./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3289d67d 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/goblint-regression/28-race_reach_01-simple_racing.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 eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:46:49,326 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:46:49,413 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:46:49,417 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:46:49,417 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:46:49,436 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:46:49,436 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:46:49,437 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:46:49,437 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:46:49,438 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:46:49,438 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:46:49,438 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:46:49,439 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:46:49,439 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:46:49,440 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:46:49,440 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:46:49,440 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:46:49,441 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:46:49,441 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:46:49,441 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:46:49,441 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:46:49,442 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:46:49,442 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:46:49,443 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:46:49,443 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:46:49,443 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:46:49,443 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:46:49,444 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:46:49,444 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:46:49,444 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:46:49,444 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:46:49,445 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:46:49,445 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:46:49,445 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:46:49,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:46:49,446 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:46:49,446 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:46:49,446 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:46:49,447 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:46:49,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:46:49,451 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:46:49,451 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:46:49,451 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:46:49,452 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:46:49,452 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 [2024-11-17 07:46:49,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:46:49,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:46:49,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:46:49,731 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:46:49,731 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:46:49,732 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i [2024-11-17 07:46:51,171 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:46:51,427 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:46:51,428 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i [2024-11-17 07:46:51,448 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3c69dfd5/26e9579bc8fc49078b45b47d79953706/FLAG47395ccfa [2024-11-17 07:46:51,460 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3c69dfd5/26e9579bc8fc49078b45b47d79953706 [2024-11-17 07:46:51,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:46:51,464 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:46:51,464 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:46:51,465 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:46:51,470 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:46:51,471 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:46:51" (1/1) ... [2024-11-17 07:46:51,471 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18d59a57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:46:51, skipping insertion in model container [2024-11-17 07:46:51,472 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:46:51" (1/1) ... [2024-11-17 07:46:51,509 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:46:51,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:46:51,898 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:46:51,953 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:46:52,002 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:46:52,003 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:46:52 WrapperNode [2024-11-17 07:46:52,003 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:46:52,007 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:46:52,007 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:46:52,007 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:46:52,013 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:46:52" (1/1) ... [2024-11-17 07:46:52,030 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:46:52" (1/1) ... [2024-11-17 07:46:52,054 INFO L138 Inliner]: procedures = 171, calls = 42, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 86 [2024-11-17 07:46:52,055 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:46:52,056 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:46:52,056 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:46:52,056 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:46:52,065 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:46:52" (1/1) ... [2024-11-17 07:46:52,065 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:46:52" (1/1) ... [2024-11-17 07:46:52,068 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:46:52" (1/1) ... [2024-11-17 07:46:52,086 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 5, 5, 5, 2]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 0, 1]. [2024-11-17 07:46:52,086 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:46:52" (1/1) ... [2024-11-17 07:46:52,086 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:46:52" (1/1) ... [2024-11-17 07:46:52,100 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:46:52" (1/1) ... [2024-11-17 07:46:52,100 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:46:52" (1/1) ... [2024-11-17 07:46:52,102 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:46:52" (1/1) ... [2024-11-17 07:46:52,103 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:46:52" (1/1) ... [2024-11-17 07:46:52,110 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:46:52,111 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:46:52,111 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:46:52,112 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:46:52,112 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:46:52" (1/1) ... [2024-11-17 07:46:52,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:46:52,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:46:52,154 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) [2024-11-17 07:46:52,157 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 [2024-11-17 07:46:52,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 07:46:52,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 07:46:52,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-17 07:46:52,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-17 07:46:52,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-17 07:46:52,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 07:46:52,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 07:46:52,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-17 07:46:52,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-17 07:46:52,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-17 07:46:52,218 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-17 07:46:52,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:46:52,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-17 07:46:52,218 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-17 07:46:52,218 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-17 07:46:52,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 07:46:52,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:46:52,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 07:46:52,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 07:46:52,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-17 07:46:52,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-17 07:46:52,221 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-17 07:46:52,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:46:52,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:46:52,223 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 07:46:52,399 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:46:52,402 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:46:52,598 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L707: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2024-11-17 07:46:52,599 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L707-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2024-11-17 07:46:52,650 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:46:52,651 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:46:52,788 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:46:52,788 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:46:52,789 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:46:52 BoogieIcfgContainer [2024-11-17 07:46:52,789 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:46:52,791 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:46:52,791 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:46:52,794 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:46:52,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:46:51" (1/3) ... [2024-11-17 07:46:52,795 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f4a5804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:46:52, skipping insertion in model container [2024-11-17 07:46:52,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:46:52" (2/3) ... [2024-11-17 07:46:52,796 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f4a5804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:46:52, skipping insertion in model container [2024-11-17 07:46:52,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:46:52" (3/3) ... [2024-11-17 07:46:52,797 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_01-simple_racing.i [2024-11-17 07:46:52,811 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:46:52,811 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-17 07:46:52,811 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:46:52,857 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-17 07:46:52,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 69 transitions, 145 flow [2024-11-17 07:46:52,958 INFO L124 PetriNetUnfolderBase]: 15/91 cut-off events. [2024-11-17 07:46:52,961 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 07:46:52,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 91 events. 15/91 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 276 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 60. Up to 4 conditions per place. [2024-11-17 07:46:52,967 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 69 transitions, 145 flow [2024-11-17 07:46:52,970 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 68 transitions, 143 flow [2024-11-17 07:46:52,987 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:46:52,996 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;@701d844f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:46:52,996 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-17 07:46:53,003 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:46:53,007 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events. [2024-11-17 07:46:53,007 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:46:53,008 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:46:53,008 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 07:46:53,011 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-17 07:46:53,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:46:53,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1183435459, now seen corresponding path program 1 times [2024-11-17 07:46:53,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:46:53,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157963002] [2024-11-17 07:46:53,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:46:53,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:46:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:46:53,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:46:53,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:46:53,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157963002] [2024-11-17 07:46:53,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157963002] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:46:53,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:46:53,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:46:53,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222836289] [2024-11-17 07:46:53,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:46:53,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:46:53,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:46:53,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:46:53,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:46:53,506 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 69 [2024-11-17 07:46:53,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 68 transitions, 143 flow. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 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) [2024-11-17 07:46:53,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:46:53,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 69 [2024-11-17 07:46:53,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:46:53,742 INFO L124 PetriNetUnfolderBase]: 143/445 cut-off events. [2024-11-17 07:46:53,742 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 07:46:53,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 765 conditions, 445 events. 143/445 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2263 event pairs, 0 based on Foata normal form. 145/573 useless extension candidates. Maximal degree in co-relation 734. Up to 278 conditions per place. [2024-11-17 07:46:53,749 INFO L140 encePairwiseOnDemand]: 53/69 looper letters, 47 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2024-11-17 07:46:53,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 79 transitions, 265 flow [2024-11-17 07:46:53,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:46:53,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:46:53,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 192 transitions. [2024-11-17 07:46:53,763 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6956521739130435 [2024-11-17 07:46:53,765 INFO L175 Difference]: Start difference. First operand has 61 places, 68 transitions, 143 flow. Second operand 4 states and 192 transitions. [2024-11-17 07:46:53,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 79 transitions, 265 flow [2024-11-17 07:46:53,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 79 transitions, 265 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:46:53,771 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 129 flow [2024-11-17 07:46:53,773 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=129, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2024-11-17 07:46:53,776 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 2 predicate places. [2024-11-17 07:46:53,776 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 129 flow [2024-11-17 07:46:53,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 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) [2024-11-17 07:46:53,776 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:46:53,777 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 07:46:53,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:46:53,777 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-17 07:46:53,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:46:53,778 INFO L85 PathProgramCache]: Analyzing trace with hash 62900169, now seen corresponding path program 1 times [2024-11-17 07:46:53,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:46:53,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996507666] [2024-11-17 07:46:53,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:46:53,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:46:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:46:53,824 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 07:46:53,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:46:53,863 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 07:46:53,865 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 07:46:53,866 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-11-17 07:46:53,869 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-11-17 07:46:53,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-11-17 07:46:53,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-11-17 07:46:53,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-11-17 07:46:53,870 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-11-17 07:46:53,871 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-11-17 07:46:53,871 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-11-17 07:46:53,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-11-17 07:46:53,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-11-17 07:46:53,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-11-17 07:46:53,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-11-17 07:46:53,873 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-11-17 07:46:53,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 07:46:53,874 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-17 07:46:53,876 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 07:46:53,877 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-17 07:46:53,910 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-17 07:46:53,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 104 transitions, 224 flow [2024-11-17 07:46:53,938 INFO L124 PetriNetUnfolderBase]: 28/170 cut-off events. [2024-11-17 07:46:53,939 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-17 07:46:53,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 170 events. 28/170 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 611 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 105. Up to 8 conditions per place. [2024-11-17 07:46:53,940 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 104 transitions, 224 flow [2024-11-17 07:46:53,942 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 104 transitions, 224 flow [2024-11-17 07:46:53,943 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:46:53,944 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;@701d844f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:46:53,944 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-17 07:46:53,950 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:46:53,950 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events. [2024-11-17 07:46:53,951 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:46:53,951 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:46:53,951 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 07:46:53,951 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-17 07:46:53,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:46:53,952 INFO L85 PathProgramCache]: Analyzing trace with hash -34820700, now seen corresponding path program 1 times [2024-11-17 07:46:53,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:46:53,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498992683] [2024-11-17 07:46:53,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:46:53,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:46:53,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:46:54,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:46:54,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:46:54,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498992683] [2024-11-17 07:46:54,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498992683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:46:54,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:46:54,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:46:54,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655318132] [2024-11-17 07:46:54,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:46:54,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:46:54,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:46:54,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:46:54,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:46:54,045 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 104 [2024-11-17 07:46:54,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 104 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 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) [2024-11-17 07:46:54,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:46:54,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 104 [2024-11-17 07:46:54,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:46:55,179 INFO L124 PetriNetUnfolderBase]: 4303/9700 cut-off events. [2024-11-17 07:46:55,180 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2024-11-17 07:46:55,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16609 conditions, 9700 events. 4303/9700 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 85987 event pairs, 2024 based on Foata normal form. 3030/11943 useless extension candidates. Maximal degree in co-relation 1325. Up to 6805 conditions per place. [2024-11-17 07:46:55,250 INFO L140 encePairwiseOnDemand]: 82/104 looper letters, 65 selfloop transitions, 3 changer transitions 0/113 dead transitions. [2024-11-17 07:46:55,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 113 transitions, 378 flow [2024-11-17 07:46:55,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:46:55,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:46:55,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 280 transitions. [2024-11-17 07:46:55,256 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6730769230769231 [2024-11-17 07:46:55,257 INFO L175 Difference]: Start difference. First operand has 91 places, 104 transitions, 224 flow. Second operand 4 states and 280 transitions. [2024-11-17 07:46:55,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 113 transitions, 378 flow [2024-11-17 07:46:55,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 113 transitions, 378 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:46:55,261 INFO L231 Difference]: Finished difference. Result has 96 places, 90 transitions, 216 flow [2024-11-17 07:46:55,262 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=216, PETRI_PLACES=96, PETRI_TRANSITIONS=90} [2024-11-17 07:46:55,262 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 5 predicate places. [2024-11-17 07:46:55,263 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 216 flow [2024-11-17 07:46:55,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 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) [2024-11-17 07:46:55,263 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:46:55,263 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 07:46:55,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 07:46:55,264 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-17 07:46:55,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:46:55,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1361346614, now seen corresponding path program 1 times [2024-11-17 07:46:55,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:46:55,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509774870] [2024-11-17 07:46:55,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:46:55,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:46:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:46:55,454 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:46:55,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:46:55,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509774870] [2024-11-17 07:46:55,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509774870] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:46:55,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035293944] [2024-11-17 07:46:55,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:46:55,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:46:55,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:46:55,458 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) [2024-11-17 07:46:55,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 07:46:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:46:55,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:46:55,560 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:46:55,629 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:46:55,630 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:46:55,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035293944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:46:55,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:46:55,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-17 07:46:55,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873948644] [2024-11-17 07:46:55,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:46:55,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:46:55,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:46:55,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:46:55,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:46:55,648 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 104 [2024-11-17 07:46:55,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 90 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 46.5) internal successors, (279), 6 states have internal predecessors, (279), 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) [2024-11-17 07:46:55,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:46:55,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 104 [2024-11-17 07:46:55,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:46:56,627 INFO L124 PetriNetUnfolderBase]: 4039/8544 cut-off events. [2024-11-17 07:46:56,627 INFO L125 PetriNetUnfolderBase]: For 672/672 co-relation queries the response was YES. [2024-11-17 07:46:56,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15685 conditions, 8544 events. 4039/8544 cut-off events. For 672/672 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 72228 event pairs, 372 based on Foata normal form. 144/8325 useless extension candidates. Maximal degree in co-relation 1303. Up to 4012 conditions per place. [2024-11-17 07:46:56,687 INFO L140 encePairwiseOnDemand]: 99/104 looper letters, 105 selfloop transitions, 6 changer transitions 0/156 dead transitions. [2024-11-17 07:46:56,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 156 transitions, 568 flow [2024-11-17 07:46:56,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:46:56,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:46:56,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 382 transitions. [2024-11-17 07:46:56,690 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6121794871794872 [2024-11-17 07:46:56,690 INFO L175 Difference]: Start difference. First operand has 96 places, 90 transitions, 216 flow. Second operand 6 states and 382 transitions. [2024-11-17 07:46:56,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 156 transitions, 568 flow [2024-11-17 07:46:56,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 156 transitions, 566 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:46:56,696 INFO L231 Difference]: Finished difference. Result has 99 places, 89 transitions, 222 flow [2024-11-17 07:46:56,696 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=222, PETRI_PLACES=99, PETRI_TRANSITIONS=89} [2024-11-17 07:46:56,697 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 8 predicate places. [2024-11-17 07:46:56,698 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 89 transitions, 222 flow [2024-11-17 07:46:56,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 46.5) internal successors, (279), 6 states have internal predecessors, (279), 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) [2024-11-17 07:46:56,698 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:46:56,699 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:46:56,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 07:46:56,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:46:56,903 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-17 07:46:56,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:46:56,904 INFO L85 PathProgramCache]: Analyzing trace with hash -914183535, now seen corresponding path program 1 times [2024-11-17 07:46:56,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:46:56,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862990963] [2024-11-17 07:46:56,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:46:56,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:46:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:46:56,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:46:56,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:46:56,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862990963] [2024-11-17 07:46:56,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862990963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:46:56,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:46:56,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:46:56,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312447819] [2024-11-17 07:46:56,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:46:56,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:46:56,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:46:56,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:46:56,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:46:56,984 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 104 [2024-11-17 07:46:56,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 89 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 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) [2024-11-17 07:46:56,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:46:56,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 104 [2024-11-17 07:46:56,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:46:58,275 INFO L124 PetriNetUnfolderBase]: 5065/11251 cut-off events. [2024-11-17 07:46:58,276 INFO L125 PetriNetUnfolderBase]: For 649/810 co-relation queries the response was YES. [2024-11-17 07:46:58,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19907 conditions, 11251 events. 5065/11251 cut-off events. For 649/810 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 102487 event pairs, 1350 based on Foata normal form. 196/10858 useless extension candidates. Maximal degree in co-relation 16039. Up to 5004 conditions per place. [2024-11-17 07:46:58,333 INFO L140 encePairwiseOnDemand]: 95/104 looper letters, 114 selfloop transitions, 12 changer transitions 0/174 dead transitions. [2024-11-17 07:46:58,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 174 transitions, 686 flow [2024-11-17 07:46:58,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:46:58,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:46:58,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 367 transitions. [2024-11-17 07:46:58,336 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7057692307692308 [2024-11-17 07:46:58,336 INFO L175 Difference]: Start difference. First operand has 99 places, 89 transitions, 222 flow. Second operand 5 states and 367 transitions. [2024-11-17 07:46:58,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 174 transitions, 686 flow [2024-11-17 07:46:58,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 174 transitions, 678 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:46:58,341 INFO L231 Difference]: Finished difference. Result has 104 places, 100 transitions, 310 flow [2024-11-17 07:46:58,341 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=310, PETRI_PLACES=104, PETRI_TRANSITIONS=100} [2024-11-17 07:46:58,342 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 13 predicate places. [2024-11-17 07:46:58,342 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 100 transitions, 310 flow [2024-11-17 07:46:58,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 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) [2024-11-17 07:46:58,342 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:46:58,343 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-17 07:46:58,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 07:46:58,343 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-17 07:46:58,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:46:58,344 INFO L85 PathProgramCache]: Analyzing trace with hash 747928264, now seen corresponding path program 1 times [2024-11-17 07:46:58,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:46:58,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500069565] [2024-11-17 07:46:58,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:46:58,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:46:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:46:58,403 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:46:58,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:46:58,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500069565] [2024-11-17 07:46:58,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500069565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:46:58,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:46:58,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:46:58,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350482898] [2024-11-17 07:46:58,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:46:58,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:46:58,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:46:58,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:46:58,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:46:58,419 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 104 [2024-11-17 07:46:58,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 100 transitions, 310 flow. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 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) [2024-11-17 07:46:58,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:46:58,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 104 [2024-11-17 07:46:58,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:46:59,612 INFO L124 PetriNetUnfolderBase]: 5533/12086 cut-off events. [2024-11-17 07:46:59,612 INFO L125 PetriNetUnfolderBase]: For 4604/4608 co-relation queries the response was YES. [2024-11-17 07:46:59,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24799 conditions, 12086 events. 5533/12086 cut-off events. For 4604/4608 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 108878 event pairs, 1137 based on Foata normal form. 152/11939 useless extension candidates. Maximal degree in co-relation 19400. Up to 7715 conditions per place. [2024-11-17 07:46:59,697 INFO L140 encePairwiseOnDemand]: 99/104 looper letters, 103 selfloop transitions, 6 changer transitions 0/154 dead transitions. [2024-11-17 07:46:59,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 154 transitions, 698 flow [2024-11-17 07:46:59,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:46:59,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:46:59,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 267 transitions. [2024-11-17 07:46:59,699 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6418269230769231 [2024-11-17 07:46:59,700 INFO L175 Difference]: Start difference. First operand has 104 places, 100 transitions, 310 flow. Second operand 4 states and 267 transitions. [2024-11-17 07:46:59,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 154 transitions, 698 flow [2024-11-17 07:46:59,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 154 transitions, 694 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-17 07:46:59,713 INFO L231 Difference]: Finished difference. Result has 106 places, 100 transitions, 322 flow [2024-11-17 07:46:59,714 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=322, PETRI_PLACES=106, PETRI_TRANSITIONS=100} [2024-11-17 07:46:59,714 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 15 predicate places. [2024-11-17 07:46:59,714 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 100 transitions, 322 flow [2024-11-17 07:46:59,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 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) [2024-11-17 07:46:59,715 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:46:59,715 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1] [2024-11-17 07:46:59,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 07:46:59,716 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-17 07:46:59,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:46:59,716 INFO L85 PathProgramCache]: Analyzing trace with hash -759006351, now seen corresponding path program 1 times [2024-11-17 07:46:59,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:46:59,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589897542] [2024-11-17 07:46:59,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:46:59,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:46:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:46:59,739 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 07:46:59,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:46:59,764 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 07:46:59,765 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 07:46:59,765 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-11-17 07:46:59,765 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-11-17 07:46:59,765 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-11-17 07:46:59,766 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-11-17 07:46:59,766 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-11-17 07:46:59,766 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-11-17 07:46:59,766 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-11-17 07:46:59,766 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-11-17 07:46:59,767 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-11-17 07:46:59,767 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-11-17 07:46:59,770 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-11-17 07:46:59,771 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-11-17 07:46:59,771 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-11-17 07:46:59,771 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-11-17 07:46:59,771 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-11-17 07:46:59,772 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-11-17 07:46:59,772 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-11-17 07:46:59,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 07:46:59,772 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-17 07:46:59,773 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 07:46:59,773 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-17 07:46:59,811 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-17 07:46:59,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 139 transitions, 305 flow [2024-11-17 07:46:59,844 INFO L124 PetriNetUnfolderBase]: 46/274 cut-off events. [2024-11-17 07:46:59,845 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-17 07:46:59,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 274 events. 46/274 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1091 event pairs, 1 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 185. Up to 16 conditions per place. [2024-11-17 07:46:59,847 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 139 transitions, 305 flow [2024-11-17 07:46:59,851 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 139 transitions, 305 flow [2024-11-17 07:46:59,852 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:46:59,854 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;@701d844f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:46:59,855 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-17 07:46:59,858 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:46:59,858 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events. [2024-11-17 07:46:59,858 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:46:59,858 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:46:59,858 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 07:46:59,858 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-17 07:46:59,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:46:59,859 INFO L85 PathProgramCache]: Analyzing trace with hash -217655899, now seen corresponding path program 1 times [2024-11-17 07:46:59,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:46:59,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893109931] [2024-11-17 07:46:59,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:46:59,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:46:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:46:59,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:46:59,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:46:59,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893109931] [2024-11-17 07:46:59,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893109931] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:46:59,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:46:59,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:46:59,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906819350] [2024-11-17 07:46:59,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:46:59,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:46:59,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:46:59,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:46:59,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:46:59,928 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 139 [2024-11-17 07:46:59,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 139 transitions, 305 flow. Second operand has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 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) [2024-11-17 07:46:59,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:46:59,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 139 [2024-11-17 07:46:59,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:47:11,079 INFO L124 PetriNetUnfolderBase]: 81352/151063 cut-off events. [2024-11-17 07:47:11,080 INFO L125 PetriNetUnfolderBase]: For 1719/1719 co-relation queries the response was YES. [2024-11-17 07:47:11,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265071 conditions, 151063 events. 81352/151063 cut-off events. For 1719/1719 co-relation queries the response was YES. Maximal size of possible extension queue 3326. Compared 1639730 event pairs, 78580 based on Foata normal form. 51794/191896 useless extension candidates. Maximal degree in co-relation 135928. Up to 112846 conditions per place. [2024-11-17 07:47:12,168 INFO L140 encePairwiseOnDemand]: 111/139 looper letters, 78 selfloop transitions, 3 changer transitions 0/142 dead transitions. [2024-11-17 07:47:12,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 142 transitions, 473 flow [2024-11-17 07:47:12,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:47:12,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:47:12,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 363 transitions. [2024-11-17 07:47:12,170 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6528776978417267 [2024-11-17 07:47:12,170 INFO L175 Difference]: Start difference. First operand has 121 places, 139 transitions, 305 flow. Second operand 4 states and 363 transitions. [2024-11-17 07:47:12,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 142 transitions, 473 flow [2024-11-17 07:47:12,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 142 transitions, 473 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:47:12,175 INFO L231 Difference]: Finished difference. Result has 126 places, 119 transitions, 285 flow [2024-11-17 07:47:12,176 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=285, PETRI_PLACES=126, PETRI_TRANSITIONS=119} [2024-11-17 07:47:12,177 INFO L277 CegarLoopForPetriNet]: 121 programPoint places, 5 predicate places. [2024-11-17 07:47:12,179 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 119 transitions, 285 flow [2024-11-17 07:47:12,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 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) [2024-11-17 07:47:12,179 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:12,179 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 07:47:12,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 07:47:12,179 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-17 07:47:12,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:12,180 INFO L85 PathProgramCache]: Analyzing trace with hash 196610828, now seen corresponding path program 1 times [2024-11-17 07:47:12,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:12,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403582864] [2024-11-17 07:47:12,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:12,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:12,259 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:47:12,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:47:12,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403582864] [2024-11-17 07:47:12,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403582864] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:47:12,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572606816] [2024-11-17 07:47:12,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:12,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:47:12,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:47:12,262 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) [2024-11-17 07:47:12,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 07:47:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:12,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:47:12,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:47:12,389 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:47:12,389 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:47:12,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572606816] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:47:12,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:47:12,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-17 07:47:12,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801404565] [2024-11-17 07:47:12,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:47:12,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:47:12,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:47:12,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:47:12,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:47:12,401 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 139 [2024-11-17 07:47:12,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 119 transitions, 285 flow. Second operand has 6 states, 6 states have (on average 62.5) internal successors, (375), 6 states have internal predecessors, (375), 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) [2024-11-17 07:47:12,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:47:12,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 139 [2024-11-17 07:47:12,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:47:22,508 INFO L124 PetriNetUnfolderBase]: 76336/130702 cut-off events. [2024-11-17 07:47:22,508 INFO L125 PetriNetUnfolderBase]: For 7168/7168 co-relation queries the response was YES. [2024-11-17 07:47:22,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245374 conditions, 130702 events. 76336/130702 cut-off events. For 7168/7168 co-relation queries the response was YES. Maximal size of possible extension queue 2823. Compared 1308914 event pairs, 17756 based on Foata normal form. 1872/127460 useless extension candidates. Maximal degree in co-relation 224745. Up to 66277 conditions per place. [2024-11-17 07:47:23,378 INFO L140 encePairwiseOnDemand]: 134/139 looper letters, 140 selfloop transitions, 6 changer transitions 0/207 dead transitions. [2024-11-17 07:47:23,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 207 transitions, 751 flow [2024-11-17 07:47:23,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:47:23,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:47:23,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 513 transitions. [2024-11-17 07:47:23,381 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6151079136690647 [2024-11-17 07:47:23,381 INFO L175 Difference]: Start difference. First operand has 126 places, 119 transitions, 285 flow. Second operand 6 states and 513 transitions. [2024-11-17 07:47:23,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 207 transitions, 751 flow [2024-11-17 07:47:23,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 207 transitions, 749 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:47:23,409 INFO L231 Difference]: Finished difference. Result has 129 places, 118 transitions, 291 flow [2024-11-17 07:47:23,409 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=291, PETRI_PLACES=129, PETRI_TRANSITIONS=118} [2024-11-17 07:47:23,411 INFO L277 CegarLoopForPetriNet]: 121 programPoint places, 8 predicate places. [2024-11-17 07:47:23,411 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 118 transitions, 291 flow [2024-11-17 07:47:23,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 62.5) internal successors, (375), 6 states have internal predecessors, (375), 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) [2024-11-17 07:47:23,411 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:23,411 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:47:23,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-17 07:47:23,612 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,SelfDestructingSolverStorable8 [2024-11-17 07:47:23,612 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-17 07:47:23,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:23,613 INFO L85 PathProgramCache]: Analyzing trace with hash 103316210, now seen corresponding path program 1 times [2024-11-17 07:47:23,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:23,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457704166] [2024-11-17 07:47:23,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:23,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:23,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:47:23,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:47:23,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457704166] [2024-11-17 07:47:23,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457704166] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:47:23,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:47:23,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:47:23,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438657747] [2024-11-17 07:47:23,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:47:23,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:47:23,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:47:23,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:47:23,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:47:23,676 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 139 [2024-11-17 07:47:23,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 118 transitions, 291 flow. Second operand has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 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) [2024-11-17 07:47:23,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:47:23,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 139 [2024-11-17 07:47:23,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:47:37,756 INFO L124 PetriNetUnfolderBase]: 105235/191213 cut-off events. [2024-11-17 07:47:37,756 INFO L125 PetriNetUnfolderBase]: For 11785/14033 co-relation queries the response was YES. [2024-11-17 07:47:38,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344781 conditions, 191213 events. 105235/191213 cut-off events. For 11785/14033 co-relation queries the response was YES. Maximal size of possible extension queue 4563. Compared 2110842 event pairs, 35648 based on Foata normal form. 2680/184200 useless extension candidates. Maximal degree in co-relation 233957. Up to 93626 conditions per place. [2024-11-17 07:47:39,094 INFO L140 encePairwiseOnDemand]: 128/139 looper letters, 166 selfloop transitions, 16 changer transitions 0/246 dead transitions. [2024-11-17 07:47:39,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 246 transitions, 983 flow [2024-11-17 07:47:39,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:47:39,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:47:39,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 503 transitions. [2024-11-17 07:47:39,096 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7237410071942446 [2024-11-17 07:47:39,096 INFO L175 Difference]: Start difference. First operand has 129 places, 118 transitions, 291 flow. Second operand 5 states and 503 transitions. [2024-11-17 07:47:39,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 246 transitions, 983 flow [2024-11-17 07:47:39,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 246 transitions, 975 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:47:39,105 INFO L231 Difference]: Finished difference. Result has 134 places, 133 transitions, 413 flow [2024-11-17 07:47:39,105 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=413, PETRI_PLACES=134, PETRI_TRANSITIONS=133} [2024-11-17 07:47:39,106 INFO L277 CegarLoopForPetriNet]: 121 programPoint places, 13 predicate places. [2024-11-17 07:47:39,106 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 133 transitions, 413 flow [2024-11-17 07:47:39,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 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) [2024-11-17 07:47:39,106 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:47:39,106 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-17 07:47:39,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 07:47:39,107 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-17 07:47:39,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:47:39,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1799968849, now seen corresponding path program 1 times [2024-11-17 07:47:39,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:47:39,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825446151] [2024-11-17 07:47:39,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:47:39,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:47:39,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:47:39,145 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:47:39,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:47:39,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825446151] [2024-11-17 07:47:39,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825446151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:47:39,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:47:39,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:47:39,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234948660] [2024-11-17 07:47:39,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:47:39,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:47:39,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:47:39,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:47:39,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:47:39,155 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 139 [2024-11-17 07:47:39,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 133 transitions, 413 flow. Second operand has 4 states, 4 states have (on average 63.25) internal successors, (253), 4 states have internal predecessors, (253), 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) [2024-11-17 07:47:39,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:47:39,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 139 [2024-11-17 07:47:39,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand