./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/queue.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/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-?-c7c6ca5-m [2024-11-09 14:52:40,594 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 14:52:40,669 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 14:52:40,673 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 14:52:40,675 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 14:52:40,702 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 14:52:40,703 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 14:52:40,703 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 14:52:40,704 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 14:52:40,705 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 14:52:40,705 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 14:52:40,705 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 14:52:40,706 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 14:52:40,706 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 14:52:40,707 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 14:52:40,707 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 14:52:40,707 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 14:52:40,708 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 14:52:40,708 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 14:52:40,709 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 14:52:40,710 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 14:52:40,710 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 14:52:40,710 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 14:52:40,711 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 14:52:40,711 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 14:52:40,711 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 14:52:40,712 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 14:52:40,712 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 14:52:40,712 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 14:52:40,712 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 14:52:40,713 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 14:52:40,713 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 14:52:40,713 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 14:52:40,714 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 14:52:40,714 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 14:52:40,715 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 14:52:40,715 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 14:52:40,715 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 14:52:40,715 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 14:52:40,716 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 14:52:40,718 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 14:52:40,719 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 14:52:40,719 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 14:52:40,719 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 14:52:40,721 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 [2024-11-09 14:52:40,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 14:52:40,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 14:52:40,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 14:52:40,974 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 14:52:40,975 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 14:52:40,976 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/queue.i [2024-11-09 14:52:42,456 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 14:52:42,743 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 14:52:42,744 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue.i [2024-11-09 14:52:42,761 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/270a12ab3/e8239443e9ac4011b88e5ca5775ee0ff/FLAG7571af8c8 [2024-11-09 14:52:43,045 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/270a12ab3/e8239443e9ac4011b88e5ca5775ee0ff [2024-11-09 14:52:43,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 14:52:43,048 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 14:52:43,052 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 14:52:43,052 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 14:52:43,057 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 14:52:43,058 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:52:43" (1/1) ... [2024-11-09 14:52:43,059 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@240e7ee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:43, skipping insertion in model container [2024-11-09 14:52:43,059 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:52:43" (1/1) ... [2024-11-09 14:52:43,108 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 14:52:43,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 14:52:43,619 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 14:52:43,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 14:52:43,808 INFO L204 MainTranslator]: Completed translation [2024-11-09 14:52:43,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:43 WrapperNode [2024-11-09 14:52:43,809 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 14:52:43,810 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 14:52:43,810 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 14:52:43,810 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 14:52:43,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:43" (1/1) ... [2024-11-09 14:52:43,846 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:43" (1/1) ... [2024-11-09 14:52:43,890 INFO L138 Inliner]: procedures = 274, calls = 107, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 313 [2024-11-09 14:52:43,891 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 14:52:43,895 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 14:52:43,896 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 14:52:43,896 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 14:52:43,905 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:43" (1/1) ... [2024-11-09 14:52:43,905 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:43" (1/1) ... [2024-11-09 14:52:43,910 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:43" (1/1) ... [2024-11-09 14:52:43,939 INFO L175 MemorySlicer]: Split 92 memory accesses to 5 slices as follows [2, 8, 5, 23, 54]. 59 percent of accesses are in the largest equivalence class. The 58 initializations are split as follows [2, 8, 5, 20, 23]. The 16 writes are split as follows [0, 0, 0, 2, 14]. [2024-11-09 14:52:43,940 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:43" (1/1) ... [2024-11-09 14:52:43,940 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:43" (1/1) ... [2024-11-09 14:52:43,953 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:43" (1/1) ... [2024-11-09 14:52:43,957 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:43" (1/1) ... [2024-11-09 14:52:43,960 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:43" (1/1) ... [2024-11-09 14:52:43,962 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:43" (1/1) ... [2024-11-09 14:52:43,966 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 14:52:43,967 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 14:52:43,967 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 14:52:43,967 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 14:52:43,968 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:43" (1/1) ... [2024-11-09 14:52:43,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 14:52:43,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:52:44,014 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 14:52:44,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 14:52:44,071 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-09 14:52:44,072 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-09 14:52:44,072 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-09 14:52:44,072 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-09 14:52:44,072 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 14:52:44,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 14:52:44,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 14:52:44,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 14:52:44,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 14:52:44,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-09 14:52:44,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 14:52:44,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 14:52:44,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 14:52:44,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 14:52:44,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-09 14:52:44,075 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 14:52:44,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 14:52:44,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 14:52:44,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 14:52:44,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 14:52:44,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 14:52:44,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-09 14:52:44,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 14:52:44,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 14:52:44,080 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 14:52:44,283 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 14:52:44,286 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 14:52:44,767 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 14:52:44,768 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 14:52:45,282 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 14:52:45,282 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 14:52:45,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:52:45 BoogieIcfgContainer [2024-11-09 14:52:45,283 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 14:52:45,285 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 14:52:45,285 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 14:52:45,288 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 14:52:45,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:52:43" (1/3) ... [2024-11-09 14:52:45,289 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@163b2225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:52:45, skipping insertion in model container [2024-11-09 14:52:45,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:43" (2/3) ... [2024-11-09 14:52:45,290 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@163b2225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:52:45, skipping insertion in model container [2024-11-09 14:52:45,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:52:45" (3/3) ... [2024-11-09 14:52:45,291 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2024-11-09 14:52:45,309 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 14:52:45,309 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-11-09 14:52:45,309 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 14:52:45,382 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 14:52:45,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 86 transitions, 186 flow [2024-11-09 14:52:45,467 INFO L124 PetriNetUnfolderBase]: 10/84 cut-off events. [2024-11-09 14:52:45,467 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 14:52:45,472 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 219 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. [2024-11-09 14:52:45,472 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 86 transitions, 186 flow [2024-11-09 14:52:45,476 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 80 transitions, 169 flow [2024-11-09 14:52:45,489 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 14:52:45,497 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;@1c94acc2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 14:52:45,497 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-11-09 14:52:45,505 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 14:52:45,506 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2024-11-09 14:52:45,506 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 14:52:45,506 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:52:45,507 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:52:45,508 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:52:45,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:52:45,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1519906022, now seen corresponding path program 1 times [2024-11-09 14:52:45,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:52:45,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266556831] [2024-11-09 14:52:45,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:52:45,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:52:45,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:52:46,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:52:46,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:52:46,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266556831] [2024-11-09 14:52:46,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266556831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:52:46,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:52:46,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 14:52:46,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492585498] [2024-11-09 14:52:46,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:52:46,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 14:52:46,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:52:46,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 14:52:46,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 14:52:46,310 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-11-09 14:52:46,313 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) [2024-11-09 14:52:46,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:52:46,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-11-09 14:52:46,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:52:46,853 INFO L124 PetriNetUnfolderBase]: 1236/2547 cut-off events. [2024-11-09 14:52:46,853 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-11-09 14:52:46,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4531 conditions, 2547 events. 1236/2547 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 15910 event pairs, 205 based on Foata normal form. 48/2218 useless extension candidates. Maximal degree in co-relation 4460. Up to 1613 conditions per place. [2024-11-09 14:52:46,875 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 74 selfloop transitions, 6 changer transitions 0/110 dead transitions. [2024-11-09 14:52:46,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 110 transitions, 395 flow [2024-11-09 14:52:46,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 14:52:46,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 14:52:46,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 210 transitions. [2024-11-09 14:52:46,891 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6104651162790697 [2024-11-09 14:52:46,893 INFO L175 Difference]: Start difference. First operand has 78 places, 80 transitions, 169 flow. Second operand 4 states and 210 transitions. [2024-11-09 14:52:46,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 110 transitions, 395 flow [2024-11-09 14:52:46,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 110 transitions, 388 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 14:52:46,906 INFO L231 Difference]: Finished difference. Result has 81 places, 83 transitions, 204 flow [2024-11-09 14:52:46,908 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=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=81, PETRI_TRANSITIONS=83} [2024-11-09 14:52:46,914 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 3 predicate places. [2024-11-09 14:52:46,914 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 83 transitions, 204 flow [2024-11-09 14:52:46,915 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) [2024-11-09 14:52:46,915 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:52:46,915 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:52:46,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 14:52:46,916 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:52:46,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:52:46,917 INFO L85 PathProgramCache]: Analyzing trace with hash -127552721, now seen corresponding path program 1 times [2024-11-09 14:52:46,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:52:46,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93001371] [2024-11-09 14:52:46,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:52:46,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:52:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:52:47,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:52:47,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:52:47,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93001371] [2024-11-09 14:52:47,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93001371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:52:47,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:52:47,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 14:52:47,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645904210] [2024-11-09 14:52:47,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:52:47,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 14:52:47,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:52:47,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 14:52:47,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 14:52:47,270 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-11-09 14:52:47,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 83 transitions, 204 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) [2024-11-09 14:52:47,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:52:47,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-11-09 14:52:47,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:52:47,797 INFO L124 PetriNetUnfolderBase]: 1242/2600 cut-off events. [2024-11-09 14:52:47,797 INFO L125 PetriNetUnfolderBase]: For 456/460 co-relation queries the response was YES. [2024-11-09 14:52:47,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4910 conditions, 2600 events. 1242/2600 cut-off events. For 456/460 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 16670 event pairs, 264 based on Foata normal form. 40/2318 useless extension candidates. Maximal degree in co-relation 4140. Up to 1757 conditions per place. [2024-11-09 14:52:47,836 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 82 selfloop transitions, 6 changer transitions 0/118 dead transitions. [2024-11-09 14:52:47,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 118 transitions, 460 flow [2024-11-09 14:52:47,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 14:52:47,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 14:52:47,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 250 transitions. [2024-11-09 14:52:47,841 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5813953488372093 [2024-11-09 14:52:47,843 INFO L175 Difference]: Start difference. First operand has 81 places, 83 transitions, 204 flow. Second operand 5 states and 250 transitions. [2024-11-09 14:52:47,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 118 transitions, 460 flow [2024-11-09 14:52:47,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 118 transitions, 454 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 14:52:47,849 INFO L231 Difference]: Finished difference. Result has 85 places, 84 transitions, 221 flow [2024-11-09 14:52:47,850 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=221, PETRI_PLACES=85, PETRI_TRANSITIONS=84} [2024-11-09 14:52:47,850 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 7 predicate places. [2024-11-09 14:52:47,850 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 84 transitions, 221 flow [2024-11-09 14:52:47,851 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) [2024-11-09 14:52:47,851 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:52:47,851 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:52:47,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 14:52:47,851 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:52:47,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:52:47,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1975914034, now seen corresponding path program 1 times [2024-11-09 14:52:47,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:52:47,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862441920] [2024-11-09 14:52:47,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:52:47,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:52:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:52:48,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:52:48,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:52:48,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862441920] [2024-11-09 14:52:48,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862441920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:52:48,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:52:48,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 14:52:48,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7378792] [2024-11-09 14:52:48,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:52:48,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 14:52:48,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:52:48,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 14:52:48,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 14:52:48,179 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-11-09 14:52:48,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 84 transitions, 221 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) [2024-11-09 14:52:48,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:52:48,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-11-09 14:52:48,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:52:48,691 INFO L124 PetriNetUnfolderBase]: 1322/2710 cut-off events. [2024-11-09 14:52:48,691 INFO L125 PetriNetUnfolderBase]: For 536/554 co-relation queries the response was YES. [2024-11-09 14:52:48,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5219 conditions, 2710 events. 1322/2710 cut-off events. For 536/554 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 17287 event pairs, 266 based on Foata normal form. 44/2400 useless extension candidates. Maximal degree in co-relation 4439. Up to 1803 conditions per place. [2024-11-09 14:52:48,710 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 103 selfloop transitions, 11 changer transitions 0/144 dead transitions. [2024-11-09 14:52:48,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 144 transitions, 589 flow [2024-11-09 14:52:48,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 14:52:48,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 14:52:48,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 341 transitions. [2024-11-09 14:52:48,714 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5664451827242525 [2024-11-09 14:52:48,714 INFO L175 Difference]: Start difference. First operand has 85 places, 84 transitions, 221 flow. Second operand 7 states and 341 transitions. [2024-11-09 14:52:48,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 144 transitions, 589 flow [2024-11-09 14:52:48,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 144 transitions, 575 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-09 14:52:48,721 INFO L231 Difference]: Finished difference. Result has 91 places, 90 transitions, 276 flow [2024-11-09 14:52:48,721 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=207, 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=276, PETRI_PLACES=91, PETRI_TRANSITIONS=90} [2024-11-09 14:52:48,722 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 13 predicate places. [2024-11-09 14:52:48,723 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 90 transitions, 276 flow [2024-11-09 14:52:48,723 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) [2024-11-09 14:52:48,723 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:52:48,724 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:52:48,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 14:52:48,724 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:52:48,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:52:48,725 INFO L85 PathProgramCache]: Analyzing trace with hash -199380083, now seen corresponding path program 1 times [2024-11-09 14:52:48,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:52:48,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318287787] [2024-11-09 14:52:48,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:52:48,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:52:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:52:48,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:52:48,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:52:48,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318287787] [2024-11-09 14:52:48,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318287787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:52:48,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:52:48,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 14:52:48,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284032465] [2024-11-09 14:52:48,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:52:48,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 14:52:48,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:52:48,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 14:52:48,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 14:52:48,841 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 86 [2024-11-09 14:52:48,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 90 transitions, 276 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) [2024-11-09 14:52:48,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:52:48,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 86 [2024-11-09 14:52:48,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:52:49,151 INFO L124 PetriNetUnfolderBase]: 1023/2392 cut-off events. [2024-11-09 14:52:49,152 INFO L125 PetriNetUnfolderBase]: For 554/554 co-relation queries the response was YES. [2024-11-09 14:52:49,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4364 conditions, 2392 events. 1023/2392 cut-off events. For 554/554 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 14077 event pairs, 483 based on Foata normal form. 41/2132 useless extension candidates. Maximal degree in co-relation 4354. Up to 885 conditions per place. [2024-11-09 14:52:49,168 INFO L140 encePairwiseOnDemand]: 82/86 looper letters, 64 selfloop transitions, 3 changer transitions 0/97 dead transitions. [2024-11-09 14:52:49,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 97 transitions, 374 flow [2024-11-09 14:52:49,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 14:52:49,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 14:52:49,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2024-11-09 14:52:49,170 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6821705426356589 [2024-11-09 14:52:49,170 INFO L175 Difference]: Start difference. First operand has 91 places, 90 transitions, 276 flow. Second operand 3 states and 176 transitions. [2024-11-09 14:52:49,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 97 transitions, 374 flow [2024-11-09 14:52:49,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 97 transitions, 335 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-11-09 14:52:49,175 INFO L231 Difference]: Finished difference. Result has 75 places, 76 transitions, 169 flow [2024-11-09 14:52:49,175 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=72, 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=75, PETRI_TRANSITIONS=76} [2024-11-09 14:52:49,176 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -3 predicate places. [2024-11-09 14:52:49,176 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 76 transitions, 169 flow [2024-11-09 14:52:49,177 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) [2024-11-09 14:52:49,177 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:52:49,177 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:52:49,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 14:52:49,177 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:52:49,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:52:49,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1669265840, now seen corresponding path program 1 times [2024-11-09 14:52:49,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:52:49,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766446225] [2024-11-09 14:52:49,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:52:49,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:52:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:52:49,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:52:49,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:52:49,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766446225] [2024-11-09 14:52:49,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766446225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:52:49,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:52:49,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 14:52:49,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829166592] [2024-11-09 14:52:49,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:52:49,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 14:52:49,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:52:49,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 14:52:49,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 14:52:49,245 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 86 [2024-11-09 14:52:49,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 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) [2024-11-09 14:52:49,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:52:49,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 86 [2024-11-09 14:52:49,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:52:49,851 INFO L124 PetriNetUnfolderBase]: 1890/4150 cut-off events. [2024-11-09 14:52:49,851 INFO L125 PetriNetUnfolderBase]: For 190/190 co-relation queries the response was YES. [2024-11-09 14:52:49,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7405 conditions, 4150 events. 1890/4150 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 26847 event pairs, 960 based on Foata normal form. 138/3776 useless extension candidates. Maximal degree in co-relation 7400. Up to 1980 conditions per place. [2024-11-09 14:52:49,881 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 113 selfloop transitions, 3 changer transitions 0/144 dead transitions. [2024-11-09 14:52:49,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 144 transitions, 554 flow [2024-11-09 14:52:49,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 14:52:49,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 14:52:49,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 252 transitions. [2024-11-09 14:52:49,883 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7325581395348837 [2024-11-09 14:52:49,883 INFO L175 Difference]: Start difference. First operand has 75 places, 76 transitions, 169 flow. Second operand 4 states and 252 transitions. [2024-11-09 14:52:49,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 144 transitions, 554 flow [2024-11-09 14:52:49,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 144 transitions, 548 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 14:52:49,887 INFO L231 Difference]: Finished difference. Result has 79 places, 78 transitions, 190 flow [2024-11-09 14:52:49,887 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=74, 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=79, PETRI_TRANSITIONS=78} [2024-11-09 14:52:49,888 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 1 predicate places. [2024-11-09 14:52:49,888 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 78 transitions, 190 flow [2024-11-09 14:52:49,888 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) [2024-11-09 14:52:49,889 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:52:49,889 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:52:49,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 14:52:49,889 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:52:49,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:52:49,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1296984019, now seen corresponding path program 1 times [2024-11-09 14:52:49,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:52:49,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087821591] [2024-11-09 14:52:49,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:52:49,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:52:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:52:50,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:52:50,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:52:50,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087821591] [2024-11-09 14:52:50,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087821591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:52:50,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:52:50,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 14:52:50,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908745265] [2024-11-09 14:52:50,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:52:50,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 14:52:50,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:52:50,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 14:52:50,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 14:52:50,236 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 86 [2024-11-09 14:52:50,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 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) [2024-11-09 14:52:50,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:52:50,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 86 [2024-11-09 14:52:50,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:52:50,723 INFO L124 PetriNetUnfolderBase]: 1715/3861 cut-off events. [2024-11-09 14:52:50,723 INFO L125 PetriNetUnfolderBase]: For 784/904 co-relation queries the response was YES. [2024-11-09 14:52:50,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7365 conditions, 3861 events. 1715/3861 cut-off events. For 784/904 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 25084 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. [2024-11-09 14:52:50,744 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 75 selfloop transitions, 5 changer transitions 0/110 dead transitions. [2024-11-09 14:52:50,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 110 transitions, 468 flow [2024-11-09 14:52:50,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 14:52:50,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 14:52:50,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 252 transitions. [2024-11-09 14:52:50,746 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.586046511627907 [2024-11-09 14:52:50,747 INFO L175 Difference]: Start difference. First operand has 79 places, 78 transitions, 190 flow. Second operand 5 states and 252 transitions. [2024-11-09 14:52:50,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 110 transitions, 468 flow [2024-11-09 14:52:50,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 110 transitions, 460 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 14:52:50,751 INFO L231 Difference]: Finished difference. Result has 82 places, 77 transitions, 196 flow [2024-11-09 14:52:50,751 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=78, 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=82, PETRI_TRANSITIONS=77} [2024-11-09 14:52:50,752 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 4 predicate places. [2024-11-09 14:52:50,753 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 77 transitions, 196 flow [2024-11-09 14:52:50,754 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) [2024-11-09 14:52:50,754 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:52:50,754 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:52:50,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 14:52:50,754 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:52:50,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:52:50,755 INFO L85 PathProgramCache]: Analyzing trace with hash -649880907, now seen corresponding path program 1 times [2024-11-09 14:52:50,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:52:50,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588789804] [2024-11-09 14:52:50,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:52:50,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:52:50,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:52:51,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:52:51,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:52:51,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588789804] [2024-11-09 14:52:51,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588789804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:52:51,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:52:51,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 14:52:51,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986595924] [2024-11-09 14:52:51,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:52:51,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 14:52:51,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:52:51,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 14:52:51,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 14:52:51,842 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 86 [2024-11-09 14:52:51,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 77 transitions, 196 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) [2024-11-09 14:52:51,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:52:51,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 86 [2024-11-09 14:52:51,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:52:52,766 INFO L124 PetriNetUnfolderBase]: 2309/4808 cut-off events. [2024-11-09 14:52:52,767 INFO L125 PetriNetUnfolderBase]: For 919/1071 co-relation queries the response was YES. [2024-11-09 14:52:52,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9585 conditions, 4808 events. 2309/4808 cut-off events. For 919/1071 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 31255 event pairs, 444 based on Foata normal form. 22/4298 useless extension candidates. Maximal degree in co-relation 9578. Up to 2448 conditions per place. [2024-11-09 14:52:52,799 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 135 selfloop transitions, 8 changer transitions 0/169 dead transitions. [2024-11-09 14:52:52,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 169 transitions, 783 flow [2024-11-09 14:52:52,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 14:52:52,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 14:52:52,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 379 transitions. [2024-11-09 14:52:52,801 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4896640826873385 [2024-11-09 14:52:52,801 INFO L175 Difference]: Start difference. First operand has 82 places, 77 transitions, 196 flow. Second operand 9 states and 379 transitions. [2024-11-09 14:52:52,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 169 transitions, 783 flow [2024-11-09 14:52:52,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 169 transitions, 773 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 14:52:52,809 INFO L231 Difference]: Finished difference. Result has 89 places, 80 transitions, 223 flow [2024-11-09 14:52:52,811 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=223, PETRI_PLACES=89, PETRI_TRANSITIONS=80} [2024-11-09 14:52:52,811 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 11 predicate places. [2024-11-09 14:52:52,812 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 80 transitions, 223 flow [2024-11-09 14:52:52,812 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) [2024-11-09 14:52:52,812 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:52:52,812 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:52:52,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 14:52:52,813 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:52:52,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:52:52,813 INFO L85 PathProgramCache]: Analyzing trace with hash -227494426, now seen corresponding path program 1 times [2024-11-09 14:52:52,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:52:52,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729889774] [2024-11-09 14:52:52,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:52:52,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:52:52,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:52:52,898 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:52:52,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:52:52,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729889774] [2024-11-09 14:52:52,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729889774] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 14:52:52,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79324693] [2024-11-09 14:52:52,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:52:52,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:52:52,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:52:52,902 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 14:52:52,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 14:52:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:52:53,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 14:52:53,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 14:52:53,118 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:52:53,119 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 14:52:53,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79324693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:52:53,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 14:52:53,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-09 14:52:53,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442933189] [2024-11-09 14:52:53,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:52:53,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 14:52:53,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:52:53,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 14:52:53,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-09 14:52:53,135 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 86 [2024-11-09 14:52:53,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 80 transitions, 223 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) [2024-11-09 14:52:53,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:52:53,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 86 [2024-11-09 14:52:53,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:52:53,702 INFO L124 PetriNetUnfolderBase]: 2140/4297 cut-off events. [2024-11-09 14:52:53,705 INFO L125 PetriNetUnfolderBase]: For 819/903 co-relation queries the response was YES. [2024-11-09 14:52:53,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9002 conditions, 4297 events. 2140/4297 cut-off events. For 819/903 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 26972 event pairs, 111 based on Foata normal form. 83/4006 useless extension candidates. Maximal degree in co-relation 8993. Up to 2115 conditions per place. [2024-11-09 14:52:53,726 INFO L140 encePairwiseOnDemand]: 82/86 looper letters, 106 selfloop transitions, 5 changer transitions 0/139 dead transitions. [2024-11-09 14:52:53,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 139 transitions, 613 flow [2024-11-09 14:52:53,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 14:52:53,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 14:52:53,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 233 transitions. [2024-11-09 14:52:53,728 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6773255813953488 [2024-11-09 14:52:53,728 INFO L175 Difference]: Start difference. First operand has 89 places, 80 transitions, 223 flow. Second operand 4 states and 233 transitions. [2024-11-09 14:52:53,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 139 transitions, 613 flow [2024-11-09 14:52:53,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 139 transitions, 591 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 14:52:53,735 INFO L231 Difference]: Finished difference. Result has 87 places, 79 transitions, 221 flow [2024-11-09 14:52:53,735 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=221, PETRI_PLACES=87, PETRI_TRANSITIONS=79} [2024-11-09 14:52:53,736 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2024-11-09 14:52:53,738 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 79 transitions, 221 flow [2024-11-09 14:52:53,738 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) [2024-11-09 14:52:53,738 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:52:53,738 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] [2024-11-09 14:52:53,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 14:52:53,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:52:53,940 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:52:53,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:52:53,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1328529243, now seen corresponding path program 1 times [2024-11-09 14:52:53,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:52:53,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019233312] [2024-11-09 14:52:53,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:52:53,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:52:53,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:52:54,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:52:54,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:52:54,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019233312] [2024-11-09 14:52:54,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019233312] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:52:54,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:52:54,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 14:52:54,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338829722] [2024-11-09 14:52:54,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:52:54,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 14:52:54,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:52:54,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 14:52:54,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-09 14:52:55,003 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 86 [2024-11-09 14:52:55,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 79 transitions, 221 flow. Second operand has 10 states, 10 states have (on average 29.7) internal successors, (297), 10 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:52:55,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:52:55,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 86 [2024-11-09 14:52:55,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:52:55,818 INFO L124 PetriNetUnfolderBase]: 2277/4743 cut-off events. [2024-11-09 14:52:55,819 INFO L125 PetriNetUnfolderBase]: For 2375/2447 co-relation queries the response was YES. [2024-11-09 14:52:55,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10228 conditions, 4743 events. 2277/4743 cut-off events. For 2375/2447 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 30858 event pairs, 444 based on Foata normal form. 22/4311 useless extension candidates. Maximal degree in co-relation 10218. Up to 2448 conditions per place. [2024-11-09 14:52:55,851 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 134 selfloop transitions, 8 changer transitions 0/167 dead transitions. [2024-11-09 14:52:55,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 167 transitions, 866 flow [2024-11-09 14:52:55,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 14:52:55,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 14:52:55,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 378 transitions. [2024-11-09 14:52:55,854 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2024-11-09 14:52:55,854 INFO L175 Difference]: Start difference. First operand has 87 places, 79 transitions, 221 flow. Second operand 9 states and 378 transitions. [2024-11-09 14:52:55,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 167 transitions, 866 flow [2024-11-09 14:52:55,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 167 transitions, 783 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 14:52:55,860 INFO L231 Difference]: Finished difference. Result has 91 places, 78 transitions, 220 flow [2024-11-09 14:52:55,861 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=220, PETRI_PLACES=91, PETRI_TRANSITIONS=78} [2024-11-09 14:52:55,862 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 13 predicate places. [2024-11-09 14:52:55,863 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 78 transitions, 220 flow [2024-11-09 14:52:55,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 29.7) internal successors, (297), 10 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:52:55,864 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:52:55,864 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:52:55,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 14:52:55,865 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:52:55,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:52:55,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1537608300, now seen corresponding path program 1 times [2024-11-09 14:52:55,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:52:55,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489514906] [2024-11-09 14:52:55,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:52:55,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:52:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:52:55,928 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 14:52:55,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:52:55,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489514906] [2024-11-09 14:52:55,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489514906] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:52:55,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:52:55,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 14:52:55,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819016673] [2024-11-09 14:52:55,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:52:55,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 14:52:55,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:52:55,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 14:52:55,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 14:52:55,939 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 86 [2024-11-09 14:52:55,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 78 transitions, 220 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) [2024-11-09 14:52:55,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:52:55,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 86 [2024-11-09 14:52:55,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:52:56,486 INFO L124 PetriNetUnfolderBase]: 1995/4219 cut-off events. [2024-11-09 14:52:56,487 INFO L125 PetriNetUnfolderBase]: For 1058/1102 co-relation queries the response was YES. [2024-11-09 14:52:56,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8656 conditions, 4219 events. 1995/4219 cut-off events. For 1058/1102 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 27245 event pairs, 349 based on Foata normal form. 0/3904 useless extension candidates. Maximal degree in co-relation 8646. Up to 1995 conditions per place. [2024-11-09 14:52:56,516 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 99 selfloop transitions, 6 changer transitions 6/138 dead transitions. [2024-11-09 14:52:56,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 138 transitions, 620 flow [2024-11-09 14:52:56,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 14:52:56,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 14:52:56,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 233 transitions. [2024-11-09 14:52:56,519 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6773255813953488 [2024-11-09 14:52:56,519 INFO L175 Difference]: Start difference. First operand has 91 places, 78 transitions, 220 flow. Second operand 4 states and 233 transitions. [2024-11-09 14:52:56,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 138 transitions, 620 flow [2024-11-09 14:52:56,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 138 transitions, 586 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-09 14:52:56,526 INFO L231 Difference]: Finished difference. Result has 88 places, 76 transitions, 220 flow [2024-11-09 14:52:56,527 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=88, PETRI_TRANSITIONS=76} [2024-11-09 14:52:56,528 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 10 predicate places. [2024-11-09 14:52:56,528 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 76 transitions, 220 flow [2024-11-09 14:52:56,529 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) [2024-11-09 14:52:56,529 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:52:56,529 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, 1] [2024-11-09 14:52:56,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 14:52:56,529 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:52:56,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:52:56,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1765297320, now seen corresponding path program 1 times [2024-11-09 14:52:56,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:52:56,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298614799] [2024-11-09 14:52:56,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:52:56,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:52:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:52:56,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:52:56,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:52:56,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298614799] [2024-11-09 14:52:56,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298614799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:52:56,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:52:56,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 14:52:56,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134946469] [2024-11-09 14:52:56,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:52:56,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 14:52:56,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:52:56,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 14:52:56,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 14:52:56,604 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-11-09 14:52:56,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 76 transitions, 220 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) [2024-11-09 14:52:56,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:52:56,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-11-09 14:52:56,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:52:57,219 INFO L124 PetriNetUnfolderBase]: 2829/5823 cut-off events. [2024-11-09 14:52:57,219 INFO L125 PetriNetUnfolderBase]: For 3581/3591 co-relation queries the response was YES. [2024-11-09 14:52:57,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12846 conditions, 5823 events. 2829/5823 cut-off events. For 3581/3591 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 39862 event pairs, 1541 based on Foata normal form. 144/5581 useless extension candidates. Maximal degree in co-relation 12835. Up to 3624 conditions per place. [2024-11-09 14:52:57,273 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 93 selfloop transitions, 3 changer transitions 0/121 dead transitions. [2024-11-09 14:52:57,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 121 transitions, 578 flow [2024-11-09 14:52:57,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 14:52:57,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 14:52:57,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 220 transitions. [2024-11-09 14:52:57,275 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6395348837209303 [2024-11-09 14:52:57,275 INFO L175 Difference]: Start difference. First operand has 88 places, 76 transitions, 220 flow. Second operand 4 states and 220 transitions. [2024-11-09 14:52:57,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 121 transitions, 578 flow [2024-11-09 14:52:57,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 121 transitions, 556 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 14:52:57,286 INFO L231 Difference]: Finished difference. Result has 90 places, 78 transitions, 240 flow [2024-11-09 14:52:57,288 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=85, 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=240, PETRI_PLACES=90, PETRI_TRANSITIONS=78} [2024-11-09 14:52:57,288 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 12 predicate places. [2024-11-09 14:52:57,288 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 78 transitions, 240 flow [2024-11-09 14:52:57,288 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) [2024-11-09 14:52:57,288 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:52:57,289 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] [2024-11-09 14:52:57,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 14:52:57,289 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:52:57,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:52:57,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1111343872, now seen corresponding path program 1 times [2024-11-09 14:52:57,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:52:57,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535628815] [2024-11-09 14:52:57,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:52:57,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:52:57,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:52:57,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:52:57,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:52:57,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535628815] [2024-11-09 14:52:57,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535628815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:52:57,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:52:57,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 14:52:57,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324879279] [2024-11-09 14:52:57,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:52:57,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 14:52:57,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:52:57,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 14:52:57,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-09 14:52:57,813 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 86 [2024-11-09 14:52:57,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 78 transitions, 240 flow. Second operand has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:52:57,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:52:57,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 86 [2024-11-09 14:52:57,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:52:58,698 INFO L124 PetriNetUnfolderBase]: 2968/6043 cut-off events. [2024-11-09 14:52:58,699 INFO L125 PetriNetUnfolderBase]: For 2654/2720 co-relation queries the response was YES. [2024-11-09 14:52:58,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13780 conditions, 6043 events. 2968/6043 cut-off events. For 2654/2720 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 41279 event pairs, 480 based on Foata normal form. 0/5609 useless extension candidates. Maximal degree in co-relation 13766. Up to 2392 conditions per place. [2024-11-09 14:52:58,749 INFO L140 encePairwiseOnDemand]: 72/86 looper letters, 151 selfloop transitions, 14 changer transitions 2/192 dead transitions. [2024-11-09 14:52:58,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 192 transitions, 1000 flow [2024-11-09 14:52:58,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 14:52:58,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 14:52:58,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 445 transitions. [2024-11-09 14:52:58,753 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5174418604651163 [2024-11-09 14:52:58,753 INFO L175 Difference]: Start difference. First operand has 90 places, 78 transitions, 240 flow. Second operand 10 states and 445 transitions. [2024-11-09 14:52:58,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 192 transitions, 1000 flow [2024-11-09 14:52:58,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 192 transitions, 997 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 14:52:58,763 INFO L231 Difference]: Finished difference. Result has 101 places, 85 transitions, 310 flow [2024-11-09 14:52:58,764 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=310, PETRI_PLACES=101, PETRI_TRANSITIONS=85} [2024-11-09 14:52:58,765 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 23 predicate places. [2024-11-09 14:52:58,766 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 85 transitions, 310 flow [2024-11-09 14:52:58,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:52:58,767 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:52:58,767 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] [2024-11-09 14:52:58,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 14:52:58,769 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:52:58,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:52:58,769 INFO L85 PathProgramCache]: Analyzing trace with hash 91922555, now seen corresponding path program 1 times [2024-11-09 14:52:58,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:52:58,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041397868] [2024-11-09 14:52:58,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:52:58,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:52:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:52:59,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:52:59,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:52:59,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041397868] [2024-11-09 14:52:59,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041397868] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:52:59,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:52:59,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 14:52:59,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573464311] [2024-11-09 14:52:59,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:52:59,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 14:52:59,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:52:59,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 14:52:59,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 14:52:59,218 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-11-09 14:52:59,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 85 transitions, 310 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) [2024-11-09 14:52:59,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:52:59,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-11-09 14:52:59,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:00,168 INFO L124 PetriNetUnfolderBase]: 2853/5974 cut-off events. [2024-11-09 14:53:00,169 INFO L125 PetriNetUnfolderBase]: For 3458/3524 co-relation queries the response was YES. [2024-11-09 14:53:00,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14722 conditions, 5974 events. 2853/5974 cut-off events. For 3458/3524 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 41519 event pairs, 530 based on Foata normal form. 44/5852 useless extension candidates. Maximal degree in co-relation 14706. Up to 2881 conditions per place. [2024-11-09 14:53:00,220 INFO L140 encePairwiseOnDemand]: 72/86 looper letters, 134 selfloop transitions, 13 changer transitions 2/177 dead transitions. [2024-11-09 14:53:00,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 177 transitions, 975 flow [2024-11-09 14:53:00,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 14:53:00,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 14:53:00,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 414 transitions. [2024-11-09 14:53:00,222 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5348837209302325 [2024-11-09 14:53:00,222 INFO L175 Difference]: Start difference. First operand has 101 places, 85 transitions, 310 flow. Second operand 9 states and 414 transitions. [2024-11-09 14:53:00,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 177 transitions, 975 flow [2024-11-09 14:53:00,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 177 transitions, 965 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 14:53:00,236 INFO L231 Difference]: Finished difference. Result has 106 places, 88 transitions, 360 flow [2024-11-09 14:53:00,236 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=360, PETRI_PLACES=106, PETRI_TRANSITIONS=88} [2024-11-09 14:53:00,238 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 28 predicate places. [2024-11-09 14:53:00,238 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 88 transitions, 360 flow [2024-11-09 14:53:00,238 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) [2024-11-09 14:53:00,238 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:00,238 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] [2024-11-09 14:53:00,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 14:53:00,239 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:53:00,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:00,239 INFO L85 PathProgramCache]: Analyzing trace with hash -945129074, now seen corresponding path program 1 times [2024-11-09 14:53:00,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:00,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879251332] [2024-11-09 14:53:00,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:00,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:00,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:00,342 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:00,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:00,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879251332] [2024-11-09 14:53:00,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879251332] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 14:53:00,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671892929] [2024-11-09 14:53:00,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:00,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:53:00,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:53:00,347 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 14:53:00,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 14:53:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:00,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 14:53:00,484 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 14:53:00,525 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:00,525 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 14:53:00,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671892929] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:00,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 14:53:00,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-09 14:53:00,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683377104] [2024-11-09 14:53:00,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:00,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 14:53:00,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:00,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 14:53:00,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-09 14:53:00,543 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 86 [2024-11-09 14:53:00,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 88 transitions, 360 flow. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:00,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:00,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 86 [2024-11-09 14:53:00,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:01,301 INFO L124 PetriNetUnfolderBase]: 3142/6194 cut-off events. [2024-11-09 14:53:01,301 INFO L125 PetriNetUnfolderBase]: For 4559/4593 co-relation queries the response was YES. [2024-11-09 14:53:01,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16186 conditions, 6194 events. 3142/6194 cut-off events. For 4559/4593 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 41142 event pairs, 692 based on Foata normal form. 150/6090 useless extension candidates. Maximal degree in co-relation 16167. Up to 3426 conditions per place. [2024-11-09 14:53:01,362 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 84 selfloop transitions, 5 changer transitions 0/114 dead transitions. [2024-11-09 14:53:01,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 114 transitions, 638 flow [2024-11-09 14:53:01,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 14:53:01,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 14:53:01,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2024-11-09 14:53:01,364 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5668604651162791 [2024-11-09 14:53:01,364 INFO L175 Difference]: Start difference. First operand has 106 places, 88 transitions, 360 flow. Second operand 4 states and 195 transitions. [2024-11-09 14:53:01,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 114 transitions, 638 flow [2024-11-09 14:53:01,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 114 transitions, 618 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-09 14:53:01,381 INFO L231 Difference]: Finished difference. Result has 100 places, 86 transitions, 342 flow [2024-11-09 14:53:01,381 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=342, PETRI_PLACES=100, PETRI_TRANSITIONS=86} [2024-11-09 14:53:01,381 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 22 predicate places. [2024-11-09 14:53:01,381 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 86 transitions, 342 flow [2024-11-09 14:53:01,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:01,382 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:01,382 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] [2024-11-09 14:53:01,400 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 14:53:01,582 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,SelfDestructingSolverStorable13 [2024-11-09 14:53:01,583 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:53:01,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:01,583 INFO L85 PathProgramCache]: Analyzing trace with hash 765770664, now seen corresponding path program 1 times [2024-11-09 14:53:01,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:01,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794863163] [2024-11-09 14:53:01,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:01,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:01,648 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 14:53:01,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:01,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794863163] [2024-11-09 14:53:01,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794863163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:01,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:01,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 14:53:01,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743677028] [2024-11-09 14:53:01,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:01,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 14:53:01,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:01,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 14:53:01,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 14:53:01,662 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 86 [2024-11-09 14:53:01,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 86 transitions, 342 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) [2024-11-09 14:53:01,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:01,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 86 [2024-11-09 14:53:01,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:02,311 INFO L124 PetriNetUnfolderBase]: 2784/5702 cut-off events. [2024-11-09 14:53:02,312 INFO L125 PetriNetUnfolderBase]: For 4398/4418 co-relation queries the response was YES. [2024-11-09 14:53:02,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14799 conditions, 5702 events. 2784/5702 cut-off events. For 4398/4418 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 38279 event pairs, 748 based on Foata normal form. 150/5708 useless extension candidates. Maximal degree in co-relation 14780. Up to 2901 conditions per place. [2024-11-09 14:53:02,357 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 88 selfloop transitions, 6 changer transitions 0/119 dead transitions. [2024-11-09 14:53:02,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 119 transitions, 652 flow [2024-11-09 14:53:02,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 14:53:02,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 14:53:02,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 200 transitions. [2024-11-09 14:53:02,359 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5813953488372093 [2024-11-09 14:53:02,359 INFO L175 Difference]: Start difference. First operand has 100 places, 86 transitions, 342 flow. Second operand 4 states and 200 transitions. [2024-11-09 14:53:02,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 119 transitions, 652 flow [2024-11-09 14:53:02,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 119 transitions, 642 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 14:53:02,375 INFO L231 Difference]: Finished difference. Result has 99 places, 85 transitions, 344 flow [2024-11-09 14:53:02,376 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=344, PETRI_PLACES=99, PETRI_TRANSITIONS=85} [2024-11-09 14:53:02,377 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 21 predicate places. [2024-11-09 14:53:02,377 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 85 transitions, 344 flow [2024-11-09 14:53:02,377 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) [2024-11-09 14:53:02,377 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:02,377 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] [2024-11-09 14:53:02,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 14:53:02,377 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:53:02,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:02,378 INFO L85 PathProgramCache]: Analyzing trace with hash 915903152, now seen corresponding path program 1 times [2024-11-09 14:53:02,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:02,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866527565] [2024-11-09 14:53:02,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:02,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:02,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:02,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:02,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866527565] [2024-11-09 14:53:02,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866527565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:02,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:02,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 14:53:02,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117975947] [2024-11-09 14:53:02,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:02,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 14:53:02,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:02,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 14:53:02,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 14:53:02,478 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 86 [2024-11-09 14:53:02,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 85 transitions, 344 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) [2024-11-09 14:53:02,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:02,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 86 [2024-11-09 14:53:02,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:02,939 INFO L124 PetriNetUnfolderBase]: 1726/3932 cut-off events. [2024-11-09 14:53:02,939 INFO L125 PetriNetUnfolderBase]: For 4074/4074 co-relation queries the response was YES. [2024-11-09 14:53:02,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10482 conditions, 3932 events. 1726/3932 cut-off events. For 4074/4074 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 25710 event pairs, 514 based on Foata normal form. 166/4020 useless extension candidates. Maximal degree in co-relation 10463. Up to 1934 conditions per place. [2024-11-09 14:53:02,962 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 64 selfloop transitions, 6 changer transitions 0/97 dead transitions. [2024-11-09 14:53:02,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 97 transitions, 532 flow [2024-11-09 14:53:02,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 14:53:02,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 14:53:02,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 166 transitions. [2024-11-09 14:53:02,964 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6434108527131783 [2024-11-09 14:53:02,964 INFO L175 Difference]: Start difference. First operand has 99 places, 85 transitions, 344 flow. Second operand 3 states and 166 transitions. [2024-11-09 14:53:02,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 97 transitions, 532 flow [2024-11-09 14:53:02,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 97 transitions, 506 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-09 14:53:02,973 INFO L231 Difference]: Finished difference. Result has 98 places, 80 transitions, 301 flow [2024-11-09 14:53:02,973 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=301, PETRI_PLACES=98, PETRI_TRANSITIONS=80} [2024-11-09 14:53:02,974 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 20 predicate places. [2024-11-09 14:53:02,974 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 80 transitions, 301 flow [2024-11-09 14:53:02,974 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) [2024-11-09 14:53:02,974 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:02,974 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] [2024-11-09 14:53:02,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 14:53:02,975 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:53:02,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:02,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1403479541, now seen corresponding path program 1 times [2024-11-09 14:53:02,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:02,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613402256] [2024-11-09 14:53:02,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:02,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:03,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:03,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:03,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613402256] [2024-11-09 14:53:03,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613402256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:03,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:03,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 14:53:03,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422770415] [2024-11-09 14:53:03,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:03,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 14:53:03,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:03,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 14:53:03,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 14:53:03,519 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 86 [2024-11-09 14:53:03,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 80 transitions, 301 flow. Second operand has 8 states, 8 states have (on average 35.25) internal successors, (282), 8 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:03,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:03,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 86 [2024-11-09 14:53:03,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:04,179 INFO L124 PetriNetUnfolderBase]: 1760/3873 cut-off events. [2024-11-09 14:53:04,180 INFO L125 PetriNetUnfolderBase]: For 3494/3496 co-relation queries the response was YES. [2024-11-09 14:53:04,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10398 conditions, 3873 events. 1760/3873 cut-off events. For 3494/3496 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 24368 event pairs, 300 based on Foata normal form. 36/3817 useless extension candidates. Maximal degree in co-relation 10378. Up to 1708 conditions per place. [2024-11-09 14:53:04,206 INFO L140 encePairwiseOnDemand]: 75/86 looper letters, 116 selfloop transitions, 11 changer transitions 2/154 dead transitions. [2024-11-09 14:53:04,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 154 transitions, 888 flow [2024-11-09 14:53:04,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 14:53:04,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 14:53:04,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 397 transitions. [2024-11-09 14:53:04,208 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5129198966408268 [2024-11-09 14:53:04,209 INFO L175 Difference]: Start difference. First operand has 98 places, 80 transitions, 301 flow. Second operand 9 states and 397 transitions. [2024-11-09 14:53:04,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 154 transitions, 888 flow [2024-11-09 14:53:04,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 154 transitions, 876 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 14:53:04,219 INFO L231 Difference]: Finished difference. Result has 105 places, 79 transitions, 313 flow [2024-11-09 14:53:04,220 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=313, PETRI_PLACES=105, PETRI_TRANSITIONS=79} [2024-11-09 14:53:04,221 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 27 predicate places. [2024-11-09 14:53:04,221 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 79 transitions, 313 flow [2024-11-09 14:53:04,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 35.25) internal successors, (282), 8 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:04,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:04,222 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] [2024-11-09 14:53:04,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 14:53:04,222 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:53:04,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:04,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1224215603, now seen corresponding path program 1 times [2024-11-09 14:53:04,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:04,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648554827] [2024-11-09 14:53:04,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:04,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:05,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:05,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:05,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648554827] [2024-11-09 14:53:05,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648554827] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:05,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:05,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-09 14:53:05,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059510600] [2024-11-09 14:53:05,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:05,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 14:53:05,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:05,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 14:53:05,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-09 14:53:05,648 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 86 [2024-11-09 14:53:05,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 79 transitions, 313 flow. Second operand has 11 states, 11 states have (on average 28.545454545454547) internal successors, (314), 11 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:05,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:05,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 86 [2024-11-09 14:53:05,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:06,646 INFO L124 PetriNetUnfolderBase]: 2182/4649 cut-off events. [2024-11-09 14:53:06,646 INFO L125 PetriNetUnfolderBase]: For 4516/4516 co-relation queries the response was YES. [2024-11-09 14:53:06,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12555 conditions, 4649 events. 2182/4649 cut-off events. For 4516/4516 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 29404 event pairs, 229 based on Foata normal form. 26/4561 useless extension candidates. Maximal degree in co-relation 12534. Up to 1680 conditions per place. [2024-11-09 14:53:06,680 INFO L140 encePairwiseOnDemand]: 73/86 looper letters, 164 selfloop transitions, 13 changer transitions 2/200 dead transitions. [2024-11-09 14:53:06,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 200 transitions, 1192 flow [2024-11-09 14:53:06,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 14:53:06,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-09 14:53:06,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 488 transitions. [2024-11-09 14:53:06,684 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4364937388193202 [2024-11-09 14:53:06,684 INFO L175 Difference]: Start difference. First operand has 105 places, 79 transitions, 313 flow. Second operand 13 states and 488 transitions. [2024-11-09 14:53:06,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 200 transitions, 1192 flow [2024-11-09 14:53:06,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 200 transitions, 1176 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-09 14:53:06,698 INFO L231 Difference]: Finished difference. Result has 115 places, 84 transitions, 365 flow [2024-11-09 14:53:06,698 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=365, PETRI_PLACES=115, PETRI_TRANSITIONS=84} [2024-11-09 14:53:06,699 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 37 predicate places. [2024-11-09 14:53:06,699 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 84 transitions, 365 flow [2024-11-09 14:53:06,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 28.545454545454547) internal successors, (314), 11 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:06,699 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:06,700 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] [2024-11-09 14:53:06,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 14:53:06,700 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:53:06,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:06,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1465375294, now seen corresponding path program 1 times [2024-11-09 14:53:06,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:06,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600814189] [2024-11-09 14:53:06,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:06,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:06,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:06,806 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:06,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:06,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600814189] [2024-11-09 14:53:06,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600814189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:06,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:06,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 14:53:06,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133150807] [2024-11-09 14:53:06,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:06,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 14:53:06,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:06,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 14:53:06,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 14:53:06,811 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 86 [2024-11-09 14:53:06,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 84 transitions, 365 flow. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:06,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:06,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 86 [2024-11-09 14:53:06,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:07,190 INFO L124 PetriNetUnfolderBase]: 1680/3808 cut-off events. [2024-11-09 14:53:07,190 INFO L125 PetriNetUnfolderBase]: For 4493/4500 co-relation queries the response was YES. [2024-11-09 14:53:07,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10332 conditions, 3808 events. 1680/3808 cut-off events. For 4493/4500 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 23501 event pairs, 1011 based on Foata normal form. 30/3752 useless extension candidates. Maximal degree in co-relation 10308. Up to 1855 conditions per place. [2024-11-09 14:53:07,223 INFO L140 encePairwiseOnDemand]: 83/86 looper letters, 71 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2024-11-09 14:53:07,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 101 transitions, 580 flow [2024-11-09 14:53:07,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 14:53:07,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 14:53:07,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 166 transitions. [2024-11-09 14:53:07,224 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6434108527131783 [2024-11-09 14:53:07,224 INFO L175 Difference]: Start difference. First operand has 115 places, 84 transitions, 365 flow. Second operand 3 states and 166 transitions. [2024-11-09 14:53:07,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 101 transitions, 580 flow [2024-11-09 14:53:07,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 101 transitions, 561 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-09 14:53:07,237 INFO L231 Difference]: Finished difference. Result has 110 places, 82 transitions, 342 flow [2024-11-09 14:53:07,237 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=342, PETRI_PLACES=110, PETRI_TRANSITIONS=82} [2024-11-09 14:53:07,237 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 32 predicate places. [2024-11-09 14:53:07,237 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 82 transitions, 342 flow [2024-11-09 14:53:07,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:07,238 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:07,238 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] [2024-11-09 14:53:07,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-09 14:53:07,238 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:53:07,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:07,239 INFO L85 PathProgramCache]: Analyzing trace with hash 748720363, now seen corresponding path program 1 times [2024-11-09 14:53:07,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:07,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018529133] [2024-11-09 14:53:07,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:07,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:08,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:08,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:08,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018529133] [2024-11-09 14:53:08,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018529133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:08,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:08,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-09 14:53:08,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016728281] [2024-11-09 14:53:08,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:08,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 14:53:08,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:08,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 14:53:08,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-09 14:53:08,625 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 86 [2024-11-09 14:53:08,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 82 transitions, 342 flow. Second operand has 11 states, 11 states have (on average 28.545454545454547) internal successors, (314), 11 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:08,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:08,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 86 [2024-11-09 14:53:08,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:09,388 INFO L124 PetriNetUnfolderBase]: 2033/4378 cut-off events. [2024-11-09 14:53:09,388 INFO L125 PetriNetUnfolderBase]: For 4547/4547 co-relation queries the response was YES. [2024-11-09 14:53:09,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11893 conditions, 4378 events. 2033/4378 cut-off events. For 4547/4547 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 26864 event pairs, 285 based on Foata normal form. 26/4310 useless extension candidates. Maximal degree in co-relation 11867. Up to 1061 conditions per place. [2024-11-09 14:53:09,412 INFO L140 encePairwiseOnDemand]: 72/86 looper letters, 154 selfloop transitions, 14 changer transitions 10/199 dead transitions. [2024-11-09 14:53:09,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 199 transitions, 1206 flow [2024-11-09 14:53:09,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 14:53:09,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-09 14:53:09,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 488 transitions. [2024-11-09 14:53:09,415 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4364937388193202 [2024-11-09 14:53:09,415 INFO L175 Difference]: Start difference. First operand has 110 places, 82 transitions, 342 flow. Second operand 13 states and 488 transitions. [2024-11-09 14:53:09,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 199 transitions, 1206 flow [2024-11-09 14:53:09,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 199 transitions, 1195 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 14:53:09,430 INFO L231 Difference]: Finished difference. Result has 120 places, 83 transitions, 378 flow [2024-11-09 14:53:09,430 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=378, PETRI_PLACES=120, PETRI_TRANSITIONS=83} [2024-11-09 14:53:09,430 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 42 predicate places. [2024-11-09 14:53:09,430 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 83 transitions, 378 flow [2024-11-09 14:53:09,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 28.545454545454547) internal successors, (314), 11 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:09,431 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:09,431 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] [2024-11-09 14:53:09,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-09 14:53:09,431 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:53:09,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:09,432 INFO L85 PathProgramCache]: Analyzing trace with hash 2040620382, now seen corresponding path program 1 times [2024-11-09 14:53:09,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:09,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843780660] [2024-11-09 14:53:09,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:09,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:09,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:10,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:10,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:10,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843780660] [2024-11-09 14:53:10,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843780660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:10,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:10,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 14:53:10,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582464195] [2024-11-09 14:53:10,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:10,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 14:53:10,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:10,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 14:53:10,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-09 14:53:10,395 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 86 [2024-11-09 14:53:10,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 83 transitions, 378 flow. Second operand has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:10,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:10,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 86 [2024-11-09 14:53:10,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:11,178 INFO L124 PetriNetUnfolderBase]: 2012/4292 cut-off events. [2024-11-09 14:53:11,179 INFO L125 PetriNetUnfolderBase]: For 5135/5142 co-relation queries the response was YES. [2024-11-09 14:53:11,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11999 conditions, 4292 events. 2012/4292 cut-off events. For 5135/5142 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 25908 event pairs, 280 based on Foata normal form. 52/4287 useless extension candidates. Maximal degree in co-relation 11972. Up to 1301 conditions per place. [2024-11-09 14:53:11,207 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 138 selfloop transitions, 13 changer transitions 16/190 dead transitions. [2024-11-09 14:53:11,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 190 transitions, 1173 flow [2024-11-09 14:53:11,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 14:53:11,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 14:53:11,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 499 transitions. [2024-11-09 14:53:11,210 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48352713178294576 [2024-11-09 14:53:11,210 INFO L175 Difference]: Start difference. First operand has 120 places, 83 transitions, 378 flow. Second operand 12 states and 499 transitions. [2024-11-09 14:53:11,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 190 transitions, 1173 flow [2024-11-09 14:53:11,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 190 transitions, 1153 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-11-09 14:53:11,229 INFO L231 Difference]: Finished difference. Result has 125 places, 86 transitions, 409 flow [2024-11-09 14:53:11,230 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=409, PETRI_PLACES=125, PETRI_TRANSITIONS=86} [2024-11-09 14:53:11,230 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 47 predicate places. [2024-11-09 14:53:11,230 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 86 transitions, 409 flow [2024-11-09 14:53:11,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:11,231 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:11,231 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] [2024-11-09 14:53:11,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-09 14:53:11,231 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:53:11,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:11,232 INFO L85 PathProgramCache]: Analyzing trace with hash 138726922, now seen corresponding path program 1 times [2024-11-09 14:53:11,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:11,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968079449] [2024-11-09 14:53:11,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:11,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:12,541 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:12,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:12,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968079449] [2024-11-09 14:53:12,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968079449] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 14:53:12,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982592589] [2024-11-09 14:53:12,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:12,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:53:12,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:53:12,544 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 14:53:12,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 14:53:12,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:12,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 14:53:12,732 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 14:53:12,886 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 [2024-11-09 14:53:12,922 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 [2024-11-09 14:53:12,978 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 [2024-11-09 14:53:12,989 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 14:53:12,990 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 [2024-11-09 14:53:13,032 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:13,033 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 14:53:13,268 INFO L349 Elim1Store]: treesize reduction 49, result has 52.4 percent of original size [2024-11-09 14:53:13,269 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 204 treesize of output 191 [2024-11-09 14:53:13,296 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 14:53:13,297 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 154 treesize of output 148 [2024-11-09 14:53:13,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 9 treesize of output 5 [2024-11-09 14:53:13,393 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 14:53:13,393 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 185 treesize of output 183 [2024-11-09 14:53:13,689 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:13,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982592589] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 14:53:13,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 14:53:13,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10, 6] total 22 [2024-11-09 14:53:13,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449932092] [2024-11-09 14:53:13,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:13,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 14:53:13,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:13,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 14:53:13,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2024-11-09 14:53:13,709 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 86 [2024-11-09 14:53:13,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 86 transitions, 409 flow. Second operand has 7 states, 7 states have (on average 33.57142857142857) internal successors, (235), 7 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:13,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:13,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 86 [2024-11-09 14:53:13,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:14,531 INFO L124 PetriNetUnfolderBase]: 2078/4353 cut-off events. [2024-11-09 14:53:14,531 INFO L125 PetriNetUnfolderBase]: For 5360/5360 co-relation queries the response was YES. [2024-11-09 14:53:14,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12564 conditions, 4353 events. 2078/4353 cut-off events. For 5360/5360 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 26200 event pairs, 274 based on Foata normal form. 12/4338 useless extension candidates. Maximal degree in co-relation 12533. Up to 2021 conditions per place. [2024-11-09 14:53:14,556 INFO L140 encePairwiseOnDemand]: 75/86 looper letters, 105 selfloop transitions, 15 changer transitions 3/144 dead transitions. [2024-11-09 14:53:14,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 144 transitions, 905 flow [2024-11-09 14:53:14,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 14:53:14,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 14:53:14,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 319 transitions. [2024-11-09 14:53:14,558 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4636627906976744 [2024-11-09 14:53:14,558 INFO L175 Difference]: Start difference. First operand has 125 places, 86 transitions, 409 flow. Second operand 8 states and 319 transitions. [2024-11-09 14:53:14,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 144 transitions, 905 flow [2024-11-09 14:53:14,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 144 transitions, 884 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-11-09 14:53:14,578 INFO L231 Difference]: Finished difference. Result has 122 places, 86 transitions, 423 flow [2024-11-09 14:53:14,578 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=423, PETRI_PLACES=122, PETRI_TRANSITIONS=86} [2024-11-09 14:53:14,579 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 44 predicate places. [2024-11-09 14:53:14,579 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 86 transitions, 423 flow [2024-11-09 14:53:14,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.57142857142857) internal successors, (235), 7 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:14,579 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:14,579 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] [2024-11-09 14:53:14,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 14:53:14,783 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 [2024-11-09 14:53:14,784 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:53:14,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:14,784 INFO L85 PathProgramCache]: Analyzing trace with hash -124522770, now seen corresponding path program 1 times [2024-11-09 14:53:14,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:14,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790150499] [2024-11-09 14:53:14,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:14,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:16,145 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:16,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:16,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790150499] [2024-11-09 14:53:16,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790150499] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 14:53:16,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420422940] [2024-11-09 14:53:16,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:16,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:53:16,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:53:16,148 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 14:53:16,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 14:53:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:16,330 INFO L255 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-11-09 14:53:16,336 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 14:53:16,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2024-11-09 14:53:16,455 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2024-11-09 14:53:16,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 39 [2024-11-09 14:53:16,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-09 14:53:16,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 32 treesize of output 23 [2024-11-09 14:53:16,740 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2024-11-09 14:53:16,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 39 [2024-11-09 14:53:16,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-09 14:53:16,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 33 [2024-11-09 14:53:17,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 43 [2024-11-09 14:53:17,215 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:17,216 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 14:53:19,013 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:19,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420422940] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 14:53:19,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 14:53:19,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 33 [2024-11-09 14:53:19,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310406013] [2024-11-09 14:53:19,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 14:53:19,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-09 14:53:19,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:19,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-09 14:53:19,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=879, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 14:53:19,403 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 86 [2024-11-09 14:53:19,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 86 transitions, 423 flow. Second operand has 34 states, 34 states have (on average 30.029411764705884) internal successors, (1021), 34 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:19,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:19,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 86 [2024-11-09 14:53:19,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:23,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 14:53:29,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.85s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 14:53:30,662 INFO L124 PetriNetUnfolderBase]: 2230/4791 cut-off events. [2024-11-09 14:53:30,663 INFO L125 PetriNetUnfolderBase]: For 6040/6041 co-relation queries the response was YES. [2024-11-09 14:53:30,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13657 conditions, 4791 events. 2230/4791 cut-off events. For 6040/6041 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 28257 event pairs, 334 based on Foata normal form. 46/4783 useless extension candidates. Maximal degree in co-relation 13627. Up to 714 conditions per place. [2024-11-09 14:53:30,689 INFO L140 encePairwiseOnDemand]: 66/86 looper letters, 242 selfloop transitions, 34 changer transitions 27/326 dead transitions. [2024-11-09 14:53:30,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 326 transitions, 2085 flow [2024-11-09 14:53:30,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-09 14:53:30,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-09 14:53:30,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1042 transitions. [2024-11-09 14:53:30,692 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41780272654370487 [2024-11-09 14:53:30,692 INFO L175 Difference]: Start difference. First operand has 122 places, 86 transitions, 423 flow. Second operand 29 states and 1042 transitions. [2024-11-09 14:53:30,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 326 transitions, 2085 flow [2024-11-09 14:53:30,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 326 transitions, 2023 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-11-09 14:53:30,708 INFO L231 Difference]: Finished difference. Result has 151 places, 101 transitions, 574 flow [2024-11-09 14:53:30,708 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=574, PETRI_PLACES=151, PETRI_TRANSITIONS=101} [2024-11-09 14:53:30,708 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 73 predicate places. [2024-11-09 14:53:30,708 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 101 transitions, 574 flow [2024-11-09 14:53:30,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 30.029411764705884) internal successors, (1021), 34 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:30,709 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:30,709 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:30,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 14:53:30,909 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 [2024-11-09 14:53:30,909 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:53:30,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:30,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1061141481, now seen corresponding path program 1 times [2024-11-09 14:53:30,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:30,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130378442] [2024-11-09 14:53:30,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:30,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:32,128 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:32,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:32,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130378442] [2024-11-09 14:53:32,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130378442] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 14:53:32,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279456279] [2024-11-09 14:53:32,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:32,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:53:32,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:53:32,131 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 14:53:32,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 14:53:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:32,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-09 14:53:32,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 14:53:32,516 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 43 treesize of output 21 [2024-11-09 14:53:32,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 14:53:32,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2024-11-09 14:53:32,701 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 41 treesize of output 19 [2024-11-09 14:53:32,756 INFO L349 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2024-11-09 14:53:32,756 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 41 [2024-11-09 14:53:32,797 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 41 treesize of output 19 [2024-11-09 14:53:32,807 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 31 treesize of output 13 [2024-11-09 14:53:32,829 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:32,829 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 14:53:33,318 INFO L349 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size [2024-11-09 14:53:33,319 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 4 case distinctions, treesize of input 123 treesize of output 85 [2024-11-09 14:53:33,327 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 14:53:33,327 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 86 treesize of output 82 [2024-11-09 14:53:33,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 9 [2024-11-09 14:53:33,364 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 14:53:33,365 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 56 treesize of output 44 [2024-11-09 14:53:33,409 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:33,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279456279] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 14:53:33,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 14:53:33,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 10] total 30 [2024-11-09 14:53:33,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471008344] [2024-11-09 14:53:33,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 14:53:33,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-09 14:53:33,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:33,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-09 14:53:33,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=800, Unknown=0, NotChecked=0, Total=930 [2024-11-09 14:53:33,431 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 86 [2024-11-09 14:53:33,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 101 transitions, 574 flow. Second operand has 31 states, 31 states have (on average 33.96774193548387) internal successors, (1053), 31 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:33,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:33,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 86 [2024-11-09 14:53:33,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:35,388 INFO L124 PetriNetUnfolderBase]: 2178/4664 cut-off events. [2024-11-09 14:53:35,388 INFO L125 PetriNetUnfolderBase]: For 5994/5998 co-relation queries the response was YES. [2024-11-09 14:53:35,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13674 conditions, 4664 events. 2178/4664 cut-off events. For 5994/5998 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 26340 event pairs, 343 based on Foata normal form. 44/4669 useless extension candidates. Maximal degree in co-relation 13637. Up to 881 conditions per place. [2024-11-09 14:53:35,416 INFO L140 encePairwiseOnDemand]: 70/86 looper letters, 183 selfloop transitions, 35 changer transitions 17/257 dead transitions. [2024-11-09 14:53:35,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 257 transitions, 1744 flow [2024-11-09 14:53:35,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 14:53:35,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-09 14:53:35,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 885 transitions. [2024-11-09 14:53:35,418 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44742163801820023 [2024-11-09 14:53:35,419 INFO L175 Difference]: Start difference. First operand has 151 places, 101 transitions, 574 flow. Second operand 23 states and 885 transitions. [2024-11-09 14:53:35,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 257 transitions, 1744 flow [2024-11-09 14:53:35,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 257 transitions, 1699 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-11-09 14:53:35,437 INFO L231 Difference]: Finished difference. Result has 158 places, 100 transitions, 593 flow [2024-11-09 14:53:35,438 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=593, PETRI_PLACES=158, PETRI_TRANSITIONS=100} [2024-11-09 14:53:35,438 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 80 predicate places. [2024-11-09 14:53:35,438 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 100 transitions, 593 flow [2024-11-09 14:53:35,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 33.96774193548387) internal successors, (1053), 31 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:35,439 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:35,439 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:35,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 14:53:35,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-09 14:53:35,640 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:53:35,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:35,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1452980621, now seen corresponding path program 1 times [2024-11-09 14:53:35,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:35,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648544431] [2024-11-09 14:53:35,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:35,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:37,302 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:37,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:37,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648544431] [2024-11-09 14:53:37,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648544431] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 14:53:37,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617682964] [2024-11-09 14:53:37,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:37,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:53:37,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:53:37,305 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 14:53:37,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 14:53:37,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:37,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-09 14:53:37,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 14:53:37,652 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 [2024-11-09 14:53:37,702 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 [2024-11-09 14:53:37,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 14:53:37,784 INFO L349 Elim1Store]: treesize reduction 48, result has 39.2 percent of original size [2024-11-09 14:53:37,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 71 [2024-11-09 14:53:37,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 14:53:37,976 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 14:53:37,994 INFO L349 Elim1Store]: treesize reduction 30, result has 44.4 percent of original size [2024-11-09 14:53:37,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 92 treesize of output 74 [2024-11-09 14:53:38,136 INFO L349 Elim1Store]: treesize reduction 30, result has 44.4 percent of original size [2024-11-09 14:53:38,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 75 treesize of output 63 [2024-11-09 14:53:38,178 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 21 treesize of output 9 [2024-11-09 14:53:38,192 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:38,192 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 14:53:42,877 INFO L349 Elim1Store]: treesize reduction 49, result has 52.4 percent of original size [2024-11-09 14:53:42,877 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 204 treesize of output 191 [2024-11-09 14:53:42,902 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 14:53:42,903 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 154 treesize of output 148 [2024-11-09 14:53:42,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 9 treesize of output 5 [2024-11-09 14:53:42,995 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 14:53:42,995 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 190 treesize of output 188 [2024-11-09 14:53:43,378 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:43,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617682964] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 14:53:43,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 14:53:43,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 30 [2024-11-09 14:53:43,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989686102] [2024-11-09 14:53:43,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 14:53:43,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-09 14:53:43,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:43,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-09 14:53:43,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=792, Unknown=1, NotChecked=0, Total=930 [2024-11-09 14:53:43,654 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 86 [2024-11-09 14:53:43,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 100 transitions, 593 flow. Second operand has 31 states, 31 states have (on average 29.419354838709676) internal successors, (912), 31 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:43,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:43,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 86 [2024-11-09 14:53:43,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:45,858 INFO L124 PetriNetUnfolderBase]: 2182/4658 cut-off events. [2024-11-09 14:53:45,858 INFO L125 PetriNetUnfolderBase]: For 6359/6359 co-relation queries the response was YES. [2024-11-09 14:53:45,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13618 conditions, 4658 events. 2182/4658 cut-off events. For 6359/6359 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 26043 event pairs, 151 based on Foata normal form. 18/4645 useless extension candidates. Maximal degree in co-relation 13582. Up to 702 conditions per place. [2024-11-09 14:53:45,881 INFO L140 encePairwiseOnDemand]: 70/86 looper letters, 211 selfloop transitions, 35 changer transitions 22/289 dead transitions. [2024-11-09 14:53:45,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 289 transitions, 1961 flow [2024-11-09 14:53:45,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-09 14:53:45,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-09 14:53:45,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 841 transitions. [2024-11-09 14:53:45,883 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3911627906976744 [2024-11-09 14:53:45,883 INFO L175 Difference]: Start difference. First operand has 158 places, 100 transitions, 593 flow. Second operand 25 states and 841 transitions. [2024-11-09 14:53:45,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 289 transitions, 1961 flow [2024-11-09 14:53:45,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 289 transitions, 1860 flow, removed 11 selfloop flow, removed 25 redundant places. [2024-11-09 14:53:45,900 INFO L231 Difference]: Finished difference. Result has 155 places, 99 transitions, 556 flow [2024-11-09 14:53:45,900 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=556, PETRI_PLACES=155, PETRI_TRANSITIONS=99} [2024-11-09 14:53:45,900 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 77 predicate places. [2024-11-09 14:53:45,901 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 99 transitions, 556 flow [2024-11-09 14:53:45,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 29.419354838709676) internal successors, (912), 31 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:45,901 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:45,901 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:45,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 14:53:46,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:53:46,102 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:53:46,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:46,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1360939829, now seen corresponding path program 1 times [2024-11-09 14:53:46,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:46,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5924677] [2024-11-09 14:53:46,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:46,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:46,450 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 14:53:46,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:46,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5924677] [2024-11-09 14:53:46,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5924677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:46,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:46,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 14:53:46,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40322559] [2024-11-09 14:53:46,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:46,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 14:53:46,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:46,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 14:53:46,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 14:53:46,463 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 86 [2024-11-09 14:53:46,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 99 transitions, 556 flow. Second operand has 6 states, 6 states have (on average 41.666666666666664) internal successors, (250), 6 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:46,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:46,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 86 [2024-11-09 14:53:46,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:47,188 INFO L124 PetriNetUnfolderBase]: 2084/4552 cut-off events. [2024-11-09 14:53:47,189 INFO L125 PetriNetUnfolderBase]: For 5799/5799 co-relation queries the response was YES. [2024-11-09 14:53:47,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12845 conditions, 4552 events. 2084/4552 cut-off events. For 5799/5799 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 26237 event pairs, 1359 based on Foata normal form. 18/4521 useless extension candidates. Maximal degree in co-relation 12817. Up to 2688 conditions per place. [2024-11-09 14:53:47,217 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 72 selfloop transitions, 18 changer transitions 0/114 dead transitions. [2024-11-09 14:53:47,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 114 transitions, 805 flow [2024-11-09 14:53:47,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 14:53:47,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 14:53:47,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 225 transitions. [2024-11-09 14:53:47,218 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5232558139534884 [2024-11-09 14:53:47,218 INFO L175 Difference]: Start difference. First operand has 155 places, 99 transitions, 556 flow. Second operand 5 states and 225 transitions. [2024-11-09 14:53:47,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 114 transitions, 805 flow [2024-11-09 14:53:47,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 114 transitions, 710 flow, removed 2 selfloop flow, removed 25 redundant places. [2024-11-09 14:53:47,229 INFO L231 Difference]: Finished difference. Result has 131 places, 98 transitions, 491 flow [2024-11-09 14:53:47,230 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=491, PETRI_PLACES=131, PETRI_TRANSITIONS=98} [2024-11-09 14:53:47,230 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 53 predicate places. [2024-11-09 14:53:47,230 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 98 transitions, 491 flow [2024-11-09 14:53:47,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 41.666666666666664) internal successors, (250), 6 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:47,230 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:47,231 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:47,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-09 14:53:47,231 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-11-09 14:53:47,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:47,231 INFO L85 PathProgramCache]: Analyzing trace with hash 672806172, now seen corresponding path program 1 times [2024-11-09 14:53:47,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:47,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896713962] [2024-11-09 14:53:47,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:47,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:47,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:48,182 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:48,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:48,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896713962] [2024-11-09 14:53:48,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896713962] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 14:53:48,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490104497] [2024-11-09 14:53:48,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:48,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:53:48,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:53:48,185 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 14:53:48,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 14:53:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:48,392 INFO L255 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-09 14:53:48,397 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 14:53:48,579 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 [2024-11-09 14:53:48,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 14:53:48,685 INFO L349 Elim1Store]: treesize reduction 48, result has 39.2 percent of original size [2024-11-09 14:53:48,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 58 [2024-11-09 14:53:48,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 14:53:48,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 14:53:48,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 34 [2024-11-09 14:53:48,946 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 14:53:48,947 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 30 [2024-11-09 14:53:49,063 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 14:53:49,063 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 28 [2024-11-09 14:53:49,072 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 14:53:49,072 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 31 treesize of output 13 [2024-11-09 14:53:49,089 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:49,089 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 14:53:49,689 INFO L349 Elim1Store]: treesize reduction 36, result has 59.6 percent of original size [2024-11-09 14:53:49,690 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 4 case distinctions, treesize of input 113 treesize of output 133 [2024-11-09 14:53:49,703 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 14:53:49,703 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 131 treesize of output 125 [2024-11-09 14:53:49,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 9 treesize of output 5 [2024-11-09 14:53:49,820 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 14:53:49,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 211 treesize of output 153 [2024-11-09 14:53:49,971 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:49,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490104497] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 14:53:49,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 14:53:49,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 10] total 26 [2024-11-09 14:53:49,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525101486] [2024-11-09 14:53:49,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 14:53:49,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-09 14:53:49,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:49,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-09 14:53:49,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2024-11-09 14:53:50,089 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 86 [2024-11-09 14:53:50,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 98 transitions, 491 flow. Second operand has 27 states, 27 states have (on average 32.851851851851855) internal successors, (887), 27 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:50,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:50,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 86 [2024-11-09 14:53:50,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand