./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/stack_longer-2.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/stack_longer-2.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 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 14:53:31,282 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 14:53:31,336 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 14:53:31,339 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 14:53:31,339 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 14:53:31,363 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 14:53:31,363 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 14:53:31,365 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 14:53:31,365 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 14:53:31,365 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 14:53:31,365 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 14:53:31,366 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 14:53:31,366 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 14:53:31,366 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 14:53:31,366 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 14:53:31,367 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 14:53:31,367 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 14:53:31,367 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 14:53:31,367 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 14:53:31,367 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 14:53:31,368 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 14:53:31,368 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 14:53:31,368 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 14:53:31,369 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 14:53:31,369 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 14:53:31,369 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 14:53:31,369 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 14:53:31,369 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 14:53:31,370 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 14:53:31,370 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 14:53:31,370 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 14:53:31,370 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 14:53:31,370 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 14:53:31,371 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 14:53:31,371 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 14:53:31,371 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 14:53:31,371 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 14:53:31,371 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 14:53:31,372 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 14:53:31,372 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 14:53:31,372 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 14:53:31,372 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 14:53:31,372 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 14:53:31,373 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 14:53:31,373 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 [2024-11-09 14:53:31,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 14:53:31,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 14:53:31,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 14:53:31,574 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 14:53:31,574 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 14:53:31,575 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/stack_longer-2.i [2024-11-09 14:53:32,810 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 14:53:33,003 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 14:53:33,003 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-2.i [2024-11-09 14:53:33,021 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89c1654ca/208fb0be2ce544a58dfb2cb233fa9254/FLAG46d35608d [2024-11-09 14:53:33,372 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89c1654ca/208fb0be2ce544a58dfb2cb233fa9254 [2024-11-09 14:53:33,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 14:53:33,375 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 14:53:33,376 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 14:53:33,376 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 14:53:33,380 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 14:53:33,380 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:53:33" (1/1) ... [2024-11-09 14:53:33,381 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b94dab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:53:33, skipping insertion in model container [2024-11-09 14:53:33,381 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:53:33" (1/1) ... [2024-11-09 14:53:33,410 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 14:53:33,762 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 14:53:33,783 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 14:53:33,831 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 14:53:33,895 INFO L204 MainTranslator]: Completed translation [2024-11-09 14:53:33,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:53:33 WrapperNode [2024-11-09 14:53:33,896 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 14:53:33,897 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 14:53:33,897 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 14:53:33,897 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 14:53:33,902 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:53:33" (1/1) ... [2024-11-09 14:53:33,924 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:53:33" (1/1) ... [2024-11-09 14:53:33,973 INFO L138 Inliner]: procedures = 277, calls = 431, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 557 [2024-11-09 14:53:33,974 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 14:53:33,974 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 14:53:33,974 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 14:53:33,974 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 14:53:33,982 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:53:33" (1/1) ... [2024-11-09 14:53:33,983 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:53:33" (1/1) ... [2024-11-09 14:53:33,987 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:53:33" (1/1) ... [2024-11-09 14:53:34,012 INFO L175 MemorySlicer]: Split 409 memory accesses to 3 slices as follows [2, 402, 5]. 98 percent of accesses are in the largest equivalence class. The 407 initializations are split as follows [2, 400, 5]. The 1 writes are split as follows [0, 1, 0]. [2024-11-09 14:53:34,015 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:53:33" (1/1) ... [2024-11-09 14:53:34,015 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:53:33" (1/1) ... [2024-11-09 14:53:34,032 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:53:33" (1/1) ... [2024-11-09 14:53:34,037 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:53:33" (1/1) ... [2024-11-09 14:53:34,042 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:53:33" (1/1) ... [2024-11-09 14:53:34,043 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:53:33" (1/1) ... [2024-11-09 14:53:34,046 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 14:53:34,047 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 14:53:34,047 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 14:53:34,047 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 14:53:34,048 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:53:33" (1/1) ... [2024-11-09 14:53:34,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 14:53:34,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:53:34,079 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 14:53:34,082 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 14:53:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-09 14:53:34,117 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-09 14:53:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-09 14:53:34,117 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-09 14:53:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 14:53:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 14:53:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 14:53:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 14:53:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 14:53:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 14:53:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 14:53:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 14:53:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 14:53:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 14:53:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 14:53:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 14:53:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 14:53:34,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 14:53:34,121 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 14:53:34,223 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 14:53:34,225 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 14:53:34,816 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 14:53:34,817 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 14:53:38,082 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 14:53:38,082 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 14:53:38,083 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:53:38 BoogieIcfgContainer [2024-11-09 14:53:38,083 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 14:53:38,084 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 14:53:38,085 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 14:53:38,091 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 14:53:38,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:53:33" (1/3) ... [2024-11-09 14:53:38,091 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b478ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:53:38, skipping insertion in model container [2024-11-09 14:53:38,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:53:33" (2/3) ... [2024-11-09 14:53:38,092 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b478ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:53:38, skipping insertion in model container [2024-11-09 14:53:38,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:53:38" (3/3) ... [2024-11-09 14:53:38,093 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2024-11-09 14:53:38,109 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 14:53:38,110 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-09 14:53:38,110 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 14:53:38,172 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 14:53:38,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 48 transitions, 110 flow [2024-11-09 14:53:38,238 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2024-11-09 14:53:38,238 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 14:53:38,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 46 events. 5/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 122 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2024-11-09 14:53:38,242 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 48 transitions, 110 flow [2024-11-09 14:53:38,244 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 44 transitions, 97 flow [2024-11-09 14:53:38,253 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 14:53:38,259 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;@7c9b28a6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 14:53:38,260 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-09 14:53:38,276 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 14:53:38,276 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2024-11-09 14:53:38,276 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 14:53:38,277 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:38,277 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:38,278 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:53:38,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:38,282 INFO L85 PathProgramCache]: Analyzing trace with hash 911882842, now seen corresponding path program 1 times [2024-11-09 14:53:38,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:38,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395285866] [2024-11-09 14:53:38,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:38,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:38,741 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 14:53:38,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:38,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395285866] [2024-11-09 14:53:38,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395285866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:38,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:38,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 14:53:38,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861893961] [2024-11-09 14:53:38,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:38,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 14:53:38,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:38,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 14:53:38,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 14:53:38,787 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-09 14:53:38,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:38,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:38,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-09 14:53:38,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:39,057 INFO L124 PetriNetUnfolderBase]: 730/1443 cut-off events. [2024-11-09 14:53:39,058 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-11-09 14:53:39,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2677 conditions, 1443 events. 730/1443 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 7566 event pairs, 224 based on Foata normal form. 40/1335 useless extension candidates. Maximal degree in co-relation 2570. Up to 692 conditions per place. [2024-11-09 14:53:39,072 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 58 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2024-11-09 14:53:39,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 77 transitions, 298 flow [2024-11-09 14:53:39,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 14:53:39,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 14:53:39,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-11-09 14:53:39,084 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-11-09 14:53:39,086 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 97 flow. Second operand 4 states and 132 transitions. [2024-11-09 14:53:39,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 77 transitions, 298 flow [2024-11-09 14:53:39,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 77 transitions, 289 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 14:53:39,094 INFO L231 Difference]: Finished difference. Result has 48 places, 47 transitions, 128 flow [2024-11-09 14:53:39,097 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=48, PETRI_TRANSITIONS=47} [2024-11-09 14:53:39,099 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2024-11-09 14:53:39,099 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 47 transitions, 128 flow [2024-11-09 14:53:39,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:39,100 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:39,100 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:39,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 14:53:39,102 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:53:39,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:39,103 INFO L85 PathProgramCache]: Analyzing trace with hash 389953725, now seen corresponding path program 1 times [2024-11-09 14:53:39,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:39,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333652270] [2024-11-09 14:53:39,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:39,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:39,250 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 14:53:39,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:39,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333652270] [2024-11-09 14:53:39,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333652270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:39,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:39,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 14:53:39,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171035432] [2024-11-09 14:53:39,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:39,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 14:53:39,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:39,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 14:53:39,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 14:53:39,352 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-09 14:53:39,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:39,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:39,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-09 14:53:39,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:39,611 INFO L124 PetriNetUnfolderBase]: 1180/2392 cut-off events. [2024-11-09 14:53:39,612 INFO L125 PetriNetUnfolderBase]: For 338/338 co-relation queries the response was YES. [2024-11-09 14:53:39,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4819 conditions, 2392 events. 1180/2392 cut-off events. For 338/338 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 13827 event pairs, 613 based on Foata normal form. 74/2303 useless extension candidates. Maximal degree in co-relation 4166. Up to 1299 conditions per place. [2024-11-09 14:53:39,623 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 71 selfloop transitions, 3 changer transitions 0/88 dead transitions. [2024-11-09 14:53:39,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 88 transitions, 399 flow [2024-11-09 14:53:39,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 14:53:39,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 14:53:39,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-11-09 14:53:39,627 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-11-09 14:53:39,627 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 128 flow. Second operand 4 states and 132 transitions. [2024-11-09 14:53:39,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 88 transitions, 399 flow [2024-11-09 14:53:39,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 88 transitions, 399 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 14:53:39,631 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 152 flow [2024-11-09 14:53:39,631 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2024-11-09 14:53:39,632 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 7 predicate places. [2024-11-09 14:53:39,632 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 152 flow [2024-11-09 14:53:39,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:39,632 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:39,632 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:39,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 14:53:39,633 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:53:39,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:39,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1936799459, now seen corresponding path program 1 times [2024-11-09 14:53:39,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:39,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676065164] [2024-11-09 14:53:39,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:39,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:39,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:39,746 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 14:53:39,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:39,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676065164] [2024-11-09 14:53:39,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676065164] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:39,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:39,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 14:53:39,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914028234] [2024-11-09 14:53:39,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:39,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 14:53:39,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:39,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 14:53:39,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 14:53:39,763 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-09 14:53:39,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:39,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:39,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-09 14:53:39,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:40,018 INFO L124 PetriNetUnfolderBase]: 1703/3321 cut-off events. [2024-11-09 14:53:40,018 INFO L125 PetriNetUnfolderBase]: For 993/1039 co-relation queries the response was YES. [2024-11-09 14:53:40,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7351 conditions, 3321 events. 1703/3321 cut-off events. For 993/1039 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 21038 event pairs, 837 based on Foata normal form. 82/3284 useless extension candidates. Maximal degree in co-relation 5256. Up to 1936 conditions per place. [2024-11-09 14:53:40,035 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 72 selfloop transitions, 3 changer transitions 0/89 dead transitions. [2024-11-09 14:53:40,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 89 transitions, 439 flow [2024-11-09 14:53:40,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 14:53:40,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 14:53:40,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-11-09 14:53:40,039 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6927083333333334 [2024-11-09 14:53:40,039 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 152 flow. Second operand 4 states and 133 transitions. [2024-11-09 14:53:40,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 89 transitions, 439 flow [2024-11-09 14:53:40,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 89 transitions, 433 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 14:53:40,044 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 174 flow [2024-11-09 14:53:40,044 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-11-09 14:53:40,044 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2024-11-09 14:53:40,045 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 174 flow [2024-11-09 14:53:40,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:40,045 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:40,045 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:40,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 14:53:40,046 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:53:40,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:40,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1974550093, now seen corresponding path program 1 times [2024-11-09 14:53:40,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:40,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843772470] [2024-11-09 14:53:40,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:40,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:40,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:40,231 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 14:53:40,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:40,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843772470] [2024-11-09 14:53:40,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843772470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:40,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:40,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 14:53:40,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307821762] [2024-11-09 14:53:40,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:40,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 14:53:40,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:40,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 14:53:40,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 14:53:40,234 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-11-09 14:53:40,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:40,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:40,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-11-09 14:53:40,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:40,473 INFO L124 PetriNetUnfolderBase]: 898/2002 cut-off events. [2024-11-09 14:53:40,474 INFO L125 PetriNetUnfolderBase]: For 981/1077 co-relation queries the response was YES. [2024-11-09 14:53:40,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4746 conditions, 2002 events. 898/2002 cut-off events. For 981/1077 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 11967 event pairs, 285 based on Foata normal form. 76/2030 useless extension candidates. Maximal degree in co-relation 3692. Up to 946 conditions per place. [2024-11-09 14:53:40,482 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 46 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2024-11-09 14:53:40,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 66 transitions, 334 flow [2024-11-09 14:53:40,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 14:53:40,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 14:53:40,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-11-09 14:53:40,484 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-09 14:53:40,484 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 174 flow. Second operand 3 states and 96 transitions. [2024-11-09 14:53:40,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 66 transitions, 334 flow [2024-11-09 14:53:40,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 66 transitions, 328 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 14:53:40,487 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 173 flow [2024-11-09 14:53:40,487 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-11-09 14:53:40,488 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 12 predicate places. [2024-11-09 14:53:40,488 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 173 flow [2024-11-09 14:53:40,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:40,488 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:40,489 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:40,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 14:53:40,489 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:53:40,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:40,489 INFO L85 PathProgramCache]: Analyzing trace with hash -320082799, now seen corresponding path program 1 times [2024-11-09 14:53:40,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:40,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416077835] [2024-11-09 14:53:40,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:40,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:40,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:40,637 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:40,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:40,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416077835] [2024-11-09 14:53:40,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416077835] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 14:53:40,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941171806] [2024-11-09 14:53:40,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:40,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:53:40,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:53:40,640 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 14:53:40,642 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 14:53:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:40,799 INFO L255 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 14:53:40,803 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 14:53:40,848 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 14:53:40,848 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 14:53:40,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941171806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:40,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 14:53:40,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 14:53:40,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320542076] [2024-11-09 14:53:40,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:40,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 14:53:40,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:40,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 14:53:40,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 14:53:40,857 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-09 14:53:40,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:40,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:40,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-09 14:53:40,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:41,096 INFO L124 PetriNetUnfolderBase]: 931/2010 cut-off events. [2024-11-09 14:53:41,096 INFO L125 PetriNetUnfolderBase]: For 1022/1128 co-relation queries the response was YES. [2024-11-09 14:53:41,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4978 conditions, 2010 events. 931/2010 cut-off events. For 1022/1128 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 11432 event pairs, 189 based on Foata normal form. 70/2023 useless extension candidates. Maximal degree in co-relation 2701. Up to 735 conditions per place. [2024-11-09 14:53:41,107 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 87 selfloop transitions, 9 changer transitions 0/109 dead transitions. [2024-11-09 14:53:41,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 109 transitions, 587 flow [2024-11-09 14:53:41,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 14:53:41,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 14:53:41,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-11-09 14:53:41,110 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2024-11-09 14:53:41,110 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 173 flow. Second operand 7 states and 188 transitions. [2024-11-09 14:53:41,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 109 transitions, 587 flow [2024-11-09 14:53:41,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 109 transitions, 577 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 14:53:41,113 INFO L231 Difference]: Finished difference. Result has 66 places, 54 transitions, 229 flow [2024-11-09 14:53:41,113 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=229, PETRI_PLACES=66, PETRI_TRANSITIONS=54} [2024-11-09 14:53:41,115 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 20 predicate places. [2024-11-09 14:53:41,116 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 54 transitions, 229 flow [2024-11-09 14:53:41,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:41,117 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:41,117 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:41,132 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 14:53:41,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:53:41,318 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:53:41,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:41,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1914927706, now seen corresponding path program 1 times [2024-11-09 14:53:41,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:41,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474997809] [2024-11-09 14:53:41,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:41,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:41,388 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 14:53:41,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:41,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474997809] [2024-11-09 14:53:41,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474997809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:41,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:41,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 14:53:41,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539468110] [2024-11-09 14:53:41,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:41,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 14:53:41,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:41,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 14:53:41,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 14:53:41,395 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-09 14:53:41,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 229 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 14:53:41,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:41,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-09 14:53:41,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:41,617 INFO L124 PetriNetUnfolderBase]: 1173/2605 cut-off events. [2024-11-09 14:53:41,618 INFO L125 PetriNetUnfolderBase]: For 2091/2209 co-relation queries the response was YES. [2024-11-09 14:53:41,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6743 conditions, 2605 events. 1173/2605 cut-off events. For 2091/2209 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 16444 event pairs, 646 based on Foata normal form. 26/2624 useless extension candidates. Maximal degree in co-relation 5210. Up to 1363 conditions per place. [2024-11-09 14:53:41,633 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 63 selfloop transitions, 7 changer transitions 0/84 dead transitions. [2024-11-09 14:53:41,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 84 transitions, 494 flow [2024-11-09 14:53:41,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 14:53:41,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 14:53:41,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-11-09 14:53:41,635 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5989583333333334 [2024-11-09 14:53:41,635 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 229 flow. Second operand 4 states and 115 transitions. [2024-11-09 14:53:41,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 84 transitions, 494 flow [2024-11-09 14:53:41,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 84 transitions, 486 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-09 14:53:41,640 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 271 flow [2024-11-09 14:53:41,641 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2024-11-09 14:53:41,643 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 22 predicate places. [2024-11-09 14:53:41,643 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 271 flow [2024-11-09 14:53:41,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 14:53:41,643 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:41,643 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:41,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 14:53:41,643 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:53:41,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:41,643 INFO L85 PathProgramCache]: Analyzing trace with hash 431882451, now seen corresponding path program 1 times [2024-11-09 14:53:41,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:41,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465221407] [2024-11-09 14:53:41,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:41,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:41,780 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 14:53:41,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:41,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465221407] [2024-11-09 14:53:41,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465221407] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 14:53:41,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580652711] [2024-11-09 14:53:41,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:41,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:53:41,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:53:41,783 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 14:53:41,784 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 14:53:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:41,945 INFO L255 TraceCheckSpWp]: Trace formula consists of 930 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 14:53:41,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 14:53:41,982 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 14:53:41,982 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 14:53:41,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580652711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:41,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 14:53:41,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-09 14:53:41,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183668490] [2024-11-09 14:53:41,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:41,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 14:53:41,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:41,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 14:53:41,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-09 14:53:41,990 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-09 14:53:41,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 271 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:41,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:41,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-09 14:53:41,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:42,323 INFO L124 PetriNetUnfolderBase]: 1483/2948 cut-off events. [2024-11-09 14:53:42,323 INFO L125 PetriNetUnfolderBase]: For 3260/3346 co-relation queries the response was YES. [2024-11-09 14:53:42,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8046 conditions, 2948 events. 1483/2948 cut-off events. For 3260/3346 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 17482 event pairs, 245 based on Foata normal form. 79/2946 useless extension candidates. Maximal degree in co-relation 6189. Up to 1306 conditions per place. [2024-11-09 14:53:42,343 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 78 selfloop transitions, 5 changer transitions 0/96 dead transitions. [2024-11-09 14:53:42,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 96 transitions, 653 flow [2024-11-09 14:53:42,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 14:53:42,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 14:53:42,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-11-09 14:53:42,345 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-09 14:53:42,346 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 271 flow. Second operand 4 states and 116 transitions. [2024-11-09 14:53:42,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 96 transitions, 653 flow [2024-11-09 14:53:42,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 96 transitions, 651 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 14:53:42,353 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 275 flow [2024-11-09 14:53:42,353 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=275, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2024-11-09 14:53:42,354 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2024-11-09 14:53:42,354 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 275 flow [2024-11-09 14:53:42,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:42,355 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:42,355 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:42,370 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 14:53:42,555 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,SelfDestructingSolverStorable6 [2024-11-09 14:53:42,556 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:53:42,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:42,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1332630911, now seen corresponding path program 1 times [2024-11-09 14:53:42,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:42,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122642866] [2024-11-09 14:53:42,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:42,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:42,779 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 14:53:42,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:42,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122642866] [2024-11-09 14:53:42,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122642866] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 14:53:42,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55405417] [2024-11-09 14:53:42,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:42,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:53:42,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:53:42,781 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 14:53:42,782 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 14:53:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:42,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 14:53:42,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 14:53:42,959 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 14:53:42,959 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 14:53:43,001 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 14:53:43,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55405417] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 14:53:43,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 14:53:43,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-09 14:53:43,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822570113] [2024-11-09 14:53:43,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 14:53:43,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 14:53:43,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:43,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 14:53:43,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 14:53:43,015 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-09 14:53:43,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 275 flow. Second operand has 12 states, 12 states have (on average 18.083333333333332) internal successors, (217), 12 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:43,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:43,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-09 14:53:43,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:43,638 INFO L124 PetriNetUnfolderBase]: 2547/5453 cut-off events. [2024-11-09 14:53:43,639 INFO L125 PetriNetUnfolderBase]: For 8542/8788 co-relation queries the response was YES. [2024-11-09 14:53:43,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15524 conditions, 5453 events. 2547/5453 cut-off events. For 8542/8788 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 35097 event pairs, 407 based on Foata normal form. 151/5603 useless extension candidates. Maximal degree in co-relation 8199. Up to 1167 conditions per place. [2024-11-09 14:53:43,669 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 191 selfloop transitions, 33 changer transitions 0/235 dead transitions. [2024-11-09 14:53:43,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 235 transitions, 1624 flow [2024-11-09 14:53:43,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 14:53:43,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-09 14:53:43,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 426 transitions. [2024-11-09 14:53:43,671 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2024-11-09 14:53:43,671 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 275 flow. Second operand 16 states and 426 transitions. [2024-11-09 14:53:43,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 235 transitions, 1624 flow [2024-11-09 14:53:43,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 235 transitions, 1502 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-09 14:53:43,681 INFO L231 Difference]: Finished difference. Result has 86 places, 85 transitions, 594 flow [2024-11-09 14:53:43,681 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=594, PETRI_PLACES=86, PETRI_TRANSITIONS=85} [2024-11-09 14:53:43,681 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 40 predicate places. [2024-11-09 14:53:43,681 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 85 transitions, 594 flow [2024-11-09 14:53:43,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.083333333333332) internal successors, (217), 12 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:43,682 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:43,682 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 14:53:43,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 14:53:43,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:53:43,884 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:53:43,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:43,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1309566049, now seen corresponding path program 1 times [2024-11-09 14:53:43,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:43,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280311861] [2024-11-09 14:53:43,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:43,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:43,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:43,997 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 14:53:43,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:43,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280311861] [2024-11-09 14:53:43,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280311861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:43,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:43,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 14:53:43,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901284275] [2024-11-09 14:53:43,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:43,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 14:53:43,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:43,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 14:53:43,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 14:53:44,012 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-09 14:53:44,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 85 transitions, 594 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 14:53:44,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:44,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-09 14:53:44,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:44,486 INFO L124 PetriNetUnfolderBase]: 2796/5802 cut-off events. [2024-11-09 14:53:44,487 INFO L125 PetriNetUnfolderBase]: For 9962/10299 co-relation queries the response was YES. [2024-11-09 14:53:44,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16734 conditions, 5802 events. 2796/5802 cut-off events. For 9962/10299 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 37042 event pairs, 564 based on Foata normal form. 39/5836 useless extension candidates. Maximal degree in co-relation 13945. Up to 3403 conditions per place. [2024-11-09 14:53:44,521 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 119 selfloop transitions, 13 changer transitions 0/142 dead transitions. [2024-11-09 14:53:44,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 142 transitions, 1117 flow [2024-11-09 14:53:44,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 14:53:44,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 14:53:44,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 163 transitions. [2024-11-09 14:53:44,523 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5659722222222222 [2024-11-09 14:53:44,523 INFO L175 Difference]: Start difference. First operand has 86 places, 85 transitions, 594 flow. Second operand 6 states and 163 transitions. [2024-11-09 14:53:44,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 142 transitions, 1117 flow [2024-11-09 14:53:44,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 142 transitions, 1075 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-11-09 14:53:44,538 INFO L231 Difference]: Finished difference. Result has 91 places, 90 transitions, 653 flow [2024-11-09 14:53:44,539 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=653, PETRI_PLACES=91, PETRI_TRANSITIONS=90} [2024-11-09 14:53:44,539 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 45 predicate places. [2024-11-09 14:53:44,539 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 90 transitions, 653 flow [2024-11-09 14:53:44,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 14:53:44,540 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:44,540 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:44,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 14:53:44,540 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:53:44,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:44,540 INFO L85 PathProgramCache]: Analyzing trace with hash 503455384, now seen corresponding path program 1 times [2024-11-09 14:53:44,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:44,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466782753] [2024-11-09 14:53:44,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:44,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:44,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:44,610 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 14:53:44,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:44,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466782753] [2024-11-09 14:53:44,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466782753] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:44,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:44,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 14:53:44,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826690976] [2024-11-09 14:53:44,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:44,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 14:53:44,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:44,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 14:53:44,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 14:53:44,616 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-09 14:53:44,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 90 transitions, 653 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:44,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:44,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-09 14:53:44,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:45,372 INFO L124 PetriNetUnfolderBase]: 3062/6447 cut-off events. [2024-11-09 14:53:45,373 INFO L125 PetriNetUnfolderBase]: For 11345/11483 co-relation queries the response was YES. [2024-11-09 14:53:45,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18212 conditions, 6447 events. 3062/6447 cut-off events. For 11345/11483 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 42773 event pairs, 581 based on Foata normal form. 0/6446 useless extension candidates. Maximal degree in co-relation 15404. Up to 2690 conditions per place. [2024-11-09 14:53:45,413 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 143 selfloop transitions, 6 changer transitions 0/172 dead transitions. [2024-11-09 14:53:45,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 172 transitions, 1615 flow [2024-11-09 14:53:45,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 14:53:45,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 14:53:45,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-11-09 14:53:45,415 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-09 14:53:45,415 INFO L175 Difference]: Start difference. First operand has 91 places, 90 transitions, 653 flow. Second operand 4 states and 116 transitions. [2024-11-09 14:53:45,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 172 transitions, 1615 flow [2024-11-09 14:53:45,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 172 transitions, 1605 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 14:53:45,437 INFO L231 Difference]: Finished difference. Result has 92 places, 90 transitions, 665 flow [2024-11-09 14:53:45,437 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=665, PETRI_PLACES=92, PETRI_TRANSITIONS=90} [2024-11-09 14:53:45,438 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2024-11-09 14:53:45,438 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 90 transitions, 665 flow [2024-11-09 14:53:45,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:45,438 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:45,438 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:45,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 14:53:45,438 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:53:45,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:45,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1695998278, now seen corresponding path program 1 times [2024-11-09 14:53:45,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:45,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827048075] [2024-11-09 14:53:45,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:45,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:45,583 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:45,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:45,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827048075] [2024-11-09 14:53:45,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827048075] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 14:53:45,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63312952] [2024-11-09 14:53:45,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:45,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:53:45,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:53:45,586 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 14:53:45,587 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 14:53:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:45,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 14:53:45,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 14:53:45,791 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:45,791 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 14:53:45,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63312952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:45,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 14:53:45,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-09 14:53:45,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429482665] [2024-11-09 14:53:45,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:45,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 14:53:45,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:45,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 14:53:45,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-09 14:53:45,801 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-09 14:53:45,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 90 transitions, 665 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:45,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:45,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-09 14:53:45,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:46,455 INFO L124 PetriNetUnfolderBase]: 3167/6166 cut-off events. [2024-11-09 14:53:46,455 INFO L125 PetriNetUnfolderBase]: For 14505/14517 co-relation queries the response was YES. [2024-11-09 14:53:46,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19479 conditions, 6166 events. 3167/6166 cut-off events. For 14505/14517 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 38651 event pairs, 544 based on Foata normal form. 178/6161 useless extension candidates. Maximal degree in co-relation 18617. Up to 3741 conditions per place. [2024-11-09 14:53:46,497 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 96 selfloop transitions, 5 changer transitions 0/123 dead transitions. [2024-11-09 14:53:46,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 123 transitions, 1087 flow [2024-11-09 14:53:46,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 14:53:46,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 14:53:46,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2024-11-09 14:53:46,502 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-09 14:53:46,502 INFO L175 Difference]: Start difference. First operand has 92 places, 90 transitions, 665 flow. Second operand 4 states and 112 transitions. [2024-11-09 14:53:46,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 123 transitions, 1087 flow [2024-11-09 14:53:46,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 123 transitions, 1065 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 14:53:46,527 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 663 flow [2024-11-09 14:53:46,527 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=663, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2024-11-09 14:53:46,528 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2024-11-09 14:53:46,528 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 663 flow [2024-11-09 14:53:46,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:46,529 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:46,529 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-09 14:53:46,549 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 14:53:46,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:53:46,731 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:53:46,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:46,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1036340337, now seen corresponding path program 1 times [2024-11-09 14:53:46,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:46,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143296159] [2024-11-09 14:53:46,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:46,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:46,828 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 14:53:46,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:46,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143296159] [2024-11-09 14:53:46,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143296159] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:46,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:46,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 14:53:46,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994045747] [2024-11-09 14:53:46,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:46,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 14:53:46,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:46,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 14:53:46,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 14:53:46,835 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-09 14:53:46,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 663 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:46,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:46,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-09 14:53:46,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:47,430 INFO L124 PetriNetUnfolderBase]: 2926/5852 cut-off events. [2024-11-09 14:53:47,430 INFO L125 PetriNetUnfolderBase]: For 12816/12841 co-relation queries the response was YES. [2024-11-09 14:53:47,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18203 conditions, 5852 events. 2926/5852 cut-off events. For 12816/12841 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 36722 event pairs, 615 based on Foata normal form. 178/6027 useless extension candidates. Maximal degree in co-relation 15480. Up to 2981 conditions per place. [2024-11-09 14:53:47,465 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 107 selfloop transitions, 6 changer transitions 0/135 dead transitions. [2024-11-09 14:53:47,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 135 transitions, 1215 flow [2024-11-09 14:53:47,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 14:53:47,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 14:53:47,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-11-09 14:53:47,466 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-09 14:53:47,467 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 663 flow. Second operand 4 states and 116 transitions. [2024-11-09 14:53:47,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 135 transitions, 1215 flow [2024-11-09 14:53:47,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 135 transitions, 1205 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 14:53:47,489 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 669 flow [2024-11-09 14:53:47,489 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=669, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2024-11-09 14:53:47,490 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2024-11-09 14:53:47,490 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 669 flow [2024-11-09 14:53:47,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 14:53:47,491 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:47,491 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:47,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 14:53:47,491 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:53:47,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:47,492 INFO L85 PathProgramCache]: Analyzing trace with hash 602282097, now seen corresponding path program 1 times [2024-11-09 14:53:47,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:47,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049714418] [2024-11-09 14:53:47,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:47,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:47,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:47,674 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 14:53:47,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:47,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049714418] [2024-11-09 14:53:47,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049714418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:47,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 14:53:47,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 14:53:47,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671662696] [2024-11-09 14:53:47,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:47,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 14:53:47,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:47,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 14:53:47,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 14:53:47,686 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-09 14:53:47,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 669 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 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 14:53:47,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:47,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-09 14:53:47,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:48,124 INFO L124 PetriNetUnfolderBase]: 2862/5764 cut-off events. [2024-11-09 14:53:48,125 INFO L125 PetriNetUnfolderBase]: For 14686/14686 co-relation queries the response was YES. [2024-11-09 14:53:48,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18439 conditions, 5764 events. 2862/5764 cut-off events. For 14686/14686 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 36287 event pairs, 455 based on Foata normal form. 104/5863 useless extension candidates. Maximal degree in co-relation 15447. Up to 3054 conditions per place. [2024-11-09 14:53:48,152 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 85 selfloop transitions, 35 changer transitions 0/129 dead transitions. [2024-11-09 14:53:48,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 129 transitions, 1104 flow [2024-11-09 14:53:48,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 14:53:48,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 14:53:48,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-11-09 14:53:48,156 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-11-09 14:53:48,156 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 669 flow. Second operand 7 states and 162 transitions. [2024-11-09 14:53:48,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 129 transitions, 1104 flow [2024-11-09 14:53:48,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 129 transitions, 1080 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-09 14:53:48,178 INFO L231 Difference]: Finished difference. Result has 93 places, 85 transitions, 752 flow [2024-11-09 14:53:48,178 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=752, PETRI_PLACES=93, PETRI_TRANSITIONS=85} [2024-11-09 14:53:48,179 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 47 predicate places. [2024-11-09 14:53:48,179 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 85 transitions, 752 flow [2024-11-09 14:53:48,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 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 14:53:48,179 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:48,180 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:48,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 14:53:48,180 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:53:48,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:48,181 INFO L85 PathProgramCache]: Analyzing trace with hash 2052306575, now seen corresponding path program 1 times [2024-11-09 14:53:48,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:48,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429784663] [2024-11-09 14:53:48,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:48,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:48,327 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 14:53:48,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:48,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429784663] [2024-11-09 14:53:48,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429784663] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 14:53:48,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973880493] [2024-11-09 14:53:48,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:48,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:53:48,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:53:48,329 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 14:53:48,330 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 14:53:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:48,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 1031 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 14:53:48,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 14:53:48,511 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:48,511 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 14:53:48,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973880493] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 14:53:48,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 14:53:48,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2024-11-09 14:53:48,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848294463] [2024-11-09 14:53:48,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 14:53:48,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 14:53:48,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:48,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 14:53:48,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-09 14:53:48,521 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-09 14:53:48,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 85 transitions, 752 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 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 14:53:48,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:48,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-09 14:53:48,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:48,975 INFO L124 PetriNetUnfolderBase]: 2819/5729 cut-off events. [2024-11-09 14:53:48,975 INFO L125 PetriNetUnfolderBase]: For 17968/17968 co-relation queries the response was YES. [2024-11-09 14:53:48,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18756 conditions, 5729 events. 2819/5729 cut-off events. For 17968/17968 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 36384 event pairs, 651 based on Foata normal form. 114/5838 useless extension candidates. Maximal degree in co-relation 16035. Up to 2849 conditions per place. [2024-11-09 14:53:49,002 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 87 selfloop transitions, 28 changer transitions 8/132 dead transitions. [2024-11-09 14:53:49,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 132 transitions, 1240 flow [2024-11-09 14:53:49,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 14:53:49,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 14:53:49,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-11-09 14:53:49,003 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-11-09 14:53:49,003 INFO L175 Difference]: Start difference. First operand has 93 places, 85 transitions, 752 flow. Second operand 7 states and 162 transitions. [2024-11-09 14:53:49,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 132 transitions, 1240 flow [2024-11-09 14:53:49,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 132 transitions, 1221 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-09 14:53:49,025 INFO L231 Difference]: Finished difference. Result has 98 places, 87 transitions, 874 flow [2024-11-09 14:53:49,025 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=874, PETRI_PLACES=98, PETRI_TRANSITIONS=87} [2024-11-09 14:53:49,025 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 52 predicate places. [2024-11-09 14:53:49,025 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 87 transitions, 874 flow [2024-11-09 14:53:49,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 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 14:53:49,026 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:49,026 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:49,044 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 14:53:49,226 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,SelfDestructingSolverStorable13 [2024-11-09 14:53:49,227 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:53:49,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:49,227 INFO L85 PathProgramCache]: Analyzing trace with hash -115329390, now seen corresponding path program 2 times [2024-11-09 14:53:49,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:49,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364855419] [2024-11-09 14:53:49,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:49,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:49,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:49,428 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 14:53:49,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:49,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364855419] [2024-11-09 14:53:49,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364855419] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 14:53:49,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826914966] [2024-11-09 14:53:49,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 14:53:49,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:53:49,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:53:49,430 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 14:53:49,431 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 14:53:49,585 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 14:53:49,585 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 14:53:49,588 INFO L255 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 14:53:49,590 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 14:53:49,633 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 14:53:49,633 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 14:53:49,694 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 14:53:49,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826914966] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 14:53:49,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 14:53:49,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2024-11-09 14:53:49,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398978488] [2024-11-09 14:53:49,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 14:53:49,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 14:53:49,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:49,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 14:53:49,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-09 14:53:49,721 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-09 14:53:49,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 87 transitions, 874 flow. Second operand has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 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 14:53:49,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:49,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-09 14:53:49,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:50,595 INFO L124 PetriNetUnfolderBase]: 3024/6198 cut-off events. [2024-11-09 14:53:50,595 INFO L125 PetriNetUnfolderBase]: For 24906/24906 co-relation queries the response was YES. [2024-11-09 14:53:50,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20888 conditions, 6198 events. 3024/6198 cut-off events. For 24906/24906 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 39306 event pairs, 483 based on Foata normal form. 68/6261 useless extension candidates. Maximal degree in co-relation 18502. Up to 1421 conditions per place. [2024-11-09 14:53:50,634 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 185 selfloop transitions, 52 changer transitions 0/246 dead transitions. [2024-11-09 14:53:50,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 246 transitions, 2267 flow [2024-11-09 14:53:50,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 14:53:50,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 14:53:50,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 359 transitions. [2024-11-09 14:53:50,637 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4986111111111111 [2024-11-09 14:53:50,637 INFO L175 Difference]: Start difference. First operand has 98 places, 87 transitions, 874 flow. Second operand 15 states and 359 transitions. [2024-11-09 14:53:50,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 246 transitions, 2267 flow [2024-11-09 14:53:50,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 246 transitions, 2250 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-11-09 14:53:50,663 INFO L231 Difference]: Finished difference. Result has 115 places, 108 transitions, 1344 flow [2024-11-09 14:53:50,663 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1344, PETRI_PLACES=115, PETRI_TRANSITIONS=108} [2024-11-09 14:53:50,664 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 69 predicate places. [2024-11-09 14:53:50,664 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 108 transitions, 1344 flow [2024-11-09 14:53:50,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 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 14:53:50,664 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:50,664 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2024-11-09 14:53:50,678 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 14:53:50,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 14:53:50,865 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:53:50,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:50,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1098848616, now seen corresponding path program 2 times [2024-11-09 14:53:50,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:50,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524113651] [2024-11-09 14:53:50,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:50,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:51,153 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:51,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:51,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524113651] [2024-11-09 14:53:51,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524113651] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 14:53:51,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62997172] [2024-11-09 14:53:51,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 14:53:51,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:53:51,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:53:51,155 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 14:53:51,156 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 14:53:51,337 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 14:53:51,337 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 14:53:51,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 1138 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 14:53:51,342 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 14:53:51,405 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:51,405 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 14:53:51,535 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 14:53:51,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62997172] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 14:53:51,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 14:53:51,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-09 14:53:51,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919252854] [2024-11-09 14:53:51,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 14:53:51,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 14:53:51,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:51,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 14:53:51,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-09 14:53:51,556 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-11-09 14:53:51,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 108 transitions, 1344 flow. Second operand has 24 states, 24 states have (on average 18.541666666666668) internal successors, (445), 24 states have internal predecessors, (445), 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 14:53:51,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:51,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-11-09 14:53:51,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:53,316 INFO L124 PetriNetUnfolderBase]: 5288/10870 cut-off events. [2024-11-09 14:53:53,316 INFO L125 PetriNetUnfolderBase]: For 56184/56184 co-relation queries the response was YES. [2024-11-09 14:53:53,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37873 conditions, 10870 events. 5288/10870 cut-off events. For 56184/56184 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 67704 event pairs, 1005 based on Foata normal form. 234/11099 useless extension candidates. Maximal degree in co-relation 30434. Up to 2603 conditions per place. [2024-11-09 14:53:53,397 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 357 selfloop transitions, 76 changer transitions 0/442 dead transitions. [2024-11-09 14:53:53,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 442 transitions, 4291 flow [2024-11-09 14:53:53,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 14:53:53,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-09 14:53:53,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 673 transitions. [2024-11-09 14:53:53,400 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5842013888888888 [2024-11-09 14:53:53,400 INFO L175 Difference]: Start difference. First operand has 115 places, 108 transitions, 1344 flow. Second operand 24 states and 673 transitions. [2024-11-09 14:53:53,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 442 transitions, 4291 flow [2024-11-09 14:53:53,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 442 transitions, 4267 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-11-09 14:53:53,461 INFO L231 Difference]: Finished difference. Result has 142 places, 148 transitions, 2175 flow [2024-11-09 14:53:53,461 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2175, PETRI_PLACES=142, PETRI_TRANSITIONS=148} [2024-11-09 14:53:53,462 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 96 predicate places. [2024-11-09 14:53:53,462 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 148 transitions, 2175 flow [2024-11-09 14:53:53,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 18.541666666666668) internal successors, (445), 24 states have internal predecessors, (445), 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 14:53:53,462 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:53,463 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:53,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 14:53:53,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:53:53,663 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:53:53,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:53,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1227207082, now seen corresponding path program 3 times [2024-11-09 14:53:53,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:53,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212237242] [2024-11-09 14:53:53,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:53,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:53,997 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 14:53:53,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:53,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212237242] [2024-11-09 14:53:53,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212237242] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 14:53:53,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171179074] [2024-11-09 14:53:53,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 14:53:53,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:53:53,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:53:53,999 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 14:53:54,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 14:53:54,220 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 14:53:54,221 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 14:53:54,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 1205 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 14:53:54,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 14:53:54,300 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 14:53:54,300 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 14:53:54,414 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 14:53:54,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171179074] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 14:53:54,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 14:53:54,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-09 14:53:54,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252900113] [2024-11-09 14:53:54,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 14:53:54,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 14:53:54,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:54,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 14:53:54,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2024-11-09 14:53:54,447 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-09 14:53:54,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 148 transitions, 2175 flow. Second operand has 22 states, 22 states have (on average 17.09090909090909) internal successors, (376), 22 states have internal predecessors, (376), 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 14:53:54,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:54,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-09 14:53:54,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:53:56,203 INFO L124 PetriNetUnfolderBase]: 7243/14777 cut-off events. [2024-11-09 14:53:56,203 INFO L125 PetriNetUnfolderBase]: For 91360/91360 co-relation queries the response was YES. [2024-11-09 14:53:56,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53290 conditions, 14777 events. 7243/14777 cut-off events. For 91360/91360 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 98206 event pairs, 767 based on Foata normal form. 108/14880 useless extension candidates. Maximal degree in co-relation 50420. Up to 2506 conditions per place. [2024-11-09 14:53:56,313 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 307 selfloop transitions, 141 changer transitions 0/457 dead transitions. [2024-11-09 14:53:56,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 457 transitions, 5164 flow [2024-11-09 14:53:56,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 14:53:56,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-09 14:53:56,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 621 transitions. [2024-11-09 14:53:56,315 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49759615384615385 [2024-11-09 14:53:56,315 INFO L175 Difference]: Start difference. First operand has 142 places, 148 transitions, 2175 flow. Second operand 26 states and 621 transitions. [2024-11-09 14:53:56,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 457 transitions, 5164 flow [2024-11-09 14:53:56,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 457 transitions, 5044 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-11-09 14:53:56,434 INFO L231 Difference]: Finished difference. Result has 170 places, 204 transitions, 3437 flow [2024-11-09 14:53:56,434 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2050, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3437, PETRI_PLACES=170, PETRI_TRANSITIONS=204} [2024-11-09 14:53:56,434 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 124 predicate places. [2024-11-09 14:53:56,434 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 204 transitions, 3437 flow [2024-11-09 14:53:56,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 17.09090909090909) internal successors, (376), 22 states have internal predecessors, (376), 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 14:53:56,435 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:53:56,435 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:53:56,448 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 14:53:56,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 14:53:56,636 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:53:56,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:53:56,636 INFO L85 PathProgramCache]: Analyzing trace with hash -691437826, now seen corresponding path program 4 times [2024-11-09 14:53:56,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:53:56,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951254972] [2024-11-09 14:53:56,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:53:56,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:53:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:53:56,976 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 14:53:56,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:53:56,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951254972] [2024-11-09 14:53:56,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951254972] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 14:53:56,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227599601] [2024-11-09 14:53:56,977 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 14:53:56,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:53:56,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:53:56,978 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 14:53:56,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 14:53:57,151 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 14:53:57,151 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 14:53:57,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 1321 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 14:53:57,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 14:53:57,225 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 14:53:57,225 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 14:53:57,396 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 14:53:57,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227599601] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 14:53:57,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 14:53:57,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 28 [2024-11-09 14:53:57,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006748175] [2024-11-09 14:53:57,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 14:53:57,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-09 14:53:57,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:53:57,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-09 14:53:57,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=656, Unknown=0, NotChecked=0, Total=870 [2024-11-09 14:53:57,427 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-09 14:53:57,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 204 transitions, 3437 flow. Second operand has 30 states, 30 states have (on average 17.066666666666666) internal successors, (512), 30 states have internal predecessors, (512), 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 14:53:57,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:53:57,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-09 14:53:57,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:54:00,697 INFO L124 PetriNetUnfolderBase]: 10036/20424 cut-off events. [2024-11-09 14:54:00,697 INFO L125 PetriNetUnfolderBase]: For 158862/158862 co-relation queries the response was YES. [2024-11-09 14:54:00,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76238 conditions, 20424 events. 10036/20424 cut-off events. For 158862/158862 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 141891 event pairs, 971 based on Foata normal form. 218/20637 useless extension candidates. Maximal degree in co-relation 74838. Up to 3481 conditions per place. [2024-11-09 14:54:00,935 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 420 selfloop transitions, 222 changer transitions 0/651 dead transitions. [2024-11-09 14:54:00,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 651 transitions, 7826 flow [2024-11-09 14:54:00,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-09 14:54:00,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-09 14:54:00,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 882 transitions. [2024-11-09 14:54:00,938 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4966216216216216 [2024-11-09 14:54:00,938 INFO L175 Difference]: Start difference. First operand has 170 places, 204 transitions, 3437 flow. Second operand 37 states and 882 transitions. [2024-11-09 14:54:00,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 651 transitions, 7826 flow [2024-11-09 14:54:01,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 651 transitions, 7516 flow, removed 84 selfloop flow, removed 7 redundant places. [2024-11-09 14:54:01,190 INFO L231 Difference]: Finished difference. Result has 208 places, 279 transitions, 5132 flow [2024-11-09 14:54:01,191 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3129, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=5132, PETRI_PLACES=208, PETRI_TRANSITIONS=279} [2024-11-09 14:54:01,191 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 162 predicate places. [2024-11-09 14:54:01,191 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 279 transitions, 5132 flow [2024-11-09 14:54:01,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 17.066666666666666) internal successors, (512), 30 states have internal predecessors, (512), 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 14:54:01,191 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:54:01,192 INFO L204 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:54:01,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 14:54:01,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 14:54:01,395 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:54:01,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:54:01,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1863887620, now seen corresponding path program 5 times [2024-11-09 14:54:01,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:54:01,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461942197] [2024-11-09 14:54:01,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:54:01,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:54:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:54:02,048 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 14:54:02,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:54:02,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461942197] [2024-11-09 14:54:02,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461942197] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 14:54:02,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172924483] [2024-11-09 14:54:02,049 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 14:54:02,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:54:02,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:54:02,051 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 14:54:02,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 14:54:02,331 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-09 14:54:02,331 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 14:54:02,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 1437 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 14:54:02,340 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 14:54:02,450 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 14:54:02,450 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 14:54:02,728 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 14:54:02,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172924483] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 14:54:02,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 14:54:02,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 36 [2024-11-09 14:54:02,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371574941] [2024-11-09 14:54:02,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 14:54:02,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-09 14:54:02,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:54:02,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-09 14:54:02,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=346, Invalid=1060, Unknown=0, NotChecked=0, Total=1406 [2024-11-09 14:54:02,772 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-09 14:54:02,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 279 transitions, 5132 flow. Second operand has 38 states, 38 states have (on average 17.05263157894737) internal successors, (648), 38 states have internal predecessors, (648), 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 14:54:02,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:54:02,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-09 14:54:02,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:54:08,057 INFO L124 PetriNetUnfolderBase]: 14157/28777 cut-off events. [2024-11-09 14:54:08,057 INFO L125 PetriNetUnfolderBase]: For 260212/260212 co-relation queries the response was YES. [2024-11-09 14:54:08,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110141 conditions, 28777 events. 14157/28777 cut-off events. For 260212/260212 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 205221 event pairs, 1285 based on Foata normal form. 316/29088 useless extension candidates. Maximal degree in co-relation 108358. Up to 4918 conditions per place. [2024-11-09 14:54:08,280 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 542 selfloop transitions, 323 changer transitions 0/874 dead transitions. [2024-11-09 14:54:08,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 874 transitions, 11268 flow [2024-11-09 14:54:08,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-09 14:54:08,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-11-09 14:54:08,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 1143 transitions. [2024-11-09 14:54:08,282 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49609375 [2024-11-09 14:54:08,282 INFO L175 Difference]: Start difference. First operand has 208 places, 279 transitions, 5132 flow. Second operand 48 states and 1143 transitions. [2024-11-09 14:54:08,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 874 transitions, 11268 flow [2024-11-09 14:54:08,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 874 transitions, 10711 flow, removed 265 selfloop flow, removed 6 redundant places. [2024-11-09 14:54:08,847 INFO L231 Difference]: Finished difference. Result has 261 places, 385 transitions, 7620 flow [2024-11-09 14:54:08,847 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4750, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=7620, PETRI_PLACES=261, PETRI_TRANSITIONS=385} [2024-11-09 14:54:08,847 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 215 predicate places. [2024-11-09 14:54:08,847 INFO L471 AbstractCegarLoop]: Abstraction has has 261 places, 385 transitions, 7620 flow [2024-11-09 14:54:08,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 17.05263157894737) internal successors, (648), 38 states have internal predecessors, (648), 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 14:54:08,848 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:54:08,848 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:54:08,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 14:54:09,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:54:09,048 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:54:09,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:54:09,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1363732264, now seen corresponding path program 1 times [2024-11-09 14:54:09,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:54:09,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830105313] [2024-11-09 14:54:09,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:54:09,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:54:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:54:09,502 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-09 14:54:09,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:54:09,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830105313] [2024-11-09 14:54:09,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830105313] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 14:54:09,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920991658] [2024-11-09 14:54:09,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:54:09,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:54:09,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:54:09,505 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 14:54:09,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 14:54:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:54:09,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 1423 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 14:54:09,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 14:54:09,852 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 197 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-09 14:54:09,852 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 14:54:10,018 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 197 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-09 14:54:10,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920991658] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 14:54:10,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 14:54:10,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 24 [2024-11-09 14:54:10,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896217163] [2024-11-09 14:54:10,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 14:54:10,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 14:54:10,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:54:10,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 14:54:10,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2024-11-09 14:54:10,053 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-09 14:54:10,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 385 transitions, 7620 flow. Second operand has 26 states, 26 states have (on average 17.692307692307693) internal successors, (460), 26 states have internal predecessors, (460), 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 14:54:10,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:54:10,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-09 14:54:10,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 14:54:19,821 INFO L124 PetriNetUnfolderBase]: 24095/49397 cut-off events. [2024-11-09 14:54:19,821 INFO L125 PetriNetUnfolderBase]: For 462110/462110 co-relation queries the response was YES. [2024-11-09 14:54:20,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192772 conditions, 49397 events. 24095/49397 cut-off events. For 462110/462110 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 409170 event pairs, 3127 based on Foata normal form. 324/49716 useless extension candidates. Maximal degree in co-relation 185504. Up to 10645 conditions per place. [2024-11-09 14:54:20,391 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 441 selfloop transitions, 604 changer transitions 0/1054 dead transitions. [2024-11-09 14:54:20,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 1054 transitions, 19435 flow [2024-11-09 14:54:20,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-09 14:54:20,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-09 14:54:20,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 651 transitions. [2024-11-09 14:54:20,393 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5023148148148148 [2024-11-09 14:54:20,393 INFO L175 Difference]: Start difference. First operand has 261 places, 385 transitions, 7620 flow. Second operand 27 states and 651 transitions. [2024-11-09 14:54:20,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 1054 transitions, 19435 flow [2024-11-09 14:54:22,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 1054 transitions, 18673 flow, removed 323 selfloop flow, removed 10 redundant places. [2024-11-09 14:54:22,104 INFO L231 Difference]: Finished difference. Result has 290 places, 784 transitions, 17288 flow [2024-11-09 14:54:22,105 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7292, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=17288, PETRI_PLACES=290, PETRI_TRANSITIONS=784} [2024-11-09 14:54:22,105 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 244 predicate places. [2024-11-09 14:54:22,105 INFO L471 AbstractCegarLoop]: Abstraction has has 290 places, 784 transitions, 17288 flow [2024-11-09 14:54:22,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 17.692307692307693) internal successors, (460), 26 states have internal predecessors, (460), 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 14:54:22,105 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 14:54:22,105 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 14:54:22,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-09 14:54:22,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:54:22,306 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-09 14:54:22,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 14:54:22,306 INFO L85 PathProgramCache]: Analyzing trace with hash -221817802, now seen corresponding path program 6 times [2024-11-09 14:54:22,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 14:54:22,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119866268] [2024-11-09 14:54:22,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 14:54:22,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 14:54:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 14:54:23,057 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 544 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 14:54:23,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 14:54:23,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119866268] [2024-11-09 14:54:23,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119866268] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 14:54:23,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363978435] [2024-11-09 14:54:23,058 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 14:54:23,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 14:54:23,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 14:54:23,060 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 14:54:23,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 14:54:23,979 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-09 14:54:23,979 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 14:54:23,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 1553 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 14:54:23,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 14:54:24,116 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 544 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 14:54:24,116 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 14:54:24,499 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 544 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 14:54:24,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363978435] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 14:54:24,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 14:54:24,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 44 [2024-11-09 14:54:24,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428716120] [2024-11-09 14:54:24,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 14:54:24,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-09 14:54:24,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 14:54:24,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-09 14:54:24,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=510, Invalid=1560, Unknown=0, NotChecked=0, Total=2070 [2024-11-09 14:54:24,564 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-09 14:54:24,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 784 transitions, 17288 flow. Second operand has 46 states, 46 states have (on average 17.043478260869566) internal successors, (784), 46 states have internal predecessors, (784), 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 14:54:24,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 14:54:24,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-09 14:54:24,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand