./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f 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_07-cond_racing2.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 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:18:00,921 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:18:00,984 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:18:00,987 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:18:00,987 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:18:01,004 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:18:01,005 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:18:01,005 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:18:01,005 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:18:01,005 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:18:01,006 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:18:01,006 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:18:01,006 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:18:01,006 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:18:01,007 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:18:01,007 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:18:01,007 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:18:01,007 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:18:01,008 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:18:01,008 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:18:01,008 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:18:01,009 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:18:01,009 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:18:01,009 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:18:01,010 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:18:01,010 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:18:01,010 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:18:01,010 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:18:01,010 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:18:01,011 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:18:01,011 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:18:01,011 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:18:01,013 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:18:01,013 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:18:01,013 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:18:01,014 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:18:01,014 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:18:01,014 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:18:01,014 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:18:01,015 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:18:01,015 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:18:01,015 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:18:01,015 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:18:01,016 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:18:01,016 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef [2024-11-10 22:18:01,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:18:01,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:18:01,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:18:01,224 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:18:01,224 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:18:01,225 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i [2024-11-10 22:18:02,654 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:18:02,892 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:18:02,893 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_07-cond_racing2.i [2024-11-10 22:18:02,906 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5013b323e/759f3fab547d426885af339e257d0227/FLAG48ffc8af8 [2024-11-10 22:18:02,917 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5013b323e/759f3fab547d426885af339e257d0227 [2024-11-10 22:18:02,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:18:02,920 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:18:02,921 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:18:02,921 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:18:02,925 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:18:02,926 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:18:02" (1/1) ... [2024-11-10 22:18:02,927 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@183488d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:02, skipping insertion in model container [2024-11-10 22:18:02,927 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:18:02" (1/1) ... [2024-11-10 22:18:02,963 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:18:03,346 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:18:03,370 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:18:03,419 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:18:03,477 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:18:03,478 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:03 WrapperNode [2024-11-10 22:18:03,478 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:18:03,479 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:18:03,479 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:18:03,479 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:18:03,485 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:03" (1/1) ... [2024-11-10 22:18:03,506 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:03" (1/1) ... [2024-11-10 22:18:03,532 INFO L138 Inliner]: procedures = 271, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 147 [2024-11-10 22:18:03,533 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:18:03,535 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:18:03,535 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:18:03,535 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:18:03,543 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:03" (1/1) ... [2024-11-10 22:18:03,544 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:03" (1/1) ... [2024-11-10 22:18:03,549 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:03" (1/1) ... [2024-11-10 22:18:03,569 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 2, 5, 5]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 0, 5, 5]. The 1 writes are split as follows [0, 1, 0, 0]. [2024-11-10 22:18:03,569 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:03" (1/1) ... [2024-11-10 22:18:03,570 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:03" (1/1) ... [2024-11-10 22:18:03,578 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:03" (1/1) ... [2024-11-10 22:18:03,579 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:03" (1/1) ... [2024-11-10 22:18:03,583 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:03" (1/1) ... [2024-11-10 22:18:03,585 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:03" (1/1) ... [2024-11-10 22:18:03,587 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:18:03,591 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:18:03,592 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:18:03,592 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:18:03,593 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:03" (1/1) ... [2024-11-10 22:18:03,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:18:03,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:18:03,629 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) [2024-11-10 22:18:03,634 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 [2024-11-10 22:18:03,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 22:18:03,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 22:18:03,670 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 22:18:03,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 22:18:03,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 22:18:03,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 22:18:03,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-10 22:18:03,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 22:18:03,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 22:18:03,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 22:18:03,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-10 22:18:03,671 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 22:18:03,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:18:03,671 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-10 22:18:03,671 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-10 22:18:03,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:18:03,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 22:18:03,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 22:18:03,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-10 22:18:03,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:18:03,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:18:03,674 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:18:03,792 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:18:03,794 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:18:03,955 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L945: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2024-11-10 22:18:03,955 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L945-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2024-11-10 22:18:03,996 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:18:04,000 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:18:04,159 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:18:04,161 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:18:04,161 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:18:04 BoogieIcfgContainer [2024-11-10 22:18:04,161 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:18:04,163 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:18:04,164 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:18:04,167 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:18:04,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:18:02" (1/3) ... [2024-11-10 22:18:04,168 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3277da9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:18:04, skipping insertion in model container [2024-11-10 22:18:04,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:03" (2/3) ... [2024-11-10 22:18:04,169 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3277da9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:18:04, skipping insertion in model container [2024-11-10 22:18:04,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:18:04" (3/3) ... [2024-11-10 22:18:04,171 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_07-cond_racing2.i [2024-11-10 22:18:04,185 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:18:04,185 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-10 22:18:04,185 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:18:04,267 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-10 22:18:04,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 80 transitions, 167 flow [2024-11-10 22:18:04,388 INFO L124 PetriNetUnfolderBase]: 21/113 cut-off events. [2024-11-10 22:18:04,389 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 22:18:04,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 113 events. 21/113 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 354 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 71. Up to 6 conditions per place. [2024-11-10 22:18:04,396 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 80 transitions, 167 flow [2024-11-10 22:18:04,402 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 79 transitions, 165 flow [2024-11-10 22:18:04,417 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:18:04,430 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;@6a496c12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:18:04,431 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-10 22:18:04,439 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:18:04,443 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2024-11-10 22:18:04,443 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:18:04,443 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:04,444 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 22:18:04,445 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-10 22:18:04,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:04,452 INFO L85 PathProgramCache]: Analyzing trace with hash 523281989, now seen corresponding path program 1 times [2024-11-10 22:18:04,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:04,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017195143] [2024-11-10 22:18:04,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:04,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:04,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:04,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:18:04,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:18:04,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017195143] [2024-11-10 22:18:04,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017195143] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:18:04,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:18:04,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:18:04,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927771447] [2024-11-10 22:18:04,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:18:04,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:18:04,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:18:04,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:18:04,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:18:04,847 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 80 [2024-11-10 22:18:04,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 79 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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) [2024-11-10 22:18:04,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:18:04,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 80 [2024-11-10 22:18:04,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:18:05,043 INFO L124 PetriNetUnfolderBase]: 196/605 cut-off events. [2024-11-10 22:18:05,043 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 22:18:05,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 984 conditions, 605 events. 196/605 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3475 event pairs, 118 based on Foata normal form. 156/705 useless extension candidates. Maximal degree in co-relation 963. Up to 337 conditions per place. [2024-11-10 22:18:05,048 INFO L140 encePairwiseOnDemand]: 64/80 looper letters, 48 selfloop transitions, 3 changer transitions 0/90 dead transitions. [2024-11-10 22:18:05,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 90 transitions, 289 flow [2024-11-10 22:18:05,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:18:05,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:18:05,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 233 transitions. [2024-11-10 22:18:05,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.728125 [2024-11-10 22:18:05,060 INFO L175 Difference]: Start difference. First operand has 69 places, 79 transitions, 165 flow. Second operand 4 states and 233 transitions. [2024-11-10 22:18:05,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 90 transitions, 289 flow [2024-11-10 22:18:05,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 90 transitions, 289 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:18:05,065 INFO L231 Difference]: Finished difference. Result has 71 places, 67 transitions, 151 flow [2024-11-10 22:18:05,066 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=71, PETRI_TRANSITIONS=67} [2024-11-10 22:18:05,069 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 2 predicate places. [2024-11-10 22:18:05,070 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 67 transitions, 151 flow [2024-11-10 22:18:05,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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) [2024-11-10 22:18:05,070 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:05,070 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 22:18:05,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:18:05,070 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-10 22:18:05,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:05,071 INFO L85 PathProgramCache]: Analyzing trace with hash 788044493, now seen corresponding path program 1 times [2024-11-10 22:18:05,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:05,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979913522] [2024-11-10 22:18:05,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:05,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:18:05,139 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:18:05,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:18:05,204 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:18:05,204 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 22:18:05,206 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2024-11-10 22:18:05,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2024-11-10 22:18:05,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2024-11-10 22:18:05,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2024-11-10 22:18:05,209 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2024-11-10 22:18:05,209 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2024-11-10 22:18:05,210 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2024-11-10 22:18:05,210 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2024-11-10 22:18:05,211 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2024-11-10 22:18:05,211 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2024-11-10 22:18:05,211 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2024-11-10 22:18:05,211 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2024-11-10 22:18:05,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2024-11-10 22:18:05,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2024-11-10 22:18:05,213 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2024-11-10 22:18:05,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 22:18:05,213 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-10 22:18:05,216 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 22:18:05,216 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-10 22:18:05,249 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 22:18:05,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 115 transitions, 246 flow [2024-11-10 22:18:05,277 INFO L124 PetriNetUnfolderBase]: 37/203 cut-off events. [2024-11-10 22:18:05,278 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-10 22:18:05,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 203 events. 37/203 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 774 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 121. Up to 9 conditions per place. [2024-11-10 22:18:05,280 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 115 transitions, 246 flow [2024-11-10 22:18:05,283 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 115 transitions, 246 flow [2024-11-10 22:18:05,285 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:18:05,285 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;@6a496c12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:18:05,286 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-10 22:18:05,290 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:18:05,291 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2024-11-10 22:18:05,292 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:18:05,293 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:05,293 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 22:18:05,293 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:18:05,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:05,294 INFO L85 PathProgramCache]: Analyzing trace with hash -369556154, now seen corresponding path program 1 times [2024-11-10 22:18:05,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:05,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461568015] [2024-11-10 22:18:05,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:05,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:05,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:18:05,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:18:05,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461568015] [2024-11-10 22:18:05,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461568015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:18:05,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:18:05,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:18:05,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385835919] [2024-11-10 22:18:05,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:18:05,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:18:05,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:18:05,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:18:05,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:18:05,414 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 115 [2024-11-10 22:18:05,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 115 transitions, 246 flow. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 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) [2024-11-10 22:18:05,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:18:05,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 115 [2024-11-10 22:18:05,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:18:06,340 INFO L124 PetriNetUnfolderBase]: 4994/11059 cut-off events. [2024-11-10 22:18:06,340 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2024-11-10 22:18:06,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18671 conditions, 11059 events. 4994/11059 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 99889 event pairs, 2084 based on Foata normal form. 3168/13130 useless extension candidates. Maximal degree in co-relation 1488. Up to 7508 conditions per place. [2024-11-10 22:18:06,403 INFO L140 encePairwiseOnDemand]: 93/115 looper letters, 66 selfloop transitions, 3 changer transitions 0/124 dead transitions. [2024-11-10 22:18:06,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 124 transitions, 402 flow [2024-11-10 22:18:06,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:18:06,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:18:06,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 321 transitions. [2024-11-10 22:18:06,409 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6978260869565217 [2024-11-10 22:18:06,409 INFO L175 Difference]: Start difference. First operand has 99 places, 115 transitions, 246 flow. Second operand 4 states and 321 transitions. [2024-11-10 22:18:06,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 124 transitions, 402 flow [2024-11-10 22:18:06,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 124 transitions, 402 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:18:06,413 INFO L231 Difference]: Finished difference. Result has 104 places, 101 transitions, 238 flow [2024-11-10 22:18:06,414 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=238, PETRI_PLACES=104, PETRI_TRANSITIONS=101} [2024-11-10 22:18:06,414 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 5 predicate places. [2024-11-10 22:18:06,415 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 101 transitions, 238 flow [2024-11-10 22:18:06,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 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) [2024-11-10 22:18:06,415 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:06,415 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 22:18:06,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 22:18:06,416 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:18:06,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:06,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1471220574, now seen corresponding path program 1 times [2024-11-10 22:18:06,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:06,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249969942] [2024-11-10 22:18:06,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:06,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:06,534 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:18:06,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:18:06,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249969942] [2024-11-10 22:18:06,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249969942] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:18:06,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002217039] [2024-11-10 22:18:06,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:06,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:18:06,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:18:06,541 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) [2024-11-10 22:18:06,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 22:18:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:06,652 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:18:06,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:18:06,707 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:18:06,708 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:18:06,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002217039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:18:06,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:18:06,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-10 22:18:06,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654832260] [2024-11-10 22:18:06,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:18:06,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:18:06,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:18:06,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:18:06,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:18:06,719 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 115 [2024-11-10 22:18:06,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 101 transitions, 238 flow. Second operand has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 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) [2024-11-10 22:18:06,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:18:06,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 115 [2024-11-10 22:18:06,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:18:07,675 INFO L124 PetriNetUnfolderBase]: 4232/9933 cut-off events. [2024-11-10 22:18:07,675 INFO L125 PetriNetUnfolderBase]: For 634/634 co-relation queries the response was YES. [2024-11-10 22:18:07,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16955 conditions, 9933 events. 4232/9933 cut-off events. For 634/634 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 89992 event pairs, 872 based on Foata normal form. 144/8908 useless extension candidates. Maximal degree in co-relation 15369. Up to 3893 conditions per place. [2024-11-10 22:18:07,717 INFO L140 encePairwiseOnDemand]: 110/115 looper letters, 106 selfloop transitions, 6 changer transitions 0/167 dead transitions. [2024-11-10 22:18:07,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 167 transitions, 592 flow [2024-11-10 22:18:07,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:18:07,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:18:07,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 443 transitions. [2024-11-10 22:18:07,719 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6420289855072464 [2024-11-10 22:18:07,719 INFO L175 Difference]: Start difference. First operand has 104 places, 101 transitions, 238 flow. Second operand 6 states and 443 transitions. [2024-11-10 22:18:07,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 167 transitions, 592 flow [2024-11-10 22:18:07,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 167 transitions, 590 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:18:07,725 INFO L231 Difference]: Finished difference. Result has 107 places, 100 transitions, 244 flow [2024-11-10 22:18:07,725 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=244, PETRI_PLACES=107, PETRI_TRANSITIONS=100} [2024-11-10 22:18:07,725 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 8 predicate places. [2024-11-10 22:18:07,726 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 100 transitions, 244 flow [2024-11-10 22:18:07,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 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) [2024-11-10 22:18:07,726 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:07,726 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:18:07,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 22:18:07,927 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 [2024-11-10 22:18:07,927 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:18:07,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:07,928 INFO L85 PathProgramCache]: Analyzing trace with hash -511724669, now seen corresponding path program 1 times [2024-11-10 22:18:07,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:07,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688366932] [2024-11-10 22:18:07,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:07,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:07,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:18:07,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:18:07,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688366932] [2024-11-10 22:18:07,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688366932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:18:07,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:18:07,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:18:07,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831512269] [2024-11-10 22:18:07,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:18:07,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:18:07,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:18:07,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:18:07,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:18:08,001 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 115 [2024-11-10 22:18:08,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 100 transitions, 244 flow. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:18:08,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:18:08,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 115 [2024-11-10 22:18:08,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:18:09,180 INFO L124 PetriNetUnfolderBase]: 6314/13615 cut-off events. [2024-11-10 22:18:09,180 INFO L125 PetriNetUnfolderBase]: For 829/990 co-relation queries the response was YES. [2024-11-10 22:18:09,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23901 conditions, 13615 events. 6314/13615 cut-off events. For 829/990 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 124259 event pairs, 1497 based on Foata normal form. 223/13013 useless extension candidates. Maximal degree in co-relation 19173. Up to 6459 conditions per place. [2024-11-10 22:18:09,235 INFO L140 encePairwiseOnDemand]: 106/115 looper letters, 122 selfloop transitions, 12 changer transitions 0/191 dead transitions. [2024-11-10 22:18:09,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 191 transitions, 742 flow [2024-11-10 22:18:09,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:18:09,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:18:09,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 420 transitions. [2024-11-10 22:18:09,236 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7304347826086957 [2024-11-10 22:18:09,236 INFO L175 Difference]: Start difference. First operand has 107 places, 100 transitions, 244 flow. Second operand 5 states and 420 transitions. [2024-11-10 22:18:09,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 191 transitions, 742 flow [2024-11-10 22:18:09,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 191 transitions, 731 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:18:09,241 INFO L231 Difference]: Finished difference. Result has 112 places, 111 transitions, 332 flow [2024-11-10 22:18:09,241 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=332, PETRI_PLACES=112, PETRI_TRANSITIONS=111} [2024-11-10 22:18:09,241 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 13 predicate places. [2024-11-10 22:18:09,242 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 111 transitions, 332 flow [2024-11-10 22:18:09,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:18:09,242 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:09,242 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-10 22:18:09,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 22:18:09,242 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:18:09,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:09,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1636801941, now seen corresponding path program 1 times [2024-11-10 22:18:09,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:09,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11404502] [2024-11-10 22:18:09,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:09,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:09,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:09,281 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:18:09,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:18:09,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11404502] [2024-11-10 22:18:09,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11404502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:18:09,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:18:09,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:18:09,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344242514] [2024-11-10 22:18:09,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:18:09,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:18:09,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:18:09,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:18:09,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:18:09,291 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 115 [2024-11-10 22:18:09,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 111 transitions, 332 flow. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 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) [2024-11-10 22:18:09,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:18:09,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 115 [2024-11-10 22:18:09,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:18:10,346 INFO L124 PetriNetUnfolderBase]: 5644/13669 cut-off events. [2024-11-10 22:18:10,346 INFO L125 PetriNetUnfolderBase]: For 4264/4268 co-relation queries the response was YES. [2024-11-10 22:18:10,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25891 conditions, 13669 events. 5644/13669 cut-off events. For 4264/4268 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 131389 event pairs, 511 based on Foata normal form. 152/12626 useless extension candidates. Maximal degree in co-relation 22303. Up to 7529 conditions per place. [2024-11-10 22:18:10,434 INFO L140 encePairwiseOnDemand]: 110/115 looper letters, 104 selfloop transitions, 6 changer transitions 0/165 dead transitions. [2024-11-10 22:18:10,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 165 transitions, 722 flow [2024-11-10 22:18:10,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:18:10,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:18:10,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 308 transitions. [2024-11-10 22:18:10,435 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6695652173913044 [2024-11-10 22:18:10,436 INFO L175 Difference]: Start difference. First operand has 112 places, 111 transitions, 332 flow. Second operand 4 states and 308 transitions. [2024-11-10 22:18:10,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 165 transitions, 722 flow [2024-11-10 22:18:10,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 165 transitions, 718 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-10 22:18:10,446 INFO L231 Difference]: Finished difference. Result has 114 places, 111 transitions, 344 flow [2024-11-10 22:18:10,446 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=344, PETRI_PLACES=114, PETRI_TRANSITIONS=111} [2024-11-10 22:18:10,446 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 15 predicate places. [2024-11-10 22:18:10,446 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 111 transitions, 344 flow [2024-11-10 22:18:10,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 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) [2024-11-10 22:18:10,447 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:10,447 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:18:10,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 22:18:10,449 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:18:10,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:10,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1640298217, now seen corresponding path program 1 times [2024-11-10 22:18:10,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:10,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034281072] [2024-11-10 22:18:10,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:10,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:10,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:18:10,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:18:10,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034281072] [2024-11-10 22:18:10,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034281072] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:18:10,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131147888] [2024-11-10 22:18:10,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:10,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:18:10,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:18:10,533 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) [2024-11-10 22:18:10,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 22:18:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:10,649 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 22:18:10,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:18:10,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:18:10,670 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:18:10,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131147888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:18:10,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:18:10,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-10 22:18:10,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929229852] [2024-11-10 22:18:10,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:18:10,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:18:10,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:18:10,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:18:10,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 22:18:10,683 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 115 [2024-11-10 22:18:10,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 111 transitions, 344 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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) [2024-11-10 22:18:10,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:18:10,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 115 [2024-11-10 22:18:10,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:18:11,637 INFO L124 PetriNetUnfolderBase]: 6279/13737 cut-off events. [2024-11-10 22:18:11,638 INFO L125 PetriNetUnfolderBase]: For 5108/5148 co-relation queries the response was YES. [2024-11-10 22:18:11,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27275 conditions, 13737 events. 6279/13737 cut-off events. For 5108/5148 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 124987 event pairs, 4670 based on Foata normal form. 169/13241 useless extension candidates. Maximal degree in co-relation 23412. Up to 8803 conditions per place. [2024-11-10 22:18:11,730 INFO L140 encePairwiseOnDemand]: 112/115 looper letters, 86 selfloop transitions, 2 changer transitions 0/141 dead transitions. [2024-11-10 22:18:11,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 141 transitions, 628 flow [2024-11-10 22:18:11,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:18:11,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:18:11,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2024-11-10 22:18:11,732 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.663768115942029 [2024-11-10 22:18:11,732 INFO L175 Difference]: Start difference. First operand has 114 places, 111 transitions, 344 flow. Second operand 3 states and 229 transitions. [2024-11-10 22:18:11,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 141 transitions, 628 flow [2024-11-10 22:18:11,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 141 transitions, 620 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:18:11,740 INFO L231 Difference]: Finished difference. Result has 113 places, 110 transitions, 338 flow [2024-11-10 22:18:11,741 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=338, PETRI_PLACES=113, PETRI_TRANSITIONS=110} [2024-11-10 22:18:11,741 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 14 predicate places. [2024-11-10 22:18:11,742 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 110 transitions, 338 flow [2024-11-10 22:18:11,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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) [2024-11-10 22:18:11,742 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:11,742 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:18:11,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 22:18:11,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-10 22:18:11,947 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:18:11,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:11,948 INFO L85 PathProgramCache]: Analyzing trace with hash 690363357, now seen corresponding path program 1 times [2024-11-10 22:18:11,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:11,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707858720] [2024-11-10 22:18:11,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:11,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:12,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:18:12,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:18:12,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707858720] [2024-11-10 22:18:12,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707858720] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:18:12,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115936118] [2024-11-10 22:18:12,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:12,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:18:12,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:18:12,024 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:18:12,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 22:18:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:12,141 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 22:18:12,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:18:12,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:18:12,151 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:18:12,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115936118] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:18:12,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:18:12,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2024-11-10 22:18:12,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816228358] [2024-11-10 22:18:12,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:18:12,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:18:12,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:18:12,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:18:12,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 22:18:12,163 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 115 [2024-11-10 22:18:12,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 110 transitions, 338 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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) [2024-11-10 22:18:12,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:18:12,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 115 [2024-11-10 22:18:12,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:18:13,654 INFO L124 PetriNetUnfolderBase]: 10673/23605 cut-off events. [2024-11-10 22:18:13,654 INFO L125 PetriNetUnfolderBase]: For 7474/7515 co-relation queries the response was YES. [2024-11-10 22:18:13,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46304 conditions, 23605 events. 10673/23605 cut-off events. For 7474/7515 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 235632 event pairs, 5168 based on Foata normal form. 177/22981 useless extension candidates. Maximal degree in co-relation 42364. Up to 9158 conditions per place. [2024-11-10 22:18:13,849 INFO L140 encePairwiseOnDemand]: 110/115 looper letters, 99 selfloop transitions, 4 changer transitions 0/156 dead transitions. [2024-11-10 22:18:13,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 156 transitions, 704 flow [2024-11-10 22:18:13,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:18:13,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:18:13,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2024-11-10 22:18:13,851 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7014492753623188 [2024-11-10 22:18:13,852 INFO L175 Difference]: Start difference. First operand has 113 places, 110 transitions, 338 flow. Second operand 3 states and 242 transitions. [2024-11-10 22:18:13,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 156 transitions, 704 flow [2024-11-10 22:18:13,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 156 transitions, 698 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:18:13,945 INFO L231 Difference]: Finished difference. Result has 115 places, 113 transitions, 364 flow [2024-11-10 22:18:13,945 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=364, PETRI_PLACES=115, PETRI_TRANSITIONS=113} [2024-11-10 22:18:13,946 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, 16 predicate places. [2024-11-10 22:18:13,946 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 113 transitions, 364 flow [2024-11-10 22:18:13,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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) [2024-11-10 22:18:13,947 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:13,947 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:18:13,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 22:18:14,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:18:14,148 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:18:14,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:14,149 INFO L85 PathProgramCache]: Analyzing trace with hash -74126812, now seen corresponding path program 1 times [2024-11-10 22:18:14,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:14,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905570081] [2024-11-10 22:18:14,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:14,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:14,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:18:14,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:18:14,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905570081] [2024-11-10 22:18:14,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905570081] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:18:14,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100566658] [2024-11-10 22:18:14,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:14,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:18:14,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:18:14,231 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:18:14,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 22:18:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:14,333 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:18:14,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:18:14,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:18:14,353 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:18:14,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:18:14,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100566658] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:18:14,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:18:14,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-10 22:18:14,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704847516] [2024-11-10 22:18:14,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:18:14,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 22:18:14,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:18:14,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 22:18:14,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-10 22:18:14,397 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 115 [2024-11-10 22:18:14,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 113 transitions, 364 flow. Second operand has 10 states, 10 states have (on average 57.0) internal successors, (570), 10 states have internal predecessors, (570), 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) [2024-11-10 22:18:14,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:18:14,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 115 [2024-11-10 22:18:14,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:18:14,696 INFO L124 PetriNetUnfolderBase]: 1021/2458 cut-off events. [2024-11-10 22:18:14,697 INFO L125 PetriNetUnfolderBase]: For 2070/2072 co-relation queries the response was YES. [2024-11-10 22:18:14,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5520 conditions, 2458 events. 1021/2458 cut-off events. For 2070/2072 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 17451 event pairs, 140 based on Foata normal form. 172/2565 useless extension candidates. Maximal degree in co-relation 5508. Up to 886 conditions per place. [2024-11-10 22:18:14,709 INFO L140 encePairwiseOnDemand]: 111/115 looper letters, 108 selfloop transitions, 5 changer transitions 0/148 dead transitions. [2024-11-10 22:18:14,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 148 transitions, 685 flow [2024-11-10 22:18:14,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 22:18:14,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 22:18:14,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 485 transitions. [2024-11-10 22:18:14,712 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6024844720496895 [2024-11-10 22:18:14,713 INFO L175 Difference]: Start difference. First operand has 115 places, 113 transitions, 364 flow. Second operand 7 states and 485 transitions. [2024-11-10 22:18:14,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 148 transitions, 685 flow [2024-11-10 22:18:14,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 148 transitions, 669 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-10 22:18:14,718 INFO L231 Difference]: Finished difference. Result has 89 places, 71 transitions, 221 flow [2024-11-10 22:18:14,718 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=221, PETRI_PLACES=89, PETRI_TRANSITIONS=71} [2024-11-10 22:18:14,720 INFO L277 CegarLoopForPetriNet]: 99 programPoint places, -10 predicate places. [2024-11-10 22:18:14,720 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 71 transitions, 221 flow [2024-11-10 22:18:14,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.0) internal successors, (570), 10 states have internal predecessors, (570), 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) [2024-11-10 22:18:14,720 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:14,720 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1] [2024-11-10 22:18:14,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 22:18:14,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:18:14,925 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-10 22:18:14,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:14,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1202401209, now seen corresponding path program 1 times [2024-11-10 22:18:14,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:14,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830204939] [2024-11-10 22:18:14,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:14,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:18:14,956 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:18:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:18:14,972 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:18:14,973 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 22:18:14,973 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2024-11-10 22:18:14,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2024-11-10 22:18:14,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2024-11-10 22:18:14,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2024-11-10 22:18:14,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2024-11-10 22:18:14,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2024-11-10 22:18:14,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2024-11-10 22:18:14,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2024-11-10 22:18:14,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2024-11-10 22:18:14,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2024-11-10 22:18:14,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2024-11-10 22:18:14,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2024-11-10 22:18:14,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2024-11-10 22:18:14,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2024-11-10 22:18:14,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2024-11-10 22:18:14,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2024-11-10 22:18:14,977 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2024-11-10 22:18:14,977 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2024-11-10 22:18:14,977 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2024-11-10 22:18:14,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 22:18:14,977 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:18:14,978 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 22:18:14,978 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-10 22:18:15,005 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 22:18:15,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 150 transitions, 327 flow [2024-11-10 22:18:15,026 INFO L124 PetriNetUnfolderBase]: 58/318 cut-off events. [2024-11-10 22:18:15,027 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-10 22:18:15,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343 conditions, 318 events. 58/318 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1316 event pairs, 1 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 218. Up to 16 conditions per place. [2024-11-10 22:18:15,029 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 150 transitions, 327 flow [2024-11-10 22:18:15,034 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 150 transitions, 327 flow [2024-11-10 22:18:15,035 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:18:15,036 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;@6a496c12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:18:15,036 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-11-10 22:18:15,038 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:18:15,039 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2024-11-10 22:18:15,039 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:18:15,040 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:15,040 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 22:18:15,040 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-10 22:18:15,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:15,040 INFO L85 PathProgramCache]: Analyzing trace with hash -226973337, now seen corresponding path program 1 times [2024-11-10 22:18:15,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:15,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504972182] [2024-11-10 22:18:15,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:15,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:15,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:18:15,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:18:15,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504972182] [2024-11-10 22:18:15,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504972182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:18:15,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:18:15,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:18:15,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997495014] [2024-11-10 22:18:15,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:18:15,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:18:15,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:18:15,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:18:15,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:18:15,097 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 150 [2024-11-10 22:18:15,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 150 transitions, 327 flow. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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) [2024-11-10 22:18:15,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:18:15,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 150 [2024-11-10 22:18:15,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:18:26,388 INFO L124 PetriNetUnfolderBase]: 93723/168473 cut-off events. [2024-11-10 22:18:26,389 INFO L125 PetriNetUnfolderBase]: For 1717/1717 co-relation queries the response was YES. [2024-11-10 22:18:26,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296679 conditions, 168473 events. 93723/168473 cut-off events. For 1717/1717 co-relation queries the response was YES. Maximal size of possible extension queue 3905. Compared 1804087 event pairs, 83355 based on Foata normal form. 56211/212628 useless extension candidates. Maximal degree in co-relation 151815. Up to 127044 conditions per place. [2024-11-10 22:18:27,515 INFO L140 encePairwiseOnDemand]: 122/150 looper letters, 79 selfloop transitions, 3 changer transitions 0/153 dead transitions. [2024-11-10 22:18:27,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 153 transitions, 497 flow [2024-11-10 22:18:27,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:18:27,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:18:27,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 404 transitions. [2024-11-10 22:18:27,517 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6733333333333333 [2024-11-10 22:18:27,517 INFO L175 Difference]: Start difference. First operand has 129 places, 150 transitions, 327 flow. Second operand 4 states and 404 transitions. [2024-11-10 22:18:27,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 153 transitions, 497 flow [2024-11-10 22:18:27,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 153 transitions, 497 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:18:27,524 INFO L231 Difference]: Finished difference. Result has 134 places, 130 transitions, 307 flow [2024-11-10 22:18:27,525 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=307, PETRI_PLACES=134, PETRI_TRANSITIONS=130} [2024-11-10 22:18:27,525 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, 5 predicate places. [2024-11-10 22:18:27,526 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 130 transitions, 307 flow [2024-11-10 22:18:27,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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) [2024-11-10 22:18:27,526 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:27,526 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 22:18:27,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 22:18:27,526 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-10 22:18:27,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:27,527 INFO L85 PathProgramCache]: Analyzing trace with hash 487782112, now seen corresponding path program 1 times [2024-11-10 22:18:27,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:27,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156603479] [2024-11-10 22:18:27,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:27,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:27,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:27,644 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:18:27,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:18:27,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156603479] [2024-11-10 22:18:27,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156603479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:18:27,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138857391] [2024-11-10 22:18:27,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:27,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:18:27,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:18:27,678 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:18:27,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 22:18:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:27,817 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:18:27,818 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:18:27,841 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:18:27,841 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:18:27,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138857391] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:18:27,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:18:27,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-10 22:18:27,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020835408] [2024-11-10 22:18:27,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:18:27,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:18:27,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:18:27,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:18:27,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:18:27,851 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 150 [2024-11-10 22:18:27,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 130 transitions, 307 flow. Second operand has 6 states, 6 states have (on average 72.5) internal successors, (435), 6 states have internal predecessors, (435), 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) [2024-11-10 22:18:27,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:18:27,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 150 [2024-11-10 22:18:27,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:18:38,386 INFO L124 PetriNetUnfolderBase]: 76961/149568 cut-off events. [2024-11-10 22:18:38,386 INFO L125 PetriNetUnfolderBase]: For 8881/8881 co-relation queries the response was YES. [2024-11-10 22:18:38,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261097 conditions, 149568 events. 76961/149568 cut-off events. For 8881/8881 co-relation queries the response was YES. Maximal size of possible extension queue 3328. Compared 1703657 event pairs, 10896 based on Foata normal form. 1872/136987 useless extension candidates. Maximal degree in co-relation 22099. Up to 63134 conditions per place. [2024-11-10 22:18:39,378 INFO L140 encePairwiseOnDemand]: 145/150 looper letters, 141 selfloop transitions, 6 changer transitions 0/218 dead transitions. [2024-11-10 22:18:39,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 218 transitions, 775 flow [2024-11-10 22:18:39,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:18:39,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:18:39,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 574 transitions. [2024-11-10 22:18:39,380 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6377777777777778 [2024-11-10 22:18:39,380 INFO L175 Difference]: Start difference. First operand has 134 places, 130 transitions, 307 flow. Second operand 6 states and 574 transitions. [2024-11-10 22:18:39,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 218 transitions, 775 flow [2024-11-10 22:18:39,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 218 transitions, 773 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:18:39,607 INFO L231 Difference]: Finished difference. Result has 137 places, 129 transitions, 313 flow [2024-11-10 22:18:39,607 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=313, PETRI_PLACES=137, PETRI_TRANSITIONS=129} [2024-11-10 22:18:39,608 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, 8 predicate places. [2024-11-10 22:18:39,608 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 129 transitions, 313 flow [2024-11-10 22:18:39,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.5) internal successors, (435), 6 states have internal predecessors, (435), 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) [2024-11-10 22:18:39,609 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:39,609 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:18:39,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 22:18:39,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-10 22:18:39,810 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-10 22:18:39,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:39,811 INFO L85 PathProgramCache]: Analyzing trace with hash -2035620828, now seen corresponding path program 1 times [2024-11-10 22:18:39,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:39,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172581946] [2024-11-10 22:18:39,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:39,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:39,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:39,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:18:39,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:18:39,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172581946] [2024-11-10 22:18:39,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172581946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:18:39,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:18:39,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:18:39,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107224714] [2024-11-10 22:18:39,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:18:39,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:18:39,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:18:39,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:18:39,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:18:39,857 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 150 [2024-11-10 22:18:39,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 129 transitions, 313 flow. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 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) [2024-11-10 22:18:39,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:18:39,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 150 [2024-11-10 22:18:39,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand