./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longest-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longest-1.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 529fe0895c01c52d9b18b51c32204a307faf547c0c07b22bc1a431308affcf90 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 23:46:50,038 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 23:46:50,100 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-11 23:46:50,105 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 23:46:50,107 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 23:46:50,136 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 23:46:50,137 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 23:46:50,137 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 23:46:50,137 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 23:46:50,138 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 23:46:50,138 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 23:46:50,138 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 23:46:50,139 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 23:46:50,140 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 23:46:50,140 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 23:46:50,141 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 23:46:50,141 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 23:46:50,142 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 23:46:50,142 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 23:46:50,142 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 23:46:50,145 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 23:46:50,145 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 23:46:50,145 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 23:46:50,145 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 23:46:50,146 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 23:46:50,146 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-11 23:46:50,146 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 23:46:50,146 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 23:46:50,146 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 23:46:50,146 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 23:46:50,147 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 23:46:50,147 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 23:46:50,147 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 23:46:50,147 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 23:46:50,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:46:50,147 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 23:46:50,147 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 23:46:50,148 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 23:46:50,148 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 23:46:50,148 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 23:46:50,148 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 23:46:50,149 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 23:46:50,149 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 23:46:50,149 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 23:46:50,149 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 529fe0895c01c52d9b18b51c32204a307faf547c0c07b22bc1a431308affcf90 [2024-10-11 23:46:50,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 23:46:50,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 23:46:50,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 23:46:50,425 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 23:46:50,426 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 23:46:50,427 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longest-1.i [2024-10-11 23:46:51,753 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 23:46:51,956 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 23:46:51,956 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longest-1.i [2024-10-11 23:46:51,968 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/68f8ed11f/b2e077075f5b4d5eaa74dfa8372acf58/FLAG3fc8bafe9 [2024-10-11 23:46:51,980 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/68f8ed11f/b2e077075f5b4d5eaa74dfa8372acf58 [2024-10-11 23:46:51,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 23:46:51,984 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 23:46:51,984 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 23:46:51,985 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 23:46:51,991 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 23:46:51,991 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:46:51" (1/1) ... [2024-10-11 23:46:51,994 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52f7bd73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:51, skipping insertion in model container [2024-10-11 23:46:51,994 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:46:51" (1/1) ... [2024-10-11 23:46:52,041 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 23:46:52,345 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:46:52,354 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 23:46:52,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:46:52,438 INFO L204 MainTranslator]: Completed translation [2024-10-11 23:46:52,439 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:52 WrapperNode [2024-10-11 23:46:52,439 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 23:46:52,440 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 23:46:52,440 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 23:46:52,440 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 23:46:52,445 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:52" (1/1) ... [2024-10-11 23:46:52,466 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:52" (1/1) ... [2024-10-11 23:46:52,495 INFO L138 Inliner]: procedures = 277, calls = 32, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 165 [2024-10-11 23:46:52,495 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 23:46:52,496 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 23:46:52,496 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 23:46:52,496 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 23:46:52,509 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:52" (1/1) ... [2024-10-11 23:46:52,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:52" (1/1) ... [2024-10-11 23:46:52,511 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:52" (1/1) ... [2024-10-11 23:46:52,532 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [2, 5, 3]. 50 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 2 writes are split as follows [0, 0, 2]. [2024-10-11 23:46:52,532 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:52" (1/1) ... [2024-10-11 23:46:52,533 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:52" (1/1) ... [2024-10-11 23:46:52,537 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:52" (1/1) ... [2024-10-11 23:46:52,544 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:52" (1/1) ... [2024-10-11 23:46:52,548 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:52" (1/1) ... [2024-10-11 23:46:52,549 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:52" (1/1) ... [2024-10-11 23:46:52,555 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 23:46:52,556 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 23:46:52,556 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 23:46:52,556 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 23:46:52,557 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:52" (1/1) ... [2024-10-11 23:46:52,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:46:52,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:46:52,591 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 23:46:52,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 23:46:52,632 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-10-11 23:46:52,633 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-10-11 23:46:52,633 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-10-11 23:46:52,633 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-10-11 23:46:52,633 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 23:46:52,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 23:46:52,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 23:46:52,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-11 23:46:52,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 23:46:52,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 23:46:52,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-11 23:46:52,635 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 23:46:52,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 23:46:52,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 23:46:52,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 23:46:52,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 23:46:52,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 23:46:52,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 23:46:52,638 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 23:46:52,776 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 23:46:52,778 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 23:46:53,143 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 23:46:53,146 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 23:46:53,276 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 23:46:53,277 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 23:46:53,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:46:53 BoogieIcfgContainer [2024-10-11 23:46:53,277 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 23:46:53,279 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 23:46:53,280 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 23:46:53,282 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 23:46:53,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 11:46:51" (1/3) ... [2024-10-11 23:46:53,283 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@caba6f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:46:53, skipping insertion in model container [2024-10-11 23:46:53,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:46:52" (2/3) ... [2024-10-11 23:46:53,284 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@caba6f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:46:53, skipping insertion in model container [2024-10-11 23:46:53,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:46:53" (3/3) ... [2024-10-11 23:46:53,285 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longest-1.i [2024-10-11 23:46:53,297 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 23:46:53,297 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-11 23:46:53,297 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 23:46:53,350 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 23:46:53,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 48 transitions, 110 flow [2024-10-11 23:46:53,392 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2024-10-11 23:46:53,393 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 23:46:53,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 46 events. 5/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 124 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2024-10-11 23:46:53,395 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 48 transitions, 110 flow [2024-10-11 23:46:53,400 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 44 transitions, 97 flow [2024-10-11 23:46:53,406 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:46:53,413 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@61f69585, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:46:53,414 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-10-11 23:46:53,421 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:46:53,422 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2024-10-11 23:46:53,422 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 23:46:53,422 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:53,423 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:53,423 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:46:53,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:53,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1280856135, now seen corresponding path program 1 times [2024-10-11 23:46:53,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:53,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924792825] [2024-10-11 23:46:53,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:53,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:53,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:53,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:53,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924792825] [2024-10-11 23:46:53,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924792825] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:53,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:53,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:46:53,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934767083] [2024-10-11 23:46:53,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:53,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:46:53,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:53,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:46:53,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:46:53,768 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-10-11 23:46:53,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:53,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:53,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-10-11 23:46:53,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:54,100 INFO L124 PetriNetUnfolderBase]: 713/1403 cut-off events. [2024-10-11 23:46:54,101 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2024-10-11 23:46:54,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2599 conditions, 1403 events. 713/1403 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 7653 event pairs, 148 based on Foata normal form. 40/1281 useless extension candidates. Maximal degree in co-relation 2472. Up to 781 conditions per place. [2024-10-11 23:46:54,112 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 71 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2024-10-11 23:46:54,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 91 transitions, 354 flow [2024-10-11 23:46:54,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 23:46:54,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 23:46:54,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-10-11 23:46:54,125 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-10-11 23:46:54,126 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 97 flow. Second operand 5 states and 162 transitions. [2024-10-11 23:46:54,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 91 transitions, 354 flow [2024-10-11 23:46:54,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 91 transitions, 345 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 23:46:54,135 INFO L231 Difference]: Finished difference. Result has 50 places, 49 transitions, 140 flow [2024-10-11 23:46:54,137 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=140, PETRI_PLACES=50, PETRI_TRANSITIONS=49} [2024-10-11 23:46:54,141 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2024-10-11 23:46:54,143 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 49 transitions, 140 flow [2024-10-11 23:46:54,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:54,143 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:54,143 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:54,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 23:46:54,144 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:46:54,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:54,144 INFO L85 PathProgramCache]: Analyzing trace with hash 2055017369, now seen corresponding path program 1 times [2024-10-11 23:46:54,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:54,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754537177] [2024-10-11 23:46:54,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:54,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:54,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:54,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:54,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754537177] [2024-10-11 23:46:54,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754537177] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:54,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:54,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:46:54,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549771731] [2024-10-11 23:46:54,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:54,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:46:54,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:54,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:46:54,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:46:54,261 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-10-11 23:46:54,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 49 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:54,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:54,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-10-11 23:46:54,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:54,452 INFO L124 PetriNetUnfolderBase]: 581/1195 cut-off events. [2024-10-11 23:46:54,453 INFO L125 PetriNetUnfolderBase]: For 194/194 co-relation queries the response was YES. [2024-10-11 23:46:54,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2461 conditions, 1195 events. 581/1195 cut-off events. For 194/194 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 6415 event pairs, 160 based on Foata normal form. 0/1085 useless extension candidates. Maximal degree in co-relation 2295. Up to 608 conditions per place. [2024-10-11 23:46:54,457 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 61 selfloop transitions, 6 changer transitions 0/83 dead transitions. [2024-10-11 23:46:54,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 83 transitions, 350 flow [2024-10-11 23:46:54,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 23:46:54,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 23:46:54,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2024-10-11 23:46:54,458 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6625 [2024-10-11 23:46:54,459 INFO L175 Difference]: Start difference. First operand has 50 places, 49 transitions, 140 flow. Second operand 5 states and 159 transitions. [2024-10-11 23:46:54,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 83 transitions, 350 flow [2024-10-11 23:46:54,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 83 transitions, 346 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-11 23:46:54,462 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 160 flow [2024-10-11 23:46:54,462 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=160, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2024-10-11 23:46:54,462 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2024-10-11 23:46:54,462 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 160 flow [2024-10-11 23:46:54,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:54,463 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:54,463 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:54,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 23:46:54,463 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:46:54,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:54,464 INFO L85 PathProgramCache]: Analyzing trace with hash -719002303, now seen corresponding path program 1 times [2024-10-11 23:46:54,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:54,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699489668] [2024-10-11 23:46:54,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:54,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:54,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:54,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:54,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:54,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699489668] [2024-10-11 23:46:54,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699489668] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:54,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:54,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:46:54,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534324445] [2024-10-11 23:46:54,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:54,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:46:54,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:54,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:46:54,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:46:54,511 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-10-11 23:46:54,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:54,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:54,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-10-11 23:46:54,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:54,748 INFO L124 PetriNetUnfolderBase]: 1096/2189 cut-off events. [2024-10-11 23:46:54,749 INFO L125 PetriNetUnfolderBase]: For 631/631 co-relation queries the response was YES. [2024-10-11 23:46:54,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4798 conditions, 2189 events. 1096/2189 cut-off events. For 631/631 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 12634 event pairs, 498 based on Foata normal form. 68/2099 useless extension candidates. Maximal degree in co-relation 3900. Up to 1101 conditions per place. [2024-10-11 23:46:54,758 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 76 selfloop transitions, 3 changer transitions 0/93 dead transitions. [2024-10-11 23:46:54,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 93 transitions, 468 flow [2024-10-11 23:46:54,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:46:54,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:46:54,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-10-11 23:46:54,762 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-10-11 23:46:54,763 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 160 flow. Second operand 4 states and 132 transitions. [2024-10-11 23:46:54,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 93 transitions, 468 flow [2024-10-11 23:46:54,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 93 transitions, 468 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 23:46:54,768 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 184 flow [2024-10-11 23:46:54,768 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2024-10-11 23:46:54,769 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2024-10-11 23:46:54,769 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 184 flow [2024-10-11 23:46:54,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:54,770 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:54,770 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:54,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 23:46:54,770 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:46:54,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:54,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1945446351, now seen corresponding path program 1 times [2024-10-11 23:46:54,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:54,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891734509] [2024-10-11 23:46:54,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:54,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:54,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:54,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:54,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891734509] [2024-10-11 23:46:54,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891734509] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:54,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:54,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:46:54,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949177921] [2024-10-11 23:46:54,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:54,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:46:54,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:54,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:46:54,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:46:54,850 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-10-11 23:46:54,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:54,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:54,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-10-11 23:46:54,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:55,124 INFO L124 PetriNetUnfolderBase]: 1373/2587 cut-off events. [2024-10-11 23:46:55,124 INFO L125 PetriNetUnfolderBase]: For 1217/1261 co-relation queries the response was YES. [2024-10-11 23:46:55,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6184 conditions, 2587 events. 1373/2587 cut-off events. For 1217/1261 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 14758 event pairs, 528 based on Foata normal form. 76/2558 useless extension candidates. Maximal degree in co-relation 4864. Up to 1395 conditions per place. [2024-10-11 23:46:55,139 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 77 selfloop transitions, 3 changer transitions 0/94 dead transitions. [2024-10-11 23:46:55,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 94 transitions, 502 flow [2024-10-11 23:46:55,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:46:55,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:46:55,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-10-11 23:46:55,144 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6927083333333334 [2024-10-11 23:46:55,144 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 184 flow. Second operand 4 states and 133 transitions. [2024-10-11 23:46:55,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 94 transitions, 502 flow [2024-10-11 23:46:55,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 94 transitions, 496 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:46:55,149 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 206 flow [2024-10-11 23:46:55,149 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=206, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2024-10-11 23:46:55,149 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2024-10-11 23:46:55,149 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 206 flow [2024-10-11 23:46:55,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:55,150 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:55,150 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:55,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 23:46:55,150 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:46:55,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:55,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1089550929, now seen corresponding path program 1 times [2024-10-11 23:46:55,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:55,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994022247] [2024-10-11 23:46:55,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:55,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:55,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:55,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:55,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:55,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994022247] [2024-10-11 23:46:55,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994022247] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:55,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:55,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:46:55,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942151406] [2024-10-11 23:46:55,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:55,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:46:55,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:55,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:46:55,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:46:55,215 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-10-11 23:46:55,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:55,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:55,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-10-11 23:46:55,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:55,406 INFO L124 PetriNetUnfolderBase]: 675/1501 cut-off events. [2024-10-11 23:46:55,410 INFO L125 PetriNetUnfolderBase]: For 816/882 co-relation queries the response was YES. [2024-10-11 23:46:55,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3669 conditions, 1501 events. 675/1501 cut-off events. For 816/882 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 8186 event pairs, 182 based on Foata normal form. 68/1524 useless extension candidates. Maximal degree in co-relation 3273. Up to 766 conditions per place. [2024-10-11 23:46:55,417 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 48 selfloop transitions, 4 changer transitions 0/68 dead transitions. [2024-10-11 23:46:55,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 68 transitions, 361 flow [2024-10-11 23:46:55,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:46:55,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:46:55,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-10-11 23:46:55,418 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-11 23:46:55,419 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 206 flow. Second operand 3 states and 96 transitions. [2024-10-11 23:46:55,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 68 transitions, 361 flow [2024-10-11 23:46:55,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 68 transitions, 351 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-11 23:46:55,423 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 192 flow [2024-10-11 23:46:55,423 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2024-10-11 23:46:55,425 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 17 predicate places. [2024-10-11 23:46:55,426 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 192 flow [2024-10-11 23:46:55,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:55,428 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:55,429 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:55,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 23:46:55,429 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:46:55,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:55,431 INFO L85 PathProgramCache]: Analyzing trace with hash 486326307, now seen corresponding path program 1 times [2024-10-11 23:46:55,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:55,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164592199] [2024-10-11 23:46:55,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:55,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:55,523 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:55,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:55,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164592199] [2024-10-11 23:46:55,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164592199] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:46:55,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042223272] [2024-10-11 23:46:55,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:55,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:46:55,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:46:55,529 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:46:55,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 23:46:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:55,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 23:46:55,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:46:55,676 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:55,676 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:46:55,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042223272] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:55,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:46:55,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-11 23:46:55,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396223993] [2024-10-11 23:46:55,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:55,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:46:55,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:55,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:46:55,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:46:55,687 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-10-11 23:46:55,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 192 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:55,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:55,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-10-11 23:46:55,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:55,948 INFO L124 PetriNetUnfolderBase]: 1090/2324 cut-off events. [2024-10-11 23:46:55,948 INFO L125 PetriNetUnfolderBase]: For 1174/1288 co-relation queries the response was YES. [2024-10-11 23:46:55,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5758 conditions, 2324 events. 1090/2324 cut-off events. For 1174/1288 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 13595 event pairs, 217 based on Foata normal form. 18/2268 useless extension candidates. Maximal degree in co-relation 3375. Up to 854 conditions per place. [2024-10-11 23:46:55,961 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 95 selfloop transitions, 8 changer transitions 0/117 dead transitions. [2024-10-11 23:46:55,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 117 transitions, 641 flow [2024-10-11 23:46:55,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 23:46:55,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 23:46:55,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 200 transitions. [2024-10-11 23:46:55,962 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2024-10-11 23:46:55,962 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 192 flow. Second operand 7 states and 200 transitions. [2024-10-11 23:46:55,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 117 transitions, 641 flow [2024-10-11 23:46:55,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 117 transitions, 630 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:46:55,968 INFO L231 Difference]: Finished difference. Result has 71 places, 57 transitions, 245 flow [2024-10-11 23:46:55,969 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=245, PETRI_PLACES=71, PETRI_TRANSITIONS=57} [2024-10-11 23:46:55,970 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 25 predicate places. [2024-10-11 23:46:55,970 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 57 transitions, 245 flow [2024-10-11 23:46:55,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:55,970 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:55,970 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:55,983 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 23:46:56,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:46:56,172 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:46:56,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:56,172 INFO L85 PathProgramCache]: Analyzing trace with hash -2131927312, now seen corresponding path program 1 times [2024-10-11 23:46:56,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:56,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172813629] [2024-10-11 23:46:56,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:56,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:56,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:56,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:56,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:56,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172813629] [2024-10-11 23:46:56,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172813629] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:56,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:56,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 23:46:56,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477558071] [2024-10-11 23:46:56,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:56,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:46:56,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:56,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:46:56,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 23:46:56,285 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-11 23:46:56,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 57 transitions, 245 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:56,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:56,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-11 23:46:56,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:56,715 INFO L124 PetriNetUnfolderBase]: 1588/3246 cut-off events. [2024-10-11 23:46:56,716 INFO L125 PetriNetUnfolderBase]: For 2389/2601 co-relation queries the response was YES. [2024-10-11 23:46:56,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8416 conditions, 3246 events. 1588/3246 cut-off events. For 2389/2601 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 19796 event pairs, 277 based on Foata normal form. 26/3261 useless extension candidates. Maximal degree in co-relation 5459. Up to 1356 conditions per place. [2024-10-11 23:46:56,735 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 104 selfloop transitions, 9 changer transitions 0/125 dead transitions. [2024-10-11 23:46:56,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 125 transitions, 731 flow [2024-10-11 23:46:56,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 23:46:56,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 23:46:56,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2024-10-11 23:46:56,737 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5684523809523809 [2024-10-11 23:46:56,737 INFO L175 Difference]: Start difference. First operand has 71 places, 57 transitions, 245 flow. Second operand 7 states and 191 transitions. [2024-10-11 23:46:56,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 125 transitions, 731 flow [2024-10-11 23:46:56,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 125 transitions, 723 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-11 23:46:56,802 INFO L231 Difference]: Finished difference. Result has 78 places, 62 transitions, 306 flow [2024-10-11 23:46:56,802 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=306, PETRI_PLACES=78, PETRI_TRANSITIONS=62} [2024-10-11 23:46:56,803 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 32 predicate places. [2024-10-11 23:46:56,803 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 62 transitions, 306 flow [2024-10-11 23:46:56,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:56,803 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:56,803 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:56,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 23:46:56,804 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:46:56,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:56,804 INFO L85 PathProgramCache]: Analyzing trace with hash -2103753184, now seen corresponding path program 1 times [2024-10-11 23:46:56,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:56,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466089848] [2024-10-11 23:46:56,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:56,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:56,902 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:56,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:56,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466089848] [2024-10-11 23:46:56,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466089848] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:46:56,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402513898] [2024-10-11 23:46:56,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:56,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:46:56,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:46:56,908 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:46:56,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 23:46:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:56,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 23:46:56,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:46:57,030 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:57,031 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:46:57,088 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:57,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402513898] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:46:57,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:46:57,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-11 23:46:57,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579237095] [2024-10-11 23:46:57,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:46:57,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 23:46:57,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:57,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 23:46:57,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-11 23:46:57,100 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-10-11 23:46:57,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 62 transitions, 306 flow. Second operand has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:57,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:57,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-10-11 23:46:57,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:57,642 INFO L124 PetriNetUnfolderBase]: 2388/5060 cut-off events. [2024-10-11 23:46:57,642 INFO L125 PetriNetUnfolderBase]: For 5164/5482 co-relation queries the response was YES. [2024-10-11 23:46:57,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13577 conditions, 5060 events. 2388/5060 cut-off events. For 5164/5482 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 32525 event pairs, 463 based on Foata normal form. 90/5129 useless extension candidates. Maximal degree in co-relation 9310. Up to 1332 conditions per place. [2024-10-11 23:46:57,666 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 165 selfloop transitions, 18 changer transitions 0/198 dead transitions. [2024-10-11 23:46:57,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 198 transitions, 1222 flow [2024-10-11 23:46:57,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 23:46:57,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 23:46:57,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 332 transitions. [2024-10-11 23:46:57,667 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6287878787878788 [2024-10-11 23:46:57,667 INFO L175 Difference]: Start difference. First operand has 78 places, 62 transitions, 306 flow. Second operand 11 states and 332 transitions. [2024-10-11 23:46:57,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 198 transitions, 1222 flow [2024-10-11 23:46:57,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 198 transitions, 1214 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-11 23:46:57,678 INFO L231 Difference]: Finished difference. Result has 90 places, 73 transitions, 458 flow [2024-10-11 23:46:57,678 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=458, PETRI_PLACES=90, PETRI_TRANSITIONS=73} [2024-10-11 23:46:57,679 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 44 predicate places. [2024-10-11 23:46:57,679 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 73 transitions, 458 flow [2024-10-11 23:46:57,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.083333333333332) internal successors, (229), 12 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:57,679 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:57,680 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:57,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 23:46:57,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:46:57,884 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:46:57,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:57,884 INFO L85 PathProgramCache]: Analyzing trace with hash 351154647, now seen corresponding path program 1 times [2024-10-11 23:46:57,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:57,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938969436] [2024-10-11 23:46:57,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:57,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:57,940 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:57,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:57,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938969436] [2024-10-11 23:46:57,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938969436] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:46:57,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369414989] [2024-10-11 23:46:57,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:57,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:46:57,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:46:57,943 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:46:57,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 23:46:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:58,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 23:46:58,010 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:46:58,048 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:58,049 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:46:58,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369414989] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:58,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:46:58,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-11 23:46:58,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508652799] [2024-10-11 23:46:58,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:58,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 23:46:58,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:58,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 23:46:58,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-11 23:46:58,055 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-11 23:46:58,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 73 transitions, 458 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:58,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:58,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-11 23:46:58,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:58,505 INFO L124 PetriNetUnfolderBase]: 2909/5735 cut-off events. [2024-10-11 23:46:58,505 INFO L125 PetriNetUnfolderBase]: For 8356/8659 co-relation queries the response was YES. [2024-10-11 23:46:58,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16125 conditions, 5735 events. 2909/5735 cut-off events. For 8356/8659 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 35997 event pairs, 352 based on Foata normal form. 128/5730 useless extension candidates. Maximal degree in co-relation 14318. Up to 2833 conditions per place. [2024-10-11 23:46:58,532 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 109 selfloop transitions, 5 changer transitions 0/129 dead transitions. [2024-10-11 23:46:58,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 129 transitions, 1132 flow [2024-10-11 23:46:58,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:46:58,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:46:58,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-10-11 23:46:58,533 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-10-11 23:46:58,533 INFO L175 Difference]: Start difference. First operand has 90 places, 73 transitions, 458 flow. Second operand 4 states and 117 transitions. [2024-10-11 23:46:58,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 129 transitions, 1132 flow [2024-10-11 23:46:58,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 129 transitions, 1092 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-10-11 23:46:58,548 INFO L231 Difference]: Finished difference. Result has 90 places, 72 transitions, 450 flow [2024-10-11 23:46:58,549 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=450, PETRI_PLACES=90, PETRI_TRANSITIONS=72} [2024-10-11 23:46:58,549 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 44 predicate places. [2024-10-11 23:46:58,549 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 72 transitions, 450 flow [2024-10-11 23:46:58,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:58,550 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:58,550 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] [2024-10-11 23:46:58,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 23:46:58,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:46:58,751 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:46:58,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:58,751 INFO L85 PathProgramCache]: Analyzing trace with hash 734924314, now seen corresponding path program 1 times [2024-10-11 23:46:58,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:58,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643527085] [2024-10-11 23:46:58,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:58,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:58,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:58,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:46:58,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:58,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643527085] [2024-10-11 23:46:58,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643527085] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:58,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:58,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 23:46:58,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166116864] [2024-10-11 23:46:58,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:58,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:46:58,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:58,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:46:58,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 23:46:58,819 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-11 23:46:58,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 72 transitions, 450 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:58,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:58,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-11 23:46:58,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:46:59,436 INFO L124 PetriNetUnfolderBase]: 2729/5487 cut-off events. [2024-10-11 23:46:59,437 INFO L125 PetriNetUnfolderBase]: For 8716/9042 co-relation queries the response was YES. [2024-10-11 23:46:59,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16030 conditions, 5487 events. 2729/5487 cut-off events. For 8716/9042 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 34117 event pairs, 607 based on Foata normal form. 39/5505 useless extension candidates. Maximal degree in co-relation 13829. Up to 3204 conditions per place. [2024-10-11 23:46:59,465 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 112 selfloop transitions, 10 changer transitions 0/133 dead transitions. [2024-10-11 23:46:59,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 133 transitions, 955 flow [2024-10-11 23:46:59,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 23:46:59,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 23:46:59,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-10-11 23:46:59,467 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-10-11 23:46:59,467 INFO L175 Difference]: Start difference. First operand has 90 places, 72 transitions, 450 flow. Second operand 7 states and 192 transitions. [2024-10-11 23:46:59,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 133 transitions, 955 flow [2024-10-11 23:46:59,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 133 transitions, 915 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 23:46:59,483 INFO L231 Difference]: Finished difference. Result has 96 places, 77 transitions, 517 flow [2024-10-11 23:46:59,484 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=517, PETRI_PLACES=96, PETRI_TRANSITIONS=77} [2024-10-11 23:46:59,484 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 50 predicate places. [2024-10-11 23:46:59,484 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 77 transitions, 517 flow [2024-10-11 23:46:59,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:59,485 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:46:59,485 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:46:59,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 23:46:59,485 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:46:59,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:46:59,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1999107323, now seen corresponding path program 1 times [2024-10-11 23:46:59,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:46:59,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417972553] [2024-10-11 23:46:59,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:46:59,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:46:59,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:46:59,527 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 23:46:59,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:46:59,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417972553] [2024-10-11 23:46:59,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417972553] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:46:59,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:46:59,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:46:59,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805778174] [2024-10-11 23:46:59,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:46:59,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:46:59,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:46:59,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:46:59,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:46:59,538 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-11 23:46:59,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 77 transitions, 517 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:46:59,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:46:59,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-11 23:46:59,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:00,152 INFO L124 PetriNetUnfolderBase]: 2817/5772 cut-off events. [2024-10-11 23:47:00,152 INFO L125 PetriNetUnfolderBase]: For 8919/9153 co-relation queries the response was YES. [2024-10-11 23:47:00,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16297 conditions, 5772 events. 2817/5772 cut-off events. For 8919/9153 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 37473 event pairs, 491 based on Foata normal form. 0/5771 useless extension candidates. Maximal degree in co-relation 14454. Up to 2770 conditions per place. [2024-10-11 23:47:00,178 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 117 selfloop transitions, 6 changer transitions 0/139 dead transitions. [2024-10-11 23:47:00,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 139 transitions, 1257 flow [2024-10-11 23:47:00,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:47:00,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:47:00,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-10-11 23:47:00,179 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-10-11 23:47:00,179 INFO L175 Difference]: Start difference. First operand has 96 places, 77 transitions, 517 flow. Second operand 4 states and 117 transitions. [2024-10-11 23:47:00,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 139 transitions, 1257 flow [2024-10-11 23:47:00,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 139 transitions, 1239 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-11 23:47:00,199 INFO L231 Difference]: Finished difference. Result has 97 places, 77 transitions, 525 flow [2024-10-11 23:47:00,199 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=525, PETRI_PLACES=97, PETRI_TRANSITIONS=77} [2024-10-11 23:47:00,200 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 51 predicate places. [2024-10-11 23:47:00,200 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 77 transitions, 525 flow [2024-10-11 23:47:00,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:00,200 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:00,200 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-11 23:47:00,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 23:47:00,200 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:47:00,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:00,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1708406363, now seen corresponding path program 1 times [2024-10-11 23:47:00,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:00,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861857213] [2024-10-11 23:47:00,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:00,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:00,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:00,317 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:00,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:00,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861857213] [2024-10-11 23:47:00,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861857213] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:47:00,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756613341] [2024-10-11 23:47:00,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:00,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:00,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:47:00,320 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:47:00,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 23:47:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:00,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 23:47:00,397 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:47:00,446 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:00,446 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:47:00,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756613341] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:47:00,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:47:00,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-11 23:47:00,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983058572] [2024-10-11 23:47:00,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:47:00,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 23:47:00,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:00,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 23:47:00,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-11 23:47:00,460 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-11 23:47:00,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 77 transitions, 525 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:00,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:00,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-11 23:47:00,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:01,062 INFO L124 PetriNetUnfolderBase]: 3216/6078 cut-off events. [2024-10-11 23:47:01,062 INFO L125 PetriNetUnfolderBase]: For 11368/11398 co-relation queries the response was YES. [2024-10-11 23:47:01,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18567 conditions, 6078 events. 3216/6078 cut-off events. For 11368/11398 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 37727 event pairs, 473 based on Foata normal form. 178/6078 useless extension candidates. Maximal degree in co-relation 17689. Up to 3558 conditions per place. [2024-10-11 23:47:01,100 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 95 selfloop transitions, 5 changer transitions 0/115 dead transitions. [2024-10-11 23:47:01,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 115 transitions, 958 flow [2024-10-11 23:47:01,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:47:01,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:47:01,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-10-11 23:47:01,101 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-10-11 23:47:01,101 INFO L175 Difference]: Start difference. First operand has 97 places, 77 transitions, 525 flow. Second operand 4 states and 117 transitions. [2024-10-11 23:47:01,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 115 transitions, 958 flow [2024-10-11 23:47:01,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 115 transitions, 936 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:47:01,121 INFO L231 Difference]: Finished difference. Result has 97 places, 76 transitions, 523 flow [2024-10-11 23:47:01,121 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=523, PETRI_PLACES=97, PETRI_TRANSITIONS=76} [2024-10-11 23:47:01,122 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 51 predicate places. [2024-10-11 23:47:01,122 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 76 transitions, 523 flow [2024-10-11 23:47:01,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:01,122 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:01,122 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-11 23:47:01,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 23:47:01,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-11 23:47:01,327 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:47:01,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:01,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1420989213, now seen corresponding path program 1 times [2024-10-11 23:47:01,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:01,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995134800] [2024-10-11 23:47:01,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:01,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:01,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:01,364 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 23:47:01,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:01,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995134800] [2024-10-11 23:47:01,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995134800] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:47:01,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:47:01,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:47:01,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424831895] [2024-10-11 23:47:01,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:47:01,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:47:01,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:01,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:47:01,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:47:01,370 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-11 23:47:01,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 76 transitions, 523 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:01,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:01,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-11 23:47:01,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:01,829 INFO L124 PetriNetUnfolderBase]: 2958/5690 cut-off events. [2024-10-11 23:47:01,829 INFO L125 PetriNetUnfolderBase]: For 10230/10275 co-relation queries the response was YES. [2024-10-11 23:47:01,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17208 conditions, 5690 events. 2958/5690 cut-off events. For 10230/10275 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 34817 event pairs, 686 based on Foata normal form. 178/5868 useless extension candidates. Maximal degree in co-relation 14585. Up to 2720 conditions per place. [2024-10-11 23:47:01,865 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 107 selfloop transitions, 6 changer transitions 0/128 dead transitions. [2024-10-11 23:47:01,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 128 transitions, 1085 flow [2024-10-11 23:47:01,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:47:01,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:47:01,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-10-11 23:47:01,866 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6197916666666666 [2024-10-11 23:47:01,866 INFO L175 Difference]: Start difference. First operand has 97 places, 76 transitions, 523 flow. Second operand 4 states and 119 transitions. [2024-10-11 23:47:01,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 128 transitions, 1085 flow [2024-10-11 23:47:01,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 128 transitions, 1075 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 23:47:01,888 INFO L231 Difference]: Finished difference. Result has 97 places, 76 transitions, 529 flow [2024-10-11 23:47:01,888 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=529, PETRI_PLACES=97, PETRI_TRANSITIONS=76} [2024-10-11 23:47:01,888 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 51 predicate places. [2024-10-11 23:47:01,889 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 76 transitions, 529 flow [2024-10-11 23:47:01,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:01,889 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:01,889 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] [2024-10-11 23:47:01,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 23:47:01,889 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:47:01,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:01,889 INFO L85 PathProgramCache]: Analyzing trace with hash -128209080, now seen corresponding path program 1 times [2024-10-11 23:47:01,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:01,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379513370] [2024-10-11 23:47:01,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:01,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:02,008 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:02,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:02,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379513370] [2024-10-11 23:47:02,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379513370] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:47:02,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449460436] [2024-10-11 23:47:02,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:02,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:02,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:47:02,011 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:47:02,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 23:47:02,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:02,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 23:47:02,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:47:02,175 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:02,175 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:47:02,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449460436] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:47:02,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:47:02,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-10-11 23:47:02,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516898076] [2024-10-11 23:47:02,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:47:02,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 23:47:02,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:02,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 23:47:02,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-11 23:47:02,199 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-11 23:47:02,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 76 transitions, 529 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:02,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:02,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-11 23:47:02,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:03,258 INFO L124 PetriNetUnfolderBase]: 3173/6158 cut-off events. [2024-10-11 23:47:03,259 INFO L125 PetriNetUnfolderBase]: For 12600/12600 co-relation queries the response was YES. [2024-10-11 23:47:03,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19213 conditions, 6158 events. 3173/6158 cut-off events. For 12600/12600 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 38021 event pairs, 559 based on Foata normal form. 87/6220 useless extension candidates. Maximal degree in co-relation 16376. Up to 2456 conditions per place. [2024-10-11 23:47:03,301 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 156 selfloop transitions, 30 changer transitions 0/196 dead transitions. [2024-10-11 23:47:03,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 196 transitions, 1466 flow [2024-10-11 23:47:03,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 23:47:03,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 23:47:03,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 311 transitions. [2024-10-11 23:47:03,303 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5399305555555556 [2024-10-11 23:47:03,303 INFO L175 Difference]: Start difference. First operand has 97 places, 76 transitions, 529 flow. Second operand 12 states and 311 transitions. [2024-10-11 23:47:03,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 196 transitions, 1466 flow [2024-10-11 23:47:03,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 196 transitions, 1438 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-11 23:47:03,330 INFO L231 Difference]: Finished difference. Result has 111 places, 88 transitions, 741 flow [2024-10-11 23:47:03,330 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=741, PETRI_PLACES=111, PETRI_TRANSITIONS=88} [2024-10-11 23:47:03,330 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 65 predicate places. [2024-10-11 23:47:03,330 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 88 transitions, 741 flow [2024-10-11 23:47:03,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:03,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:03,331 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-10-11 23:47:03,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 23:47:03,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-11 23:47:03,536 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:47:03,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:03,536 INFO L85 PathProgramCache]: Analyzing trace with hash -389193938, now seen corresponding path program 1 times [2024-10-11 23:47:03,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:03,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358187950] [2024-10-11 23:47:03,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:03,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:03,698 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:03,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:03,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358187950] [2024-10-11 23:47:03,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358187950] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:47:03,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063459385] [2024-10-11 23:47:03,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:03,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:03,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:47:03,703 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:47:03,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 23:47:03,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:03,817 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 23:47:03,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:47:03,953 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 23:47:03,954 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:47:03,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063459385] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:47:03,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:47:03,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2024-10-11 23:47:03,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67341072] [2024-10-11 23:47:03,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:47:03,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:47:03,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:03,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:47:03,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:47:03,987 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-11 23:47:03,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 88 transitions, 741 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:03,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:03,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-11 23:47:03,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:05,173 INFO L124 PetriNetUnfolderBase]: 3768/7352 cut-off events. [2024-10-11 23:47:05,173 INFO L125 PetriNetUnfolderBase]: For 18741/18741 co-relation queries the response was YES. [2024-10-11 23:47:05,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23525 conditions, 7352 events. 3768/7352 cut-off events. For 18741/18741 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 48536 event pairs, 697 based on Foata normal form. 41/7368 useless extension candidates. Maximal degree in co-relation 20425. Up to 3410 conditions per place. [2024-10-11 23:47:05,231 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 136 selfloop transitions, 42 changer transitions 0/188 dead transitions. [2024-10-11 23:47:05,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 188 transitions, 1623 flow [2024-10-11 23:47:05,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 23:47:05,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 23:47:05,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 258 transitions. [2024-10-11 23:47:05,233 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-10-11 23:47:05,233 INFO L175 Difference]: Start difference. First operand has 111 places, 88 transitions, 741 flow. Second operand 10 states and 258 transitions. [2024-10-11 23:47:05,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 188 transitions, 1623 flow [2024-10-11 23:47:05,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 188 transitions, 1581 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-10-11 23:47:05,267 INFO L231 Difference]: Finished difference. Result has 123 places, 102 transitions, 1035 flow [2024-10-11 23:47:05,267 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1035, PETRI_PLACES=123, PETRI_TRANSITIONS=102} [2024-10-11 23:47:05,267 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 77 predicate places. [2024-10-11 23:47:05,267 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 102 transitions, 1035 flow [2024-10-11 23:47:05,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:05,268 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:05,268 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-10-11 23:47:05,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 23:47:05,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-11 23:47:05,469 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:47:05,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:05,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1273263891, now seen corresponding path program 1 times [2024-10-11 23:47:05,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:05,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489511694] [2024-10-11 23:47:05,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:05,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:05,590 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:05,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:05,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489511694] [2024-10-11 23:47:05,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489511694] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:47:05,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414237008] [2024-10-11 23:47:05,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:05,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:05,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:47:05,595 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:47:05,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 23:47:05,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:05,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 23:47:05,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:47:05,714 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 23:47:05,714 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:47:05,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414237008] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:47:05,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:47:05,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2024-10-11 23:47:05,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364690768] [2024-10-11 23:47:05,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:47:05,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:47:05,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:05,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:47:05,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 23:47:05,723 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-11 23:47:05,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 102 transitions, 1035 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:05,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:05,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-11 23:47:05,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:06,644 INFO L124 PetriNetUnfolderBase]: 4482/8745 cut-off events. [2024-10-11 23:47:06,644 INFO L125 PetriNetUnfolderBase]: For 30163/30163 co-relation queries the response was YES. [2024-10-11 23:47:06,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28860 conditions, 8745 events. 4482/8745 cut-off events. For 30163/30163 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 58582 event pairs, 1190 based on Foata normal form. 108/8824 useless extension candidates. Maximal degree in co-relation 25655. Up to 4628 conditions per place. [2024-10-11 23:47:06,709 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 166 selfloop transitions, 27 changer transitions 0/203 dead transitions. [2024-10-11 23:47:06,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 203 transitions, 1988 flow [2024-10-11 23:47:06,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 23:47:06,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 23:47:06,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 258 transitions. [2024-10-11 23:47:06,713 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-10-11 23:47:06,713 INFO L175 Difference]: Start difference. First operand has 123 places, 102 transitions, 1035 flow. Second operand 10 states and 258 transitions. [2024-10-11 23:47:06,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 203 transitions, 1988 flow [2024-10-11 23:47:06,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 203 transitions, 1910 flow, removed 31 selfloop flow, removed 2 redundant places. [2024-10-11 23:47:06,762 INFO L231 Difference]: Finished difference. Result has 136 places, 118 transitions, 1297 flow [2024-10-11 23:47:06,762 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=989, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1297, PETRI_PLACES=136, PETRI_TRANSITIONS=118} [2024-10-11 23:47:06,763 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 90 predicate places. [2024-10-11 23:47:06,763 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 118 transitions, 1297 flow [2024-10-11 23:47:06,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:06,763 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:06,763 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-10-11 23:47:06,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-11 23:47:06,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:06,964 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:47:06,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:06,964 INFO L85 PathProgramCache]: Analyzing trace with hash 2014709815, now seen corresponding path program 1 times [2024-10-11 23:47:06,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:06,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016602376] [2024-10-11 23:47:06,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:06,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:07,100 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:07,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:07,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016602376] [2024-10-11 23:47:07,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016602376] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:47:07,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360384868] [2024-10-11 23:47:07,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:07,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:07,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:47:07,103 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:47:07,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 23:47:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:07,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 23:47:07,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:47:07,247 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:07,247 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:47:07,313 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:07,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360384868] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:47:07,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:47:07,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2024-10-11 23:47:07,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407244089] [2024-10-11 23:47:07,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:47:07,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 23:47:07,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:07,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 23:47:07,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-10-11 23:47:07,333 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-11 23:47:07,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 118 transitions, 1297 flow. Second operand has 14 states, 14 states have (on average 17.285714285714285) internal successors, (242), 14 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:07,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:07,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-11 23:47:07,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:08,860 INFO L124 PetriNetUnfolderBase]: 6007/11444 cut-off events. [2024-10-11 23:47:08,860 INFO L125 PetriNetUnfolderBase]: For 35970/35970 co-relation queries the response was YES. [2024-10-11 23:47:08,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37703 conditions, 11444 events. 6007/11444 cut-off events. For 35970/35970 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 76450 event pairs, 1017 based on Foata normal form. 155/11568 useless extension candidates. Maximal degree in co-relation 34390. Up to 3762 conditions per place. [2024-10-11 23:47:08,931 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 249 selfloop transitions, 87 changer transitions 0/345 dead transitions. [2024-10-11 23:47:08,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 345 transitions, 3206 flow [2024-10-11 23:47:08,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-11 23:47:08,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-11 23:47:08,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 545 transitions. [2024-10-11 23:47:08,933 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4730902777777778 [2024-10-11 23:47:08,933 INFO L175 Difference]: Start difference. First operand has 136 places, 118 transitions, 1297 flow. Second operand 24 states and 545 transitions. [2024-10-11 23:47:08,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 345 transitions, 3206 flow [2024-10-11 23:47:09,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 345 transitions, 3128 flow, removed 39 selfloop flow, removed 0 redundant places. [2024-10-11 23:47:09,023 INFO L231 Difference]: Finished difference. Result has 166 places, 153 transitions, 1960 flow [2024-10-11 23:47:09,026 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1265, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1960, PETRI_PLACES=166, PETRI_TRANSITIONS=153} [2024-10-11 23:47:09,026 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 120 predicate places. [2024-10-11 23:47:09,027 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 153 transitions, 1960 flow [2024-10-11 23:47:09,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.285714285714285) internal successors, (242), 14 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:09,027 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:09,028 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] [2024-10-11 23:47:09,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-11 23:47:09,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-11 23:47:09,229 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:47:09,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:09,229 INFO L85 PathProgramCache]: Analyzing trace with hash 221973992, now seen corresponding path program 1 times [2024-10-11 23:47:09,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:09,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571185353] [2024-10-11 23:47:09,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:09,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:09,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:09,337 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:09,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:09,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571185353] [2024-10-11 23:47:09,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571185353] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:47:09,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576583913] [2024-10-11 23:47:09,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:09,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:09,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:47:09,339 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:47:09,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 23:47:09,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:09,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 23:47:09,421 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:47:09,480 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:09,481 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:47:09,555 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:09,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576583913] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:47:09,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:47:09,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-10-11 23:47:09,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907280641] [2024-10-11 23:47:09,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:47:09,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 23:47:09,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:09,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 23:47:09,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2024-10-11 23:47:09,582 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-11 23:47:09,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 153 transitions, 1960 flow. Second operand has 16 states, 16 states have (on average 17.625) internal successors, (282), 16 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:09,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:09,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-11 23:47:09,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:11,652 INFO L124 PetriNetUnfolderBase]: 6678/13117 cut-off events. [2024-10-11 23:47:11,652 INFO L125 PetriNetUnfolderBase]: For 56747/56747 co-relation queries the response was YES. [2024-10-11 23:47:11,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43536 conditions, 13117 events. 6678/13117 cut-off events. For 56747/56747 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 90813 event pairs, 1379 based on Foata normal form. 372/13452 useless extension candidates. Maximal degree in co-relation 42206. Up to 3250 conditions per place. [2024-10-11 23:47:11,778 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 204 selfloop transitions, 128 changer transitions 0/343 dead transitions. [2024-10-11 23:47:11,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 343 transitions, 3635 flow [2024-10-11 23:47:11,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-11 23:47:11,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-11 23:47:11,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 484 transitions. [2024-10-11 23:47:11,781 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5041666666666667 [2024-10-11 23:47:11,781 INFO L175 Difference]: Start difference. First operand has 166 places, 153 transitions, 1960 flow. Second operand 20 states and 484 transitions. [2024-10-11 23:47:11,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 343 transitions, 3635 flow [2024-10-11 23:47:11,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 343 transitions, 3324 flow, removed 84 selfloop flow, removed 10 redundant places. [2024-10-11 23:47:11,920 INFO L231 Difference]: Finished difference. Result has 168 places, 177 transitions, 2296 flow [2024-10-11 23:47:11,921 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1602, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2296, PETRI_PLACES=168, PETRI_TRANSITIONS=177} [2024-10-11 23:47:11,921 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 122 predicate places. [2024-10-11 23:47:11,921 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 177 transitions, 2296 flow [2024-10-11 23:47:11,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 17.625) internal successors, (282), 16 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:11,922 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:11,922 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2024-10-11 23:47:11,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-11 23:47:12,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 23:47:12,122 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:47:12,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:12,123 INFO L85 PathProgramCache]: Analyzing trace with hash -712534582, now seen corresponding path program 2 times [2024-10-11 23:47:12,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:12,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641981192] [2024-10-11 23:47:12,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:12,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:12,333 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:12,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:12,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641981192] [2024-10-11 23:47:12,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641981192] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:47:12,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120534874] [2024-10-11 23:47:12,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 23:47:12,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:12,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:47:12,338 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:47:12,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 23:47:12,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 23:47:12,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 23:47:12,449 INFO L255 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 23:47:12,451 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:47:12,521 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:12,522 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:47:12,667 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:12,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120534874] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:47:12,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:47:12,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-10-11 23:47:12,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532801910] [2024-10-11 23:47:12,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:47:12,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-11 23:47:12,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:12,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-11 23:47:12,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-10-11 23:47:12,685 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-10-11 23:47:12,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 177 transitions, 2296 flow. Second operand has 24 states, 24 states have (on average 19.541666666666668) internal successors, (469), 24 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:12,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:12,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-10-11 23:47:12,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:15,305 INFO L124 PetriNetUnfolderBase]: 9201/18128 cut-off events. [2024-10-11 23:47:15,305 INFO L125 PetriNetUnfolderBase]: For 68424/68424 co-relation queries the response was YES. [2024-10-11 23:47:15,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60868 conditions, 18128 events. 9201/18128 cut-off events. For 68424/68424 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 126753 event pairs, 2769 based on Foata normal form. 144/18207 useless extension candidates. Maximal degree in co-relation 59473. Up to 8416 conditions per place. [2024-10-11 23:47:15,511 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 448 selfloop transitions, 54 changer transitions 0/517 dead transitions. [2024-10-11 23:47:15,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 517 transitions, 5082 flow [2024-10-11 23:47:15,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 23:47:15,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-11 23:47:15,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 717 transitions. [2024-10-11 23:47:15,518 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6494565217391305 [2024-10-11 23:47:15,518 INFO L175 Difference]: Start difference. First operand has 168 places, 177 transitions, 2296 flow. Second operand 23 states and 717 transitions. [2024-10-11 23:47:15,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 517 transitions, 5082 flow [2024-10-11 23:47:15,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 517 transitions, 4787 flow, removed 124 selfloop flow, removed 6 redundant places. [2024-10-11 23:47:15,800 INFO L231 Difference]: Finished difference. Result has 190 places, 203 transitions, 2614 flow [2024-10-11 23:47:15,800 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2063, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2614, PETRI_PLACES=190, PETRI_TRANSITIONS=203} [2024-10-11 23:47:15,801 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 144 predicate places. [2024-10-11 23:47:15,801 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 203 transitions, 2614 flow [2024-10-11 23:47:15,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 19.541666666666668) internal successors, (469), 24 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:15,802 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:15,802 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:47:15,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-11 23:47:16,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:16,007 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:47:16,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:16,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1186324279, now seen corresponding path program 2 times [2024-10-11 23:47:16,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:16,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459170595] [2024-10-11 23:47:16,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:16,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:16,146 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 23:47:16,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:16,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459170595] [2024-10-11 23:47:16,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459170595] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:47:16,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338149051] [2024-10-11 23:47:16,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 23:47:16,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:16,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:47:16,149 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:47:16,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 23:47:16,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 23:47:16,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 23:47:16,252 INFO L255 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 23:47:16,253 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:47:16,297 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 23:47:16,297 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:47:16,387 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 23:47:16,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338149051] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:47:16,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:47:16,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 16 [2024-10-11 23:47:16,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198891083] [2024-10-11 23:47:16,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:47:16,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 23:47:16,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:16,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 23:47:16,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-10-11 23:47:16,412 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-11 23:47:16,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 203 transitions, 2614 flow. Second operand has 18 states, 18 states have (on average 18.11111111111111) internal successors, (326), 18 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:16,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:16,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-11 23:47:16,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:20,845 INFO L124 PetriNetUnfolderBase]: 13004/25420 cut-off events. [2024-10-11 23:47:20,845 INFO L125 PetriNetUnfolderBase]: For 89725/89725 co-relation queries the response was YES. [2024-10-11 23:47:21,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83611 conditions, 25420 events. 13004/25420 cut-off events. For 89725/89725 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 188105 event pairs, 1941 based on Foata normal form. 192/25536 useless extension candidates. Maximal degree in co-relation 81701. Up to 5478 conditions per place. [2024-10-11 23:47:21,093 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 372 selfloop transitions, 200 changer transitions 0/583 dead transitions. [2024-10-11 23:47:21,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 583 transitions, 6175 flow [2024-10-11 23:47:21,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-11 23:47:21,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-10-11 23:47:21,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 774 transitions. [2024-10-11 23:47:21,095 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.50390625 [2024-10-11 23:47:21,095 INFO L175 Difference]: Start difference. First operand has 190 places, 203 transitions, 2614 flow. Second operand 32 states and 774 transitions. [2024-10-11 23:47:21,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 583 transitions, 6175 flow [2024-10-11 23:47:21,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 583 transitions, 6042 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-10-11 23:47:21,481 INFO L231 Difference]: Finished difference. Result has 223 places, 300 transitions, 4513 flow [2024-10-11 23:47:21,482 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2519, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=4513, PETRI_PLACES=223, PETRI_TRANSITIONS=300} [2024-10-11 23:47:21,482 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 177 predicate places. [2024-10-11 23:47:21,482 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 300 transitions, 4513 flow [2024-10-11 23:47:21,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 18.11111111111111) internal successors, (326), 18 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:21,483 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:21,483 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:47:21,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-11 23:47:21,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:21,687 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:47:21,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:21,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1765419543, now seen corresponding path program 1 times [2024-10-11 23:47:21,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:21,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455803625] [2024-10-11 23:47:21,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:21,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:21,909 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:21,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:21,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455803625] [2024-10-11 23:47:21,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455803625] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:47:21,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148690938] [2024-10-11 23:47:21,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:21,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:21,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:47:21,912 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:47:21,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-11 23:47:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:22,026 INFO L255 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 23:47:22,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:47:22,114 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:22,114 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:47:22,299 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:47:22,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148690938] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:47:22,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:47:22,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 24 [2024-10-11 23:47:22,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825467384] [2024-10-11 23:47:22,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:47:22,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-11 23:47:22,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:22,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-11 23:47:22,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2024-10-11 23:47:22,313 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-10-11 23:47:22,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 300 transitions, 4513 flow. Second operand has 26 states, 26 states have (on average 16.5) internal successors, (429), 26 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:22,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:22,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-10-11 23:47:22,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:30,906 INFO L124 PetriNetUnfolderBase]: 21156/39146 cut-off events. [2024-10-11 23:47:30,906 INFO L125 PetriNetUnfolderBase]: For 144153/144153 co-relation queries the response was YES. [2024-10-11 23:47:31,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131852 conditions, 39146 events. 21156/39146 cut-off events. For 144153/144153 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 296174 event pairs, 3479 based on Foata normal form. 573/39613 useless extension candidates. Maximal degree in co-relation 129806. Up to 10620 conditions per place. [2024-10-11 23:47:31,353 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 382 selfloop transitions, 387 changer transitions 0/777 dead transitions. [2024-10-11 23:47:31,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 777 transitions, 9610 flow [2024-10-11 23:47:31,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-10-11 23:47:31,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-10-11 23:47:31,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 842 transitions. [2024-10-11 23:47:31,355 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4497863247863248 [2024-10-11 23:47:31,356 INFO L175 Difference]: Start difference. First operand has 223 places, 300 transitions, 4513 flow. Second operand 39 states and 842 transitions. [2024-10-11 23:47:31,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 777 transitions, 9610 flow [2024-10-11 23:47:32,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 777 transitions, 9067 flow, removed 125 selfloop flow, removed 13 redundant places. [2024-10-11 23:47:32,069 INFO L231 Difference]: Finished difference. Result has 240 places, 454 transitions, 7145 flow [2024-10-11 23:47:32,069 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3971, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=7145, PETRI_PLACES=240, PETRI_TRANSITIONS=454} [2024-10-11 23:47:32,069 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 194 predicate places. [2024-10-11 23:47:32,070 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 454 transitions, 7145 flow [2024-10-11 23:47:32,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 16.5) internal successors, (429), 26 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:32,070 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:32,070 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:47:32,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-11 23:47:32,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:32,271 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:47:32,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:32,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1918904441, now seen corresponding path program 3 times [2024-10-11 23:47:32,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:32,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525329432] [2024-10-11 23:47:32,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:32,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:32,487 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 23:47:32,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:32,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525329432] [2024-10-11 23:47:32,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525329432] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:47:32,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797832338] [2024-10-11 23:47:32,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 23:47:32,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:32,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:47:32,489 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:47:32,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-11 23:47:32,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 23:47:32,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 23:47:32,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 23:47:32,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:47:32,644 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-10-11 23:47:32,645 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:47:32,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797832338] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:47:32,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:47:32,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 17 [2024-10-11 23:47:32,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708441885] [2024-10-11 23:47:32,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:47:32,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 23:47:32,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:32,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 23:47:32,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2024-10-11 23:47:32,657 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-11 23:47:32,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 454 transitions, 7145 flow. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:32,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:32,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-11 23:47:32,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:39,923 INFO L124 PetriNetUnfolderBase]: 19279/37889 cut-off events. [2024-10-11 23:47:39,924 INFO L125 PetriNetUnfolderBase]: For 163082/163082 co-relation queries the response was YES. [2024-10-11 23:47:40,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128718 conditions, 37889 events. 19279/37889 cut-off events. For 163082/163082 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 305858 event pairs, 4198 based on Foata normal form. 76/37832 useless extension candidates. Maximal degree in co-relation 125499. Up to 18144 conditions per place. [2024-10-11 23:47:40,298 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 213 selfloop transitions, 283 changer transitions 0/508 dead transitions. [2024-10-11 23:47:40,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 508 transitions, 8425 flow [2024-10-11 23:47:40,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 23:47:40,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 23:47:40,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-10-11 23:47:40,300 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-10-11 23:47:40,300 INFO L175 Difference]: Start difference. First operand has 240 places, 454 transitions, 7145 flow. Second operand 7 states and 172 transitions. [2024-10-11 23:47:40,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 508 transitions, 8425 flow [2024-10-11 23:47:41,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 508 transitions, 7671 flow, removed 199 selfloop flow, removed 10 redundant places. [2024-10-11 23:47:41,153 INFO L231 Difference]: Finished difference. Result has 234 places, 458 transitions, 7370 flow [2024-10-11 23:47:41,154 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6259, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=273, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7370, PETRI_PLACES=234, PETRI_TRANSITIONS=458} [2024-10-11 23:47:41,154 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 188 predicate places. [2024-10-11 23:47:41,155 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 458 transitions, 7370 flow [2024-10-11 23:47:41,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:41,155 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:41,155 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:47:41,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-11 23:47:41,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:41,360 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:47:41,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:41,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1520662071, now seen corresponding path program 4 times [2024-10-11 23:47:41,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:41,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100086241] [2024-10-11 23:47:41,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:41,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:41,589 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 23:47:41,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:41,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100086241] [2024-10-11 23:47:41,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100086241] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:47:41,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241311180] [2024-10-11 23:47:41,590 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 23:47:41,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:41,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:47:41,591 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:47:41,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-11 23:47:41,717 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 23:47:41,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 23:47:41,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 23:47:41,723 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:47:41,800 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 23:47:41,801 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:47:42,100 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 23:47:42,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241311180] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:47:42,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:47:42,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2024-10-11 23:47:42,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835744621] [2024-10-11 23:47:42,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:47:42,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-11 23:47:42,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:42,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-11 23:47:42,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2024-10-11 23:47:42,131 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-11 23:47:42,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 458 transitions, 7370 flow. Second operand has 26 states, 26 states have (on average 18.076923076923077) internal successors, (470), 26 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:42,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:42,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-11 23:47:42,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:47:56,049 INFO L124 PetriNetUnfolderBase]: 29360/57195 cut-off events. [2024-10-11 23:47:56,050 INFO L125 PetriNetUnfolderBase]: For 260159/260159 co-relation queries the response was YES. [2024-10-11 23:47:56,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195716 conditions, 57195 events. 29360/57195 cut-off events. For 260159/260159 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 472326 event pairs, 4712 based on Foata normal form. 432/57446 useless extension candidates. Maximal degree in co-relation 192452. Up to 8960 conditions per place. [2024-10-11 23:47:56,725 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 510 selfloop transitions, 597 changer transitions 0/1119 dead transitions. [2024-10-11 23:47:56,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 1119 transitions, 15695 flow [2024-10-11 23:47:56,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-11 23:47:56,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-10-11 23:47:56,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 947 transitions. [2024-10-11 23:47:56,731 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5332207207207207 [2024-10-11 23:47:56,731 INFO L175 Difference]: Start difference. First operand has 234 places, 458 transitions, 7370 flow. Second operand 37 states and 947 transitions. [2024-10-11 23:47:56,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 1119 transitions, 15695 flow [2024-10-11 23:47:58,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 1119 transitions, 15694 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:47:58,278 INFO L231 Difference]: Finished difference. Result has 278 places, 737 transitions, 13835 flow [2024-10-11 23:47:58,278 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7232, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=355, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=13835, PETRI_PLACES=278, PETRI_TRANSITIONS=737} [2024-10-11 23:47:58,279 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 232 predicate places. [2024-10-11 23:47:58,279 INFO L471 AbstractCegarLoop]: Abstraction has has 278 places, 737 transitions, 13835 flow [2024-10-11 23:47:58,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 18.076923076923077) internal successors, (470), 26 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:58,279 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:47:58,280 INFO L204 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:47:58,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-11 23:47:58,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-11 23:47:58,485 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-10-11 23:47:58,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:47:58,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1649940601, now seen corresponding path program 5 times [2024-10-11 23:47:58,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:47:58,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198717002] [2024-10-11 23:47:58,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:47:58,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:47:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:47:59,151 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 262 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 23:47:59,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:47:59,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198717002] [2024-10-11 23:47:59,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198717002] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:47:59,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070113033] [2024-10-11 23:47:59,152 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 23:47:59,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:47:59,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:47:59,153 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:47:59,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-11 23:47:59,356 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-10-11 23:47:59,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 23:47:59,359 INFO L255 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 23:47:59,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:47:59,478 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 262 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 23:47:59,478 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:47:59,709 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 262 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 23:47:59,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070113033] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:47:59,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:47:59,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2024-10-11 23:47:59,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476436011] [2024-10-11 23:47:59,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:47:59,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-11 23:47:59,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:47:59,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-11 23:47:59,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=846, Unknown=0, NotChecked=0, Total=1122 [2024-10-11 23:47:59,744 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-11 23:47:59,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 737 transitions, 13835 flow. Second operand has 34 states, 34 states have (on average 18.058823529411764) internal successors, (614), 34 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:47:59,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:47:59,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-11 23:47:59,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand