01:56:59,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19731 conditions, 5799 events. 2228/5799 cut-off events. For 14015/14027 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 44848 event pairs, 1362 based on Foata normal form. 174/5786 useless extension candidates. Maximal degree in co-relation 18752. Up to 3627 conditions per place. [2024-11-23 01:56:59,150 INFO L140 encePairwiseOnDemand]: 68/81 looper letters, 75 selfloop transitions, 187 changer transitions 0/292 dead transitions. [2024-11-23 01:56:59,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 292 transitions, 3229 flow [2024-11-23 01:56:59,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-23 01:56:59,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-23 01:56:59,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 997 transitions. [2024-11-23 01:56:59,156 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5594837261503928 [2024-11-23 01:56:59,157 INFO L175 Difference]: Start difference. First operand has 158 places, 196 transitions, 1679 flow. Second operand 22 states and 997 transitions. [2024-11-23 01:56:59,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 292 transitions, 3229 flow [2024-11-23 01:56:59,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 292 transitions, 3157 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-23 01:56:59,194 INFO L231 Difference]: Finished difference. Result has 180 places, 292 transitions, 3109 flow [2024-11-23 01:56:59,194 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1631, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3109, PETRI_PLACES=180, PETRI_TRANSITIONS=292} [2024-11-23 01:56:59,194 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 103 predicate places. [2024-11-23 01:56:59,194 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 292 transitions, 3109 flow [2024-11-23 01:56:59,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 40.291666666666664) internal successors, (967), 24 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:59,195 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:56:59,195 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, 1, 1, 1, 1, 1, 1] [2024-11-23 01:56:59,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-23 01:56:59,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-23 01:56:59,396 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:56:59,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:56:59,398 INFO L85 PathProgramCache]: Analyzing trace with hash 813241376, now seen corresponding path program 1 times [2024-11-23 01:56:59,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:56:59,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662517507] [2024-11-23 01:56:59,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:56:59,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:56:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:56:59,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:56:59,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:56:59,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662517507] [2024-11-23 01:56:59,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662517507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:56:59,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:56:59,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:56:59,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723485226] [2024-11-23 01:56:59,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:56:59,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:56:59,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:56:59,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:56:59,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:56:59,491 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 81 [2024-11-23 01:56:59,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 292 transitions, 3109 flow. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:56:59,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:56:59,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 81 [2024-11-23 01:56:59,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:57:00,448 INFO L124 PetriNetUnfolderBase]: 3851/8454 cut-off events. [2024-11-23 01:57:00,448 INFO L125 PetriNetUnfolderBase]: For 16096/16180 co-relation queries the response was YES. [2024-11-23 01:57:00,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27760 conditions, 8454 events. 3851/8454 cut-off events. For 16096/16180 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 62601 event pairs, 1791 based on Foata normal form. 0/7970 useless extension candidates. Maximal degree in co-relation 26716. Up to 5171 conditions per place. [2024-11-23 01:57:00,516 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 299 selfloop transitions, 10 changer transitions 0/335 dead transitions. [2024-11-23 01:57:00,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 335 transitions, 3915 flow [2024-11-23 01:57:00,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:57:00,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:57:00,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 219 transitions. [2024-11-23 01:57:00,518 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6759259259259259 [2024-11-23 01:57:00,518 INFO L175 Difference]: Start difference. First operand has 180 places, 292 transitions, 3109 flow. Second operand 4 states and 219 transitions. [2024-11-23 01:57:00,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 335 transitions, 3915 flow [2024-11-23 01:57:00,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 335 transitions, 3463 flow, removed 129 selfloop flow, removed 9 redundant places. [2024-11-23 01:57:00,565 INFO L231 Difference]: Finished difference. Result has 176 places, 297 transitions, 2728 flow [2024-11-23 01:57:00,565 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=2657, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2728, PETRI_PLACES=176, PETRI_TRANSITIONS=297} [2024-11-23 01:57:00,565 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 99 predicate places. [2024-11-23 01:57:00,566 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 297 transitions, 2728 flow [2024-11-23 01:57:00,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:57:00,566 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:57:00,566 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:57:00,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-23 01:57:00,566 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:57:00,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:57:00,567 INFO L85 PathProgramCache]: Analyzing trace with hash -559320266, now seen corresponding path program 1 times [2024-11-23 01:57:00,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:57:00,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596944024] [2024-11-23 01:57:00,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:57:00,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:57:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:57:00,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:57:00,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:57:00,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596944024] [2024-11-23 01:57:00,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596944024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:57:00,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:57:00,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:57:00,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144688941] [2024-11-23 01:57:00,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:57:00,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:57:00,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:57:00,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:57:00,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:57:00,668 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 81 [2024-11-23 01:57:00,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 297 transitions, 2728 flow. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:57:00,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:57:00,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 81 [2024-11-23 01:57:00,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:57:01,643 INFO L124 PetriNetUnfolderBase]: 3446/7956 cut-off events. [2024-11-23 01:57:01,643 INFO L125 PetriNetUnfolderBase]: For 15285/15351 co-relation queries the response was YES. [2024-11-23 01:57:01,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26281 conditions, 7956 events. 3446/7956 cut-off events. For 15285/15351 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 60526 event pairs, 1674 based on Foata normal form. 0/7658 useless extension candidates. Maximal degree in co-relation 25313. Up to 4943 conditions per place. [2024-11-23 01:57:01,692 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 295 selfloop transitions, 11 changer transitions 0/334 dead transitions. [2024-11-23 01:57:01,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 334 transitions, 3498 flow [2024-11-23 01:57:01,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:57:01,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:57:01,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 220 transitions. [2024-11-23 01:57:01,694 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6790123456790124 [2024-11-23 01:57:01,694 INFO L175 Difference]: Start difference. First operand has 176 places, 297 transitions, 2728 flow. Second operand 4 states and 220 transitions. [2024-11-23 01:57:01,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 334 transitions, 3498 flow [2024-11-23 01:57:01,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 334 transitions, 3489 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:57:01,745 INFO L231 Difference]: Finished difference. Result has 180 places, 299 transitions, 2766 flow [2024-11-23 01:57:01,746 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=2719, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2766, PETRI_PLACES=180, PETRI_TRANSITIONS=299} [2024-11-23 01:57:01,748 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 103 predicate places. [2024-11-23 01:57:01,748 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 299 transitions, 2766 flow [2024-11-23 01:57:01,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:57:01,748 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:57:01,748 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:57:01,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-23 01:57:01,749 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:57:01,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:57:01,749 INFO L85 PathProgramCache]: Analyzing trace with hash -159058206, now seen corresponding path program 1 times [2024-11-23 01:57:01,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:57:01,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778211458] [2024-11-23 01:57:01,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:57:01,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:57:01,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:57:01,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:57:01,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:57:01,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778211458] [2024-11-23 01:57:01,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778211458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:57:01,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:57:01,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:57:01,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094974626] [2024-11-23 01:57:01,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:57:01,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:57:01,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:57:01,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:57:01,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:57:01,817 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 81 [2024-11-23 01:57:01,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 299 transitions, 2766 flow. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:57:01,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:57:01,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 81 [2024-11-23 01:57:01,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:57:02,696 INFO L124 PetriNetUnfolderBase]: 2996/7320 cut-off events. [2024-11-23 01:57:02,696 INFO L125 PetriNetUnfolderBase]: For 16213/16259 co-relation queries the response was YES. [2024-11-23 01:57:02,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25417 conditions, 7320 events. 2996/7320 cut-off events. For 16213/16259 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 56835 event pairs, 1479 based on Foata normal form. 186/7487 useless extension candidates. Maximal degree in co-relation 24447. Up to 4563 conditions per place. [2024-11-23 01:57:02,732 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 290 selfloop transitions, 10 changer transitions 0/333 dead transitions. [2024-11-23 01:57:02,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 333 transitions, 3514 flow [2024-11-23 01:57:02,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:57:02,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:57:02,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 227 transitions. [2024-11-23 01:57:02,737 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7006172839506173 [2024-11-23 01:57:02,737 INFO L175 Difference]: Start difference. First operand has 180 places, 299 transitions, 2766 flow. Second operand 4 states and 227 transitions. [2024-11-23 01:57:02,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 333 transitions, 3514 flow [2024-11-23 01:57:02,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 333 transitions, 3505 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:57:02,791 INFO L231 Difference]: Finished difference. Result has 184 places, 300 transitions, 2796 flow [2024-11-23 01:57:02,792 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=2757, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2796, PETRI_PLACES=184, PETRI_TRANSITIONS=300} [2024-11-23 01:57:02,792 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 107 predicate places. [2024-11-23 01:57:02,792 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 300 transitions, 2796 flow [2024-11-23 01:57:02,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:57:02,793 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:57:02,793 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:57:02,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-23 01:57:02,793 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:57:02,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:57:02,793 INFO L85 PathProgramCache]: Analyzing trace with hash 450201837, now seen corresponding path program 1 times [2024-11-23 01:57:02,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:57:02,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868760662] [2024-11-23 01:57:02,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:57:02,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:57:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:57:02,865 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-23 01:57:02,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:57:02,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868760662] [2024-11-23 01:57:02,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868760662] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:57:02,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596082310] [2024-11-23 01:57:02,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:57:02,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:57:02,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:57:02,868 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:57:02,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-23 01:57:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:57:02,965 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:57:02,967 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:57:02,989 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-23 01:57:02,989 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:57:03,015 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-23 01:57:03,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596082310] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:57:03,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:57:03,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-23 01:57:03,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050642360] [2024-11-23 01:57:03,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:57:03,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 01:57:03,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:57:03,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 01:57:03,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-23 01:57:03,025 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 81 [2024-11-23 01:57:03,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 300 transitions, 2796 flow. Second operand has 12 states, 12 states have (on average 45.0) internal successors, (540), 12 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:57:03,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:57:03,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 81 [2024-11-23 01:57:03,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:57:04,776 INFO L124 PetriNetUnfolderBase]: 4166/9088 cut-off events. [2024-11-23 01:57:04,777 INFO L125 PetriNetUnfolderBase]: For 28154/28194 co-relation queries the response was YES. [2024-11-23 01:57:04,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32544 conditions, 9088 events. 4166/9088 cut-off events. For 28154/28194 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 68214 event pairs, 833 based on Foata normal form. 306/9351 useless extension candidates. Maximal degree in co-relation 31175. Up to 4073 conditions per place. [2024-11-23 01:57:04,817 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 495 selfloop transitions, 20 changer transitions 0/549 dead transitions. [2024-11-23 01:57:04,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 549 transitions, 6006 flow [2024-11-23 01:57:04,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 01:57:04,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 01:57:04,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 569 transitions. [2024-11-23 01:57:04,819 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7024691358024692 [2024-11-23 01:57:04,819 INFO L175 Difference]: Start difference. First operand has 184 places, 300 transitions, 2796 flow. Second operand 10 states and 569 transitions. [2024-11-23 01:57:04,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 549 transitions, 6006 flow [2024-11-23 01:57:04,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 549 transitions, 5904 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 01:57:04,932 INFO L231 Difference]: Finished difference. Result has 193 places, 309 transitions, 2876 flow [2024-11-23 01:57:04,932 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=2782, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2876, PETRI_PLACES=193, PETRI_TRANSITIONS=309} [2024-11-23 01:57:04,932 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 116 predicate places. [2024-11-23 01:57:04,933 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 309 transitions, 2876 flow [2024-11-23 01:57:04,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 45.0) internal successors, (540), 12 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:57:04,933 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:57:04,933 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:57:04,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-23 01:57:05,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:57:05,135 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:57:05,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:57:05,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1284501350, now seen corresponding path program 2 times [2024-11-23 01:57:05,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:57:05,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488874870] [2024-11-23 01:57:05,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:57:05,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:57:05,166 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 01:57:05,167 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:57:05,216 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-23 01:57:05,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:57:05,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488874870] [2024-11-23 01:57:05,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488874870] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:57:05,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994250324] [2024-11-23 01:57:05,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:57:05,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:57:05,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:57:05,222 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:57:05,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-23 01:57:05,318 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 01:57:05,319 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:57:05,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 01:57:05,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:57:05,376 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-23 01:57:05,376 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:57:05,418 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-23 01:57:05,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994250324] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:57:05,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:57:05,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-23 01:57:05,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014191591] [2024-11-23 01:57:05,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:57:05,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 01:57:05,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:57:05,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 01:57:05,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 01:57:05,442 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 81 [2024-11-23 01:57:05,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 309 transitions, 2876 flow. Second operand has 5 states, 5 states have (on average 43.4) internal successors, (217), 5 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:57:05,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:57:05,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 81 [2024-11-23 01:57:05,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:57:06,881 INFO L124 PetriNetUnfolderBase]: 4004/9292 cut-off events. [2024-11-23 01:57:06,881 INFO L125 PetriNetUnfolderBase]: For 27674/27682 co-relation queries the response was YES. [2024-11-23 01:57:06,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34868 conditions, 9292 events. 4004/9292 cut-off events. For 27674/27682 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 73389 event pairs, 2541 based on Foata normal form. 6/9241 useless extension candidates. Maximal degree in co-relation 33496. Up to 5967 conditions per place. [2024-11-23 01:57:06,938 INFO L140 encePairwiseOnDemand]: 74/81 looper letters, 173 selfloop transitions, 102 changer transitions 0/309 dead transitions. [2024-11-23 01:57:06,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 309 transitions, 3427 flow [2024-11-23 01:57:06,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 01:57:06,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 01:57:06,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 243 transitions. [2024-11-23 01:57:06,943 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-23 01:57:06,943 INFO L175 Difference]: Start difference. First operand has 193 places, 309 transitions, 2876 flow. Second operand 5 states and 243 transitions. [2024-11-23 01:57:06,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 309 transitions, 3427 flow [2024-11-23 01:57:07,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 309 transitions, 3349 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-11-23 01:57:07,031 INFO L231 Difference]: Finished difference. Result has 191 places, 309 transitions, 3039 flow [2024-11-23 01:57:07,034 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=2788, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3039, PETRI_PLACES=191, PETRI_TRANSITIONS=309} [2024-11-23 01:57:07,035 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 114 predicate places. [2024-11-23 01:57:07,036 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 309 transitions, 3039 flow [2024-11-23 01:57:07,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.4) internal successors, (217), 5 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:57:07,036 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:57:07,036 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:57:07,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-23 01:57:07,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-23 01:57:07,241 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:57:07,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:57:07,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1698927349, now seen corresponding path program 1 times [2024-11-23 01:57:07,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:57:07,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41611212] [2024-11-23 01:57:07,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:57:07,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:57:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:57:07,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:57:07,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:57:07,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41611212] [2024-11-23 01:57:07,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41611212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:57:07,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:57:07,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 01:57:07,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265219197] [2024-11-23 01:57:07,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:57:07,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 01:57:07,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:57:07,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 01:57:07,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-23 01:57:07,460 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 81 [2024-11-23 01:57:07,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 309 transitions, 3039 flow. Second operand has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:57:07,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:57:07,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 81 [2024-11-23 01:57:07,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:57:08,855 INFO L124 PetriNetUnfolderBase]: 4108/9703 cut-off events. [2024-11-23 01:57:08,856 INFO L125 PetriNetUnfolderBase]: For 23693/23764 co-relation queries the response was YES. [2024-11-23 01:57:08,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35186 conditions, 9703 events. 4108/9703 cut-off events. For 23693/23764 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 78421 event pairs, 1515 based on Foata normal form. 180/9852 useless extension candidates. Maximal degree in co-relation 33785. Up to 4221 conditions per place. [2024-11-23 01:57:08,930 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 372 selfloop transitions, 7 changer transitions 11/419 dead transitions. [2024-11-23 01:57:08,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 419 transitions, 4704 flow [2024-11-23 01:57:08,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 01:57:08,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 01:57:08,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 268 transitions. [2024-11-23 01:57:08,932 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6617283950617284 [2024-11-23 01:57:08,932 INFO L175 Difference]: Start difference. First operand has 191 places, 309 transitions, 3039 flow. Second operand 5 states and 268 transitions. [2024-11-23 01:57:08,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 419 transitions, 4704 flow [2024-11-23 01:57:09,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 419 transitions, 4534 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 01:57:09,026 INFO L231 Difference]: Finished difference. Result has 192 places, 307 transitions, 2869 flow [2024-11-23 01:57:09,027 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=2855, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2869, PETRI_PLACES=192, PETRI_TRANSITIONS=307} [2024-11-23 01:57:09,027 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 115 predicate places. [2024-11-23 01:57:09,027 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 307 transitions, 2869 flow [2024-11-23 01:57:09,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:57:09,027 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:57:09,027 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:57:09,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-23 01:57:09,028 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:57:09,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:57:09,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1487302528, now seen corresponding path program 1 times [2024-11-23 01:57:09,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:57:09,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385389850] [2024-11-23 01:57:09,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:57:09,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:57:09,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:57:09,168 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 01:57:09,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:57:09,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385389850] [2024-11-23 01:57:09,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385389850] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:57:09,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965816623] [2024-11-23 01:57:09,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:57:09,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:57:09,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:57:09,171 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:57:09,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-23 01:57:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:57:09,274 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:57:09,275 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:57:09,299 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 01:57:09,299 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:57:09,325 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 01:57:09,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965816623] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:57:09,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:57:09,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-23 01:57:09,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394578363] [2024-11-23 01:57:09,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:57:09,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 01:57:09,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:57:09,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 01:57:09,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-23 01:57:09,373 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 81 [2024-11-23 01:57:09,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 307 transitions, 2869 flow. Second operand has 12 states, 12 states have (on average 43.583333333333336) internal successors, (523), 12 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:57:09,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:57:09,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 81 [2024-11-23 01:57:09,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:57:12,189 INFO L124 PetriNetUnfolderBase]: 7867/17255 cut-off events. [2024-11-23 01:57:12,189 INFO L125 PetriNetUnfolderBase]: For 39198/39346 co-relation queries the response was YES. [2024-11-23 01:57:12,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61055 conditions, 17255 events. 7867/17255 cut-off events. For 39198/39346 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 143283 event pairs, 1476 based on Foata normal form. 258/17495 useless extension candidates. Maximal degree in co-relation 59683. Up to 4732 conditions per place. [2024-11-23 01:57:12,315 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 501 selfloop transitions, 28 changer transitions 0/559 dead transitions. [2024-11-23 01:57:12,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 559 transitions, 5484 flow [2024-11-23 01:57:12,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 01:57:12,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 01:57:12,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 533 transitions. [2024-11-23 01:57:12,317 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6580246913580247 [2024-11-23 01:57:12,317 INFO L175 Difference]: Start difference. First operand has 192 places, 307 transitions, 2869 flow. Second operand 10 states and 533 transitions. [2024-11-23 01:57:12,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 559 transitions, 5484 flow [2024-11-23 01:57:12,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 559 transitions, 5468 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-23 01:57:12,492 INFO L231 Difference]: Finished difference. Result has 200 places, 322 transitions, 3099 flow [2024-11-23 01:57:12,492 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=2853, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3099, PETRI_PLACES=200, PETRI_TRANSITIONS=322} [2024-11-23 01:57:12,493 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 123 predicate places. [2024-11-23 01:57:12,493 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 322 transitions, 3099 flow [2024-11-23 01:57:12,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 43.583333333333336) internal successors, (523), 12 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:57:12,493 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:57:12,493 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:57:12,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-23 01:57:12,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:57:12,697 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:57:12,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:57:12,698 INFO L85 PathProgramCache]: Analyzing trace with hash -752087058, now seen corresponding path program 1 times [2024-11-23 01:57:12,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:57:12,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031194698] [2024-11-23 01:57:12,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:57:12,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:57:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:57:12,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:57:12,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:57:12,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031194698] [2024-11-23 01:57:12,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031194698] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:57:12,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839417039] [2024-11-23 01:57:12,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:57:12,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:57:12,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:57:12,811 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:57:12,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-23 01:57:12,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:57:12,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 01:57:12,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:57:12,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:57:12,952 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:57:12,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:57:12,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839417039] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 01:57:12,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-23 01:57:12,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2024-11-23 01:57:12,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480033046] [2024-11-23 01:57:12,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:57:12,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 01:57:12,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:57:12,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 01:57:12,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-23 01:57:13,033 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 81 [2024-11-23 01:57:13,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 322 transitions, 3099 flow. Second operand has 5 states, 5 states have (on average 50.2) internal successors, (251), 5 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:57:13,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:57:13,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 81 [2024-11-23 01:57:13,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:57:15,329 INFO L124 PetriNetUnfolderBase]: 6595/16362 cut-off events. [2024-11-23 01:57:15,330 INFO L125 PetriNetUnfolderBase]: For 48172/48238 co-relation queries the response was YES. [2024-11-23 01:57:15,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58098 conditions, 16362 events. 6595/16362 cut-off events. For 48172/48238 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 136400 event pairs, 2820 based on Foata normal form. 301/16641 useless extension candidates. Maximal degree in co-relation 56724. Up to 4343 conditions per place. [2024-11-23 01:57:15,441 INFO L140 encePairwiseOnDemand]: 74/81 looper letters, 347 selfloop transitions, 22 changer transitions 1/404 dead transitions. [2024-11-23 01:57:15,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 404 transitions, 4374 flow [2024-11-23 01:57:15,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 01:57:15,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 01:57:15,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 288 transitions. [2024-11-23 01:57:15,443 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7111111111111111 [2024-11-23 01:57:15,443 INFO L175 Difference]: Start difference. First operand has 200 places, 322 transitions, 3099 flow. Second operand 5 states and 288 transitions. [2024-11-23 01:57:15,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 404 transitions, 4374 flow [2024-11-23 01:57:15,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 404 transitions, 4344 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-23 01:57:15,560 INFO L231 Difference]: Finished difference. Result has 206 places, 328 transitions, 3250 flow [2024-11-23 01:57:15,560 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=2980, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3250, PETRI_PLACES=206, PETRI_TRANSITIONS=328} [2024-11-23 01:57:15,561 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 129 predicate places. [2024-11-23 01:57:15,561 INFO L471 AbstractCegarLoop]: Abstraction has has 206 places, 328 transitions, 3250 flow [2024-11-23 01:57:15,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 50.2) internal successors, (251), 5 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:57:15,561 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:57:15,561 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:57:15,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-23 01:57:15,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:57:15,765 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:57:15,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:57:15,766 INFO L85 PathProgramCache]: Analyzing trace with hash -158211297, now seen corresponding path program 1 times [2024-11-23 01:57:15,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:57:15,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657663817] [2024-11-23 01:57:15,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:57:15,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:57:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:57:15,854 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 01:57:15,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:57:15,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657663817] [2024-11-23 01:57:15,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657663817] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:57:15,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795953917] [2024-11-23 01:57:15,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:57:15,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:57:15,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:57:15,856 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:57:15,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-23 01:57:15,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:57:15,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-23 01:57:15,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:57:16,051 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:57:16,051 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:57:16,160 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:57:16,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795953917] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:57:16,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:57:16,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-11-23 01:57:16,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120387377] [2024-11-23 01:57:16,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:57:16,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-23 01:57:16,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:57:16,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-23 01:57:16,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-23 01:57:16,643 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 81 [2024-11-23 01:57:16,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 328 transitions, 3250 flow. Second operand has 19 states, 19 states have (on average 33.89473684210526) internal successors, (644), 19 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:57:16,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:57:16,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 81 [2024-11-23 01:57:16,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:57:22,823 INFO L124 PetriNetUnfolderBase]: 19508/35885 cut-off events. [2024-11-23 01:57:22,824 INFO L125 PetriNetUnfolderBase]: For 100733/101107 co-relation queries the response was YES. [2024-11-23 01:57:23,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132541 conditions, 35885 events. 19508/35885 cut-off events. For 100733/101107 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 263105 event pairs, 6285 based on Foata normal form. 516/36359 useless extension candidates. Maximal degree in co-relation 130976. Up to 9637 conditions per place. [2024-11-23 01:57:23,214 INFO L140 encePairwiseOnDemand]: 64/81 looper letters, 551 selfloop transitions, 187 changer transitions 0/760 dead transitions. [2024-11-23 01:57:23,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 760 transitions, 7776 flow [2024-11-23 01:57:23,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-23 01:57:23,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-23 01:57:23,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 788 transitions. [2024-11-23 01:57:23,216 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48641975308641977 [2024-11-23 01:57:23,216 INFO L175 Difference]: Start difference. First operand has 206 places, 328 transitions, 3250 flow. Second operand 20 states and 788 transitions. [2024-11-23 01:57:23,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 760 transitions, 7776 flow [2024-11-23 01:57:23,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 760 transitions, 7767 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 01:57:23,580 INFO L231 Difference]: Finished difference. Result has 230 places, 407 transitions, 4800 flow [2024-11-23 01:57:23,581 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=3245, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4800, PETRI_PLACES=230, PETRI_TRANSITIONS=407} [2024-11-23 01:57:23,582 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 153 predicate places. [2024-11-23 01:57:23,582 INFO L471 AbstractCegarLoop]: Abstraction has has 230 places, 407 transitions, 4800 flow [2024-11-23 01:57:23,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 33.89473684210526) internal successors, (644), 19 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:57:23,583 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:57:23,583 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:57:23,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-23 01:57:23,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:57:23,783 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:57:23,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:57:23,784 INFO L85 PathProgramCache]: Analyzing trace with hash 503291331, now seen corresponding path program 1 times [2024-11-23 01:57:23,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:57:23,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726828545] [2024-11-23 01:57:23,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:57:23,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:57:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-23 01:57:23,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1338100761] [2024-11-23 01:57:23,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:57:23,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:57:23,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:57:23,823 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:57:23,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-23 01:57:23,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:57:23,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 01:57:23,934 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:57:24,007 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 01:57:24,008 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:57:33,876 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 01:57:33,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:57:33,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726828545] [2024-11-23 01:57:33,877 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-23 01:57:33,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338100761] [2024-11-23 01:57:33,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338100761] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:57:33,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 01:57:33,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-23 01:57:33,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630871686] [2024-11-23 01:57:33,877 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 01:57:33,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 01:57:33,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:57:33,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 01:57:33,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=44, Unknown=3, NotChecked=0, Total=72 [2024-11-23 01:57:36,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.97s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-11-23 01:57:40,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.29s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-11-23 01:57:44,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-11-23 01:57:47,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.52s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-11-23 01:57:51,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.61s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-11-23 01:57:51,421 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-11-23 01:57:51,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 407 transitions, 4800 flow. Second operand has 9 states, 9 states have (on average 39.666666666666664) internal successors, (357), 9 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:57:51,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:57:51,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-11-23 01:57:51,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:58:05,838 INFO L124 PetriNetUnfolderBase]: 22458/38762 cut-off events. [2024-11-23 01:58:05,839 INFO L125 PetriNetUnfolderBase]: For 121315/121825 co-relation queries the response was YES. [2024-11-23 01:58:06,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152579 conditions, 38762 events. 22458/38762 cut-off events. For 121315/121825 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 264805 event pairs, 12345 based on Foata normal form. 258/38977 useless extension candidates. Maximal degree in co-relation 150934. Up to 27359 conditions per place. [2024-11-23 01:58:06,296 INFO L140 encePairwiseOnDemand]: 70/81 looper letters, 590 selfloop transitions, 27 changer transitions 0/638 dead transitions. [2024-11-23 01:58:06,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 638 transitions, 7382 flow [2024-11-23 01:58:06,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 01:58:06,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 01:58:06,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 477 transitions. [2024-11-23 01:58:06,298 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2024-11-23 01:58:06,298 INFO L175 Difference]: Start difference. First operand has 230 places, 407 transitions, 4800 flow. Second operand 10 states and 477 transitions. [2024-11-23 01:58:06,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 638 transitions, 7382 flow [2024-11-23 01:58:06,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 638 transitions, 7242 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-11-23 01:58:06,766 INFO L231 Difference]: Finished difference. Result has 240 places, 419 transitions, 4920 flow [2024-11-23 01:58:06,767 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=4676, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4920, PETRI_PLACES=240, PETRI_TRANSITIONS=419} [2024-11-23 01:58:06,767 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 163 predicate places. [2024-11-23 01:58:06,767 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 419 transitions, 4920 flow [2024-11-23 01:58:06,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 39.666666666666664) internal successors, (357), 9 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:58:06,768 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:58:06,768 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:58:06,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-23 01:58:06,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:58:06,968 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:58:06,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:58:06,969 INFO L85 PathProgramCache]: Analyzing trace with hash -759246699, now seen corresponding path program 2 times [2024-11-23 01:58:06,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:58:06,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71155435] [2024-11-23 01:58:06,969 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:58:06,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:58:06,986 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 01:58:06,986 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:58:07,010 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-23 01:58:07,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:58:07,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71155435] [2024-11-23 01:58:07,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71155435] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:58:07,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076858743] [2024-11-23 01:58:07,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:58:07,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:58:07,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:58:07,012 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:58:07,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-23 01:58:07,147 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 01:58:07,147 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:58:07,148 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:58:07,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:58:08,057 WARN L873 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= c_~L~0 .cse0)))) is different from true [2024-11-23 01:58:09,110 WARN L873 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= (+ |c_thread1Thread1of1ForFork1_#t~post2| 1) .cse0)))) is different from true [2024-11-23 01:58:09,120 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 8 not checked. [2024-11-23 01:58:09,120 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:58:09,152 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-23 01:58:09,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076858743] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:58:09,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:58:09,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-23 01:58:09,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376317543] [2024-11-23 01:58:09,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:58:09,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:58:09,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:58:09,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:58:09,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=9, Unknown=2, NotChecked=10, Total=30 [2024-11-23 01:58:09,154 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 81 [2024-11-23 01:58:09,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 419 transitions, 4920 flow. Second operand has 6 states, 6 states have (on average 47.666666666666664) internal successors, (286), 6 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:58:09,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:58:09,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 81 [2024-11-23 01:58:09,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:58:17,206 INFO L124 PetriNetUnfolderBase]: 14187/29423 cut-off events. [2024-11-23 01:58:17,206 INFO L125 PetriNetUnfolderBase]: For 158918/158986 co-relation queries the response was YES. [2024-11-23 01:58:17,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124078 conditions, 29423 events. 14187/29423 cut-off events. For 158918/158986 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 236207 event pairs, 5378 based on Foata normal form. 330/29433 useless extension candidates. Maximal degree in co-relation 122125. Up to 13953 conditions per place. [2024-11-23 01:58:17,518 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 408 selfloop transitions, 17 changer transitions 38/502 dead transitions. [2024-11-23 01:58:17,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 502 transitions, 6774 flow [2024-11-23 01:58:17,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:58:17,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:58:17,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 311 transitions. [2024-11-23 01:58:17,520 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6399176954732511 [2024-11-23 01:58:17,520 INFO L175 Difference]: Start difference. First operand has 240 places, 419 transitions, 4920 flow. Second operand 6 states and 311 transitions. [2024-11-23 01:58:17,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 502 transitions, 6774 flow [2024-11-23 01:58:18,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 502 transitions, 6722 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-11-23 01:58:18,081 INFO L231 Difference]: Finished difference. Result has 242 places, 404 transitions, 4742 flow [2024-11-23 01:58:18,081 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=4882, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4742, PETRI_PLACES=242, PETRI_TRANSITIONS=404} [2024-11-23 01:58:18,082 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 165 predicate places. [2024-11-23 01:58:18,082 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 404 transitions, 4742 flow [2024-11-23 01:58:18,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 47.666666666666664) internal successors, (286), 6 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:58:18,082 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:58:18,082 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:58:18,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-23 01:58:18,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-23 01:58:18,283 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-23 01:58:18,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:58:18,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1577837067, now seen corresponding path program 1 times [2024-11-23 01:58:18,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:58:18,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859347965] [2024-11-23 01:58:18,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:58:18,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:58:18,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:58:18,378 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 01:58:18,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:58:18,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859347965] [2024-11-23 01:58:18,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859347965] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:58:18,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914100540] [2024-11-23 01:58:18,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:58:18,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:58:18,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:58:18,380 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 01:58:18,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-23 01:58:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:58:18,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:58:18,495 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:58:18,517 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 01:58:18,517 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:58:18,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914100540] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:58:18,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:58:18,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-23 01:58:18,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991018017] [2024-11-23 01:58:18,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:58:18,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:58:18,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:58:18,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:58:18,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:58:18,533 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 81 [2024-11-23 01:58:18,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 404 transitions, 4742 flow. Second operand has 6 states, 6 states have (on average 46.833333333333336) internal successors, (281), 6 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:58:18,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:58:18,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 81 [2024-11-23 01:58:18,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand