./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.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_36-indirect_racefree.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 3eff698bae51c39e8a3a4c763800dbda831dabb73a169fa31c8e326faee47cd8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:48:15,444 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:48:15,506 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:48:15,509 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:48:15,510 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:48:15,532 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:48:15,532 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:48:15,533 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:48:15,533 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:48:15,534 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:48:15,534 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:48:15,534 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:48:15,535 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:48:15,536 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:48:15,536 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:48:15,537 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:48:15,537 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:48:15,537 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:48:15,537 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:48:15,540 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:48:15,540 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:48:15,541 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:48:15,541 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:48:15,541 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:48:15,541 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:48:15,541 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:48:15,541 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:48:15,541 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:48:15,542 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:48:15,542 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:48:15,542 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:48:15,542 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:48:15,542 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:48:15,542 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:48:15,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:48:15,543 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:48:15,543 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:48:15,543 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:48:15,543 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:48:15,543 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:48:15,543 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:48:15,544 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:48:15,545 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:48:15,545 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:48:15,545 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3eff698bae51c39e8a3a4c763800dbda831dabb73a169fa31c8e326faee47cd8 [2024-11-17 07:48:15,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:48:15,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:48:15,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:48:15,767 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:48:15,767 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:48:15,768 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.i [2024-11-17 07:48:17,022 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:48:17,234 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:48:17,236 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_36-indirect_racefree.i [2024-11-17 07:48:17,250 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29cb49c41/8ad91fd890de439e973a9213695a55f4/FLAG368c3a3cc [2024-11-17 07:48:17,264 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29cb49c41/8ad91fd890de439e973a9213695a55f4 [2024-11-17 07:48:17,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:48:17,267 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:48:17,270 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:48:17,270 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:48:17,274 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:48:17,275 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:48:17" (1/1) ... [2024-11-17 07:48:17,275 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2abf1d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:17, skipping insertion in model container [2024-11-17 07:48:17,276 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:48:17" (1/1) ... [2024-11-17 07:48:17,313 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:48:17,578 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:48:17,591 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:48:17,652 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:48:17,708 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:48:17,709 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:17 WrapperNode [2024-11-17 07:48:17,709 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:48:17,710 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:48:17,710 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:48:17,710 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:48:17,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:17" (1/1) ... [2024-11-17 07:48:17,730 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:17" (1/1) ... [2024-11-17 07:48:17,749 INFO L138 Inliner]: procedures = 171, calls = 43, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 87 [2024-11-17 07:48:17,749 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:48:17,750 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:48:17,750 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:48:17,750 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:48:17,757 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:17" (1/1) ... [2024-11-17 07:48:17,757 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:17" (1/1) ... [2024-11-17 07:48:17,762 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:17" (1/1) ... [2024-11-17 07:48:17,775 INFO L175 MemorySlicer]: Split 20 memory accesses to 5 slices as follows [2, 5, 6, 5, 2]. 30 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 1, 5, 0]. The 3 writes are split as follows [0, 0, 2, 0, 1]. [2024-11-17 07:48:17,775 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:17" (1/1) ... [2024-11-17 07:48:17,775 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:17" (1/1) ... [2024-11-17 07:48:17,780 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:17" (1/1) ... [2024-11-17 07:48:17,781 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:17" (1/1) ... [2024-11-17 07:48:17,782 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:17" (1/1) ... [2024-11-17 07:48:17,783 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:17" (1/1) ... [2024-11-17 07:48:17,785 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:48:17,785 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:48:17,785 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:48:17,786 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:48:17,786 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:17" (1/1) ... [2024-11-17 07:48:17,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:48:17,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:48:17,813 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 07:48:17,816 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 07:48:17,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 07:48:17,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 07:48:17,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-17 07:48:17,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-17 07:48:17,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-17 07:48:17,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 07:48:17,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 07:48:17,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-17 07:48:17,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-17 07:48:17,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-17 07:48:17,856 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-17 07:48:17,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:48:17,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-17 07:48:17,856 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-17 07:48:17,856 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-17 07:48:17,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 07:48:17,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:48:17,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 07:48:17,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 07:48:17,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-17 07:48:17,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-17 07:48:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-17 07:48:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:48:17,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:48:17,859 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 07:48:17,987 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:48:17,989 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:48:18,109 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L709: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2024-11-17 07:48:18,110 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L709-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2024-11-17 07:48:18,150 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:48:18,150 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:48:18,283 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:48:18,283 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:48:18,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:48:18 BoogieIcfgContainer [2024-11-17 07:48:18,283 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:48:18,285 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:48:18,285 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:48:18,287 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:48:18,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:48:17" (1/3) ... [2024-11-17 07:48:18,288 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d60fde0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:48:18, skipping insertion in model container [2024-11-17 07:48:18,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:48:17" (2/3) ... [2024-11-17 07:48:18,288 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d60fde0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:48:18, skipping insertion in model container [2024-11-17 07:48:18,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:48:18" (3/3) ... [2024-11-17 07:48:18,290 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_36-indirect_racefree.i [2024-11-17 07:48:18,301 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:48:18,301 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-17 07:48:18,301 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:48:18,329 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-17 07:48:18,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 69 transitions, 145 flow [2024-11-17 07:48:18,387 INFO L124 PetriNetUnfolderBase]: 15/91 cut-off events. [2024-11-17 07:48:18,387 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 07:48:18,392 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 274 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 07:48:18,392 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 69 transitions, 145 flow [2024-11-17 07:48:18,396 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 68 transitions, 143 flow [2024-11-17 07:48:18,402 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:48:18,407 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;@4997aef1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:48:18,407 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-17 07:48:18,411 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:48:18,411 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events. [2024-11-17 07:48:18,411 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:48:18,411 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:18,411 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 07:48:18,412 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 07:48:18,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:18,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1514244325, now seen corresponding path program 1 times [2024-11-17 07:48:18,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:18,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131984495] [2024-11-17 07:48:18,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:18,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:18,680 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 07:48:18,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:48:18,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131984495] [2024-11-17 07:48:18,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131984495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:48:18,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:48:18,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:48:18,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599438843] [2024-11-17 07:48:18,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:48:18,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:48:18,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:48:18,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:48:18,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:48:18,729 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 69 [2024-11-17 07:48:18,731 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 07:48:18,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:48:18,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 69 [2024-11-17 07:48:18,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:48:18,920 INFO L124 PetriNetUnfolderBase]: 143/445 cut-off events. [2024-11-17 07:48:18,920 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 07:48:18,922 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 2292 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 07:48:18,925 INFO L140 encePairwiseOnDemand]: 53/69 looper letters, 47 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2024-11-17 07:48:18,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 79 transitions, 265 flow [2024-11-17 07:48:18,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:48:18,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:48:18,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 192 transitions. [2024-11-17 07:48:18,936 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6956521739130435 [2024-11-17 07:48:18,938 INFO L175 Difference]: Start difference. First operand has 61 places, 68 transitions, 143 flow. Second operand 4 states and 192 transitions. [2024-11-17 07:48:18,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 79 transitions, 265 flow [2024-11-17 07:48:18,941 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 07:48:18,945 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 129 flow [2024-11-17 07:48:18,946 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 07:48:18,948 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 2 predicate places. [2024-11-17 07:48:18,949 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 129 flow [2024-11-17 07:48:18,949 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 07:48:18,949 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:18,950 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 07:48:18,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:48:18,950 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 07:48:18,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:18,951 INFO L85 PathProgramCache]: Analyzing trace with hash -615240827, now seen corresponding path program 1 times [2024-11-17 07:48:18,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:18,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967953849] [2024-11-17 07:48:18,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:18,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:48:18,977 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 07:48:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:48:19,012 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 07:48:19,012 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 07:48:19,014 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-11-17 07:48:19,015 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-11-17 07:48:19,016 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-11-17 07:48:19,016 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-11-17 07:48:19,016 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-11-17 07:48:19,016 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-11-17 07:48:19,016 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-11-17 07:48:19,016 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-11-17 07:48:19,016 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-11-17 07:48:19,017 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-11-17 07:48:19,017 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-11-17 07:48:19,017 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-11-17 07:48:19,017 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-11-17 07:48:19,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 07:48:19,017 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-17 07:48:19,019 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 07:48:19,019 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-17 07:48:19,044 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-17 07:48:19,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 104 transitions, 224 flow [2024-11-17 07:48:19,070 INFO L124 PetriNetUnfolderBase]: 28/170 cut-off events. [2024-11-17 07:48:19,070 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-17 07:48:19,071 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 610 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 07:48:19,071 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 104 transitions, 224 flow [2024-11-17 07:48:19,074 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 104 transitions, 224 flow [2024-11-17 07:48:19,077 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:48:19,078 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;@4997aef1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:48:19,078 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-17 07:48:19,080 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:48:19,080 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events. [2024-11-17 07:48:19,080 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:48:19,080 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:19,080 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 07:48:19,081 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 07:48:19,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:19,081 INFO L85 PathProgramCache]: Analyzing trace with hash 295988166, now seen corresponding path program 1 times [2024-11-17 07:48:19,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:19,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195581900] [2024-11-17 07:48:19,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:19,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:19,147 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 07:48:19,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:48:19,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195581900] [2024-11-17 07:48:19,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195581900] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:48:19,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:48:19,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:48:19,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370422234] [2024-11-17 07:48:19,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:48:19,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:48:19,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:48:19,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:48:19,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:48:19,158 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 104 [2024-11-17 07:48:19,159 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 07:48:19,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:48:19,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 104 [2024-11-17 07:48:19,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:48:20,055 INFO L124 PetriNetUnfolderBase]: 4303/9700 cut-off events. [2024-11-17 07:48:20,055 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2024-11-17 07:48:20,068 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 86089 event pairs, 2024 based on Foata normal form. 3030/11955 useless extension candidates. Maximal degree in co-relation 1325. Up to 6805 conditions per place. [2024-11-17 07:48:20,096 INFO L140 encePairwiseOnDemand]: 82/104 looper letters, 65 selfloop transitions, 3 changer transitions 0/113 dead transitions. [2024-11-17 07:48:20,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 113 transitions, 378 flow [2024-11-17 07:48:20,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:48:20,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:48:20,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 280 transitions. [2024-11-17 07:48:20,099 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6730769230769231 [2024-11-17 07:48:20,099 INFO L175 Difference]: Start difference. First operand has 91 places, 104 transitions, 224 flow. Second operand 4 states and 280 transitions. [2024-11-17 07:48:20,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 113 transitions, 378 flow [2024-11-17 07:48:20,100 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 07:48:20,104 INFO L231 Difference]: Finished difference. Result has 96 places, 90 transitions, 216 flow [2024-11-17 07:48:20,104 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 07:48:20,104 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 5 predicate places. [2024-11-17 07:48:20,104 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 216 flow [2024-11-17 07:48:20,105 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 07:48:20,105 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:20,105 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 07:48:20,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 07:48:20,105 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 07:48:20,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:20,106 INFO L85 PathProgramCache]: Analyzing trace with hash -219814786, now seen corresponding path program 1 times [2024-11-17 07:48:20,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:20,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964538393] [2024-11-17 07:48:20,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:20,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:20,198 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 07:48:20,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:48:20,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964538393] [2024-11-17 07:48:20,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964538393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:48:20,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087479179] [2024-11-17 07:48:20,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:20,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:48:20,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:48:20,201 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 07:48:20,203 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 07:48:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:20,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:48:20,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:48:20,317 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 07:48:20,317 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:48:20,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087479179] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:48:20,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:48:20,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-17 07:48:20,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859885063] [2024-11-17 07:48:20,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:48:20,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:48:20,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:48:20,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:48:20,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:48:20,330 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 104 [2024-11-17 07:48:20,330 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 07:48:20,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:48:20,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 104 [2024-11-17 07:48:20,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:48:21,128 INFO L124 PetriNetUnfolderBase]: 4039/8592 cut-off events. [2024-11-17 07:48:21,128 INFO L125 PetriNetUnfolderBase]: For 684/684 co-relation queries the response was YES. [2024-11-17 07:48:21,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15733 conditions, 8592 events. 4039/8592 cut-off events. For 684/684 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 72758 event pairs, 372 based on Foata normal form. 144/8397 useless extension candidates. Maximal degree in co-relation 1307. Up to 4012 conditions per place. [2024-11-17 07:48:21,163 INFO L140 encePairwiseOnDemand]: 99/104 looper letters, 105 selfloop transitions, 6 changer transitions 0/156 dead transitions. [2024-11-17 07:48:21,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 156 transitions, 568 flow [2024-11-17 07:48:21,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:48:21,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:48:21,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 382 transitions. [2024-11-17 07:48:21,166 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6121794871794872 [2024-11-17 07:48:21,166 INFO L175 Difference]: Start difference. First operand has 96 places, 90 transitions, 216 flow. Second operand 6 states and 382 transitions. [2024-11-17 07:48:21,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 156 transitions, 568 flow [2024-11-17 07:48:21,170 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 07:48:21,172 INFO L231 Difference]: Finished difference. Result has 99 places, 89 transitions, 222 flow [2024-11-17 07:48:21,172 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 07:48:21,173 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 8 predicate places. [2024-11-17 07:48:21,174 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 89 transitions, 222 flow [2024-11-17 07:48:21,174 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 07:48:21,174 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:21,174 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:48:21,187 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 07:48:21,375 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 07:48:21,375 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 07:48:21,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:21,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1222261189, now seen corresponding path program 1 times [2024-11-17 07:48:21,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:21,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114011431] [2024-11-17 07:48:21,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:21,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:21,449 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 07:48:21,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:48:21,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114011431] [2024-11-17 07:48:21,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114011431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:48:21,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:48:21,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:48:21,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581887060] [2024-11-17 07:48:21,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:48:21,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:48:21,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:48:21,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:48:21,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:48:21,461 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 104 [2024-11-17 07:48:21,461 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 07:48:21,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:48:21,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 104 [2024-11-17 07:48:21,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:48:22,027 INFO L124 PetriNetUnfolderBase]: 3441/7714 cut-off events. [2024-11-17 07:48:22,027 INFO L125 PetriNetUnfolderBase]: For 618/779 co-relation queries the response was YES. [2024-11-17 07:48:22,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13681 conditions, 7714 events. 3441/7714 cut-off events. For 618/779 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 65838 event pairs, 1096 based on Foata normal form. 147/7428 useless extension candidates. Maximal degree in co-relation 10807. Up to 4836 conditions per place. [2024-11-17 07:48:22,051 INFO L140 encePairwiseOnDemand]: 98/104 looper letters, 91 selfloop transitions, 6 changer transitions 0/145 dead transitions. [2024-11-17 07:48:22,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 145 transitions, 561 flow [2024-11-17 07:48:22,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:48:22,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:48:22,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 338 transitions. [2024-11-17 07:48:22,055 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-11-17 07:48:22,055 INFO L175 Difference]: Start difference. First operand has 99 places, 89 transitions, 222 flow. Second operand 5 states and 338 transitions. [2024-11-17 07:48:22,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 145 transitions, 561 flow [2024-11-17 07:48:22,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 145 transitions, 553 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:48:22,058 INFO L231 Difference]: Finished difference. Result has 103 places, 94 transitions, 260 flow [2024-11-17 07:48:22,058 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=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=260, PETRI_PLACES=103, PETRI_TRANSITIONS=94} [2024-11-17 07:48:22,059 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 12 predicate places. [2024-11-17 07:48:22,060 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 94 transitions, 260 flow [2024-11-17 07:48:22,060 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 07:48:22,060 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:22,060 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-17 07:48:22,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 07:48:22,060 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 07:48:22,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:22,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1775676591, now seen corresponding path program 1 times [2024-11-17 07:48:22,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:22,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255317859] [2024-11-17 07:48:22,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:22,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:22,100 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 07:48:22,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:48:22,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255317859] [2024-11-17 07:48:22,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255317859] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:48:22,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:48:22,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:48:22,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760676248] [2024-11-17 07:48:22,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:48:22,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:48:22,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:48:22,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:48:22,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:48:22,114 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 104 [2024-11-17 07:48:22,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 94 transitions, 260 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 07:48:22,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:48:22,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 104 [2024-11-17 07:48:22,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:48:22,861 INFO L124 PetriNetUnfolderBase]: 3989/8267 cut-off events. [2024-11-17 07:48:22,861 INFO L125 PetriNetUnfolderBase]: For 2169/2169 co-relation queries the response was YES. [2024-11-17 07:48:22,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16563 conditions, 8267 events. 3989/8267 cut-off events. For 2169/2169 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 67647 event pairs, 253 based on Foata normal form. 152/8303 useless extension candidates. Maximal degree in co-relation 15401. Up to 5155 conditions per place. [2024-11-17 07:48:22,903 INFO L140 encePairwiseOnDemand]: 99/104 looper letters, 97 selfloop transitions, 6 changer transitions 0/148 dead transitions. [2024-11-17 07:48:22,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 148 transitions, 618 flow [2024-11-17 07:48:22,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:48:22,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:48:22,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 267 transitions. [2024-11-17 07:48:22,904 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6418269230769231 [2024-11-17 07:48:22,905 INFO L175 Difference]: Start difference. First operand has 103 places, 94 transitions, 260 flow. Second operand 4 states and 267 transitions. [2024-11-17 07:48:22,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 148 transitions, 618 flow [2024-11-17 07:48:22,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 148 transitions, 614 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-17 07:48:22,911 INFO L231 Difference]: Finished difference. Result has 105 places, 94 transitions, 272 flow [2024-11-17 07:48:22,912 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=272, PETRI_PLACES=105, PETRI_TRANSITIONS=94} [2024-11-17 07:48:22,914 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 14 predicate places. [2024-11-17 07:48:22,914 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 94 transitions, 272 flow [2024-11-17 07:48:22,914 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 07:48:22,914 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:22,915 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1] [2024-11-17 07:48:22,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 07:48:22,915 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 07:48:22,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:22,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1930433345, now seen corresponding path program 1 times [2024-11-17 07:48:22,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:22,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235773048] [2024-11-17 07:48:22,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:22,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:48:22,932 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 07:48:22,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:48:22,948 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 07:48:22,948 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 07:48:22,948 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-11-17 07:48:22,948 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-11-17 07:48:22,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-11-17 07:48:22,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-11-17 07:48:22,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-11-17 07:48:22,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-11-17 07:48:22,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-11-17 07:48:22,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-11-17 07:48:22,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-11-17 07:48:22,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-11-17 07:48:22,950 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-11-17 07:48:22,950 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-11-17 07:48:22,950 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-11-17 07:48:22,950 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-11-17 07:48:22,950 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-11-17 07:48:22,950 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-11-17 07:48:22,950 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-11-17 07:48:22,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 07:48:22,951 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-17 07:48:22,951 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 07:48:22,951 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-17 07:48:22,974 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-17 07:48:22,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 139 transitions, 305 flow [2024-11-17 07:48:22,997 INFO L124 PetriNetUnfolderBase]: 46/274 cut-off events. [2024-11-17 07:48:22,998 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-17 07:48:22,999 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 11. Compared 1092 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 07:48:22,999 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 139 transitions, 305 flow [2024-11-17 07:48:23,001 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 139 transitions, 305 flow [2024-11-17 07:48:23,002 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:48:23,002 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;@4997aef1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:48:23,002 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-17 07:48:23,004 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:48:23,004 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events. [2024-11-17 07:48:23,004 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:48:23,005 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:23,005 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 07:48:23,005 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 07:48:23,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:23,005 INFO L85 PathProgramCache]: Analyzing trace with hash 113152967, now seen corresponding path program 1 times [2024-11-17 07:48:23,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:23,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930032272] [2024-11-17 07:48:23,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:23,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:23,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:23,036 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 07:48:23,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:48:23,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930032272] [2024-11-17 07:48:23,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930032272] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:48:23,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:48:23,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:48:23,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312696324] [2024-11-17 07:48:23,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:48:23,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:48:23,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:48:23,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:48:23,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:48:23,048 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 139 [2024-11-17 07:48:23,049 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 07:48:23,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:48:23,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 139 [2024-11-17 07:48:23,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:48:33,554 INFO L124 PetriNetUnfolderBase]: 81352/151063 cut-off events. [2024-11-17 07:48:33,554 INFO L125 PetriNetUnfolderBase]: For 1719/1719 co-relation queries the response was YES. [2024-11-17 07:48:33,833 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 1639565 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 07:48:34,540 INFO L140 encePairwiseOnDemand]: 111/139 looper letters, 78 selfloop transitions, 3 changer transitions 0/142 dead transitions. [2024-11-17 07:48:34,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 142 transitions, 473 flow [2024-11-17 07:48:34,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:48:34,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:48:34,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 363 transitions. [2024-11-17 07:48:34,542 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6528776978417267 [2024-11-17 07:48:34,542 INFO L175 Difference]: Start difference. First operand has 121 places, 139 transitions, 305 flow. Second operand 4 states and 363 transitions. [2024-11-17 07:48:34,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 142 transitions, 473 flow [2024-11-17 07:48:34,545 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 07:48:34,547 INFO L231 Difference]: Finished difference. Result has 126 places, 119 transitions, 285 flow [2024-11-17 07:48:34,547 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 07:48:34,548 INFO L277 CegarLoopForPetriNet]: 121 programPoint places, 5 predicate places. [2024-11-17 07:48:34,548 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 119 transitions, 285 flow [2024-11-17 07:48:34,548 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 07:48:34,548 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:34,548 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 07:48:34,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 07:48:34,549 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 07:48:34,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:34,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1338142656, now seen corresponding path program 1 times [2024-11-17 07:48:34,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:34,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284554661] [2024-11-17 07:48:34,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:34,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:34,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:34,611 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 07:48:34,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:48:34,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284554661] [2024-11-17 07:48:34,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284554661] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:48:34,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057298965] [2024-11-17 07:48:34,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:34,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:48:34,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:48:34,614 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 07:48:34,615 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 07:48:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:34,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:48:34,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:48:34,712 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 07:48:34,713 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:48:34,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057298965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:48:34,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:48:34,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-17 07:48:34,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103942472] [2024-11-17 07:48:34,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:48:34,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:48:34,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:48:34,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:48:34,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:48:34,722 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 139 [2024-11-17 07:48:34,723 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 07:48:34,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:48:34,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 139 [2024-11-17 07:48:34,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:48:43,782 INFO L124 PetriNetUnfolderBase]: 76336/130702 cut-off events. [2024-11-17 07:48:43,782 INFO L125 PetriNetUnfolderBase]: For 7168/7168 co-relation queries the response was YES. [2024-11-17 07:48:44,282 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 2831. Compared 1311046 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 07:48:44,673 INFO L140 encePairwiseOnDemand]: 134/139 looper letters, 140 selfloop transitions, 6 changer transitions 0/207 dead transitions. [2024-11-17 07:48:44,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 207 transitions, 751 flow [2024-11-17 07:48:44,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:48:44,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:48:44,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 513 transitions. [2024-11-17 07:48:44,675 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6151079136690647 [2024-11-17 07:48:44,675 INFO L175 Difference]: Start difference. First operand has 126 places, 119 transitions, 285 flow. Second operand 6 states and 513 transitions. [2024-11-17 07:48:44,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 207 transitions, 751 flow [2024-11-17 07:48:44,685 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 07:48:44,687 INFO L231 Difference]: Finished difference. Result has 129 places, 118 transitions, 291 flow [2024-11-17 07:48:44,687 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 07:48:44,687 INFO L277 CegarLoopForPetriNet]: 121 programPoint places, 8 predicate places. [2024-11-17 07:48:44,688 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 118 transitions, 291 flow [2024-11-17 07:48:44,688 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 07:48:44,688 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:44,688 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:48:44,703 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 07:48:44,888 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 07:48:44,889 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 07:48:44,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:44,890 INFO L85 PathProgramCache]: Analyzing trace with hash -204761444, now seen corresponding path program 1 times [2024-11-17 07:48:44,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:44,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988919337] [2024-11-17 07:48:44,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:44,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:44,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:44,960 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 07:48:44,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:48:44,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988919337] [2024-11-17 07:48:44,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988919337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:48:44,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:48:44,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:48:44,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66432726] [2024-11-17 07:48:44,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:48:44,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:48:44,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:48:44,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:48:44,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:48:44,967 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 139 [2024-11-17 07:48:44,967 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 07:48:44,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:48:44,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 139 [2024-11-17 07:48:44,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:48:53,334 INFO L124 PetriNetUnfolderBase]: 68774/125051 cut-off events. [2024-11-17 07:48:53,334 INFO L125 PetriNetUnfolderBase]: For 8848/11096 co-relation queries the response was YES. [2024-11-17 07:48:53,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226689 conditions, 125051 events. 68774/125051 cut-off events. For 8848/11096 co-relation queries the response was YES. Maximal size of possible extension queue 2957. Compared 1310173 event pairs, 28005 based on Foata normal form. 1803/120424 useless extension candidates. Maximal degree in co-relation 151961. Up to 88693 conditions per place. [2024-11-17 07:48:54,234 INFO L140 encePairwiseOnDemand]: 132/139 looper letters, 129 selfloop transitions, 8 changer transitions 0/201 dead transitions. [2024-11-17 07:48:54,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 201 transitions, 788 flow [2024-11-17 07:48:54,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:48:54,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:48:54,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 458 transitions. [2024-11-17 07:48:54,236 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6589928057553956 [2024-11-17 07:48:54,236 INFO L175 Difference]: Start difference. First operand has 129 places, 118 transitions, 291 flow. Second operand 5 states and 458 transitions. [2024-11-17 07:48:54,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 201 transitions, 788 flow [2024-11-17 07:48:54,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 201 transitions, 780 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:48:54,241 INFO L231 Difference]: Finished difference. Result has 133 places, 125 transitions, 346 flow [2024-11-17 07:48:54,242 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=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=346, PETRI_PLACES=133, PETRI_TRANSITIONS=125} [2024-11-17 07:48:54,242 INFO L277 CegarLoopForPetriNet]: 121 programPoint places, 12 predicate places. [2024-11-17 07:48:54,242 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 125 transitions, 346 flow [2024-11-17 07:48:54,242 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 07:48:54,242 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:48:54,242 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-17 07:48:54,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 07:48:54,244 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 07:48:54,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:48:54,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1467250120, now seen corresponding path program 1 times [2024-11-17 07:48:54,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:48:54,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482684603] [2024-11-17 07:48:54,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:48:54,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:48:54,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:48:54,272 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 07:48:54,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:48:54,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482684603] [2024-11-17 07:48:54,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482684603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:48:54,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:48:54,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:48:54,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257412017] [2024-11-17 07:48:54,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:48:54,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:48:54,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:48:54,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:48:54,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:48:54,281 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 139 [2024-11-17 07:48:54,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 125 transitions, 346 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 07:48:54,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:48:54,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 139 [2024-11-17 07:48:54,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand