./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/unroll-cond-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/unroll-cond-3.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9fb4c28a8a216c266c6ae14d377c8e26c68bb16bf7c2fe2809f039d12d6c4b55 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:42:57,096 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:42:57,145 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 03:42:57,152 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:42:57,153 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:42:57,180 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:42:57,180 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:42:57,181 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:42:57,181 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:42:57,182 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:42:57,182 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:42:57,183 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:42:57,183 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:42:57,184 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:42:57,185 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:42:57,185 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:42:57,186 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:42:57,186 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:42:57,186 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:42:57,186 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:42:57,190 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:42:57,191 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:42:57,191 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:42:57,191 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:42:57,191 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:42:57,191 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:42:57,191 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:42:57,192 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:42:57,192 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:42:57,192 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:42:57,192 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:42:57,192 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:42:57,192 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:42:57,193 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:42:57,193 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:42:57,193 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:42:57,194 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 03:42:57,194 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 03:42:57,194 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:42:57,195 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:42:57,195 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:42:57,195 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:42:57,196 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fb4c28a8a216c266c6ae14d377c8e26c68bb16bf7c2fe2809f039d12d6c4b55 [2024-11-17 03:42:57,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:42:57,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:42:57,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:42:57,434 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:42:57,434 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:42:57,435 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/unroll-cond-3.wvr.c [2024-11-17 03:42:58,789 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:42:58,950 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:42:58,953 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-3.wvr.c [2024-11-17 03:42:58,962 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b77999835/5d0eba737e054d8da30c9d775b4458e6/FLAGd9788dad5 [2024-11-17 03:42:58,976 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b77999835/5d0eba737e054d8da30c9d775b4458e6 [2024-11-17 03:42:58,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:42:58,981 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:42:58,983 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:42:58,984 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:42:58,988 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:42:58,989 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:42:58" (1/1) ... [2024-11-17 03:42:58,990 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eec7ab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:42:58, skipping insertion in model container [2024-11-17 03:42:58,991 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:42:58" (1/1) ... [2024-11-17 03:42:59,015 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:42:59,186 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 03:42:59,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:42:59,195 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:42:59,212 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:42:59,226 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:42:59,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:42:59 WrapperNode [2024-11-17 03:42:59,227 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:42:59,228 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:42:59,228 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:42:59,228 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:42:59,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:42:59" (1/1) ... [2024-11-17 03:42:59,241 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:42:59" (1/1) ... [2024-11-17 03:42:59,257 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 154 [2024-11-17 03:42:59,258 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:42:59,258 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:42:59,259 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:42:59,259 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:42:59,267 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:42:59" (1/1) ... [2024-11-17 03:42:59,267 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:42:59" (1/1) ... [2024-11-17 03:42:59,269 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:42:59" (1/1) ... [2024-11-17 03:42:59,280 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-17 03:42:59,281 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:42:59" (1/1) ... [2024-11-17 03:42:59,281 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:42:59" (1/1) ... [2024-11-17 03:42:59,286 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:42:59" (1/1) ... [2024-11-17 03:42:59,286 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:42:59" (1/1) ... [2024-11-17 03:42:59,288 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:42:59" (1/1) ... [2024-11-17 03:42:59,288 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:42:59" (1/1) ... [2024-11-17 03:42:59,290 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:42:59,291 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:42:59,291 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:42:59,291 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:42:59,292 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:42:59" (1/1) ... [2024-11-17 03:42:59,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:42:59,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:42:59,324 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-17 03:42:59,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-17 03:42:59,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:42:59,413 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-17 03:42:59,413 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-17 03:42:59,413 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-17 03:42:59,414 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-17 03:42:59,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 03:42:59,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 03:42:59,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 03:42:59,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 03:42:59,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 03:42:59,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:42:59,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:42:59,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 03:42:59,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 03:42:59,416 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 03:42:59,512 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:42:59,514 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:42:59,787 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:42:59,788 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:42:59,952 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:42:59,952 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:42:59,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:42:59 BoogieIcfgContainer [2024-11-17 03:42:59,953 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:42:59,955 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:42:59,955 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:42:59,958 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:42:59,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:42:58" (1/3) ... [2024-11-17 03:42:59,959 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57fb2756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:42:59, skipping insertion in model container [2024-11-17 03:42:59,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:42:59" (2/3) ... [2024-11-17 03:42:59,960 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57fb2756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:42:59, skipping insertion in model container [2024-11-17 03:42:59,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:42:59" (3/3) ... [2024-11-17 03:42:59,961 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-3.wvr.c [2024-11-17 03:42:59,975 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:42:59,975 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-11-17 03:42:59,975 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:43:00,023 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-17 03:43:00,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 56 transitions, 126 flow [2024-11-17 03:43:00,080 INFO L124 PetriNetUnfolderBase]: 8/54 cut-off events. [2024-11-17 03:43:00,081 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 03:43:00,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 54 events. 8/54 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 126 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-11-17 03:43:00,084 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 56 transitions, 126 flow [2024-11-17 03:43:00,087 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 53 transitions, 118 flow [2024-11-17 03:43:00,094 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:43:00,099 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=None, 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;@122f5baa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:43:00,099 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2024-11-17 03:43:00,102 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:43:00,102 INFO L124 PetriNetUnfolderBase]: 2/7 cut-off events. [2024-11-17 03:43:00,102 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:43:00,103 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:00,103 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:43:00,104 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-17 03:43:00,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:00,108 INFO L85 PathProgramCache]: Analyzing trace with hash 14375948, now seen corresponding path program 1 times [2024-11-17 03:43:00,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:00,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580589277] [2024-11-17 03:43:00,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:00,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:00,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:00,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:00,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:00,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580589277] [2024-11-17 03:43:00,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580589277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:43:00,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:43:00,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:43:00,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554710415] [2024-11-17 03:43:00,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:43:00,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:43:00,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:00,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:43:00,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:43:00,374 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 56 [2024-11-17 03:43:00,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 53 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:00,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:00,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 56 [2024-11-17 03:43:00,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:00,509 INFO L124 PetriNetUnfolderBase]: 133/344 cut-off events. [2024-11-17 03:43:00,509 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-17 03:43:00,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 344 events. 133/344 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1874 event pairs, 86 based on Foata normal form. 29/324 useless extension candidates. Maximal degree in co-relation 512. Up to 217 conditions per place. [2024-11-17 03:43:00,516 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 23 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2024-11-17 03:43:00,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 47 transitions, 156 flow [2024-11-17 03:43:00,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:43:00,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:43:00,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-11-17 03:43:00,526 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-17 03:43:00,528 INFO L175 Difference]: Start difference. First operand has 52 places, 53 transitions, 118 flow. Second operand 3 states and 105 transitions. [2024-11-17 03:43:00,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 47 transitions, 156 flow [2024-11-17 03:43:00,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 47 transitions, 148 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 03:43:00,532 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 102 flow [2024-11-17 03:43:00,534 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2024-11-17 03:43:00,536 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -5 predicate places. [2024-11-17 03:43:00,537 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 102 flow [2024-11-17 03:43:00,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:00,537 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:00,537 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:43:00,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 03:43:00,538 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-17 03:43:00,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:00,538 INFO L85 PathProgramCache]: Analyzing trace with hash 14375949, now seen corresponding path program 1 times [2024-11-17 03:43:00,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:00,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761693260] [2024-11-17 03:43:00,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:00,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:00,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:00,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:00,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761693260] [2024-11-17 03:43:00,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761693260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:43:00,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:43:00,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:43:00,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524286019] [2024-11-17 03:43:00,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:43:00,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:43:00,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:00,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:43:00,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:43:00,876 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 56 [2024-11-17 03:43:00,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:00,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:00,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 56 [2024-11-17 03:43:00,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:01,003 INFO L124 PetriNetUnfolderBase]: 133/347 cut-off events. [2024-11-17 03:43:01,003 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-17 03:43:01,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 580 conditions, 347 events. 133/347 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1874 event pairs, 86 based on Foata normal form. 0/296 useless extension candidates. Maximal degree in co-relation 557. Up to 222 conditions per place. [2024-11-17 03:43:01,007 INFO L140 encePairwiseOnDemand]: 52/56 looper letters, 27 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2024-11-17 03:43:01,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 49 transitions, 164 flow [2024-11-17 03:43:01,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:43:01,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:43:01,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-11-17 03:43:01,009 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6130952380952381 [2024-11-17 03:43:01,010 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 102 flow. Second operand 3 states and 103 transitions. [2024-11-17 03:43:01,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 49 transitions, 164 flow [2024-11-17 03:43:01,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 49 transitions, 160 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:43:01,012 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 112 flow [2024-11-17 03:43:01,012 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2024-11-17 03:43:01,015 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -4 predicate places. [2024-11-17 03:43:01,015 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 112 flow [2024-11-17 03:43:01,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:01,016 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:01,016 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-17 03:43:01,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 03:43:01,016 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-17 03:43:01,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:01,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1222369389, now seen corresponding path program 1 times [2024-11-17 03:43:01,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:01,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978531675] [2024-11-17 03:43:01,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:01,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:01,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:01,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:01,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978531675] [2024-11-17 03:43:01,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978531675] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:43:01,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125136153] [2024-11-17 03:43:01,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:01,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:43:01,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:43:01,233 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:43:01,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 03:43:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:01,294 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-17 03:43:01,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:43:01,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-17 03:43:01,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:01,541 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:43:01,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:01,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125136153] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:43:01,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:43:01,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-17 03:43:01,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454558961] [2024-11-17 03:43:01,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:43:01,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-17 03:43:01,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:01,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-17 03:43:01,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-17 03:43:01,858 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 56 [2024-11-17 03:43:01,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 112 flow. Second operand has 11 states, 11 states have (on average 25.363636363636363) internal successors, (279), 11 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:01,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:01,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 56 [2024-11-17 03:43:01,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:02,061 INFO L124 PetriNetUnfolderBase]: 133/346 cut-off events. [2024-11-17 03:43:02,062 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-17 03:43:02,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 582 conditions, 346 events. 133/346 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1884 event pairs, 86 based on Foata normal form. 0/297 useless extension candidates. Maximal degree in co-relation 568. Up to 217 conditions per place. [2024-11-17 03:43:02,066 INFO L140 encePairwiseOnDemand]: 51/56 looper letters, 23 selfloop transitions, 5 changer transitions 0/48 dead transitions. [2024-11-17 03:43:02,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 48 transitions, 166 flow [2024-11-17 03:43:02,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:43:02,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:43:02,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 149 transitions. [2024-11-17 03:43:02,070 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5321428571428571 [2024-11-17 03:43:02,071 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 112 flow. Second operand 5 states and 149 transitions. [2024-11-17 03:43:02,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 48 transitions, 166 flow [2024-11-17 03:43:02,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 48 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:43:02,072 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 124 flow [2024-11-17 03:43:02,072 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=124, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2024-11-17 03:43:02,073 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -1 predicate places. [2024-11-17 03:43:02,073 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 124 flow [2024-11-17 03:43:02,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 25.363636363636363) internal successors, (279), 11 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:02,075 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:02,076 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:02,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 03:43:02,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:43:02,281 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-17 03:43:02,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:02,282 INFO L85 PathProgramCache]: Analyzing trace with hash 129345541, now seen corresponding path program 1 times [2024-11-17 03:43:02,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:02,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068562068] [2024-11-17 03:43:02,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:02,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:02,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:02,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:02,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068562068] [2024-11-17 03:43:02,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068562068] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:43:02,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:43:02,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:43:02,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059321645] [2024-11-17 03:43:02,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:43:02,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:43:02,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:02,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:43:02,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:43:02,419 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 56 [2024-11-17 03:43:02,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:02,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:02,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 56 [2024-11-17 03:43:02,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:02,497 INFO L124 PetriNetUnfolderBase]: 133/304 cut-off events. [2024-11-17 03:43:02,497 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-17 03:43:02,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 304 events. 133/304 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1414 event pairs, 86 based on Foata normal form. 0/297 useless extension candidates. Maximal degree in co-relation 519. Up to 216 conditions per place. [2024-11-17 03:43:02,499 INFO L140 encePairwiseOnDemand]: 48/56 looper letters, 25 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2024-11-17 03:43:02,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 42 transitions, 166 flow [2024-11-17 03:43:02,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:43:02,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:43:02,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-11-17 03:43:02,500 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47767857142857145 [2024-11-17 03:43:02,500 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 124 flow. Second operand 4 states and 107 transitions. [2024-11-17 03:43:02,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 42 transitions, 166 flow [2024-11-17 03:43:02,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 42 transitions, 160 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-17 03:43:02,502 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 110 flow [2024-11-17 03:43:02,502 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2024-11-17 03:43:02,503 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -6 predicate places. [2024-11-17 03:43:02,503 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 110 flow [2024-11-17 03:43:02,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:02,504 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:02,504 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:02,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 03:43:02,504 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-17 03:43:02,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:02,505 INFO L85 PathProgramCache]: Analyzing trace with hash 129345542, now seen corresponding path program 1 times [2024-11-17 03:43:02,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:02,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129169219] [2024-11-17 03:43:02,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:02,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:02,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:02,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:02,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:02,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129169219] [2024-11-17 03:43:02,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129169219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:43:02,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863668180] [2024-11-17 03:43:02,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:02,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:43:02,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:43:02,623 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:43:02,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 03:43:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:02,677 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-17 03:43:02,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:43:02,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:02,754 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:43:02,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-17 03:43:02,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:02,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863668180] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:43:02,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:43:02,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-17 03:43:02,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817747363] [2024-11-17 03:43:02,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:43:02,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-17 03:43:02,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:02,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-17 03:43:02,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-17 03:43:03,011 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 56 [2024-11-17 03:43:03,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 110 flow. Second operand has 11 states, 11 states have (on average 27.181818181818183) internal successors, (299), 11 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) [2024-11-17 03:43:03,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:03,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 56 [2024-11-17 03:43:03,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:03,157 INFO L124 PetriNetUnfolderBase]: 298/604 cut-off events. [2024-11-17 03:43:03,158 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-17 03:43:03,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1106 conditions, 604 events. 298/604 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3228 event pairs, 100 based on Foata normal form. 0/563 useless extension candidates. Maximal degree in co-relation 1079. Up to 275 conditions per place. [2024-11-17 03:43:03,160 INFO L140 encePairwiseOnDemand]: 51/56 looper letters, 43 selfloop transitions, 4 changer transitions 0/61 dead transitions. [2024-11-17 03:43:03,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 61 transitions, 245 flow [2024-11-17 03:43:03,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:43:03,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:43:03,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 173 transitions. [2024-11-17 03:43:03,161 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6178571428571429 [2024-11-17 03:43:03,161 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 110 flow. Second operand 5 states and 173 transitions. [2024-11-17 03:43:03,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 61 transitions, 245 flow [2024-11-17 03:43:03,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 61 transitions, 242 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:43:03,163 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 123 flow [2024-11-17 03:43:03,163 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2024-11-17 03:43:03,163 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -3 predicate places. [2024-11-17 03:43:03,163 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 123 flow [2024-11-17 03:43:03,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 27.181818181818183) internal successors, (299), 11 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) [2024-11-17 03:43:03,164 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:03,164 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:03,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 03:43:03,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:43:03,366 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-17 03:43:03,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:03,367 INFO L85 PathProgramCache]: Analyzing trace with hash -820784351, now seen corresponding path program 1 times [2024-11-17 03:43:03,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:03,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601582606] [2024-11-17 03:43:03,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:03,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:03,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:03,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:03,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601582606] [2024-11-17 03:43:03,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601582606] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:43:03,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302039993] [2024-11-17 03:43:03,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:03,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:43:03,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:43:03,482 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) [2024-11-17 03:43:03,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 03:43:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:03,534 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-17 03:43:03,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:43:03,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:03,648 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:43:03,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-17 03:43:03,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:03,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302039993] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:43:03,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:43:03,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-17 03:43:03,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817944208] [2024-11-17 03:43:03,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:43:03,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-17 03:43:03,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:03,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-17 03:43:03,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-17 03:43:03,973 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 56 [2024-11-17 03:43:03,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 123 flow. Second operand has 11 states, 11 states have (on average 23.727272727272727) internal successors, (261), 11 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:03,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:03,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 56 [2024-11-17 03:43:03,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:04,173 INFO L124 PetriNetUnfolderBase]: 540/1004 cut-off events. [2024-11-17 03:43:04,173 INFO L125 PetriNetUnfolderBase]: For 110/134 co-relation queries the response was YES. [2024-11-17 03:43:04,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2026 conditions, 1004 events. 540/1004 cut-off events. For 110/134 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5546 event pairs, 123 based on Foata normal form. 0/905 useless extension candidates. Maximal degree in co-relation 1997. Up to 599 conditions per place. [2024-11-17 03:43:04,179 INFO L140 encePairwiseOnDemand]: 47/56 looper letters, 43 selfloop transitions, 6 changer transitions 0/59 dead transitions. [2024-11-17 03:43:04,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 59 transitions, 260 flow [2024-11-17 03:43:04,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:43:04,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:43:04,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-11-17 03:43:04,180 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2024-11-17 03:43:04,180 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 123 flow. Second operand 5 states and 155 transitions. [2024-11-17 03:43:04,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 59 transitions, 260 flow [2024-11-17 03:43:04,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 59 transitions, 253 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:43:04,184 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 151 flow [2024-11-17 03:43:04,184 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=151, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2024-11-17 03:43:04,186 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -1 predicate places. [2024-11-17 03:43:04,186 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 151 flow [2024-11-17 03:43:04,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.727272727272727) internal successors, (261), 11 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:04,186 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:04,187 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:04,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-17 03:43:04,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:43:04,388 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-17 03:43:04,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:04,388 INFO L85 PathProgramCache]: Analyzing trace with hash 325489405, now seen corresponding path program 1 times [2024-11-17 03:43:04,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:04,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164141810] [2024-11-17 03:43:04,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:04,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:04,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:04,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:04,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164141810] [2024-11-17 03:43:04,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164141810] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:43:04,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493598696] [2024-11-17 03:43:04,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:04,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:43:04,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:43:04,618 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) [2024-11-17 03:43:04,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 03:43:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:04,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-17 03:43:04,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:43:04,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:04,838 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:43:04,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-17 03:43:05,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:05,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493598696] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:43:05,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:43:05,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-17 03:43:05,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746951260] [2024-11-17 03:43:05,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:43:05,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-17 03:43:05,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:05,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-17 03:43:05,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-11-17 03:43:05,754 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 56 [2024-11-17 03:43:05,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 151 flow. Second operand has 17 states, 17 states have (on average 22.11764705882353) internal successors, (376), 17 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:05,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:05,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 56 [2024-11-17 03:43:05,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:06,179 INFO L124 PetriNetUnfolderBase]: 656/1235 cut-off events. [2024-11-17 03:43:06,180 INFO L125 PetriNetUnfolderBase]: For 136/170 co-relation queries the response was YES. [2024-11-17 03:43:06,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2678 conditions, 1235 events. 656/1235 cut-off events. For 136/170 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7167 event pairs, 120 based on Foata normal form. 0/1200 useless extension candidates. Maximal degree in co-relation 1666. Up to 375 conditions per place. [2024-11-17 03:43:06,186 INFO L140 encePairwiseOnDemand]: 40/56 looper letters, 50 selfloop transitions, 22 changer transitions 0/81 dead transitions. [2024-11-17 03:43:06,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 81 transitions, 402 flow [2024-11-17 03:43:06,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-17 03:43:06,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-17 03:43:06,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 292 transitions. [2024-11-17 03:43:06,205 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.474025974025974 [2024-11-17 03:43:06,206 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 151 flow. Second operand 11 states and 292 transitions. [2024-11-17 03:43:06,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 81 transitions, 402 flow [2024-11-17 03:43:06,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 81 transitions, 390 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:43:06,208 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 221 flow [2024-11-17 03:43:06,208 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=221, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2024-11-17 03:43:06,209 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2024-11-17 03:43:06,209 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 221 flow [2024-11-17 03:43:06,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 22.11764705882353) internal successors, (376), 17 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:06,209 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:06,210 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:06,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-17 03:43:06,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:43:06,416 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-17 03:43:06,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:06,417 INFO L85 PathProgramCache]: Analyzing trace with hash 747858915, now seen corresponding path program 1 times [2024-11-17 03:43:06,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:06,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147434572] [2024-11-17 03:43:06,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:06,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:06,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:06,597 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:43:06,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:06,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147434572] [2024-11-17 03:43:06,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147434572] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:43:06,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325235049] [2024-11-17 03:43:06,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:06,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:43:06,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:43:06,600 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) [2024-11-17 03:43:06,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 03:43:06,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:06,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-17 03:43:06,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:43:06,790 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:06,790 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:43:06,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2024-11-17 03:43:06,995 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:06,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325235049] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:43:06,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:43:06,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 17 [2024-11-17 03:43:06,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571879480] [2024-11-17 03:43:06,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:43:06,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-17 03:43:06,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:06,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-17 03:43:06,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2024-11-17 03:43:07,491 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 56 [2024-11-17 03:43:07,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 221 flow. Second operand has 19 states, 19 states have (on average 25.736842105263158) internal successors, (489), 19 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:07,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:07,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 56 [2024-11-17 03:43:07,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:07,992 INFO L124 PetriNetUnfolderBase]: 875/1630 cut-off events. [2024-11-17 03:43:07,992 INFO L125 PetriNetUnfolderBase]: For 445/445 co-relation queries the response was YES. [2024-11-17 03:43:07,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3782 conditions, 1630 events. 875/1630 cut-off events. For 445/445 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 9748 event pairs, 276 based on Foata normal form. 0/1615 useless extension candidates. Maximal degree in co-relation 1990. Up to 489 conditions per place. [2024-11-17 03:43:07,999 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 115 selfloop transitions, 19 changer transitions 0/142 dead transitions. [2024-11-17 03:43:07,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 142 transitions, 804 flow [2024-11-17 03:43:08,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-17 03:43:08,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-17 03:43:08,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 422 transitions. [2024-11-17 03:43:08,001 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5796703296703297 [2024-11-17 03:43:08,001 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 221 flow. Second operand 13 states and 422 transitions. [2024-11-17 03:43:08,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 142 transitions, 804 flow [2024-11-17 03:43:08,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 142 transitions, 799 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-17 03:43:08,004 INFO L231 Difference]: Finished difference. Result has 65 places, 58 transitions, 287 flow [2024-11-17 03:43:08,005 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=287, PETRI_PLACES=65, PETRI_TRANSITIONS=58} [2024-11-17 03:43:08,005 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 13 predicate places. [2024-11-17 03:43:08,005 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 58 transitions, 287 flow [2024-11-17 03:43:08,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 25.736842105263158) internal successors, (489), 19 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:08,006 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:08,006 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:08,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-17 03:43:08,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:43:08,207 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-17 03:43:08,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:08,207 INFO L85 PathProgramCache]: Analyzing trace with hash 2069092597, now seen corresponding path program 1 times [2024-11-17 03:43:08,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:08,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394287341] [2024-11-17 03:43:08,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:08,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:08,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:43:08,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:08,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394287341] [2024-11-17 03:43:08,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394287341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:43:08,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:43:08,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:43:08,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348779355] [2024-11-17 03:43:08,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:43:08,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:43:08,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:08,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:43:08,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:43:08,250 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 56 [2024-11-17 03:43:08,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 58 transitions, 287 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:08,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:08,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 56 [2024-11-17 03:43:08,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:08,395 INFO L124 PetriNetUnfolderBase]: 887/1644 cut-off events. [2024-11-17 03:43:08,395 INFO L125 PetriNetUnfolderBase]: For 873/873 co-relation queries the response was YES. [2024-11-17 03:43:08,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4148 conditions, 1644 events. 887/1644 cut-off events. For 873/873 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 9953 event pairs, 240 based on Foata normal form. 2/1613 useless extension candidates. Maximal degree in co-relation 2208. Up to 1131 conditions per place. [2024-11-17 03:43:08,401 INFO L140 encePairwiseOnDemand]: 50/56 looper letters, 63 selfloop transitions, 8 changer transitions 1/82 dead transitions. [2024-11-17 03:43:08,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 82 transitions, 530 flow [2024-11-17 03:43:08,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:43:08,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:43:08,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-11-17 03:43:08,402 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7202380952380952 [2024-11-17 03:43:08,402 INFO L175 Difference]: Start difference. First operand has 65 places, 58 transitions, 287 flow. Second operand 3 states and 121 transitions. [2024-11-17 03:43:08,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 82 transitions, 530 flow [2024-11-17 03:43:08,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 82 transitions, 504 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-17 03:43:08,405 INFO L231 Difference]: Finished difference. Result has 61 places, 65 transitions, 343 flow [2024-11-17 03:43:08,405 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=343, PETRI_PLACES=61, PETRI_TRANSITIONS=65} [2024-11-17 03:43:08,407 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2024-11-17 03:43:08,407 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 65 transitions, 343 flow [2024-11-17 03:43:08,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:08,407 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:08,407 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:08,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 03:43:08,407 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-17 03:43:08,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:08,408 INFO L85 PathProgramCache]: Analyzing trace with hash 939847122, now seen corresponding path program 1 times [2024-11-17 03:43:08,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:08,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721948791] [2024-11-17 03:43:08,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:08,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:08,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:43:08,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:08,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721948791] [2024-11-17 03:43:08,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721948791] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:43:08,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:43:08,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 03:43:08,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164606535] [2024-11-17 03:43:08,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:43:08,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:43:08,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:08,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:43:08,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:43:08,500 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 56 [2024-11-17 03:43:08,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 65 transitions, 343 flow. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:08,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:08,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 56 [2024-11-17 03:43:08,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:08,741 INFO L124 PetriNetUnfolderBase]: 1285/2290 cut-off events. [2024-11-17 03:43:08,742 INFO L125 PetriNetUnfolderBase]: For 1262/1262 co-relation queries the response was YES. [2024-11-17 03:43:08,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5902 conditions, 2290 events. 1285/2290 cut-off events. For 1262/1262 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 13824 event pairs, 460 based on Foata normal form. 30/2316 useless extension candidates. Maximal degree in co-relation 3123. Up to 1152 conditions per place. [2024-11-17 03:43:08,751 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 111 selfloop transitions, 8 changer transitions 0/126 dead transitions. [2024-11-17 03:43:08,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 126 transitions, 864 flow [2024-11-17 03:43:08,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:43:08,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:43:08,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 186 transitions. [2024-11-17 03:43:08,753 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6642857142857143 [2024-11-17 03:43:08,753 INFO L175 Difference]: Start difference. First operand has 61 places, 65 transitions, 343 flow. Second operand 5 states and 186 transitions. [2024-11-17 03:43:08,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 126 transitions, 864 flow [2024-11-17 03:43:08,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 126 transitions, 845 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:43:08,756 INFO L231 Difference]: Finished difference. Result has 67 places, 68 transitions, 384 flow [2024-11-17 03:43:08,756 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=384, PETRI_PLACES=67, PETRI_TRANSITIONS=68} [2024-11-17 03:43:08,757 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 15 predicate places. [2024-11-17 03:43:08,757 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 68 transitions, 384 flow [2024-11-17 03:43:08,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:08,757 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:08,758 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:08,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 03:43:08,758 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-17 03:43:08,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:08,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1271111534, now seen corresponding path program 2 times [2024-11-17 03:43:08,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:08,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990650761] [2024-11-17 03:43:08,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:08,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:08,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:43:08,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:08,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990650761] [2024-11-17 03:43:08,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990650761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:43:08,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:43:08,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 03:43:08,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193143136] [2024-11-17 03:43:08,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:43:08,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:43:08,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:08,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:43:08,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:43:08,943 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 56 [2024-11-17 03:43:08,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 68 transitions, 384 flow. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:08,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:08,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 56 [2024-11-17 03:43:08,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:09,110 INFO L124 PetriNetUnfolderBase]: 945/1691 cut-off events. [2024-11-17 03:43:09,110 INFO L125 PetriNetUnfolderBase]: For 1335/1337 co-relation queries the response was YES. [2024-11-17 03:43:09,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4729 conditions, 1691 events. 945/1691 cut-off events. For 1335/1337 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 9648 event pairs, 443 based on Foata normal form. 32/1715 useless extension candidates. Maximal degree in co-relation 2492. Up to 1216 conditions per place. [2024-11-17 03:43:09,119 INFO L140 encePairwiseOnDemand]: 51/56 looper letters, 71 selfloop transitions, 10 changer transitions 0/89 dead transitions. [2024-11-17 03:43:09,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 89 transitions, 621 flow [2024-11-17 03:43:09,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:43:09,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:43:09,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 138 transitions. [2024-11-17 03:43:09,120 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6160714285714286 [2024-11-17 03:43:09,120 INFO L175 Difference]: Start difference. First operand has 67 places, 68 transitions, 384 flow. Second operand 4 states and 138 transitions. [2024-11-17 03:43:09,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 89 transitions, 621 flow [2024-11-17 03:43:09,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 89 transitions, 596 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-17 03:43:09,124 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 361 flow [2024-11-17 03:43:09,124 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=361, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2024-11-17 03:43:09,125 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 18 predicate places. [2024-11-17 03:43:09,125 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 361 flow [2024-11-17 03:43:09,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:09,125 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:09,125 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:09,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-17 03:43:09,126 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-17 03:43:09,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:09,126 INFO L85 PathProgramCache]: Analyzing trace with hash -472654601, now seen corresponding path program 1 times [2024-11-17 03:43:09,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:09,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167911110] [2024-11-17 03:43:09,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:09,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:09,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:43:09,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:09,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167911110] [2024-11-17 03:43:09,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167911110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:43:09,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:43:09,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 03:43:09,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462272139] [2024-11-17 03:43:09,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:43:09,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 03:43:09,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:09,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 03:43:09,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-17 03:43:09,277 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-17 03:43:09,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 361 flow. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:09,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:09,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-17 03:43:09,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:09,576 INFO L124 PetriNetUnfolderBase]: 1279/2274 cut-off events. [2024-11-17 03:43:09,576 INFO L125 PetriNetUnfolderBase]: For 2894/2894 co-relation queries the response was YES. [2024-11-17 03:43:09,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6924 conditions, 2274 events. 1279/2274 cut-off events. For 2894/2894 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 13631 event pairs, 395 based on Foata normal form. 24/2294 useless extension candidates. Maximal degree in co-relation 4009. Up to 1018 conditions per place. [2024-11-17 03:43:09,589 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 109 selfloop transitions, 18 changer transitions 0/133 dead transitions. [2024-11-17 03:43:09,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 133 transitions, 956 flow [2024-11-17 03:43:09,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 03:43:09,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 03:43:09,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 213 transitions. [2024-11-17 03:43:09,591 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6339285714285714 [2024-11-17 03:43:09,591 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 361 flow. Second operand 6 states and 213 transitions. [2024-11-17 03:43:09,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 133 transitions, 956 flow [2024-11-17 03:43:09,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 133 transitions, 921 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-17 03:43:09,601 INFO L231 Difference]: Finished difference. Result has 77 places, 74 transitions, 505 flow [2024-11-17 03:43:09,601 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=505, PETRI_PLACES=77, PETRI_TRANSITIONS=74} [2024-11-17 03:43:09,602 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 25 predicate places. [2024-11-17 03:43:09,602 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 74 transitions, 505 flow [2024-11-17 03:43:09,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:09,602 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:09,602 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:09,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-17 03:43:09,602 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-17 03:43:09,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:09,603 INFO L85 PathProgramCache]: Analyzing trace with hash -76267041, now seen corresponding path program 2 times [2024-11-17 03:43:09,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:09,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132465171] [2024-11-17 03:43:09,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:09,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:09,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:09,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:43:09,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:09,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132465171] [2024-11-17 03:43:09,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132465171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:43:09,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:43:09,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 03:43:09,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111368844] [2024-11-17 03:43:09,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:43:09,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 03:43:09,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:09,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 03:43:09,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-17 03:43:09,743 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-17 03:43:09,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 74 transitions, 505 flow. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:09,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:09,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-17 03:43:09,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:10,080 INFO L124 PetriNetUnfolderBase]: 1573/2775 cut-off events. [2024-11-17 03:43:10,080 INFO L125 PetriNetUnfolderBase]: For 4945/4945 co-relation queries the response was YES. [2024-11-17 03:43:10,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9025 conditions, 2775 events. 1573/2775 cut-off events. For 4945/4945 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 16729 event pairs, 607 based on Foata normal form. 24/2787 useless extension candidates. Maximal degree in co-relation 6216. Up to 1366 conditions per place. [2024-11-17 03:43:10,092 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 114 selfloop transitions, 23 changer transitions 0/143 dead transitions. [2024-11-17 03:43:10,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 143 transitions, 1138 flow [2024-11-17 03:43:10,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 03:43:10,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 03:43:10,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 229 transitions. [2024-11-17 03:43:10,094 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5841836734693877 [2024-11-17 03:43:10,094 INFO L175 Difference]: Start difference. First operand has 77 places, 74 transitions, 505 flow. Second operand 7 states and 229 transitions. [2024-11-17 03:43:10,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 143 transitions, 1138 flow [2024-11-17 03:43:10,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 143 transitions, 1106 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-17 03:43:10,102 INFO L231 Difference]: Finished difference. Result has 86 places, 82 transitions, 652 flow [2024-11-17 03:43:10,103 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=652, PETRI_PLACES=86, PETRI_TRANSITIONS=82} [2024-11-17 03:43:10,103 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 34 predicate places. [2024-11-17 03:43:10,103 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 82 transitions, 652 flow [2024-11-17 03:43:10,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:10,104 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:10,104 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:10,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-17 03:43:10,104 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-17 03:43:10,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:10,105 INFO L85 PathProgramCache]: Analyzing trace with hash 101925183, now seen corresponding path program 3 times [2024-11-17 03:43:10,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:10,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466493490] [2024-11-17 03:43:10,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:10,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:10,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:43:10,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:10,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466493490] [2024-11-17 03:43:10,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466493490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:43:10,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:43:10,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 03:43:10,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29310107] [2024-11-17 03:43:10,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:43:10,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:43:10,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:10,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:43:10,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:43:10,263 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-17 03:43:10,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 82 transitions, 652 flow. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:10,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:10,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-17 03:43:10,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:10,525 INFO L124 PetriNetUnfolderBase]: 1523/2680 cut-off events. [2024-11-17 03:43:10,526 INFO L125 PetriNetUnfolderBase]: For 7613/7621 co-relation queries the response was YES. [2024-11-17 03:43:10,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9234 conditions, 2680 events. 1523/2680 cut-off events. For 7613/7621 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 16085 event pairs, 570 based on Foata normal form. 10/2686 useless extension candidates. Maximal degree in co-relation 8266. Up to 1262 conditions per place. [2024-11-17 03:43:10,548 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 99 selfloop transitions, 25 changer transitions 0/130 dead transitions. [2024-11-17 03:43:10,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 130 transitions, 1146 flow [2024-11-17 03:43:10,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:43:10,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:43:10,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 179 transitions. [2024-11-17 03:43:10,549 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6392857142857142 [2024-11-17 03:43:10,550 INFO L175 Difference]: Start difference. First operand has 86 places, 82 transitions, 652 flow. Second operand 5 states and 179 transitions. [2024-11-17 03:43:10,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 130 transitions, 1146 flow [2024-11-17 03:43:10,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 130 transitions, 1104 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-17 03:43:10,563 INFO L231 Difference]: Finished difference. Result has 89 places, 84 transitions, 712 flow [2024-11-17 03:43:10,563 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=712, PETRI_PLACES=89, PETRI_TRANSITIONS=84} [2024-11-17 03:43:10,563 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 37 predicate places. [2024-11-17 03:43:10,563 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 84 transitions, 712 flow [2024-11-17 03:43:10,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:10,563 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:10,563 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:10,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-17 03:43:10,564 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-17 03:43:10,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:10,564 INFO L85 PathProgramCache]: Analyzing trace with hash -513246545, now seen corresponding path program 4 times [2024-11-17 03:43:10,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:10,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740838228] [2024-11-17 03:43:10,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:10,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:10,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:43:10,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:10,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740838228] [2024-11-17 03:43:10,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740838228] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:43:10,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:43:10,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 03:43:10,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406322975] [2024-11-17 03:43:10,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:43:10,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:43:10,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:10,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:43:10,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:43:10,696 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-17 03:43:10,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 84 transitions, 712 flow. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:10,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:10,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-17 03:43:10,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:10,939 INFO L124 PetriNetUnfolderBase]: 1513/2661 cut-off events. [2024-11-17 03:43:10,939 INFO L125 PetriNetUnfolderBase]: For 8476/8476 co-relation queries the response was YES. [2024-11-17 03:43:10,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9435 conditions, 2661 events. 1513/2661 cut-off events. For 8476/8476 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 15745 event pairs, 797 based on Foata normal form. 10/2667 useless extension candidates. Maximal degree in co-relation 8589. Up to 1972 conditions per place. [2024-11-17 03:43:10,953 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 89 selfloop transitions, 29 changer transitions 0/124 dead transitions. [2024-11-17 03:43:10,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 124 transitions, 1204 flow [2024-11-17 03:43:10,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:43:10,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:43:10,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 168 transitions. [2024-11-17 03:43:10,954 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-17 03:43:10,955 INFO L175 Difference]: Start difference. First operand has 89 places, 84 transitions, 712 flow. Second operand 5 states and 168 transitions. [2024-11-17 03:43:10,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 124 transitions, 1204 flow [2024-11-17 03:43:10,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 124 transitions, 1153 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-17 03:43:10,969 INFO L231 Difference]: Finished difference. Result has 94 places, 94 transitions, 895 flow [2024-11-17 03:43:10,970 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=895, PETRI_PLACES=94, PETRI_TRANSITIONS=94} [2024-11-17 03:43:10,971 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 42 predicate places. [2024-11-17 03:43:10,971 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 94 transitions, 895 flow [2024-11-17 03:43:10,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:10,971 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:10,971 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:10,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-17 03:43:10,971 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-17 03:43:10,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:10,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1725494405, now seen corresponding path program 5 times [2024-11-17 03:43:10,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:10,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490404257] [2024-11-17 03:43:10,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:10,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:11,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:43:11,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:11,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490404257] [2024-11-17 03:43:11,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490404257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:43:11,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:43:11,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 03:43:11,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558943992] [2024-11-17 03:43:11,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:43:11,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 03:43:11,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:11,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 03:43:11,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-17 03:43:11,089 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-17 03:43:11,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 94 transitions, 895 flow. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:11,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:11,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-17 03:43:11,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:11,390 INFO L124 PetriNetUnfolderBase]: 1439/2521 cut-off events. [2024-11-17 03:43:11,390 INFO L125 PetriNetUnfolderBase]: For 9342/9342 co-relation queries the response was YES. [2024-11-17 03:43:11,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9104 conditions, 2521 events. 1439/2521 cut-off events. For 9342/9342 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 14656 event pairs, 733 based on Foata normal form. 24/2541 useless extension candidates. Maximal degree in co-relation 8295. Up to 1800 conditions per place. [2024-11-17 03:43:11,415 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 98 selfloop transitions, 31 changer transitions 0/135 dead transitions. [2024-11-17 03:43:11,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 135 transitions, 1330 flow [2024-11-17 03:43:11,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 03:43:11,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 03:43:11,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2024-11-17 03:43:11,416 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5892857142857143 [2024-11-17 03:43:11,417 INFO L175 Difference]: Start difference. First operand has 94 places, 94 transitions, 895 flow. Second operand 6 states and 198 transitions. [2024-11-17 03:43:11,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 135 transitions, 1330 flow [2024-11-17 03:43:11,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 135 transitions, 1288 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-11-17 03:43:11,449 INFO L231 Difference]: Finished difference. Result has 101 places, 97 transitions, 978 flow [2024-11-17 03:43:11,449 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=978, PETRI_PLACES=101, PETRI_TRANSITIONS=97} [2024-11-17 03:43:11,450 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 49 predicate places. [2024-11-17 03:43:11,453 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 97 transitions, 978 flow [2024-11-17 03:43:11,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:11,453 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:11,453 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:11,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-17 03:43:11,454 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-17 03:43:11,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:11,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1657821046, now seen corresponding path program 1 times [2024-11-17 03:43:11,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:11,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419286656] [2024-11-17 03:43:11,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:11,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:11,707 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:43:11,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:11,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419286656] [2024-11-17 03:43:11,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419286656] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:43:11,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485841822] [2024-11-17 03:43:11,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:11,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:43:11,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:43:11,709 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:43:11,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 03:43:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:11,813 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-17 03:43:11,814 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:43:11,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-17 03:43:11,946 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:43:11,946 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:43:11,984 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-17 03:43:11,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2024-11-17 03:43:12,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:43:12,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485841822] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:43:12,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:43:12,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 3] total 11 [2024-11-17 03:43:12,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560155102] [2024-11-17 03:43:12,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:43:12,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-17 03:43:12,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:12,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-17 03:43:12,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-17 03:43:12,201 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 56 [2024-11-17 03:43:12,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 97 transitions, 978 flow. Second operand has 11 states, 11 states have (on average 28.454545454545453) internal successors, (313), 11 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:12,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:12,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 56 [2024-11-17 03:43:12,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:13,105 INFO L124 PetriNetUnfolderBase]: 2845/5095 cut-off events. [2024-11-17 03:43:13,105 INFO L125 PetriNetUnfolderBase]: For 12604/12604 co-relation queries the response was YES. [2024-11-17 03:43:13,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16043 conditions, 5095 events. 2845/5095 cut-off events. For 12604/12604 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 32960 event pairs, 268 based on Foata normal form. 48/5143 useless extension candidates. Maximal degree in co-relation 15131. Up to 1270 conditions per place. [2024-11-17 03:43:13,127 INFO L140 encePairwiseOnDemand]: 41/56 looper letters, 197 selfloop transitions, 91 changer transitions 5/300 dead transitions. [2024-11-17 03:43:13,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 300 transitions, 2582 flow [2024-11-17 03:43:13,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-17 03:43:13,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-17 03:43:13,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 579 transitions. [2024-11-17 03:43:13,132 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6462053571428571 [2024-11-17 03:43:13,132 INFO L175 Difference]: Start difference. First operand has 101 places, 97 transitions, 978 flow. Second operand 16 states and 579 transitions. [2024-11-17 03:43:13,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 300 transitions, 2582 flow [2024-11-17 03:43:13,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 300 transitions, 2481 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-11-17 03:43:13,151 INFO L231 Difference]: Finished difference. Result has 126 places, 148 transitions, 1687 flow [2024-11-17 03:43:13,151 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1687, PETRI_PLACES=126, PETRI_TRANSITIONS=148} [2024-11-17 03:43:13,151 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 74 predicate places. [2024-11-17 03:43:13,151 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 148 transitions, 1687 flow [2024-11-17 03:43:13,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 28.454545454545453) internal successors, (313), 11 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:13,151 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:13,151 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:13,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-17 03:43:13,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-17 03:43:13,356 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-17 03:43:13,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:13,356 INFO L85 PathProgramCache]: Analyzing trace with hash -860133088, now seen corresponding path program 2 times [2024-11-17 03:43:13,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:13,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471887823] [2024-11-17 03:43:13,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:13,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:13,546 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:43:13,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:13,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471887823] [2024-11-17 03:43:13,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471887823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:43:13,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:43:13,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 03:43:13,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77143860] [2024-11-17 03:43:13,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:43:13,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 03:43:13,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:13,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 03:43:13,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-17 03:43:13,567 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-17 03:43:13,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 148 transitions, 1687 flow. Second operand has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:13,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:13,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-17 03:43:13,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:14,383 INFO L124 PetriNetUnfolderBase]: 3154/5566 cut-off events. [2024-11-17 03:43:14,383 INFO L125 PetriNetUnfolderBase]: For 24449/24473 co-relation queries the response was YES. [2024-11-17 03:43:14,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22669 conditions, 5566 events. 3154/5566 cut-off events. For 24449/24473 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 36145 event pairs, 1647 based on Foata normal form. 52/5614 useless extension candidates. Maximal degree in co-relation 21491. Up to 3810 conditions per place. [2024-11-17 03:43:14,436 INFO L140 encePairwiseOnDemand]: 48/56 looper letters, 171 selfloop transitions, 46 changer transitions 0/223 dead transitions. [2024-11-17 03:43:14,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 223 transitions, 2663 flow [2024-11-17 03:43:14,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 03:43:14,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 03:43:14,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 237 transitions. [2024-11-17 03:43:14,446 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6045918367346939 [2024-11-17 03:43:14,446 INFO L175 Difference]: Start difference. First operand has 126 places, 148 transitions, 1687 flow. Second operand 7 states and 237 transitions. [2024-11-17 03:43:14,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 223 transitions, 2663 flow [2024-11-17 03:43:14,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 223 transitions, 2501 flow, removed 46 selfloop flow, removed 2 redundant places. [2024-11-17 03:43:14,549 INFO L231 Difference]: Finished difference. Result has 132 places, 158 transitions, 1819 flow [2024-11-17 03:43:14,550 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=1549, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1819, PETRI_PLACES=132, PETRI_TRANSITIONS=158} [2024-11-17 03:43:14,550 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 80 predicate places. [2024-11-17 03:43:14,550 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 158 transitions, 1819 flow [2024-11-17 03:43:14,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:14,550 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:14,550 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:14,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-17 03:43:14,550 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-17 03:43:14,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:14,551 INFO L85 PathProgramCache]: Analyzing trace with hash -496553170, now seen corresponding path program 3 times [2024-11-17 03:43:14,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:14,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905567494] [2024-11-17 03:43:14,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:14,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:14,839 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:43:14,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:14,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905567494] [2024-11-17 03:43:14,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905567494] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:43:14,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755664188] [2024-11-17 03:43:14,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 03:43:14,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:43:14,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:43:14,842 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:43:14,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-17 03:43:14,897 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-17 03:43:14,898 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:43:14,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-17 03:43:14,899 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:43:14,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-17 03:43:15,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:43:15,003 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:43:15,025 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-17 03:43:15,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2024-11-17 03:43:15,047 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 03:43:15,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755664188] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-17 03:43:15,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-17 03:43:15,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 5] total 13 [2024-11-17 03:43:15,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671172041] [2024-11-17 03:43:15,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:43:15,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:43:15,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:15,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:43:15,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-17 03:43:15,072 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 56 [2024-11-17 03:43:15,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 158 transitions, 1819 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:15,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:15,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 56 [2024-11-17 03:43:15,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:15,598 INFO L124 PetriNetUnfolderBase]: 2785/5482 cut-off events. [2024-11-17 03:43:15,598 INFO L125 PetriNetUnfolderBase]: For 22859/22947 co-relation queries the response was YES. [2024-11-17 03:43:15,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21676 conditions, 5482 events. 2785/5482 cut-off events. For 22859/22947 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 40635 event pairs, 722 based on Foata normal form. 22/5400 useless extension candidates. Maximal degree in co-relation 20464. Up to 3239 conditions per place. [2024-11-17 03:43:15,628 INFO L140 encePairwiseOnDemand]: 48/56 looper letters, 132 selfloop transitions, 65 changer transitions 1/217 dead transitions. [2024-11-17 03:43:15,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 217 transitions, 2688 flow [2024-11-17 03:43:15,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:43:15,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:43:15,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 166 transitions. [2024-11-17 03:43:15,636 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7410714285714286 [2024-11-17 03:43:15,636 INFO L175 Difference]: Start difference. First operand has 132 places, 158 transitions, 1819 flow. Second operand 4 states and 166 transitions. [2024-11-17 03:43:15,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 217 transitions, 2688 flow [2024-11-17 03:43:15,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 217 transitions, 2611 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-11-17 03:43:15,683 INFO L231 Difference]: Finished difference. Result has 134 places, 185 transitions, 2307 flow [2024-11-17 03:43:15,683 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=1757, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2307, PETRI_PLACES=134, PETRI_TRANSITIONS=185} [2024-11-17 03:43:15,684 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 82 predicate places. [2024-11-17 03:43:15,684 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 185 transitions, 2307 flow [2024-11-17 03:43:15,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:15,684 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:15,684 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:15,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-17 03:43:15,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:43:15,898 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-17 03:43:15,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:15,899 INFO L85 PathProgramCache]: Analyzing trace with hash -2044416527, now seen corresponding path program 1 times [2024-11-17 03:43:15,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:15,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472283421] [2024-11-17 03:43:15,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:15,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:15,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:16,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:43:16,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:16,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472283421] [2024-11-17 03:43:16,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472283421] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:43:16,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086845530] [2024-11-17 03:43:16,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:16,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:43:16,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:43:16,152 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:43:16,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-17 03:43:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:16,218 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-17 03:43:16,219 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:43:16,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:43:16,343 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:43:16,474 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:43:16,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086845530] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:43:16,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:43:16,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2024-11-17 03:43:16,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600491422] [2024-11-17 03:43:16,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:43:16,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-17 03:43:16,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:16,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-17 03:43:16,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2024-11-17 03:43:16,520 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-17 03:43:16,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 185 transitions, 2307 flow. Second operand has 16 states, 16 states have (on average 24.75) internal successors, (396), 16 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:16,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:16,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-17 03:43:16,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:21,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-17 03:43:26,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-17 03:43:26,658 INFO L124 PetriNetUnfolderBase]: 5458/9690 cut-off events. [2024-11-17 03:43:26,658 INFO L125 PetriNetUnfolderBase]: For 50577/50601 co-relation queries the response was YES. [2024-11-17 03:43:26,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41927 conditions, 9690 events. 5458/9690 cut-off events. For 50577/50601 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 70776 event pairs, 1691 based on Foata normal form. 204/9886 useless extension candidates. Maximal degree in co-relation 39113. Up to 4466 conditions per place. [2024-11-17 03:43:26,718 INFO L140 encePairwiseOnDemand]: 41/56 looper letters, 348 selfloop transitions, 298 changer transitions 0/652 dead transitions. [2024-11-17 03:43:26,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 652 transitions, 7778 flow [2024-11-17 03:43:26,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-17 03:43:26,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2024-11-17 03:43:26,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 1206 transitions. [2024-11-17 03:43:26,721 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5383928571428571 [2024-11-17 03:43:26,724 INFO L175 Difference]: Start difference. First operand has 134 places, 185 transitions, 2307 flow. Second operand 40 states and 1206 transitions. [2024-11-17 03:43:26,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 652 transitions, 7778 flow [2024-11-17 03:43:26,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 652 transitions, 7634 flow, removed 72 selfloop flow, removed 0 redundant places. [2024-11-17 03:43:26,969 INFO L231 Difference]: Finished difference. Result has 201 places, 432 transitions, 6386 flow [2024-11-17 03:43:26,969 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=2223, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=6386, PETRI_PLACES=201, PETRI_TRANSITIONS=432} [2024-11-17 03:43:26,970 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 149 predicate places. [2024-11-17 03:43:26,970 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 432 transitions, 6386 flow [2024-11-17 03:43:26,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 24.75) internal successors, (396), 16 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:26,970 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:26,970 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:26,983 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-17 03:43:27,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:43:27,174 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-17 03:43:27,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:27,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1744667991, now seen corresponding path program 2 times [2024-11-17 03:43:27,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:27,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297712867] [2024-11-17 03:43:27,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:27,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:27,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:27,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:43:27,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:27,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297712867] [2024-11-17 03:43:27,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297712867] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:43:27,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850363967] [2024-11-17 03:43:27,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 03:43:27,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:43:27,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:43:27,283 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:43:27,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-17 03:43:27,340 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 03:43:27,340 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:43:27,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-17 03:43:27,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:43:27,384 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:43:27,384 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:43:27,461 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:43:27,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850363967] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:43:27,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:43:27,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-17 03:43:27,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440486849] [2024-11-17 03:43:27,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:43:27,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-17 03:43:27,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:27,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-17 03:43:27,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-17 03:43:27,495 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-17 03:43:27,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 432 transitions, 6386 flow. Second operand has 15 states, 15 states have (on average 25.0) internal successors, (375), 15 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:27,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:27,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-17 03:43:27,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:30,472 INFO L124 PetriNetUnfolderBase]: 6982/12814 cut-off events. [2024-11-17 03:43:30,472 INFO L125 PetriNetUnfolderBase]: For 115949/115949 co-relation queries the response was YES. [2024-11-17 03:43:30,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66606 conditions, 12814 events. 6982/12814 cut-off events. For 115949/115949 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 101311 event pairs, 1768 based on Foata normal form. 60/12870 useless extension candidates. Maximal degree in co-relation 61619. Up to 3979 conditions per place. [2024-11-17 03:43:30,557 INFO L140 encePairwiseOnDemand]: 40/56 looper letters, 435 selfloop transitions, 333 changer transitions 13/787 dead transitions. [2024-11-17 03:43:30,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 787 transitions, 11690 flow [2024-11-17 03:43:30,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-17 03:43:30,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-17 03:43:30,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 722 transitions. [2024-11-17 03:43:30,563 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.586038961038961 [2024-11-17 03:43:30,563 INFO L175 Difference]: Start difference. First operand has 201 places, 432 transitions, 6386 flow. Second operand 22 states and 722 transitions. [2024-11-17 03:43:30,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 787 transitions, 11690 flow [2024-11-17 03:43:31,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 787 transitions, 10723 flow, removed 378 selfloop flow, removed 5 redundant places. [2024-11-17 03:43:31,109 INFO L231 Difference]: Finished difference. Result has 230 places, 598 transitions, 9227 flow [2024-11-17 03:43:31,110 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=5645, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=9227, PETRI_PLACES=230, PETRI_TRANSITIONS=598} [2024-11-17 03:43:31,110 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 178 predicate places. [2024-11-17 03:43:31,113 INFO L471 AbstractCegarLoop]: Abstraction has has 230 places, 598 transitions, 9227 flow [2024-11-17 03:43:31,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 25.0) internal successors, (375), 15 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:31,113 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:31,113 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:31,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-17 03:43:31,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:43:31,314 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-17 03:43:31,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:31,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1337581079, now seen corresponding path program 3 times [2024-11-17 03:43:31,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:31,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840956947] [2024-11-17 03:43:31,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:31,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:31,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:43:31,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:31,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840956947] [2024-11-17 03:43:31,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840956947] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:43:31,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917330351] [2024-11-17 03:43:31,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 03:43:31,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:43:31,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:43:31,707 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:43:31,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-17 03:43:31,769 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-17 03:43:31,769 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:43:31,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-17 03:43:31,772 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:43:31,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:43:31,845 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:43:31,960 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:43:31,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917330351] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:43:31,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:43:31,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 18 [2024-11-17 03:43:31,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140233934] [2024-11-17 03:43:31,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:43:31,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-17 03:43:31,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:31,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-17 03:43:31,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-17 03:43:31,994 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-17 03:43:31,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 598 transitions, 9227 flow. Second operand has 18 states, 18 states have (on average 24.333333333333332) internal successors, (438), 18 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:31,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:31,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-17 03:43:31,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:36,851 INFO L124 PetriNetUnfolderBase]: 8680/15947 cut-off events. [2024-11-17 03:43:36,851 INFO L125 PetriNetUnfolderBase]: For 167306/167330 co-relation queries the response was YES. [2024-11-17 03:43:36,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87339 conditions, 15947 events. 8680/15947 cut-off events. For 167306/167330 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 131186 event pairs, 1984 based on Foata normal form. 164/16095 useless extension candidates. Maximal degree in co-relation 84493. Up to 4325 conditions per place. [2024-11-17 03:43:36,971 INFO L140 encePairwiseOnDemand]: 40/56 looper letters, 521 selfloop transitions, 570 changer transitions 0/1097 dead transitions. [2024-11-17 03:43:36,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 1097 transitions, 17184 flow [2024-11-17 03:43:36,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-17 03:43:36,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-17 03:43:36,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 852 transitions. [2024-11-17 03:43:36,973 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6085714285714285 [2024-11-17 03:43:36,973 INFO L175 Difference]: Start difference. First operand has 230 places, 598 transitions, 9227 flow. Second operand 25 states and 852 transitions. [2024-11-17 03:43:36,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 1097 transitions, 17184 flow [2024-11-17 03:43:38,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 1097 transitions, 16596 flow, removed 267 selfloop flow, removed 4 redundant places. [2024-11-17 03:43:38,539 INFO L231 Difference]: Finished difference. Result has 271 places, 874 transitions, 14847 flow [2024-11-17 03:43:38,540 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=8861, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=326, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=14847, PETRI_PLACES=271, PETRI_TRANSITIONS=874} [2024-11-17 03:43:38,540 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 219 predicate places. [2024-11-17 03:43:38,540 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 874 transitions, 14847 flow [2024-11-17 03:43:38,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 24.333333333333332) internal successors, (438), 18 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:38,540 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:38,540 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:38,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-17 03:43:38,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-17 03:43:38,741 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-17 03:43:38,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:38,741 INFO L85 PathProgramCache]: Analyzing trace with hash -986945627, now seen corresponding path program 1 times [2024-11-17 03:43:38,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:38,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018706867] [2024-11-17 03:43:38,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:38,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:38,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:38,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:43:38,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:38,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018706867] [2024-11-17 03:43:38,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018706867] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:43:38,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923129798] [2024-11-17 03:43:38,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:38,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:43:38,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:43:38,989 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:43:38,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-17 03:43:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:39,046 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-17 03:43:39,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:43:39,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 03:43:39,202 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:39,203 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:43:39,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 51 [2024-11-17 03:43:39,535 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:43:39,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 58 [2024-11-17 03:43:39,839 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:43:39,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923129798] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:43:39,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:43:39,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 22 [2024-11-17 03:43:39,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698011407] [2024-11-17 03:43:39,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:43:39,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-17 03:43:39,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:39,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-17 03:43:39,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2024-11-17 03:43:40,464 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 56 [2024-11-17 03:43:40,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 874 transitions, 14847 flow. Second operand has 22 states, 22 states have (on average 24.272727272727273) internal successors, (534), 22 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:40,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:40,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 56 [2024-11-17 03:43:40,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:46,685 INFO L124 PetriNetUnfolderBase]: 10342/18894 cut-off events. [2024-11-17 03:43:46,686 INFO L125 PetriNetUnfolderBase]: For 259733/259745 co-relation queries the response was YES. [2024-11-17 03:43:46,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116190 conditions, 18894 events. 10342/18894 cut-off events. For 259733/259745 co-relation queries the response was YES. Maximal size of possible extension queue 892. Compared 158220 event pairs, 1848 based on Foata normal form. 67/18959 useless extension candidates. Maximal degree in co-relation 114411. Up to 5908 conditions per place. [2024-11-17 03:43:46,832 INFO L140 encePairwiseOnDemand]: 36/56 looper letters, 659 selfloop transitions, 348 changer transitions 657/1668 dead transitions. [2024-11-17 03:43:46,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 1668 transitions, 29471 flow [2024-11-17 03:43:46,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-17 03:43:46,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-17 03:43:46,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1019 transitions. [2024-11-17 03:43:46,835 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5869815668202765 [2024-11-17 03:43:46,835 INFO L175 Difference]: Start difference. First operand has 271 places, 874 transitions, 14847 flow. Second operand 31 states and 1019 transitions. [2024-11-17 03:43:46,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 1668 transitions, 29471 flow [2024-11-17 03:43:49,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 1668 transitions, 28280 flow, removed 569 selfloop flow, removed 1 redundant places. [2024-11-17 03:43:49,246 INFO L231 Difference]: Finished difference. Result has 312 places, 816 transitions, 14542 flow [2024-11-17 03:43:49,247 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=14236, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=874, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=304, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=14542, PETRI_PLACES=312, PETRI_TRANSITIONS=816} [2024-11-17 03:43:49,247 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 260 predicate places. [2024-11-17 03:43:49,247 INFO L471 AbstractCegarLoop]: Abstraction has has 312 places, 816 transitions, 14542 flow [2024-11-17 03:43:49,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 24.272727272727273) internal successors, (534), 22 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:49,247 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:43:49,248 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:43:49,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-17 03:43:49,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-17 03:43:49,448 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-17 03:43:49,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:43:49,449 INFO L85 PathProgramCache]: Analyzing trace with hash -2144388127, now seen corresponding path program 4 times [2024-11-17 03:43:49,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:43:49,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131042973] [2024-11-17 03:43:49,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:43:49,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:43:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:43:49,609 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:43:49,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:43:49,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131042973] [2024-11-17 03:43:49,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131042973] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:43:49,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25981765] [2024-11-17 03:43:49,610 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-17 03:43:49,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:43:49,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:43:49,611 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:43:49,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-17 03:43:49,674 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-17 03:43:49,674 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:43:49,675 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-17 03:43:49,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:43:49,718 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:43:49,719 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:43:49,802 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:43:49,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25981765] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:43:49,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:43:49,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-17 03:43:49,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893685716] [2024-11-17 03:43:49,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:43:49,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-17 03:43:49,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:43:49,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-17 03:43:49,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-17 03:43:49,834 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-17 03:43:49,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 816 transitions, 14542 flow. Second operand has 15 states, 15 states have (on average 24.666666666666668) internal successors, (370), 15 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:43:49,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:43:49,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-17 03:43:49,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:43:55,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-17 03:44:05,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-17 03:44:10,757 INFO L124 PetriNetUnfolderBase]: 8633/16263 cut-off events. [2024-11-17 03:44:10,757 INFO L125 PetriNetUnfolderBase]: For 246659/246659 co-relation queries the response was YES. [2024-11-17 03:44:11,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102185 conditions, 16263 events. 8633/16263 cut-off events. For 246659/246659 co-relation queries the response was YES. Maximal size of possible extension queue 730. Compared 136092 event pairs, 1680 based on Foata normal form. 162/16419 useless extension candidates. Maximal degree in co-relation 101047. Up to 4959 conditions per place. [2024-11-17 03:44:11,085 INFO L140 encePairwiseOnDemand]: 39/56 looper letters, 699 selfloop transitions, 884 changer transitions 23/1612 dead transitions. [2024-11-17 03:44:11,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 1612 transitions, 29791 flow [2024-11-17 03:44:11,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-17 03:44:11,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-17 03:44:11,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1042 transitions. [2024-11-17 03:44:11,089 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5638528138528138 [2024-11-17 03:44:11,089 INFO L175 Difference]: Start difference. First operand has 312 places, 816 transitions, 14542 flow. Second operand 33 states and 1042 transitions. [2024-11-17 03:44:11,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 1612 transitions, 29791 flow [2024-11-17 03:44:12,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 1612 transitions, 29432 flow, removed 165 selfloop flow, removed 10 redundant places. [2024-11-17 03:44:12,830 INFO L231 Difference]: Finished difference. Result has 349 places, 1321 transitions, 26751 flow [2024-11-17 03:44:12,831 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=14093, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=808, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=448, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=26751, PETRI_PLACES=349, PETRI_TRANSITIONS=1321} [2024-11-17 03:44:12,832 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 297 predicate places. [2024-11-17 03:44:12,832 INFO L471 AbstractCegarLoop]: Abstraction has has 349 places, 1321 transitions, 26751 flow [2024-11-17 03:44:12,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 24.666666666666668) internal successors, (370), 15 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:44:12,832 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:44:12,832 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:44:12,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-17 03:44:13,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-17 03:44:13,033 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-17 03:44:13,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:44:13,033 INFO L85 PathProgramCache]: Analyzing trace with hash -793829893, now seen corresponding path program 5 times [2024-11-17 03:44:13,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:44:13,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053394995] [2024-11-17 03:44:13,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:44:13,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:44:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:44:13,145 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:44:13,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:44:13,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053394995] [2024-11-17 03:44:13,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053394995] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:44:13,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030256992] [2024-11-17 03:44:13,145 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-17 03:44:13,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:44:13,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:44:13,149 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:44:13,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-17 03:44:13,214 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 03:44:13,214 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:44:13,215 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-17 03:44:13,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:44:13,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:44:13,260 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:44:13,330 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:44:13,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030256992] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:44:13,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:44:13,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2024-11-17 03:44:13,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382627130] [2024-11-17 03:44:13,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:44:13,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-17 03:44:13,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:44:13,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-17 03:44:13,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-17 03:44:13,366 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-17 03:44:13,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 1321 transitions, 26751 flow. Second operand has 15 states, 15 states have (on average 24.733333333333334) internal successors, (371), 15 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:44:13,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:44:13,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-17 03:44:13,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:44:22,649 INFO L124 PetriNetUnfolderBase]: 12575/23449 cut-off events. [2024-11-17 03:44:22,649 INFO L125 PetriNetUnfolderBase]: For 543998/544002 co-relation queries the response was YES. [2024-11-17 03:44:22,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171357 conditions, 23449 events. 12575/23449 cut-off events. For 543998/544002 co-relation queries the response was YES. Maximal size of possible extension queue 678. Compared 191904 event pairs, 1370 based on Foata normal form. 260/23703 useless extension candidates. Maximal degree in co-relation 171179. Up to 4272 conditions per place. [2024-11-17 03:44:22,936 INFO L140 encePairwiseOnDemand]: 41/56 looper letters, 501 selfloop transitions, 1916 changer transitions 11/2434 dead transitions. [2024-11-17 03:44:22,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 2434 transitions, 52917 flow [2024-11-17 03:44:22,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-17 03:44:22,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2024-11-17 03:44:22,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 1194 transitions. [2024-11-17 03:44:22,942 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5200348432055749 [2024-11-17 03:44:22,942 INFO L175 Difference]: Start difference. First operand has 349 places, 1321 transitions, 26751 flow. Second operand 41 states and 1194 transitions. [2024-11-17 03:44:22,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 2434 transitions, 52917 flow [2024-11-17 03:44:29,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 2434 transitions, 48683 flow, removed 1851 selfloop flow, removed 17 redundant places. [2024-11-17 03:44:29,433 INFO L231 Difference]: Finished difference. Result has 388 places, 2171 transitions, 45950 flow [2024-11-17 03:44:29,434 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=22800, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1011, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=45950, PETRI_PLACES=388, PETRI_TRANSITIONS=2171} [2024-11-17 03:44:29,435 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 336 predicate places. [2024-11-17 03:44:29,435 INFO L471 AbstractCegarLoop]: Abstraction has has 388 places, 2171 transitions, 45950 flow [2024-11-17 03:44:29,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 24.733333333333334) internal successors, (371), 15 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:44:29,435 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:44:29,435 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:44:29,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-17 03:44:29,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-17 03:44:29,636 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-17 03:44:29,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:44:29,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1597927301, now seen corresponding path program 2 times [2024-11-17 03:44:29,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:44:29,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171432178] [2024-11-17 03:44:29,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:44:29,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:44:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:44:29,912 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 03:44:29,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:44:29,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171432178] [2024-11-17 03:44:29,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171432178] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:44:29,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693212785] [2024-11-17 03:44:29,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 03:44:29,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:44:29,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:44:29,918 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:44:29,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-17 03:44:29,985 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 03:44:29,985 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:44:29,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-17 03:44:29,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:44:30,061 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 03:44:30,061 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:44:30,220 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 03:44:30,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693212785] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:44:30,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:44:30,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-17 03:44:30,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45347174] [2024-11-17 03:44:30,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:44:30,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-17 03:44:30,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:44:30,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-17 03:44:30,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2024-11-17 03:44:30,395 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-17 03:44:30,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 2171 transitions, 45950 flow. Second operand has 20 states, 20 states have (on average 24.0) internal successors, (480), 20 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:44:30,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:44:30,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-17 03:44:30,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand