./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/queue.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 23:42:58,996 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 23:42:59,075 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-14 23:42:59,089 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 23:42:59,089 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 23:42:59,110 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 23:42:59,110 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 23:42:59,111 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 23:42:59,111 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 23:42:59,111 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 23:42:59,112 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 23:42:59,112 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 23:42:59,113 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 23:42:59,113 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 23:42:59,113 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 23:42:59,114 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 23:42:59,114 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 23:42:59,114 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 23:42:59,115 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 23:42:59,115 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 23:42:59,115 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 23:42:59,119 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 23:42:59,119 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 23:42:59,119 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 23:42:59,119 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 23:42:59,119 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-14 23:42:59,120 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 23:42:59,120 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 23:42:59,120 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 23:42:59,120 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 23:42:59,120 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 23:42:59,121 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 23:42:59,121 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 23:42:59,121 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 23:42:59,121 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:42:59,121 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 23:42:59,122 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 23:42:59,122 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 23:42:59,122 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 23:42:59,124 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 23:42:59,124 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 23:42:59,124 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 23:42:59,125 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 23:42:59,125 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 23:42:59,125 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 [2024-10-14 23:42:59,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 23:42:59,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 23:42:59,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 23:42:59,402 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 23:42:59,403 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 23:42:59,404 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue.i [2024-10-14 23:43:00,815 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 23:43:01,092 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 23:43:01,093 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue.i [2024-10-14 23:43:01,116 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f0416b37/79eb254e4620465ca5ac1743602c914d/FLAGed8eb3eed [2024-10-14 23:43:01,132 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f0416b37/79eb254e4620465ca5ac1743602c914d [2024-10-14 23:43:01,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 23:43:01,137 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 23:43:01,138 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 23:43:01,138 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 23:43:01,144 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 23:43:01,144 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:43:01" (1/1) ... [2024-10-14 23:43:01,147 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12d77e2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:01, skipping insertion in model container [2024-10-14 23:43:01,147 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:43:01" (1/1) ... [2024-10-14 23:43:01,190 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 23:43:01,597 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:43:01,609 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 23:43:01,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 23:43:01,751 INFO L204 MainTranslator]: Completed translation [2024-10-14 23:43:01,752 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:01 WrapperNode [2024-10-14 23:43:01,752 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 23:43:01,753 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 23:43:01,753 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 23:43:01,753 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 23:43:01,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:01" (1/1) ... [2024-10-14 23:43:01,781 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:01" (1/1) ... [2024-10-14 23:43:01,822 INFO L138 Inliner]: procedures = 274, calls = 64, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 272 [2024-10-14 23:43:01,823 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 23:43:01,824 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 23:43:01,825 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 23:43:01,825 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 23:43:01,835 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:01" (1/1) ... [2024-10-14 23:43:01,836 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:01" (1/1) ... [2024-10-14 23:43:01,844 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:01" (1/1) ... [2024-10-14 23:43:01,874 INFO L175 MemorySlicer]: Split 51 memory accesses to 5 slices as follows [2, 32, 8, 5, 4]. 63 percent of accesses are in the largest equivalence class. The 15 initializations are split as follows [2, 0, 8, 5, 0]. The 18 writes are split as follows [0, 15, 0, 0, 3]. [2024-10-14 23:43:01,874 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:01" (1/1) ... [2024-10-14 23:43:01,874 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:01" (1/1) ... [2024-10-14 23:43:01,890 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:01" (1/1) ... [2024-10-14 23:43:01,896 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:01" (1/1) ... [2024-10-14 23:43:01,902 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:01" (1/1) ... [2024-10-14 23:43:01,904 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:01" (1/1) ... [2024-10-14 23:43:01,909 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 23:43:01,911 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 23:43:01,912 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 23:43:01,912 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 23:43:01,913 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:01" (1/1) ... [2024-10-14 23:43:01,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 23:43:01,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:43:01,942 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 23:43:01,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 23:43:01,991 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-10-14 23:43:01,991 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-10-14 23:43:01,991 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-10-14 23:43:01,991 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-10-14 23:43:01,991 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-14 23:43:01,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 23:43:01,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 23:43:01,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-14 23:43:01,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-14 23:43:01,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-14 23:43:01,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 23:43:01,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 23:43:01,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-14 23:43:01,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-14 23:43:01,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-14 23:43:01,992 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-14 23:43:01,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 23:43:01,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 23:43:01,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 23:43:01,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 23:43:01,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-14 23:43:01,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-14 23:43:01,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 23:43:01,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 23:43:01,995 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 23:43:02,173 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 23:43:02,174 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 23:43:02,570 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 23:43:02,571 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 23:43:02,835 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 23:43:02,836 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-14 23:43:02,836 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:43:02 BoogieIcfgContainer [2024-10-14 23:43:02,836 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 23:43:02,839 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 23:43:02,840 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 23:43:02,843 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 23:43:02,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:43:01" (1/3) ... [2024-10-14 23:43:02,843 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@238441cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:43:02, skipping insertion in model container [2024-10-14 23:43:02,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:43:01" (2/3) ... [2024-10-14 23:43:02,844 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@238441cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:43:02, skipping insertion in model container [2024-10-14 23:43:02,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:43:02" (3/3) ... [2024-10-14 23:43:02,846 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2024-10-14 23:43:02,863 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 23:43:02,864 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-10-14 23:43:02,864 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 23:43:02,940 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-14 23:43:02,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 86 transitions, 186 flow [2024-10-14 23:43:03,017 INFO L124 PetriNetUnfolderBase]: 10/84 cut-off events. [2024-10-14 23:43:03,018 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 23:43:03,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 84 events. 10/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 222 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2024-10-14 23:43:03,023 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 86 transitions, 186 flow [2024-10-14 23:43:03,027 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 80 transitions, 169 flow [2024-10-14 23:43:03,041 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 23:43:03,049 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;@6b17f3f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 23:43:03,049 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-10-14 23:43:03,056 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 23:43:03,056 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2024-10-14 23:43:03,057 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 23:43:03,057 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:03,058 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:03,059 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-14 23:43:03,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:03,064 INFO L85 PathProgramCache]: Analyzing trace with hash -664948138, now seen corresponding path program 1 times [2024-10-14 23:43:03,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:03,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789296796] [2024-10-14 23:43:03,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:03,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:03,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:03,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:03,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789296796] [2024-10-14 23:43:03,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789296796] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:03,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:43:03,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:43:03,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768087282] [2024-10-14 23:43:03,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:03,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:43:03,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:03,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:43:03,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:43:03,747 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-10-14 23:43:03,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 80 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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) [2024-10-14 23:43:03,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:03,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-10-14 23:43:03,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:04,282 INFO L124 PetriNetUnfolderBase]: 1242/2600 cut-off events. [2024-10-14 23:43:04,283 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-10-14 23:43:04,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4598 conditions, 2600 events. 1242/2600 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 16691 event pairs, 264 based on Foata normal form. 60/2294 useless extension candidates. Maximal degree in co-relation 4524. Up to 1757 conditions per place. [2024-10-14 23:43:04,309 INFO L140 encePairwiseOnDemand]: 79/86 looper letters, 82 selfloop transitions, 6 changer transitions 0/118 dead transitions. [2024-10-14 23:43:04,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 118 transitions, 427 flow [2024-10-14 23:43:04,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 23:43:04,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 23:43:04,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 253 transitions. [2024-10-14 23:43:04,324 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5883720930232558 [2024-10-14 23:43:04,326 INFO L175 Difference]: Start difference. First operand has 78 places, 80 transitions, 169 flow. Second operand 5 states and 253 transitions. [2024-10-14 23:43:04,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 118 transitions, 427 flow [2024-10-14 23:43:04,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 118 transitions, 420 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 23:43:04,338 INFO L231 Difference]: Finished difference. Result has 82 places, 84 transitions, 208 flow [2024-10-14 23:43:04,340 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=208, PETRI_PLACES=82, PETRI_TRANSITIONS=84} [2024-10-14 23:43:04,343 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 4 predicate places. [2024-10-14 23:43:04,344 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 84 transitions, 208 flow [2024-10-14 23:43:04,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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) [2024-10-14 23:43:04,345 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:04,345 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:04,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 23:43:04,345 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-14 23:43:04,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:04,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1080044368, now seen corresponding path program 1 times [2024-10-14 23:43:04,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:04,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929700917] [2024-10-14 23:43:04,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:04,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:04,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:04,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:04,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:04,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929700917] [2024-10-14 23:43:04,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929700917] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:04,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:43:04,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:43:04,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135286190] [2024-10-14 23:43:04,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:04,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 23:43:04,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:04,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 23:43:04,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 23:43:04,643 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-10-14 23:43:04,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 84 transitions, 208 flow. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 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) [2024-10-14 23:43:04,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:04,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-10-14 23:43:04,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:05,107 INFO L124 PetriNetUnfolderBase]: 1326/2714 cut-off events. [2024-10-14 23:43:05,108 INFO L125 PetriNetUnfolderBase]: For 352/360 co-relation queries the response was YES. [2024-10-14 23:43:05,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5161 conditions, 2714 events. 1326/2714 cut-off events. For 352/360 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 17300 event pairs, 266 based on Foata normal form. 44/2400 useless extension candidates. Maximal degree in co-relation 4899. Up to 1807 conditions per place. [2024-10-14 23:43:05,124 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 103 selfloop transitions, 11 changer transitions 0/144 dead transitions. [2024-10-14 23:43:05,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 144 transitions, 576 flow [2024-10-14 23:43:05,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 23:43:05,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 23:43:05,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 341 transitions. [2024-10-14 23:43:05,130 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5664451827242525 [2024-10-14 23:43:05,132 INFO L175 Difference]: Start difference. First operand has 82 places, 84 transitions, 208 flow. Second operand 7 states and 341 transitions. [2024-10-14 23:43:05,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 144 transitions, 576 flow [2024-10-14 23:43:05,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 144 transitions, 576 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 23:43:05,138 INFO L231 Difference]: Finished difference. Result has 91 places, 90 transitions, 277 flow [2024-10-14 23:43:05,139 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=277, PETRI_PLACES=91, PETRI_TRANSITIONS=90} [2024-10-14 23:43:05,141 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 13 predicate places. [2024-10-14 23:43:05,141 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 90 transitions, 277 flow [2024-10-14 23:43:05,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 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) [2024-10-14 23:43:05,142 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:05,142 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:05,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 23:43:05,142 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-14 23:43:05,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:05,144 INFO L85 PathProgramCache]: Analyzing trace with hash 2075149819, now seen corresponding path program 1 times [2024-10-14 23:43:05,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:05,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453889985] [2024-10-14 23:43:05,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:05,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:05,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:05,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:05,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453889985] [2024-10-14 23:43:05,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453889985] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:05,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:43:05,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 23:43:05,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717480626] [2024-10-14 23:43:05,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:05,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:43:05,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:05,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:43:05,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:43:05,261 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 86 [2024-10-14 23:43:05,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 90 transitions, 277 flow. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2024-10-14 23:43:05,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:05,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 86 [2024-10-14 23:43:05,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:05,613 INFO L124 PetriNetUnfolderBase]: 1023/2381 cut-off events. [2024-10-14 23:43:05,613 INFO L125 PetriNetUnfolderBase]: For 437/437 co-relation queries the response was YES. [2024-10-14 23:43:05,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4339 conditions, 2381 events. 1023/2381 cut-off events. For 437/437 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 13996 event pairs, 483 based on Foata normal form. 43/2127 useless extension candidates. Maximal degree in co-relation 4329. Up to 885 conditions per place. [2024-10-14 23:43:05,629 INFO L140 encePairwiseOnDemand]: 82/86 looper letters, 64 selfloop transitions, 3 changer transitions 0/97 dead transitions. [2024-10-14 23:43:05,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 97 transitions, 370 flow [2024-10-14 23:43:05,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:43:05,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:43:05,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2024-10-14 23:43:05,631 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6821705426356589 [2024-10-14 23:43:05,631 INFO L175 Difference]: Start difference. First operand has 91 places, 90 transitions, 277 flow. Second operand 3 states and 176 transitions. [2024-10-14 23:43:05,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 97 transitions, 370 flow [2024-10-14 23:43:05,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 97 transitions, 335 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-10-14 23:43:05,635 INFO L231 Difference]: Finished difference. Result has 76 places, 76 transitions, 169 flow [2024-10-14 23:43:05,635 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=76, PETRI_TRANSITIONS=76} [2024-10-14 23:43:05,636 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -2 predicate places. [2024-10-14 23:43:05,636 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 76 transitions, 169 flow [2024-10-14 23:43:05,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2024-10-14 23:43:05,637 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:05,637 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:05,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 23:43:05,637 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-14 23:43:05,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:05,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1354145374, now seen corresponding path program 1 times [2024-10-14 23:43:05,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:05,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403036067] [2024-10-14 23:43:05,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:05,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:05,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:05,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:05,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403036067] [2024-10-14 23:43:05,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403036067] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:05,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:43:05,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:43:05,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562166203] [2024-10-14 23:43:05,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:05,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:43:05,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:05,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:43:05,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:43:05,713 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 86 [2024-10-14 23:43:05,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 76 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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) [2024-10-14 23:43:05,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:05,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 86 [2024-10-14 23:43:05,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:06,207 INFO L124 PetriNetUnfolderBase]: 1890/4163 cut-off events. [2024-10-14 23:43:06,207 INFO L125 PetriNetUnfolderBase]: For 190/190 co-relation queries the response was YES. [2024-10-14 23:43:06,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7419 conditions, 4163 events. 1890/4163 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 27060 event pairs, 960 based on Foata normal form. 138/3787 useless extension candidates. Maximal degree in co-relation 7413. Up to 1980 conditions per place. [2024-10-14 23:43:06,233 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 113 selfloop transitions, 3 changer transitions 0/144 dead transitions. [2024-10-14 23:43:06,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 144 transitions, 554 flow [2024-10-14 23:43:06,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:43:06,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:43:06,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 252 transitions. [2024-10-14 23:43:06,235 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7325581395348837 [2024-10-14 23:43:06,235 INFO L175 Difference]: Start difference. First operand has 76 places, 76 transitions, 169 flow. Second operand 4 states and 252 transitions. [2024-10-14 23:43:06,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 144 transitions, 554 flow [2024-10-14 23:43:06,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 144 transitions, 548 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:43:06,238 INFO L231 Difference]: Finished difference. Result has 80 places, 78 transitions, 190 flow [2024-10-14 23:43:06,238 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=80, PETRI_TRANSITIONS=78} [2024-10-14 23:43:06,239 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 2 predicate places. [2024-10-14 23:43:06,239 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 78 transitions, 190 flow [2024-10-14 23:43:06,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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) [2024-10-14 23:43:06,240 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:06,240 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:06,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 23:43:06,240 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-14 23:43:06,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:06,241 INFO L85 PathProgramCache]: Analyzing trace with hash -891897917, now seen corresponding path program 1 times [2024-10-14 23:43:06,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:06,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741996148] [2024-10-14 23:43:06,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:06,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:06,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:06,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:06,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741996148] [2024-10-14 23:43:06,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741996148] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:06,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:43:06,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 23:43:06,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421860717] [2024-10-14 23:43:06,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:06,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 23:43:06,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:06,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 23:43:06,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 23:43:06,902 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 86 [2024-10-14 23:43:06,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 78 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 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) [2024-10-14 23:43:06,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:06,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 86 [2024-10-14 23:43:06,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:07,367 INFO L124 PetriNetUnfolderBase]: 1715/3861 cut-off events. [2024-10-14 23:43:07,367 INFO L125 PetriNetUnfolderBase]: For 786/906 co-relation queries the response was YES. [2024-10-14 23:43:07,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7366 conditions, 3861 events. 1715/3861 cut-off events. For 786/906 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 25071 event pairs, 279 based on Foata normal form. 0/3419 useless extension candidates. Maximal degree in co-relation 7358. Up to 2409 conditions per place. [2024-10-14 23:43:07,396 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 75 selfloop transitions, 5 changer transitions 0/110 dead transitions. [2024-10-14 23:43:07,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 110 transitions, 468 flow [2024-10-14 23:43:07,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 23:43:07,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 23:43:07,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 252 transitions. [2024-10-14 23:43:07,399 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.586046511627907 [2024-10-14 23:43:07,400 INFO L175 Difference]: Start difference. First operand has 80 places, 78 transitions, 190 flow. Second operand 5 states and 252 transitions. [2024-10-14 23:43:07,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 110 transitions, 468 flow [2024-10-14 23:43:07,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 110 transitions, 460 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:43:07,405 INFO L231 Difference]: Finished difference. Result has 83 places, 77 transitions, 196 flow [2024-10-14 23:43:07,406 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196, PETRI_PLACES=83, PETRI_TRANSITIONS=77} [2024-10-14 23:43:07,407 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 5 predicate places. [2024-10-14 23:43:07,408 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 77 transitions, 196 flow [2024-10-14 23:43:07,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 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) [2024-10-14 23:43:07,409 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:07,409 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:07,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 23:43:07,409 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-14 23:43:07,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:07,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1915681900, now seen corresponding path program 1 times [2024-10-14 23:43:07,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:07,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651555893] [2024-10-14 23:43:07,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:07,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:07,493 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:07,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:07,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651555893] [2024-10-14 23:43:07,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651555893] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:43:07,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968555991] [2024-10-14 23:43:07,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:07,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:43:07,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:43:07,497 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:43:07,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 23:43:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:07,617 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 23:43:07,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:43:07,685 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:07,685 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:43:07,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968555991] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:07,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 23:43:07,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-14 23:43:07,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927378582] [2024-10-14 23:43:07,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:07,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 23:43:07,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:07,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 23:43:07,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-14 23:43:07,696 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 86 [2024-10-14 23:43:07,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 77 transitions, 196 flow. Second operand has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:43:07,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:07,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 86 [2024-10-14 23:43:07,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:08,171 INFO L124 PetriNetUnfolderBase]: 1912/3876 cut-off events. [2024-10-14 23:43:08,171 INFO L125 PetriNetUnfolderBase]: For 397/397 co-relation queries the response was YES. [2024-10-14 23:43:08,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7855 conditions, 3876 events. 1912/3876 cut-off events. For 397/397 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 23624 event pairs, 118 based on Foata normal form. 70/3580 useless extension candidates. Maximal degree in co-relation 7847. Up to 1906 conditions per place. [2024-10-14 23:43:08,195 INFO L140 encePairwiseOnDemand]: 82/86 looper letters, 100 selfloop transitions, 5 changer transitions 0/132 dead transitions. [2024-10-14 23:43:08,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 132 transitions, 540 flow [2024-10-14 23:43:08,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:43:08,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:43:08,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 233 transitions. [2024-10-14 23:43:08,197 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6773255813953488 [2024-10-14 23:43:08,197 INFO L175 Difference]: Start difference. First operand has 83 places, 77 transitions, 196 flow. Second operand 4 states and 233 transitions. [2024-10-14 23:43:08,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 132 transitions, 540 flow [2024-10-14 23:43:08,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 132 transitions, 514 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-14 23:43:08,202 INFO L231 Difference]: Finished difference. Result has 81 places, 76 transitions, 192 flow [2024-10-14 23:43:08,203 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=78, 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=192, PETRI_PLACES=81, PETRI_TRANSITIONS=76} [2024-10-14 23:43:08,204 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 3 predicate places. [2024-10-14 23:43:08,205 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 76 transitions, 192 flow [2024-10-14 23:43:08,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:43:08,206 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:08,206 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] [2024-10-14 23:43:08,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 23:43:08,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-14 23:43:08,407 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-14 23:43:08,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:08,408 INFO L85 PathProgramCache]: Analyzing trace with hash 368551013, now seen corresponding path program 1 times [2024-10-14 23:43:08,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:08,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106416898] [2024-10-14 23:43:08,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:08,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:08,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:08,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:08,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106416898] [2024-10-14 23:43:08,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106416898] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:08,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:43:08,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 23:43:08,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613229930] [2024-10-14 23:43:08,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:08,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 23:43:08,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:08,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 23:43:08,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-14 23:43:08,893 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 86 [2024-10-14 23:43:08,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 76 transitions, 192 flow. Second operand has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 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) [2024-10-14 23:43:08,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:08,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 86 [2024-10-14 23:43:08,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:09,715 INFO L124 PetriNetUnfolderBase]: 3081/6366 cut-off events. [2024-10-14 23:43:09,715 INFO L125 PetriNetUnfolderBase]: For 2446/2512 co-relation queries the response was YES. [2024-10-14 23:43:09,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13108 conditions, 6366 events. 3081/6366 cut-off events. For 2446/2512 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 42096 event pairs, 861 based on Foata normal form. 0/5623 useless extension candidates. Maximal degree in co-relation 13100. Up to 1665 conditions per place. [2024-10-14 23:43:09,755 INFO L140 encePairwiseOnDemand]: 75/86 looper letters, 127 selfloop transitions, 17 changer transitions 0/169 dead transitions. [2024-10-14 23:43:09,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 169 transitions, 803 flow [2024-10-14 23:43:09,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 23:43:09,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 23:43:09,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 342 transitions. [2024-10-14 23:43:09,758 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5681063122923588 [2024-10-14 23:43:09,758 INFO L175 Difference]: Start difference. First operand has 81 places, 76 transitions, 192 flow. Second operand 7 states and 342 transitions. [2024-10-14 23:43:09,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 169 transitions, 803 flow [2024-10-14 23:43:09,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 169 transitions, 749 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 23:43:09,766 INFO L231 Difference]: Finished difference. Result has 89 places, 86 transitions, 283 flow [2024-10-14 23:43:09,766 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=283, PETRI_PLACES=89, PETRI_TRANSITIONS=86} [2024-10-14 23:43:09,767 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 11 predicate places. [2024-10-14 23:43:09,767 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 86 transitions, 283 flow [2024-10-14 23:43:09,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 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) [2024-10-14 23:43:09,768 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:09,768 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:09,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 23:43:09,768 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-14 23:43:09,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:09,769 INFO L85 PathProgramCache]: Analyzing trace with hash 743404076, now seen corresponding path program 1 times [2024-10-14 23:43:09,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:09,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488122817] [2024-10-14 23:43:09,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:09,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:09,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:09,824 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 23:43:09,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:09,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488122817] [2024-10-14 23:43:09,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488122817] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:09,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:43:09,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:43:09,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928813315] [2024-10-14 23:43:09,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:09,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:43:09,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:09,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:43:09,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:43:09,832 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 86 [2024-10-14 23:43:09,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 86 transitions, 283 flow. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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) [2024-10-14 23:43:09,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:09,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 86 [2024-10-14 23:43:09,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:10,484 INFO L124 PetriNetUnfolderBase]: 2725/5809 cut-off events. [2024-10-14 23:43:10,484 INFO L125 PetriNetUnfolderBase]: For 2481/2481 co-relation queries the response was YES. [2024-10-14 23:43:10,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12610 conditions, 5809 events. 2725/5809 cut-off events. For 2481/2481 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 38538 event pairs, 555 based on Foata normal form. 0/5355 useless extension candidates. Maximal degree in co-relation 12597. Up to 2817 conditions per place. [2024-10-14 23:43:10,517 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 108 selfloop transitions, 6 changer transitions 6/148 dead transitions. [2024-10-14 23:43:10,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 148 transitions, 723 flow [2024-10-14 23:43:10,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:43:10,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:43:10,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 233 transitions. [2024-10-14 23:43:10,519 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6773255813953488 [2024-10-14 23:43:10,519 INFO L175 Difference]: Start difference. First operand has 89 places, 86 transitions, 283 flow. Second operand 4 states and 233 transitions. [2024-10-14 23:43:10,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 148 transitions, 723 flow [2024-10-14 23:43:10,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 148 transitions, 723 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 23:43:10,526 INFO L231 Difference]: Finished difference. Result has 92 places, 84 transitions, 295 flow [2024-10-14 23:43:10,526 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=295, PETRI_PLACES=92, PETRI_TRANSITIONS=84} [2024-10-14 23:43:10,528 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 14 predicate places. [2024-10-14 23:43:10,528 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 84 transitions, 295 flow [2024-10-14 23:43:10,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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) [2024-10-14 23:43:10,529 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:10,529 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:10,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 23:43:10,529 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-14 23:43:10,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:10,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1459819687, now seen corresponding path program 1 times [2024-10-14 23:43:10,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:10,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894324343] [2024-10-14 23:43:10,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:10,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:11,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:11,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:11,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894324343] [2024-10-14 23:43:11,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894324343] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:11,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:43:11,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 23:43:11,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361564451] [2024-10-14 23:43:11,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:11,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 23:43:11,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:11,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 23:43:11,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:43:11,209 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 86 [2024-10-14 23:43:11,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 84 transitions, 295 flow. Second operand has 8 states, 8 states have (on average 30.125) internal successors, (241), 8 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:43:11,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:11,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 86 [2024-10-14 23:43:11,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:12,195 INFO L124 PetriNetUnfolderBase]: 3299/6804 cut-off events. [2024-10-14 23:43:12,196 INFO L125 PetriNetUnfolderBase]: For 5163/5163 co-relation queries the response was YES. [2024-10-14 23:43:12,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15780 conditions, 6804 events. 3299/6804 cut-off events. For 5163/5163 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 46042 event pairs, 873 based on Foata normal form. 22/6234 useless extension candidates. Maximal degree in co-relation 15766. Up to 4114 conditions per place. [2024-10-14 23:43:12,254 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 136 selfloop transitions, 8 changer transitions 2/172 dead transitions. [2024-10-14 23:43:12,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 172 transitions, 984 flow [2024-10-14 23:43:12,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 23:43:12,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 23:43:12,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 373 transitions. [2024-10-14 23:43:12,256 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4819121447028424 [2024-10-14 23:43:12,256 INFO L175 Difference]: Start difference. First operand has 92 places, 84 transitions, 295 flow. Second operand 9 states and 373 transitions. [2024-10-14 23:43:12,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 172 transitions, 984 flow [2024-10-14 23:43:12,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 172 transitions, 928 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 23:43:12,271 INFO L231 Difference]: Finished difference. Result has 99 places, 86 transitions, 325 flow [2024-10-14 23:43:12,271 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=325, PETRI_PLACES=99, PETRI_TRANSITIONS=86} [2024-10-14 23:43:12,272 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 21 predicate places. [2024-10-14 23:43:12,273 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 86 transitions, 325 flow [2024-10-14 23:43:12,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 30.125) internal successors, (241), 8 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:43:12,274 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:12,274 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:12,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 23:43:12,275 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-14 23:43:12,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:12,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1990198984, now seen corresponding path program 1 times [2024-10-14 23:43:12,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:12,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331313495] [2024-10-14 23:43:12,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:12,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:12,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:12,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:12,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331313495] [2024-10-14 23:43:12,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331313495] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:12,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:43:12,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:43:12,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685737859] [2024-10-14 23:43:12,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:12,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:43:12,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:12,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:43:12,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:43:12,347 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-10-14 23:43:12,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 86 transitions, 325 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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) [2024-10-14 23:43:12,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:12,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-10-14 23:43:12,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:13,052 INFO L124 PetriNetUnfolderBase]: 3976/8085 cut-off events. [2024-10-14 23:43:13,052 INFO L125 PetriNetUnfolderBase]: For 5493/5503 co-relation queries the response was YES. [2024-10-14 23:43:13,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18832 conditions, 8085 events. 3976/8085 cut-off events. For 5493/5503 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 57083 event pairs, 2475 based on Foata normal form. 144/7648 useless extension candidates. Maximal degree in co-relation 18815. Up to 5393 conditions per place. [2024-10-14 23:43:13,239 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 102 selfloop transitions, 3 changer transitions 0/131 dead transitions. [2024-10-14 23:43:13,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 131 transitions, 716 flow [2024-10-14 23:43:13,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:43:13,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:43:13,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 220 transitions. [2024-10-14 23:43:13,241 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6395348837209303 [2024-10-14 23:43:13,241 INFO L175 Difference]: Start difference. First operand has 99 places, 86 transitions, 325 flow. Second operand 4 states and 220 transitions. [2024-10-14 23:43:13,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 131 transitions, 716 flow [2024-10-14 23:43:13,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 131 transitions, 708 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-14 23:43:13,254 INFO L231 Difference]: Finished difference. Result has 100 places, 88 transitions, 345 flow [2024-10-14 23:43:13,255 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=345, PETRI_PLACES=100, PETRI_TRANSITIONS=88} [2024-10-14 23:43:13,256 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 22 predicate places. [2024-10-14 23:43:13,256 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 88 transitions, 345 flow [2024-10-14 23:43:13,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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) [2024-10-14 23:43:13,256 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:13,257 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:13,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 23:43:13,257 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-14 23:43:13,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:13,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1567612222, now seen corresponding path program 1 times [2024-10-14 23:43:13,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:13,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661152104] [2024-10-14 23:43:13,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:13,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:13,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:13,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:13,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661152104] [2024-10-14 23:43:13,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661152104] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:13,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:43:13,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 23:43:13,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735598299] [2024-10-14 23:43:13,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:13,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 23:43:13,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:13,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 23:43:13,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:43:13,875 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-10-14 23:43:13,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 88 transitions, 345 flow. Second operand has 8 states, 8 states have (on average 34.375) internal successors, (275), 8 states have internal predecessors, (275), 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) [2024-10-14 23:43:13,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:13,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-10-14 23:43:13,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:14,997 INFO L124 PetriNetUnfolderBase]: 3855/8052 cut-off events. [2024-10-14 23:43:14,997 INFO L125 PetriNetUnfolderBase]: For 5850/5930 co-relation queries the response was YES. [2024-10-14 23:43:15,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19776 conditions, 8052 events. 3855/8052 cut-off events. For 5850/5930 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 57937 event pairs, 845 based on Foata normal form. 44/7594 useless extension candidates. Maximal degree in co-relation 19756. Up to 3972 conditions per place. [2024-10-14 23:43:15,067 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 158 selfloop transitions, 16 changer transitions 2/204 dead transitions. [2024-10-14 23:43:15,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 204 transitions, 1162 flow [2024-10-14 23:43:15,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 23:43:15,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 23:43:15,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 462 transitions. [2024-10-14 23:43:15,070 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5372093023255814 [2024-10-14 23:43:15,070 INFO L175 Difference]: Start difference. First operand has 100 places, 88 transitions, 345 flow. Second operand 10 states and 462 transitions. [2024-10-14 23:43:15,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 204 transitions, 1162 flow [2024-10-14 23:43:15,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 204 transitions, 1159 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:43:15,092 INFO L231 Difference]: Finished difference. Result has 111 places, 97 transitions, 453 flow [2024-10-14 23:43:15,093 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=453, PETRI_PLACES=111, PETRI_TRANSITIONS=97} [2024-10-14 23:43:15,093 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 33 predicate places. [2024-10-14 23:43:15,093 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 97 transitions, 453 flow [2024-10-14 23:43:15,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 34.375) internal successors, (275), 8 states have internal predecessors, (275), 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) [2024-10-14 23:43:15,094 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:15,094 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:15,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 23:43:15,094 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-14 23:43:15,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:15,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1351339435, now seen corresponding path program 1 times [2024-10-14 23:43:15,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:15,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697182346] [2024-10-14 23:43:15,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:15,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:15,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:15,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:15,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697182346] [2024-10-14 23:43:15,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697182346] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:15,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:43:15,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 23:43:15,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857372588] [2024-10-14 23:43:15,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:15,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 23:43:15,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:15,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 23:43:15,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:43:15,623 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-10-14 23:43:15,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 97 transitions, 453 flow. Second operand has 8 states, 8 states have (on average 34.375) internal successors, (275), 8 states have internal predecessors, (275), 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) [2024-10-14 23:43:15,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:15,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-10-14 23:43:15,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:16,542 INFO L124 PetriNetUnfolderBase]: 3855/8052 cut-off events. [2024-10-14 23:43:16,542 INFO L125 PetriNetUnfolderBase]: For 7923/8003 co-relation queries the response was YES. [2024-10-14 23:43:16,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21372 conditions, 8052 events. 3855/8052 cut-off events. For 7923/8003 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 57951 event pairs, 845 based on Foata normal form. 44/7862 useless extension candidates. Maximal degree in co-relation 21350. Up to 4124 conditions per place. [2024-10-14 23:43:16,612 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 158 selfloop transitions, 16 changer transitions 2/204 dead transitions. [2024-10-14 23:43:16,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 204 transitions, 1242 flow [2024-10-14 23:43:16,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 23:43:16,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 23:43:16,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 461 transitions. [2024-10-14 23:43:16,614 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.536046511627907 [2024-10-14 23:43:16,614 INFO L175 Difference]: Start difference. First operand has 111 places, 97 transitions, 453 flow. Second operand 10 states and 461 transitions. [2024-10-14 23:43:16,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 204 transitions, 1242 flow [2024-10-14 23:43:16,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 204 transitions, 1226 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-10-14 23:43:16,644 INFO L231 Difference]: Finished difference. Result has 116 places, 97 transitions, 485 flow [2024-10-14 23:43:16,644 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=485, PETRI_PLACES=116, PETRI_TRANSITIONS=97} [2024-10-14 23:43:16,645 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 38 predicate places. [2024-10-14 23:43:16,645 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 97 transitions, 485 flow [2024-10-14 23:43:16,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 34.375) internal successors, (275), 8 states have internal predecessors, (275), 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) [2024-10-14 23:43:16,645 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:16,646 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:16,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 23:43:16,646 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-14 23:43:16,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:16,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1795582978, now seen corresponding path program 1 times [2024-10-14 23:43:16,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:16,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202979292] [2024-10-14 23:43:16,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:16,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:16,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:16,721 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:16,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:16,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202979292] [2024-10-14 23:43:16,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202979292] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:43:16,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561663600] [2024-10-14 23:43:16,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:16,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:43:16,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:43:16,725 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:43:16,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 23:43:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:16,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 23:43:16,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:43:16,895 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:16,895 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 23:43:16,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561663600] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:16,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 23:43:16,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-14 23:43:16,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271416960] [2024-10-14 23:43:16,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:16,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 23:43:16,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:16,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 23:43:16,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:43:16,916 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-10-14 23:43:16,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 97 transitions, 485 flow. Second operand has 6 states, 6 states have (on average 35.666666666666664) internal successors, (214), 6 states have internal predecessors, (214), 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) [2024-10-14 23:43:16,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:16,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-10-14 23:43:16,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:17,790 INFO L124 PetriNetUnfolderBase]: 3854/7864 cut-off events. [2024-10-14 23:43:17,790 INFO L125 PetriNetUnfolderBase]: For 9263/9307 co-relation queries the response was YES. [2024-10-14 23:43:17,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21605 conditions, 7864 events. 3854/7864 cut-off events. For 9263/9307 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 55089 event pairs, 792 based on Foata normal form. 230/7761 useless extension candidates. Maximal degree in co-relation 21581. Up to 3917 conditions per place. [2024-10-14 23:43:17,853 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 138 selfloop transitions, 5 changer transitions 0/169 dead transitions. [2024-10-14 23:43:17,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 169 transitions, 1113 flow [2024-10-14 23:43:17,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 23:43:17,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 23:43:17,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 303 transitions. [2024-10-14 23:43:17,855 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5872093023255814 [2024-10-14 23:43:17,855 INFO L175 Difference]: Start difference. First operand has 116 places, 97 transitions, 485 flow. Second operand 6 states and 303 transitions. [2024-10-14 23:43:17,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 169 transitions, 1113 flow [2024-10-14 23:43:17,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 169 transitions, 1094 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-14 23:43:17,889 INFO L231 Difference]: Finished difference. Result has 113 places, 95 transitions, 473 flow [2024-10-14 23:43:17,889 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=473, PETRI_PLACES=113, PETRI_TRANSITIONS=95} [2024-10-14 23:43:17,890 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 35 predicate places. [2024-10-14 23:43:17,890 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 95 transitions, 473 flow [2024-10-14 23:43:17,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.666666666666664) internal successors, (214), 6 states have internal predecessors, (214), 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) [2024-10-14 23:43:17,891 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:17,891 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:17,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 23:43:18,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-14 23:43:18,096 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-14 23:43:18,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:18,096 INFO L85 PathProgramCache]: Analyzing trace with hash 171503334, now seen corresponding path program 1 times [2024-10-14 23:43:18,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:18,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183834364] [2024-10-14 23:43:18,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:18,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:18,150 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 23:43:18,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:18,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183834364] [2024-10-14 23:43:18,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183834364] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:18,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:43:18,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:43:18,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61733894] [2024-10-14 23:43:18,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:18,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 23:43:18,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:18,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 23:43:18,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 23:43:18,167 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 86 [2024-10-14 23:43:18,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 95 transitions, 473 flow. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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) [2024-10-14 23:43:18,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:18,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 86 [2024-10-14 23:43:18,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:18,946 INFO L124 PetriNetUnfolderBase]: 3774/7750 cut-off events. [2024-10-14 23:43:18,947 INFO L125 PetriNetUnfolderBase]: For 9180/9180 co-relation queries the response was YES. [2024-10-14 23:43:18,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21483 conditions, 7750 events. 3774/7750 cut-off events. For 9180/9180 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 53976 event pairs, 991 based on Foata normal form. 230/7758 useless extension candidates. Maximal degree in co-relation 21458. Up to 3990 conditions per place. [2024-10-14 23:43:18,995 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 101 selfloop transitions, 6 changer transitions 0/132 dead transitions. [2024-10-14 23:43:18,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 132 transitions, 849 flow [2024-10-14 23:43:18,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 23:43:18,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 23:43:18,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 200 transitions. [2024-10-14 23:43:18,996 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5813953488372093 [2024-10-14 23:43:18,997 INFO L175 Difference]: Start difference. First operand has 113 places, 95 transitions, 473 flow. Second operand 4 states and 200 transitions. [2024-10-14 23:43:18,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 132 transitions, 849 flow [2024-10-14 23:43:19,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 132 transitions, 840 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-14 23:43:19,024 INFO L231 Difference]: Finished difference. Result has 111 places, 94 transitions, 476 flow [2024-10-14 23:43:19,025 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=476, PETRI_PLACES=111, PETRI_TRANSITIONS=94} [2024-10-14 23:43:19,025 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 33 predicate places. [2024-10-14 23:43:19,025 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 94 transitions, 476 flow [2024-10-14 23:43:19,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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) [2024-10-14 23:43:19,026 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:19,026 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:19,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-14 23:43:19,026 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-14 23:43:19,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:19,027 INFO L85 PathProgramCache]: Analyzing trace with hash -186443310, now seen corresponding path program 1 times [2024-10-14 23:43:19,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:19,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895793294] [2024-10-14 23:43:19,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:19,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:19,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:19,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:19,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895793294] [2024-10-14 23:43:19,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895793294] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:19,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:43:19,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:43:19,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37929226] [2024-10-14 23:43:19,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:19,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:43:19,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:19,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:43:19,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:43:19,109 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 86 [2024-10-14 23:43:19,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 94 transitions, 476 flow. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2024-10-14 23:43:19,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:19,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 86 [2024-10-14 23:43:19,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:19,555 INFO L124 PetriNetUnfolderBase]: 1742/3942 cut-off events. [2024-10-14 23:43:19,555 INFO L125 PetriNetUnfolderBase]: For 5652/5652 co-relation queries the response was YES. [2024-10-14 23:43:19,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11312 conditions, 3942 events. 1742/3942 cut-off events. For 5652/5652 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 25570 event pairs, 514 based on Foata normal form. 168/4032 useless extension candidates. Maximal degree in co-relation 11288. Up to 1962 conditions per place. [2024-10-14 23:43:19,586 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 67 selfloop transitions, 6 changer transitions 0/100 dead transitions. [2024-10-14 23:43:19,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 100 transitions, 610 flow [2024-10-14 23:43:19,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:43:19,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:43:19,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 166 transitions. [2024-10-14 23:43:19,588 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6434108527131783 [2024-10-14 23:43:19,588 INFO L175 Difference]: Start difference. First operand has 111 places, 94 transitions, 476 flow. Second operand 3 states and 166 transitions. [2024-10-14 23:43:19,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 100 transitions, 610 flow [2024-10-14 23:43:19,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 100 transitions, 558 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-10-14 23:43:19,602 INFO L231 Difference]: Finished difference. Result has 107 places, 83 transitions, 346 flow [2024-10-14 23:43:19,602 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=346, PETRI_PLACES=107, PETRI_TRANSITIONS=83} [2024-10-14 23:43:19,604 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 29 predicate places. [2024-10-14 23:43:19,604 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 83 transitions, 346 flow [2024-10-14 23:43:19,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2024-10-14 23:43:19,604 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:19,604 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:19,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-14 23:43:19,605 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-14 23:43:19,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:19,605 INFO L85 PathProgramCache]: Analyzing trace with hash -2005235793, now seen corresponding path program 1 times [2024-10-14 23:43:19,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:19,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969956488] [2024-10-14 23:43:19,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:19,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:21,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:21,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:21,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969956488] [2024-10-14 23:43:21,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969956488] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:21,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:43:21,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-14 23:43:21,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412511440] [2024-10-14 23:43:21,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:21,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 23:43:21,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:21,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 23:43:21,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-14 23:43:21,086 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 86 [2024-10-14 23:43:21,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 83 transitions, 346 flow. Second operand has 11 states, 11 states have (on average 31.454545454545453) internal successors, (346), 11 states have internal predecessors, (346), 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) [2024-10-14 23:43:21,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:21,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 86 [2024-10-14 23:43:21,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:21,908 INFO L124 PetriNetUnfolderBase]: 2578/5458 cut-off events. [2024-10-14 23:43:21,909 INFO L125 PetriNetUnfolderBase]: For 5721/5721 co-relation queries the response was YES. [2024-10-14 23:43:21,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15501 conditions, 5458 events. 2578/5458 cut-off events. For 5721/5721 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 34514 event pairs, 330 based on Foata normal form. 12/5361 useless extension candidates. Maximal degree in co-relation 15479. Up to 1146 conditions per place. [2024-10-14 23:43:21,948 INFO L140 encePairwiseOnDemand]: 73/86 looper letters, 171 selfloop transitions, 18 changer transitions 2/213 dead transitions. [2024-10-14 23:43:21,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 213 transitions, 1310 flow [2024-10-14 23:43:21,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-14 23:43:21,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-14 23:43:21,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 501 transitions. [2024-10-14 23:43:21,951 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48546511627906974 [2024-10-14 23:43:21,951 INFO L175 Difference]: Start difference. First operand has 107 places, 83 transitions, 346 flow. Second operand 12 states and 501 transitions. [2024-10-14 23:43:21,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 213 transitions, 1310 flow [2024-10-14 23:43:21,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 213 transitions, 1290 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 23:43:21,965 INFO L231 Difference]: Finished difference. Result has 123 places, 93 transitions, 472 flow [2024-10-14 23:43:21,965 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=472, PETRI_PLACES=123, PETRI_TRANSITIONS=93} [2024-10-14 23:43:21,966 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 45 predicate places. [2024-10-14 23:43:21,966 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 93 transitions, 472 flow [2024-10-14 23:43:21,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 31.454545454545453) internal successors, (346), 11 states have internal predecessors, (346), 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) [2024-10-14 23:43:21,966 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:21,966 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:21,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-14 23:43:21,967 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-14 23:43:21,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:21,967 INFO L85 PathProgramCache]: Analyzing trace with hash 411073559, now seen corresponding path program 1 times [2024-10-14 23:43:21,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:21,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774763536] [2024-10-14 23:43:21,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:21,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:22,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:22,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:22,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774763536] [2024-10-14 23:43:22,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774763536] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:22,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:43:22,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 23:43:22,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427073852] [2024-10-14 23:43:22,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:22,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 23:43:22,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:22,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 23:43:22,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 23:43:22,226 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 86 [2024-10-14 23:43:22,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 93 transitions, 472 flow. Second operand has 6 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:43:22,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:22,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 86 [2024-10-14 23:43:22,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:22,824 INFO L124 PetriNetUnfolderBase]: 2376/5239 cut-off events. [2024-10-14 23:43:22,824 INFO L125 PetriNetUnfolderBase]: For 7549/7549 co-relation queries the response was YES. [2024-10-14 23:43:22,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15433 conditions, 5239 events. 2376/5239 cut-off events. For 7549/7549 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 34189 event pairs, 1317 based on Foata normal form. 35/5172 useless extension candidates. Maximal degree in co-relation 15405. Up to 2695 conditions per place. [2024-10-14 23:43:22,866 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 65 selfloop transitions, 17 changer transitions 0/108 dead transitions. [2024-10-14 23:43:22,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 108 transitions, 706 flow [2024-10-14 23:43:22,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 23:43:22,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 23:43:22,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 226 transitions. [2024-10-14 23:43:22,868 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5255813953488372 [2024-10-14 23:43:22,868 INFO L175 Difference]: Start difference. First operand has 123 places, 93 transitions, 472 flow. Second operand 5 states and 226 transitions. [2024-10-14 23:43:22,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 108 transitions, 706 flow [2024-10-14 23:43:22,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 108 transitions, 696 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-14 23:43:22,887 INFO L231 Difference]: Finished difference. Result has 122 places, 92 transitions, 494 flow [2024-10-14 23:43:22,887 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=494, PETRI_PLACES=122, PETRI_TRANSITIONS=92} [2024-10-14 23:43:22,887 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 44 predicate places. [2024-10-14 23:43:22,887 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 92 transitions, 494 flow [2024-10-14 23:43:22,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 23:43:22,887 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:22,888 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, 1, 1, 1, 1] [2024-10-14 23:43:22,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-14 23:43:22,888 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-14 23:43:22,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:22,888 INFO L85 PathProgramCache]: Analyzing trace with hash -2070301842, now seen corresponding path program 1 times [2024-10-14 23:43:22,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:22,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735879745] [2024-10-14 23:43:22,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:22,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:22,975 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:22,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:22,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735879745] [2024-10-14 23:43:22,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735879745] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:22,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:43:22,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 23:43:22,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70676289] [2024-10-14 23:43:22,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:22,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 23:43:22,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:22,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 23:43:22,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 23:43:22,980 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 86 [2024-10-14 23:43:22,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 92 transitions, 494 flow. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2024-10-14 23:43:22,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:22,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 86 [2024-10-14 23:43:22,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:23,466 INFO L124 PetriNetUnfolderBase]: 2085/4652 cut-off events. [2024-10-14 23:43:23,467 INFO L125 PetriNetUnfolderBase]: For 7514/7514 co-relation queries the response was YES. [2024-10-14 23:43:23,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13496 conditions, 4652 events. 2085/4652 cut-off events. For 7514/7514 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 29988 event pairs, 1286 based on Foata normal form. 30/4578 useless extension candidates. Maximal degree in co-relation 13467. Up to 2430 conditions per place. [2024-10-14 23:43:23,501 INFO L140 encePairwiseOnDemand]: 83/86 looper letters, 77 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2024-10-14 23:43:23,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 106 transitions, 690 flow [2024-10-14 23:43:23,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 23:43:23,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 23:43:23,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 166 transitions. [2024-10-14 23:43:23,503 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6434108527131783 [2024-10-14 23:43:23,503 INFO L175 Difference]: Start difference. First operand has 122 places, 92 transitions, 494 flow. Second operand 3 states and 166 transitions. [2024-10-14 23:43:23,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 106 transitions, 690 flow [2024-10-14 23:43:23,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 106 transitions, 634 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-10-14 23:43:23,521 INFO L231 Difference]: Finished difference. Result has 115 places, 87 transitions, 398 flow [2024-10-14 23:43:23,521 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=398, PETRI_PLACES=115, PETRI_TRANSITIONS=87} [2024-10-14 23:43:23,521 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 37 predicate places. [2024-10-14 23:43:23,521 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 87 transitions, 398 flow [2024-10-14 23:43:23,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2024-10-14 23:43:23,522 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:23,522 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:23,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-14 23:43:23,522 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-14 23:43:23,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:23,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1016604206, now seen corresponding path program 1 times [2024-10-14 23:43:23,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:23,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897783145] [2024-10-14 23:43:23,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:23,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:24,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:24,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:24,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897783145] [2024-10-14 23:43:24,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897783145] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:24,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:43:24,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 23:43:24,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876042450] [2024-10-14 23:43:24,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:24,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 23:43:24,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:24,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 23:43:24,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 23:43:24,112 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-10-14 23:43:24,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 87 transitions, 398 flow. Second operand has 8 states, 8 states have (on average 35.5) internal successors, (284), 8 states have internal predecessors, (284), 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) [2024-10-14 23:43:24,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:24,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-10-14 23:43:24,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:24,741 INFO L124 PetriNetUnfolderBase]: 2103/4544 cut-off events. [2024-10-14 23:43:24,741 INFO L125 PetriNetUnfolderBase]: For 5405/5405 co-relation queries the response was YES. [2024-10-14 23:43:24,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12699 conditions, 4544 events. 2103/4544 cut-off events. For 5405/5405 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 28162 event pairs, 491 based on Foata normal form. 36/4470 useless extension candidates. Maximal degree in co-relation 12672. Up to 2271 conditions per place. [2024-10-14 23:43:24,774 INFO L140 encePairwiseOnDemand]: 74/86 looper letters, 122 selfloop transitions, 13 changer transitions 10/170 dead transitions. [2024-10-14 23:43:24,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 170 transitions, 1052 flow [2024-10-14 23:43:24,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 23:43:24,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 23:43:24,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 436 transitions. [2024-10-14 23:43:24,775 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5069767441860465 [2024-10-14 23:43:24,775 INFO L175 Difference]: Start difference. First operand has 115 places, 87 transitions, 398 flow. Second operand 10 states and 436 transitions. [2024-10-14 23:43:24,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 170 transitions, 1052 flow [2024-10-14 23:43:24,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 170 transitions, 1042 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 23:43:24,791 INFO L231 Difference]: Finished difference. Result has 121 places, 86 transitions, 410 flow [2024-10-14 23:43:24,791 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=410, PETRI_PLACES=121, PETRI_TRANSITIONS=86} [2024-10-14 23:43:24,792 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 43 predicate places. [2024-10-14 23:43:24,792 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 86 transitions, 410 flow [2024-10-14 23:43:24,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 35.5) internal successors, (284), 8 states have internal predecessors, (284), 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) [2024-10-14 23:43:24,792 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:24,792 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:24,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-14 23:43:24,792 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-14 23:43:24,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:24,793 INFO L85 PathProgramCache]: Analyzing trace with hash 832856062, now seen corresponding path program 1 times [2024-10-14 23:43:24,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:24,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514614958] [2024-10-14 23:43:24,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:24,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:25,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:25,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:25,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514614958] [2024-10-14 23:43:25,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514614958] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:25,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:43:25,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-14 23:43:25,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829499762] [2024-10-14 23:43:25,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:25,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 23:43:25,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:25,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 23:43:25,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-14 23:43:25,604 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 86 [2024-10-14 23:43:25,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 86 transitions, 410 flow. Second operand has 11 states, 11 states have (on average 32.72727272727273) internal successors, (360), 11 states have internal predecessors, (360), 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) [2024-10-14 23:43:25,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:25,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 86 [2024-10-14 23:43:25,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:26,466 INFO L124 PetriNetUnfolderBase]: 2391/5067 cut-off events. [2024-10-14 23:43:26,467 INFO L125 PetriNetUnfolderBase]: For 6157/6157 co-relation queries the response was YES. [2024-10-14 23:43:26,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14303 conditions, 5067 events. 2391/5067 cut-off events. For 6157/6157 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 31437 event pairs, 424 based on Foata normal form. 26/5023 useless extension candidates. Maximal degree in co-relation 14276. Up to 1742 conditions per place. [2024-10-14 23:43:26,493 INFO L140 encePairwiseOnDemand]: 70/86 looper letters, 165 selfloop transitions, 17 changer transitions 12/217 dead transitions. [2024-10-14 23:43:26,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 217 transitions, 1373 flow [2024-10-14 23:43:26,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-14 23:43:26,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-14 23:43:26,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 605 transitions. [2024-10-14 23:43:26,495 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4689922480620155 [2024-10-14 23:43:26,495 INFO L175 Difference]: Start difference. First operand has 121 places, 86 transitions, 410 flow. Second operand 15 states and 605 transitions. [2024-10-14 23:43:26,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 217 transitions, 1373 flow [2024-10-14 23:43:26,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 217 transitions, 1354 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-10-14 23:43:26,510 INFO L231 Difference]: Finished difference. Result has 133 places, 94 transitions, 486 flow [2024-10-14 23:43:26,510 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=486, PETRI_PLACES=133, PETRI_TRANSITIONS=94} [2024-10-14 23:43:26,510 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 55 predicate places. [2024-10-14 23:43:26,511 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 94 transitions, 486 flow [2024-10-14 23:43:26,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 32.72727272727273) internal successors, (360), 11 states have internal predecessors, (360), 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) [2024-10-14 23:43:26,511 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:26,511 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:26,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-14 23:43:26,512 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-14 23:43:26,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:26,512 INFO L85 PathProgramCache]: Analyzing trace with hash 48734983, now seen corresponding path program 1 times [2024-10-14 23:43:26,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:26,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865072744] [2024-10-14 23:43:26,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:26,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:27,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:27,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:27,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865072744] [2024-10-14 23:43:27,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865072744] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 23:43:27,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 23:43:27,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-14 23:43:27,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473874375] [2024-10-14 23:43:27,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 23:43:27,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 23:43:27,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:27,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 23:43:27,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-14 23:43:27,361 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 86 [2024-10-14 23:43:27,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 94 transitions, 486 flow. Second operand has 11 states, 11 states have (on average 32.72727272727273) internal successors, (360), 11 states have internal predecessors, (360), 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) [2024-10-14 23:43:27,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:27,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 86 [2024-10-14 23:43:27,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:28,069 INFO L124 PetriNetUnfolderBase]: 2357/5001 cut-off events. [2024-10-14 23:43:28,069 INFO L125 PetriNetUnfolderBase]: For 6741/6741 co-relation queries the response was YES. [2024-10-14 23:43:28,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14603 conditions, 5001 events. 2357/5001 cut-off events. For 6741/6741 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 30906 event pairs, 431 based on Foata normal form. 26/5001 useless extension candidates. Maximal degree in co-relation 14572. Up to 1831 conditions per place. [2024-10-14 23:43:28,098 INFO L140 encePairwiseOnDemand]: 70/86 looper letters, 150 selfloop transitions, 15 changer transitions 16/204 dead transitions. [2024-10-14 23:43:28,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 204 transitions, 1333 flow [2024-10-14 23:43:28,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 23:43:28,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-14 23:43:28,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 533 transitions. [2024-10-14 23:43:28,100 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47674418604651164 [2024-10-14 23:43:28,100 INFO L175 Difference]: Start difference. First operand has 133 places, 94 transitions, 486 flow. Second operand 13 states and 533 transitions. [2024-10-14 23:43:28,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 204 transitions, 1333 flow [2024-10-14 23:43:28,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 204 transitions, 1302 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-10-14 23:43:28,120 INFO L231 Difference]: Finished difference. Result has 137 places, 93 transitions, 481 flow [2024-10-14 23:43:28,121 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=481, PETRI_PLACES=137, PETRI_TRANSITIONS=93} [2024-10-14 23:43:28,121 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 59 predicate places. [2024-10-14 23:43:28,121 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 93 transitions, 481 flow [2024-10-14 23:43:28,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 32.72727272727273) internal successors, (360), 11 states have internal predecessors, (360), 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) [2024-10-14 23:43:28,121 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:28,122 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:28,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-14 23:43:28,122 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-14 23:43:28,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:28,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1948951414, now seen corresponding path program 1 times [2024-10-14 23:43:28,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:28,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578865241] [2024-10-14 23:43:28,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:28,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:28,997 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:28,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:28,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578865241] [2024-10-14 23:43:28,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578865241] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:43:28,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89637638] [2024-10-14 23:43:28,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:28,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:43:28,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:43:29,000 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:43:29,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 23:43:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:29,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-10-14 23:43:29,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:43:29,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2024-10-14 23:43:29,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 36 [2024-10-14 23:43:29,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 33 [2024-10-14 23:43:29,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 33 [2024-10-14 23:43:29,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 43 [2024-10-14 23:43:29,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 48 [2024-10-14 23:43:29,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 137 [2024-10-14 23:43:30,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 280 treesize of output 229 [2024-10-14 23:43:30,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2024-10-14 23:43:30,719 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:30,719 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:43:31,634 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:31,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89637638] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:43:31,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:43:31,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 28 [2024-10-14 23:43:31,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041817019] [2024-10-14 23:43:31,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:43:31,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-14 23:43:31,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:31,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-14 23:43:31,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=667, Unknown=0, NotChecked=0, Total=812 [2024-10-14 23:43:31,770 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-10-14 23:43:31,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 93 transitions, 481 flow. Second operand has 29 states, 29 states have (on average 35.13793103448276) internal successors, (1019), 29 states have internal predecessors, (1019), 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) [2024-10-14 23:43:31,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:31,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-10-14 23:43:31,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:33,870 INFO L124 PetriNetUnfolderBase]: 1748/3806 cut-off events. [2024-10-14 23:43:33,870 INFO L125 PetriNetUnfolderBase]: For 5285/5287 co-relation queries the response was YES. [2024-10-14 23:43:33,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11128 conditions, 3806 events. 1748/3806 cut-off events. For 5285/5287 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 22204 event pairs, 258 based on Foata normal form. 26/3810 useless extension candidates. Maximal degree in co-relation 11097. Up to 926 conditions per place. [2024-10-14 23:43:33,890 INFO L140 encePairwiseOnDemand]: 69/86 looper letters, 161 selfloop transitions, 17 changer transitions 20/223 dead transitions. [2024-10-14 23:43:33,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 223 transitions, 1414 flow [2024-10-14 23:43:33,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-14 23:43:33,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-14 23:43:33,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 675 transitions. [2024-10-14 23:43:33,892 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49055232558139533 [2024-10-14 23:43:33,892 INFO L175 Difference]: Start difference. First operand has 137 places, 93 transitions, 481 flow. Second operand 16 states and 675 transitions. [2024-10-14 23:43:33,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 223 transitions, 1414 flow [2024-10-14 23:43:33,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 223 transitions, 1367 flow, removed 3 selfloop flow, removed 19 redundant places. [2024-10-14 23:43:33,907 INFO L231 Difference]: Finished difference. Result has 133 places, 85 transitions, 399 flow [2024-10-14 23:43:33,907 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=399, PETRI_PLACES=133, PETRI_TRANSITIONS=85} [2024-10-14 23:43:33,907 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 55 predicate places. [2024-10-14 23:43:33,908 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 85 transitions, 399 flow [2024-10-14 23:43:33,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 35.13793103448276) internal successors, (1019), 29 states have internal predecessors, (1019), 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) [2024-10-14 23:43:33,908 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:33,908 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:33,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 23:43:34,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:43:34,113 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-14 23:43:34,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:34,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1664840990, now seen corresponding path program 1 times [2024-10-14 23:43:34,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:34,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928632497] [2024-10-14 23:43:34,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:34,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:35,682 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:35,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:35,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928632497] [2024-10-14 23:43:35,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928632497] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:43:35,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428288693] [2024-10-14 23:43:35,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:35,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:43:35,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:43:35,683 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:43:35,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 23:43:35,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:35,867 INFO L255 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-10-14 23:43:35,873 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:43:35,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-14 23:43:36,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-10-14 23:43:36,152 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-14 23:43:36,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 17 [2024-10-14 23:43:36,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-10-14 23:43:36,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2024-10-14 23:43:36,283 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 23:43:36,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 22 [2024-10-14 23:43:36,299 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:36,300 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 23:43:36,913 INFO L349 Elim1Store]: treesize reduction 96, result has 47.0 percent of original size [2024-10-14 23:43:36,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 435 treesize of output 433 [2024-10-14 23:43:36,941 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 23:43:36,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 295 treesize of output 283 [2024-10-14 23:43:37,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 743 treesize of output 691 [2024-10-14 23:43:38,366 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 23:43:38,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1877 treesize of output 1585 [2024-10-14 23:43:39,192 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:39,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428288693] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 23:43:39,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 23:43:39,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 29 [2024-10-14 23:43:39,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966486201] [2024-10-14 23:43:39,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 23:43:39,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-14 23:43:39,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 23:43:39,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-14 23:43:39,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=732, Unknown=0, NotChecked=0, Total=870 [2024-10-14 23:43:39,350 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 86 [2024-10-14 23:43:39,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 85 transitions, 399 flow. Second operand has 30 states, 30 states have (on average 26.933333333333334) internal successors, (808), 30 states have internal predecessors, (808), 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) [2024-10-14 23:43:39,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 23:43:39,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 86 [2024-10-14 23:43:39,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 23:43:40,851 INFO L124 PetriNetUnfolderBase]: 2024/4207 cut-off events. [2024-10-14 23:43:40,851 INFO L125 PetriNetUnfolderBase]: For 4736/4736 co-relation queries the response was YES. [2024-10-14 23:43:40,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12171 conditions, 4207 events. 2024/4207 cut-off events. For 4736/4736 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 23555 event pairs, 120 based on Foata normal form. 20/4207 useless extension candidates. Maximal degree in co-relation 12142. Up to 662 conditions per place. [2024-10-14 23:43:40,872 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 212 selfloop transitions, 24 changer transitions 20/273 dead transitions. [2024-10-14 23:43:40,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 273 transitions, 1727 flow [2024-10-14 23:43:40,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-14 23:43:40,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-14 23:43:40,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 745 transitions. [2024-10-14 23:43:40,874 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37664307381193124 [2024-10-14 23:43:40,874 INFO L175 Difference]: Start difference. First operand has 133 places, 85 transitions, 399 flow. Second operand 23 states and 745 transitions. [2024-10-14 23:43:40,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 273 transitions, 1727 flow [2024-10-14 23:43:40,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 273 transitions, 1689 flow, removed 0 selfloop flow, removed 17 redundant places. [2024-10-14 23:43:40,886 INFO L231 Difference]: Finished difference. Result has 136 places, 86 transitions, 411 flow [2024-10-14 23:43:40,886 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=411, PETRI_PLACES=136, PETRI_TRANSITIONS=86} [2024-10-14 23:43:40,886 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 58 predicate places. [2024-10-14 23:43:40,887 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 86 transitions, 411 flow [2024-10-14 23:43:40,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 26.933333333333334) internal successors, (808), 30 states have internal predecessors, (808), 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) [2024-10-14 23:43:40,887 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 23:43:40,887 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 23:43:40,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 23:43:41,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:43:41,088 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-14 23:43:41,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 23:43:41,088 INFO L85 PathProgramCache]: Analyzing trace with hash 673979300, now seen corresponding path program 1 times [2024-10-14 23:43:41,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 23:43:41,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86315829] [2024-10-14 23:43:41,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:41,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 23:43:41,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:42,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 23:43:42,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 23:43:42,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86315829] [2024-10-14 23:43:42,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86315829] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 23:43:42,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006884198] [2024-10-14 23:43:42,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 23:43:42,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 23:43:42,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 23:43:42,627 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 23:43:42,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 23:43:42,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 23:43:42,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-10-14 23:43:42,779 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 23:43:42,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2024-10-14 23:43:42,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 36 [2024-10-14 23:43:42,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 33 [2024-10-14 23:43:42,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 44 [2024-10-14 23:43:43,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 56 [2024-10-14 23:43:43,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 59 [2024-10-14 23:43:43,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 112 [2024-10-14 23:43:43,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 301 treesize of output 250 [2024-10-14 23:43:48,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 576 treesize of output 489