./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/chl-node-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc 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/chl-node-symm.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 9db11e263e78e3a6bd75c2a0c3dda64920ec857df2fbb1d0b7b1072a48f36a31 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:45:22,321 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:45:22,382 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 09:45:22,387 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:45:22,388 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:45:22,414 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:45:22,415 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:45:22,415 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:45:22,416 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:45:22,418 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:45:22,418 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:45:22,430 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:45:22,430 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:45:22,430 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:45:22,431 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:45:22,431 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:45:22,431 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:45:22,431 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:45:22,431 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:45:22,432 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:45:22,432 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:45:22,436 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:45:22,436 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:45:22,437 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:45:22,437 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:45:22,437 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:45:22,437 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:45:22,437 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:45:22,438 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:45:22,438 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:45:22,438 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:45:22,438 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:45:22,438 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:45:22,439 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:45:22,439 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:45:22,439 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:45:22,439 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 09:45:22,439 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 09:45:22,440 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:45:22,440 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:45:22,440 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:45:22,441 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:45:22,441 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9db11e263e78e3a6bd75c2a0c3dda64920ec857df2fbb1d0b7b1072a48f36a31 [2024-11-19 09:45:22,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:45:22,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:45:22,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:45:22,726 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:45:22,726 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:45:22,727 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2024-11-19 09:45:24,028 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:45:24,201 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:45:24,207 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2024-11-19 09:45:24,219 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7de2aa8b5/a85be14bcfde49dc8aa32737eacc2055/FLAGf1a016bfb [2024-11-19 09:45:24,236 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7de2aa8b5/a85be14bcfde49dc8aa32737eacc2055 [2024-11-19 09:45:24,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:45:24,239 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:45:24,240 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:45:24,241 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:45:24,250 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:45:24,252 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:45:24" (1/1) ... [2024-11-19 09:45:24,253 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@416d97fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:45:24, skipping insertion in model container [2024-11-19 09:45:24,253 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:45:24" (1/1) ... [2024-11-19 09:45:24,273 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:45:24,554 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 09:45:24,562 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 09:45:24,565 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:45:24,582 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 09:45:24,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:45:24,627 INFO L204 MainTranslator]: Completed translation [2024-11-19 09:45:24,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:45:24 WrapperNode [2024-11-19 09:45:24,630 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:45:24,631 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 09:45:24,631 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 09:45:24,631 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 09:45:24,637 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:45:24" (1/1) ... [2024-11-19 09:45:24,646 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:45:24" (1/1) ... [2024-11-19 09:45:24,685 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 19, calls inlined = 25, statements flattened = 291 [2024-11-19 09:45:24,687 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 09:45:24,688 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 09:45:24,688 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 09:45:24,688 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 09:45:24,696 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:45:24" (1/1) ... [2024-11-19 09:45:24,696 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:45:24" (1/1) ... [2024-11-19 09:45:24,699 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:45:24" (1/1) ... [2024-11-19 09:45:24,715 INFO L175 MemorySlicer]: Split 18 memory accesses to 3 slices as follows [2, 6, 10]. 56 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 4 writes are split as follows [0, 2, 2]. [2024-11-19 09:45:24,720 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:45:24" (1/1) ... [2024-11-19 09:45:24,720 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:45:24" (1/1) ... [2024-11-19 09:45:24,727 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:45:24" (1/1) ... [2024-11-19 09:45:24,735 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:45:24" (1/1) ... [2024-11-19 09:45:24,736 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:45:24" (1/1) ... [2024-11-19 09:45:24,742 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:45:24" (1/1) ... [2024-11-19 09:45:24,745 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 09:45:24,749 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 09:45:24,749 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 09:45:24,749 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 09:45:24,750 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:45:24" (1/1) ... [2024-11-19 09:45:24,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:45:24,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:45:24,797 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) [2024-11-19 09:45:24,806 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 [2024-11-19 09:45:24,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 09:45:24,838 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 09:45:24,839 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 09:45:24,839 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 09:45:24,839 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 09:45:24,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 09:45:24,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 09:45:24,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 09:45:24,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 09:45:24,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 09:45:24,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 09:45:24,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 09:45:24,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 09:45:24,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 09:45:24,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 09:45:24,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 09:45:24,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 09:45:24,841 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 09:45:24,934 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 09:45:24,935 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 09:45:25,335 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 09:45:25,335 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 09:45:25,643 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 09:45:25,643 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-19 09:45:25,644 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:45:25 BoogieIcfgContainer [2024-11-19 09:45:25,644 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 09:45:25,645 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 09:45:25,645 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 09:45:25,649 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 09:45:25,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:45:24" (1/3) ... [2024-11-19 09:45:25,651 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dc838fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:45:25, skipping insertion in model container [2024-11-19 09:45:25,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:45:24" (2/3) ... [2024-11-19 09:45:25,652 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dc838fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:45:25, skipping insertion in model container [2024-11-19 09:45:25,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:45:25" (3/3) ... [2024-11-19 09:45:25,653 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2024-11-19 09:45:25,669 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 09:45:25,669 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2024-11-19 09:45:25,669 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 09:45:25,729 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 09:45:25,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 82 transitions, 178 flow [2024-11-19 09:45:25,793 INFO L124 PetriNetUnfolderBase]: 8/80 cut-off events. [2024-11-19 09:45:25,794 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 09:45:25,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 80 events. 8/80 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 220 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2024-11-19 09:45:25,799 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 82 transitions, 178 flow [2024-11-19 09:45:25,802 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 79 transitions, 170 flow [2024-11-19 09:45:25,812 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:45:25,818 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;@34c75fa3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:45:25,819 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-11-19 09:45:25,823 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:45:25,823 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-19 09:45:25,823 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:45:25,823 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:45:25,824 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 09:45:25,825 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:45:25,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:45:25,829 INFO L85 PathProgramCache]: Analyzing trace with hash 930278, now seen corresponding path program 1 times [2024-11-19 09:45:25,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:45:25,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835405529] [2024-11-19 09:45:25,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:45:25,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:45:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:45:26,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:45:26,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:45:26,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835405529] [2024-11-19 09:45:26,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835405529] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:45:26,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:45:26,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:45:26,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34656421] [2024-11-19 09:45:26,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:45:26,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:45:26,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:45:26,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:45:26,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:45:26,271 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 82 [2024-11-19 09:45:26,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 79 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 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) [2024-11-19 09:45:26,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:45:26,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 82 [2024-11-19 09:45:26,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:45:26,394 INFO L124 PetriNetUnfolderBase]: 192/580 cut-off events. [2024-11-19 09:45:26,394 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-19 09:45:26,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 912 conditions, 580 events. 192/580 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3512 event pairs, 113 based on Foata normal form. 1/426 useless extension candidates. Maximal degree in co-relation 827. Up to 301 conditions per place. [2024-11-19 09:45:26,403 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 32 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2024-11-19 09:45:26,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 75 transitions, 230 flow [2024-11-19 09:45:26,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:45:26,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:45:26,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2024-11-19 09:45:26,416 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6869918699186992 [2024-11-19 09:45:26,418 INFO L175 Difference]: Start difference. First operand has 78 places, 79 transitions, 170 flow. Second operand 3 states and 169 transitions. [2024-11-19 09:45:26,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 75 transitions, 230 flow [2024-11-19 09:45:26,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 75 transitions, 222 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 09:45:26,423 INFO L231 Difference]: Finished difference. Result has 72 places, 75 transitions, 158 flow [2024-11-19 09:45:26,425 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=72, PETRI_TRANSITIONS=75} [2024-11-19 09:45:26,427 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -6 predicate places. [2024-11-19 09:45:26,429 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 75 transitions, 158 flow [2024-11-19 09:45:26,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 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) [2024-11-19 09:45:26,430 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:45:26,430 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 09:45:26,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 09:45:26,430 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:45:26,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:45:26,431 INFO L85 PathProgramCache]: Analyzing trace with hash 930279, now seen corresponding path program 1 times [2024-11-19 09:45:26,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:45:26,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095739281] [2024-11-19 09:45:26,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:45:26,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:45:26,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:45:26,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:45:26,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:45:26,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095739281] [2024-11-19 09:45:26,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095739281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:45:26,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:45:26,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:45:26,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421592725] [2024-11-19 09:45:26,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:45:26,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:45:26,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:45:26,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:45:26,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:45:26,728 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 82 [2024-11-19 09:45:26,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 75 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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) [2024-11-19 09:45:26,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:45:26,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 82 [2024-11-19 09:45:26,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:45:26,870 INFO L124 PetriNetUnfolderBase]: 192/582 cut-off events. [2024-11-19 09:45:26,870 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 09:45:26,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 904 conditions, 582 events. 192/582 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3510 event pairs, 113 based on Foata normal form. 0/426 useless extension candidates. Maximal degree in co-relation 877. Up to 309 conditions per place. [2024-11-19 09:45:26,876 INFO L140 encePairwiseOnDemand]: 78/82 looper letters, 36 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2024-11-19 09:45:26,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 77 transitions, 238 flow [2024-11-19 09:45:26,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:45:26,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:45:26,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 172 transitions. [2024-11-19 09:45:26,880 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6991869918699187 [2024-11-19 09:45:26,881 INFO L175 Difference]: Start difference. First operand has 72 places, 75 transitions, 158 flow. Second operand 3 states and 172 transitions. [2024-11-19 09:45:26,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 77 transitions, 238 flow [2024-11-19 09:45:26,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 77 transitions, 234 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:45:26,884 INFO L231 Difference]: Finished difference. Result has 73 places, 76 transitions, 168 flow [2024-11-19 09:45:26,884 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=73, PETRI_TRANSITIONS=76} [2024-11-19 09:45:26,885 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -5 predicate places. [2024-11-19 09:45:26,885 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 76 transitions, 168 flow [2024-11-19 09:45:26,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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) [2024-11-19 09:45:26,885 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:45:26,886 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-19 09:45:26,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 09:45:26,887 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:45:26,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:45:26,888 INFO L85 PathProgramCache]: Analyzing trace with hash 894027941, now seen corresponding path program 1 times [2024-11-19 09:45:26,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:45:26,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91102170] [2024-11-19 09:45:26,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:45:26,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:45:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:45:27,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:45:27,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:45:27,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91102170] [2024-11-19 09:45:27,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91102170] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:45:27,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438915006] [2024-11-19 09:45:27,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:45:27,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:45:27,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:45:27,155 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) [2024-11-19 09:45:27,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 09:45:27,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:45:27,232 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 09:45:27,236 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:45:27,298 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 10 treesize of output 9 [2024-11-19 09:45:27,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:45:27,477 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:45:27,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:45:27,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438915006] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:45:27,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:45:27,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-19 09:45:27,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205336591] [2024-11-19 09:45:27,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:45:27,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:45:27,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:45:27,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:45:27,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:45:27,931 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 82 [2024-11-19 09:45:27,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 76 transitions, 168 flow. Second operand has 11 states, 11 states have (on average 45.36363636363637) internal successors, (499), 11 states have internal predecessors, (499), 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) [2024-11-19 09:45:27,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:45:27,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 82 [2024-11-19 09:45:27,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:45:28,186 INFO L124 PetriNetUnfolderBase]: 192/581 cut-off events. [2024-11-19 09:45:28,187 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 09:45:28,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 906 conditions, 581 events. 192/581 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3510 event pairs, 113 based on Foata normal form. 0/426 useless extension candidates. Maximal degree in co-relation 893. Up to 305 conditions per place. [2024-11-19 09:45:28,191 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 32 selfloop transitions, 5 changer transitions 0/76 dead transitions. [2024-11-19 09:45:28,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 76 transitions, 240 flow [2024-11-19 09:45:28,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:45:28,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:45:28,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 258 transitions. [2024-11-19 09:45:28,196 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6292682926829268 [2024-11-19 09:45:28,196 INFO L175 Difference]: Start difference. First operand has 73 places, 76 transitions, 168 flow. Second operand 5 states and 258 transitions. [2024-11-19 09:45:28,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 76 transitions, 240 flow [2024-11-19 09:45:28,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 76 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:45:28,199 INFO L231 Difference]: Finished difference. Result has 76 places, 76 transitions, 180 flow [2024-11-19 09:45:28,199 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=180, PETRI_PLACES=76, PETRI_TRANSITIONS=76} [2024-11-19 09:45:28,200 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -2 predicate places. [2024-11-19 09:45:28,200 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 76 transitions, 180 flow [2024-11-19 09:45:28,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 45.36363636363637) internal successors, (499), 11 states have internal predecessors, (499), 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) [2024-11-19 09:45:28,201 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:45:28,201 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 09:45:28,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 09:45:28,405 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 [2024-11-19 09:45:28,406 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:45:28,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:45:28,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1945063750, now seen corresponding path program 1 times [2024-11-19 09:45:28,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:45:28,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496507257] [2024-11-19 09:45:28,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:45:28,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:45:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:45:28,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:45:28,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:45:28,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496507257] [2024-11-19 09:45:28,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496507257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:45:28,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:45:28,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:45:28,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874434470] [2024-11-19 09:45:28,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:45:28,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:45:28,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:45:28,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:45:28,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:45:28,709 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 82 [2024-11-19 09:45:28,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 76 transitions, 180 flow. Second operand has 5 states, 5 states have (on average 45.2) internal successors, (226), 5 states have internal predecessors, (226), 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) [2024-11-19 09:45:28,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:45:28,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 82 [2024-11-19 09:45:28,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:45:28,816 INFO L124 PetriNetUnfolderBase]: 193/584 cut-off events. [2024-11-19 09:45:28,816 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 09:45:28,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 920 conditions, 584 events. 193/584 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3522 event pairs, 113 based on Foata normal form. 0/428 useless extension candidates. Maximal degree in co-relation 891. Up to 308 conditions per place. [2024-11-19 09:45:28,820 INFO L140 encePairwiseOnDemand]: 76/82 looper letters, 35 selfloop transitions, 5 changer transitions 0/79 dead transitions. [2024-11-19 09:45:28,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 79 transitions, 266 flow [2024-11-19 09:45:28,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:45:28,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:45:28,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2024-11-19 09:45:28,821 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6615853658536586 [2024-11-19 09:45:28,821 INFO L175 Difference]: Start difference. First operand has 76 places, 76 transitions, 180 flow. Second operand 4 states and 217 transitions. [2024-11-19 09:45:28,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 79 transitions, 266 flow [2024-11-19 09:45:28,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 79 transitions, 256 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-19 09:45:28,824 INFO L231 Difference]: Finished difference. Result has 77 places, 78 transitions, 195 flow [2024-11-19 09:45:28,824 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=195, PETRI_PLACES=77, PETRI_TRANSITIONS=78} [2024-11-19 09:45:28,824 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -1 predicate places. [2024-11-19 09:45:28,825 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 78 transitions, 195 flow [2024-11-19 09:45:28,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.2) internal successors, (226), 5 states have internal predecessors, (226), 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) [2024-11-19 09:45:28,825 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:45:28,825 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:45:28,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 09:45:28,825 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:45:28,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:45:28,826 INFO L85 PathProgramCache]: Analyzing trace with hash 167435176, now seen corresponding path program 1 times [2024-11-19 09:45:28,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:45:28,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388944844] [2024-11-19 09:45:28,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:45:28,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:45:28,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:45:28,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:45:28,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:45:28,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388944844] [2024-11-19 09:45:28,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388944844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:45:28,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:45:28,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:45:28,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255563579] [2024-11-19 09:45:28,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:45:28,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:45:28,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:45:28,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:45:28,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:45:28,887 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 82 [2024-11-19 09:45:28,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 78 transitions, 195 flow. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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) [2024-11-19 09:45:28,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:45:28,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 82 [2024-11-19 09:45:28,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:45:28,967 INFO L124 PetriNetUnfolderBase]: 193/582 cut-off events. [2024-11-19 09:45:28,967 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 09:45:28,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 923 conditions, 582 events. 193/582 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3518 event pairs, 113 based on Foata normal form. 0/431 useless extension candidates. Maximal degree in co-relation 895. Up to 305 conditions per place. [2024-11-19 09:45:28,970 INFO L140 encePairwiseOnDemand]: 78/82 looper letters, 35 selfloop transitions, 3 changer transitions 0/76 dead transitions. [2024-11-19 09:45:28,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 76 transitions, 267 flow [2024-11-19 09:45:28,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:45:28,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:45:28,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 168 transitions. [2024-11-19 09:45:28,971 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6829268292682927 [2024-11-19 09:45:28,971 INFO L175 Difference]: Start difference. First operand has 77 places, 78 transitions, 195 flow. Second operand 3 states and 168 transitions. [2024-11-19 09:45:28,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 76 transitions, 267 flow [2024-11-19 09:45:28,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 76 transitions, 262 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:45:28,973 INFO L231 Difference]: Finished difference. Result has 75 places, 76 transitions, 192 flow [2024-11-19 09:45:28,973 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=75, PETRI_TRANSITIONS=76} [2024-11-19 09:45:28,974 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -3 predicate places. [2024-11-19 09:45:28,974 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 76 transitions, 192 flow [2024-11-19 09:45:28,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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) [2024-11-19 09:45:28,974 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:45:28,974 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:45:28,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 09:45:28,975 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:45:28,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:45:28,975 INFO L85 PathProgramCache]: Analyzing trace with hash 167435177, now seen corresponding path program 1 times [2024-11-19 09:45:28,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:45:28,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981862227] [2024-11-19 09:45:28,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:45:28,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:45:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:45:29,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:45:29,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:45:29,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981862227] [2024-11-19 09:45:29,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981862227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:45:29,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:45:29,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:45:29,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475106973] [2024-11-19 09:45:29,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:45:29,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:45:29,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:45:29,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:45:29,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:45:29,043 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-19 09:45:29,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 76 transitions, 192 flow. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 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) [2024-11-19 09:45:29,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:45:29,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-19 09:45:29,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:45:29,156 INFO L124 PetriNetUnfolderBase]: 192/581 cut-off events. [2024-11-19 09:45:29,156 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 09:45:29,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 919 conditions, 581 events. 192/581 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3507 event pairs, 113 based on Foata normal form. 1/432 useless extension candidates. Maximal degree in co-relation 892. Up to 306 conditions per place. [2024-11-19 09:45:29,159 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 34 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2024-11-19 09:45:29,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 76 transitions, 264 flow [2024-11-19 09:45:29,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:45:29,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:45:29,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 223 transitions. [2024-11-19 09:45:29,160 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6798780487804879 [2024-11-19 09:45:29,160 INFO L175 Difference]: Start difference. First operand has 75 places, 76 transitions, 192 flow. Second operand 4 states and 223 transitions. [2024-11-19 09:45:29,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 76 transitions, 264 flow [2024-11-19 09:45:29,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 76 transitions, 260 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:45:29,162 INFO L231 Difference]: Finished difference. Result has 76 places, 75 transitions, 190 flow [2024-11-19 09:45:29,162 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=76, PETRI_TRANSITIONS=75} [2024-11-19 09:45:29,163 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -2 predicate places. [2024-11-19 09:45:29,163 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 75 transitions, 190 flow [2024-11-19 09:45:29,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 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) [2024-11-19 09:45:29,163 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:45:29,163 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-19 09:45:29,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 09:45:29,164 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:45:29,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:45:29,164 INFO L85 PathProgramCache]: Analyzing trace with hash 895521136, now seen corresponding path program 1 times [2024-11-19 09:45:29,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:45:29,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791389522] [2024-11-19 09:45:29,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:45:29,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:45:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:45:29,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:45:29,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:45:29,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791389522] [2024-11-19 09:45:29,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791389522] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:45:29,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121132563] [2024-11-19 09:45:29,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:45:29,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:45:29,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:45:29,380 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) [2024-11-19 09:45:29,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 09:45:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:45:29,499 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 09:45:29,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:45:29,528 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 10 treesize of output 9 [2024-11-19 09:45:29,733 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:45:29,733 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:45:29,926 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:45:29,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121132563] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:45:29,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:45:29,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-11-19 09:45:29,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872958364] [2024-11-19 09:45:29,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:45:29,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 09:45:29,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:45:29,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 09:45:29,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-19 09:45:30,434 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 82 [2024-11-19 09:45:30,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 75 transitions, 190 flow. Second operand has 13 states, 13 states have (on average 45.61538461538461) internal successors, (593), 13 states have internal predecessors, (593), 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) [2024-11-19 09:45:30,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:45:30,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 82 [2024-11-19 09:45:30,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:45:30,728 INFO L124 PetriNetUnfolderBase]: 194/586 cut-off events. [2024-11-19 09:45:30,729 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-19 09:45:30,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 939 conditions, 586 events. 194/586 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3517 event pairs, 113 based on Foata normal form. 0/435 useless extension candidates. Maximal degree in co-relation 897. Up to 301 conditions per place. [2024-11-19 09:45:30,732 INFO L140 encePairwiseOnDemand]: 74/82 looper letters, 28 selfloop transitions, 16 changer transitions 0/81 dead transitions. [2024-11-19 09:45:30,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 81 transitions, 304 flow [2024-11-19 09:45:30,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 09:45:30,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 09:45:30,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 442 transitions. [2024-11-19 09:45:30,734 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5989159891598916 [2024-11-19 09:45:30,734 INFO L175 Difference]: Start difference. First operand has 76 places, 75 transitions, 190 flow. Second operand 9 states and 442 transitions. [2024-11-19 09:45:30,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 81 transitions, 304 flow [2024-11-19 09:45:30,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 81 transitions, 294 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:45:30,736 INFO L231 Difference]: Finished difference. Result has 80 places, 81 transitions, 238 flow [2024-11-19 09:45:30,736 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=238, PETRI_PLACES=80, PETRI_TRANSITIONS=81} [2024-11-19 09:45:30,737 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 2 predicate places. [2024-11-19 09:45:30,738 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 81 transitions, 238 flow [2024-11-19 09:45:30,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 45.61538461538461) internal successors, (593), 13 states have internal predecessors, (593), 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) [2024-11-19 09:45:30,738 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:45:30,738 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:45:30,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 09:45:30,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-19 09:45:30,944 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:45:30,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:45:30,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1991352511, now seen corresponding path program 1 times [2024-11-19 09:45:30,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:45:30,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231505207] [2024-11-19 09:45:30,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:45:30,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:45:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:45:31,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:45:31,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:45:31,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231505207] [2024-11-19 09:45:31,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231505207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:45:31,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:45:31,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:45:31,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262504028] [2024-11-19 09:45:31,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:45:31,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:45:31,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:45:31,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:45:31,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:45:31,273 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 82 [2024-11-19 09:45:31,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 81 transitions, 238 flow. Second operand has 5 states, 5 states have (on average 45.8) internal successors, (229), 5 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:45:31,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:45:31,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 82 [2024-11-19 09:45:31,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:45:31,451 INFO L124 PetriNetUnfolderBase]: 194/588 cut-off events. [2024-11-19 09:45:31,452 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-19 09:45:31,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 956 conditions, 588 events. 194/588 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3511 event pairs, 113 based on Foata normal form. 0/435 useless extension candidates. Maximal degree in co-relation 910. Up to 317 conditions per place. [2024-11-19 09:45:31,454 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 44 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2024-11-19 09:45:31,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 83 transitions, 338 flow [2024-11-19 09:45:31,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:45:31,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:45:31,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2024-11-19 09:45:31,456 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6585365853658537 [2024-11-19 09:45:31,456 INFO L175 Difference]: Start difference. First operand has 80 places, 81 transitions, 238 flow. Second operand 4 states and 216 transitions. [2024-11-19 09:45:31,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 83 transitions, 338 flow [2024-11-19 09:45:31,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 83 transitions, 319 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-19 09:45:31,458 INFO L231 Difference]: Finished difference. Result has 81 places, 82 transitions, 238 flow [2024-11-19 09:45:31,458 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=238, PETRI_PLACES=81, PETRI_TRANSITIONS=82} [2024-11-19 09:45:31,458 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 3 predicate places. [2024-11-19 09:45:31,459 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 82 transitions, 238 flow [2024-11-19 09:45:31,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.8) internal successors, (229), 5 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:45:31,459 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:45:31,459 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:45:31,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 09:45:31,459 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:45:31,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:45:31,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1865621323, now seen corresponding path program 1 times [2024-11-19 09:45:31,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:45:31,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772009864] [2024-11-19 09:45:31,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:45:31,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:45:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:45:31,572 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:45:31,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:45:31,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772009864] [2024-11-19 09:45:31,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772009864] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:45:31,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352338952] [2024-11-19 09:45:31,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:45:31,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:45:31,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:45:31,575 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) [2024-11-19 09:45:31,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 09:45:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:45:31,644 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 09:45:31,645 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:45:31,755 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:45:31,755 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:45:31,865 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:45:31,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352338952] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:45:31,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:45:31,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-19 09:45:31,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784765342] [2024-11-19 09:45:31,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:45:31,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 09:45:31,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:45:31,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 09:45:31,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-19 09:45:32,100 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-19 09:45:32,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 82 transitions, 238 flow. Second operand has 14 states, 14 states have (on average 47.785714285714285) internal successors, (669), 14 states have internal predecessors, (669), 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) [2024-11-19 09:45:32,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:45:32,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-19 09:45:32,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:45:32,449 INFO L124 PetriNetUnfolderBase]: 377/1135 cut-off events. [2024-11-19 09:45:32,450 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-19 09:45:32,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1818 conditions, 1135 events. 377/1135 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8187 event pairs, 225 based on Foata normal form. 1/851 useless extension candidates. Maximal degree in co-relation 903. Up to 301 conditions per place. [2024-11-19 09:45:32,455 INFO L140 encePairwiseOnDemand]: 72/82 looper letters, 59 selfloop transitions, 21 changer transitions 0/117 dead transitions. [2024-11-19 09:45:32,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 117 transitions, 499 flow [2024-11-19 09:45:32,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 09:45:32,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 09:45:32,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 485 transitions. [2024-11-19 09:45:32,456 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6571815718157181 [2024-11-19 09:45:32,456 INFO L175 Difference]: Start difference. First operand has 81 places, 82 transitions, 238 flow. Second operand 9 states and 485 transitions. [2024-11-19 09:45:32,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 117 transitions, 499 flow [2024-11-19 09:45:32,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 117 transitions, 491 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:45:32,458 INFO L231 Difference]: Finished difference. Result has 91 places, 92 transitions, 354 flow [2024-11-19 09:45:32,459 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=354, PETRI_PLACES=91, PETRI_TRANSITIONS=92} [2024-11-19 09:45:32,459 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 13 predicate places. [2024-11-19 09:45:32,459 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 92 transitions, 354 flow [2024-11-19 09:45:32,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 47.785714285714285) internal successors, (669), 14 states have internal predecessors, (669), 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) [2024-11-19 09:45:32,460 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:45:32,460 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:45:32,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 09:45:32,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:45:32,665 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:45:32,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:45:32,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1999684621, now seen corresponding path program 1 times [2024-11-19 09:45:32,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:45:32,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885395842] [2024-11-19 09:45:32,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:45:32,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:45:32,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:45:32,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:45:32,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:45:32,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885395842] [2024-11-19 09:45:32,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885395842] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:45:32,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967214716] [2024-11-19 09:45:32,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:45:32,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:45:32,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:45:32,961 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) [2024-11-19 09:45:32,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 09:45:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:45:33,031 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-19 09:45:33,032 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:45:33,120 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 [2024-11-19 09:45:33,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 09:45:33,127 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:45:33,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967214716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:45:33,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 09:45:33,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-11-19 09:45:33,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357740142] [2024-11-19 09:45:33,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:45:33,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:45:33,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:45:33,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:45:33,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 09:45:33,181 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 82 [2024-11-19 09:45:33,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 92 transitions, 354 flow. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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) [2024-11-19 09:45:33,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:45:33,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 82 [2024-11-19 09:45:33,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:45:33,314 INFO L124 PetriNetUnfolderBase]: 386/1170 cut-off events. [2024-11-19 09:45:33,314 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-19 09:45:33,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1911 conditions, 1170 events. 386/1170 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8483 event pairs, 226 based on Foata normal form. 0/865 useless extension candidates. Maximal degree in co-relation 932. Up to 630 conditions per place. [2024-11-19 09:45:33,322 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 55 selfloop transitions, 5 changer transitions 0/95 dead transitions. [2024-11-19 09:45:33,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 95 transitions, 480 flow [2024-11-19 09:45:33,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:45:33,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:45:33,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2024-11-19 09:45:33,323 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6585365853658537 [2024-11-19 09:45:33,323 INFO L175 Difference]: Start difference. First operand has 91 places, 92 transitions, 354 flow. Second operand 4 states and 216 transitions. [2024-11-19 09:45:33,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 95 transitions, 480 flow [2024-11-19 09:45:33,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 95 transitions, 476 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-19 09:45:33,327 INFO L231 Difference]: Finished difference. Result has 94 places, 94 transitions, 374 flow [2024-11-19 09:45:33,328 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=374, PETRI_PLACES=94, PETRI_TRANSITIONS=94} [2024-11-19 09:45:33,329 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 16 predicate places. [2024-11-19 09:45:33,329 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 94 transitions, 374 flow [2024-11-19 09:45:33,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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) [2024-11-19 09:45:33,330 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:45:33,330 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:45:33,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 09:45:33,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:45:33,531 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:45:33,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:45:33,531 INFO L85 PathProgramCache]: Analyzing trace with hash 2128402803, now seen corresponding path program 2 times [2024-11-19 09:45:33,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:45:33,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111593652] [2024-11-19 09:45:33,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:45:33,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:45:33,575 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:45:33,575 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:45:33,887 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 09:45:33,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:45:33,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111593652] [2024-11-19 09:45:33,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111593652] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:45:33,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325030707] [2024-11-19 09:45:33,888 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:45:33,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:45:33,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:45:33,889 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) [2024-11-19 09:45:33,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 09:45:33,970 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:45:33,970 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:45:33,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 09:45:33,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:45:34,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 09:45:34,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 36 [2024-11-19 09:45:34,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 14 treesize of output 3 [2024-11-19 09:45:34,182 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:45:34,183 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:45:34,288 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:45:34,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325030707] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:45:34,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:45:34,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-19 09:45:34,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202563647] [2024-11-19 09:45:34,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:45:34,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 09:45:34,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:45:34,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 09:45:34,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-19 09:45:35,023 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 82 [2024-11-19 09:45:35,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 94 transitions, 374 flow. Second operand has 17 states, 17 states have (on average 46.1764705882353) internal successors, (785), 17 states have internal predecessors, (785), 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) [2024-11-19 09:45:35,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:45:35,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 82 [2024-11-19 09:45:35,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:45:35,710 INFO L124 PetriNetUnfolderBase]: 380/1143 cut-off events. [2024-11-19 09:45:35,710 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-19 09:45:35,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1898 conditions, 1143 events. 380/1143 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8224 event pairs, 225 based on Foata normal form. 0/860 useless extension candidates. Maximal degree in co-relation 933. Up to 308 conditions per place. [2024-11-19 09:45:35,718 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 71 selfloop transitions, 19 changer transitions 0/125 dead transitions. [2024-11-19 09:45:35,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 125 transitions, 645 flow [2024-11-19 09:45:35,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 09:45:35,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-19 09:45:35,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 738 transitions. [2024-11-19 09:45:35,720 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-19 09:45:35,721 INFO L175 Difference]: Start difference. First operand has 94 places, 94 transitions, 374 flow. Second operand 15 states and 738 transitions. [2024-11-19 09:45:35,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 125 transitions, 645 flow [2024-11-19 09:45:35,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 125 transitions, 636 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:45:35,723 INFO L231 Difference]: Finished difference. Result has 107 places, 97 transitions, 433 flow [2024-11-19 09:45:35,723 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=433, PETRI_PLACES=107, PETRI_TRANSITIONS=97} [2024-11-19 09:45:35,724 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 29 predicate places. [2024-11-19 09:45:35,724 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 97 transitions, 433 flow [2024-11-19 09:45:35,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 46.1764705882353) internal successors, (785), 17 states have internal predecessors, (785), 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) [2024-11-19 09:45:35,725 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:45:35,725 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:45:35,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 09:45:35,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-19 09:45:35,929 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:45:35,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:45:35,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1846392371, now seen corresponding path program 1 times [2024-11-19 09:45:35,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:45:35,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989147786] [2024-11-19 09:45:35,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:45:35,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:45:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:45:35,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 09:45:35,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:45:35,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989147786] [2024-11-19 09:45:35,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989147786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:45:35,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:45:35,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:45:35,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404213638] [2024-11-19 09:45:35,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:45:35,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:45:35,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:45:35,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:45:35,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:45:35,996 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-19 09:45:35,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 97 transitions, 433 flow. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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) [2024-11-19 09:45:35,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:45:35,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-19 09:45:35,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:45:36,106 INFO L124 PetriNetUnfolderBase]: 385/1170 cut-off events. [2024-11-19 09:45:36,106 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-11-19 09:45:36,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1951 conditions, 1170 events. 385/1170 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8432 event pairs, 226 based on Foata normal form. 2/874 useless extension candidates. Maximal degree in co-relation 1022. Up to 627 conditions per place. [2024-11-19 09:45:36,113 INFO L140 encePairwiseOnDemand]: 78/82 looper letters, 56 selfloop transitions, 5 changer transitions 0/97 dead transitions. [2024-11-19 09:45:36,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 97 transitions, 553 flow [2024-11-19 09:45:36,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:45:36,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:45:36,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 221 transitions. [2024-11-19 09:45:36,114 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6737804878048781 [2024-11-19 09:45:36,114 INFO L175 Difference]: Start difference. First operand has 107 places, 97 transitions, 433 flow. Second operand 4 states and 221 transitions. [2024-11-19 09:45:36,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 97 transitions, 553 flow [2024-11-19 09:45:36,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 97 transitions, 495 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-11-19 09:45:36,116 INFO L231 Difference]: Finished difference. Result has 100 places, 96 transitions, 381 flow [2024-11-19 09:45:36,117 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=381, PETRI_PLACES=100, PETRI_TRANSITIONS=96} [2024-11-19 09:45:36,117 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 22 predicate places. [2024-11-19 09:45:36,117 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 96 transitions, 381 flow [2024-11-19 09:45:36,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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) [2024-11-19 09:45:36,117 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:45:36,118 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:45:36,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 09:45:36,118 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:45:36,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:45:36,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1846508568, now seen corresponding path program 1 times [2024-11-19 09:45:36,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:45:36,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489745519] [2024-11-19 09:45:36,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:45:36,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:45:36,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:45:36,251 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:45:36,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:45:36,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489745519] [2024-11-19 09:45:36,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489745519] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:45:36,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827931959] [2024-11-19 09:45:36,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:45:36,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:45:36,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:45:36,257 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) [2024-11-19 09:45:36,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 09:45:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:45:36,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 09:45:36,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:45:36,409 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:45:36,410 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:45:36,464 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:45:36,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827931959] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:45:36,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:45:36,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-19 09:45:36,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276995628] [2024-11-19 09:45:36,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:45:36,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 09:45:36,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:45:36,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 09:45:36,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-19 09:45:36,613 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-19 09:45:36,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 96 transitions, 381 flow. Second operand has 14 states, 14 states have (on average 48.0) internal successors, (672), 14 states have internal predecessors, (672), 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) [2024-11-19 09:45:36,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:45:36,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-19 09:45:36,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:45:36,887 INFO L124 PetriNetUnfolderBase]: 747/2251 cut-off events. [2024-11-19 09:45:36,887 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-11-19 09:45:36,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3638 conditions, 2251 events. 747/2251 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 19098 event pairs, 450 based on Foata normal form. 2/1690 useless extension candidates. Maximal degree in co-relation 1850. Up to 599 conditions per place. [2024-11-19 09:45:36,901 INFO L140 encePairwiseOnDemand]: 71/82 looper letters, 71 selfloop transitions, 23 changer transitions 0/130 dead transitions. [2024-11-19 09:45:36,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 130 transitions, 692 flow [2024-11-19 09:45:36,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 09:45:36,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 09:45:36,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 436 transitions. [2024-11-19 09:45:36,903 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6646341463414634 [2024-11-19 09:45:36,903 INFO L175 Difference]: Start difference. First operand has 100 places, 96 transitions, 381 flow. Second operand 8 states and 436 transitions. [2024-11-19 09:45:36,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 130 transitions, 692 flow [2024-11-19 09:45:36,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 130 transitions, 674 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:45:36,906 INFO L231 Difference]: Finished difference. Result has 107 places, 101 transitions, 471 flow [2024-11-19 09:45:36,906 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=471, PETRI_PLACES=107, PETRI_TRANSITIONS=101} [2024-11-19 09:45:36,906 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 29 predicate places. [2024-11-19 09:45:36,906 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 101 transitions, 471 flow [2024-11-19 09:45:36,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 48.0) internal successors, (672), 14 states have internal predecessors, (672), 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) [2024-11-19 09:45:36,907 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:45:36,907 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:45:36,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-19 09:45:37,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:45:37,112 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:45:37,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:45:37,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1050936814, now seen corresponding path program 2 times [2024-11-19 09:45:37,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:45:37,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830060083] [2024-11-19 09:45:37,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:45:37,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:45:37,129 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:45:37,130 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:45:37,292 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 09:45:37,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:45:37,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830060083] [2024-11-19 09:45:37,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830060083] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:45:37,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661165974] [2024-11-19 09:45:37,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:45:37,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:45:37,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:45:37,296 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) [2024-11-19 09:45:37,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 09:45:37,384 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:45:37,385 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:45:37,386 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 09:45:37,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:45:37,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 09:45:37,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 36 [2024-11-19 09:45:37,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 14 treesize of output 3 [2024-11-19 09:45:37,557 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:45:37,557 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:45:37,707 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:45:37,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661165974] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:45:37,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:45:37,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 15 [2024-11-19 09:45:37,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729313983] [2024-11-19 09:45:37,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:45:37,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 09:45:37,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:45:37,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 09:45:37,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-19 09:45:38,185 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 82 [2024-11-19 09:45:38,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 101 transitions, 471 flow. Second operand has 17 states, 17 states have (on average 46.529411764705884) internal successors, (791), 17 states have internal predecessors, (791), 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) [2024-11-19 09:45:38,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:45:38,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 82 [2024-11-19 09:45:38,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:45:38,792 INFO L124 PetriNetUnfolderBase]: 749/2255 cut-off events. [2024-11-19 09:45:38,793 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-11-19 09:45:38,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3691 conditions, 2255 events. 749/2255 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 19139 event pairs, 450 based on Foata normal form. 0/1692 useless extension candidates. Maximal degree in co-relation 1883. Up to 605 conditions per place. [2024-11-19 09:45:38,804 INFO L140 encePairwiseOnDemand]: 72/82 looper letters, 72 selfloop transitions, 26 changer transitions 0/133 dead transitions. [2024-11-19 09:45:38,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 133 transitions, 768 flow [2024-11-19 09:45:38,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 09:45:38,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-19 09:45:38,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 689 transitions. [2024-11-19 09:45:38,807 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6001742160278746 [2024-11-19 09:45:38,807 INFO L175 Difference]: Start difference. First operand has 107 places, 101 transitions, 471 flow. Second operand 14 states and 689 transitions. [2024-11-19 09:45:38,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 133 transitions, 768 flow [2024-11-19 09:45:38,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 133 transitions, 742 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-19 09:45:38,809 INFO L231 Difference]: Finished difference. Result has 119 places, 104 transitions, 523 flow [2024-11-19 09:45:38,809 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=523, PETRI_PLACES=119, PETRI_TRANSITIONS=104} [2024-11-19 09:45:38,810 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 41 predicate places. [2024-11-19 09:45:38,810 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 104 transitions, 523 flow [2024-11-19 09:45:38,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 46.529411764705884) internal successors, (791), 17 states have internal predecessors, (791), 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) [2024-11-19 09:45:38,810 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:45:38,811 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:45:38,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 09:45:39,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:45:39,015 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:45:39,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:45:39,017 INFO L85 PathProgramCache]: Analyzing trace with hash -673093502, now seen corresponding path program 1 times [2024-11-19 09:45:39,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:45:39,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398456916] [2024-11-19 09:45:39,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:45:39,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:45:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:45:39,228 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:45:39,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:45:39,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398456916] [2024-11-19 09:45:39,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398456916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:45:39,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:45:39,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 09:45:39,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073723362] [2024-11-19 09:45:39,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:45:39,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:45:39,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:45:39,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:45:39,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:45:39,308 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 82 [2024-11-19 09:45:39,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 104 transitions, 523 flow. Second operand has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 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) [2024-11-19 09:45:39,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:45:39,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 82 [2024-11-19 09:45:39,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:45:39,530 INFO L124 PetriNetUnfolderBase]: 851/2333 cut-off events. [2024-11-19 09:45:39,531 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2024-11-19 09:45:39,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3972 conditions, 2333 events. 851/2333 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 19039 event pairs, 524 based on Foata normal form. 0/1893 useless extension candidates. Maximal degree in co-relation 2074. Up to 1364 conditions per place. [2024-11-19 09:45:39,542 INFO L140 encePairwiseOnDemand]: 75/82 looper letters, 63 selfloop transitions, 7 changer transitions 0/100 dead transitions. [2024-11-19 09:45:39,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 100 transitions, 655 flow [2024-11-19 09:45:39,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:45:39,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:45:39,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 234 transitions. [2024-11-19 09:45:39,546 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5707317073170731 [2024-11-19 09:45:39,546 INFO L175 Difference]: Start difference. First operand has 119 places, 104 transitions, 523 flow. Second operand 5 states and 234 transitions. [2024-11-19 09:45:39,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 100 transitions, 655 flow [2024-11-19 09:45:39,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 100 transitions, 566 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-11-19 09:45:39,549 INFO L231 Difference]: Finished difference. Result has 107 places, 100 transitions, 440 flow [2024-11-19 09:45:39,550 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=440, PETRI_PLACES=107, PETRI_TRANSITIONS=100} [2024-11-19 09:45:39,550 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 29 predicate places. [2024-11-19 09:45:39,550 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 100 transitions, 440 flow [2024-11-19 09:45:39,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 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) [2024-11-19 09:45:39,550 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:45:39,551 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:45:39,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 09:45:39,551 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:45:39,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:45:39,551 INFO L85 PathProgramCache]: Analyzing trace with hash -673093501, now seen corresponding path program 1 times [2024-11-19 09:45:39,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:45:39,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920270166] [2024-11-19 09:45:39,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:45:39,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:45:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:45:39,916 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 09:45:39,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:45:39,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920270166] [2024-11-19 09:45:39,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920270166] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:45:39,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2488574] [2024-11-19 09:45:39,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:45:39,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:45:39,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:45:39,920 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) [2024-11-19 09:45:39,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 09:45:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:45:40,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-19 09:45:40,003 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:45:40,019 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 6 treesize of output 5 [2024-11-19 09:45:40,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 09:45:40,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2024-11-19 09:45:40,129 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-19 09:45:40,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-19 09:45:40,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 09:45:40,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2024-11-19 09:45:40,228 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-19 09:45:40,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-19 09:45:40,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 09:45:40,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2024-11-19 09:45:40,269 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 09:45:40,270 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 11 treesize of output 11 [2024-11-19 09:45:40,337 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 09:45:40,337 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:45:40,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2488574] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:45:40,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 09:45:40,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2024-11-19 09:45:40,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824009408] [2024-11-19 09:45:40,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:45:40,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 09:45:40,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:45:40,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 09:45:40,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:45:40,471 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 82 [2024-11-19 09:45:40,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 100 transitions, 440 flow. Second operand has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:45:40,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:45:40,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 82 [2024-11-19 09:45:40,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:45:40,678 INFO L124 PetriNetUnfolderBase]: 851/2209 cut-off events. [2024-11-19 09:45:40,678 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-11-19 09:45:40,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3798 conditions, 2209 events. 851/2209 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 17317 event pairs, 524 based on Foata normal form. 0/1767 useless extension candidates. Maximal degree in co-relation 1981. Up to 1378 conditions per place. [2024-11-19 09:45:40,689 INFO L140 encePairwiseOnDemand]: 76/82 looper letters, 67 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2024-11-19 09:45:40,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 96 transitions, 572 flow [2024-11-19 09:45:40,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:45:40,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:45:40,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 179 transitions. [2024-11-19 09:45:40,690 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5457317073170732 [2024-11-19 09:45:40,690 INFO L175 Difference]: Start difference. First operand has 107 places, 100 transitions, 440 flow. Second operand 4 states and 179 transitions. [2024-11-19 09:45:40,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 96 transitions, 572 flow [2024-11-19 09:45:40,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 96 transitions, 562 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:45:40,692 INFO L231 Difference]: Finished difference. Result has 103 places, 96 transitions, 428 flow [2024-11-19 09:45:40,692 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=428, PETRI_PLACES=103, PETRI_TRANSITIONS=96} [2024-11-19 09:45:40,693 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 25 predicate places. [2024-11-19 09:45:40,693 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 96 transitions, 428 flow [2024-11-19 09:45:40,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 6 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:45:40,693 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:45:40,693 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:45:40,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 09:45:40,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-19 09:45:40,894 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:45:40,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:45:40,894 INFO L85 PathProgramCache]: Analyzing trace with hash 608938947, now seen corresponding path program 1 times [2024-11-19 09:45:40,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:45:40,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902873199] [2024-11-19 09:45:40,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:45:40,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:45:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:45:40,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:45:40,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:45:40,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902873199] [2024-11-19 09:45:40,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902873199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:45:40,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:45:40,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 09:45:40,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731499578] [2024-11-19 09:45:40,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:45:40,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:45:40,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:45:40,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:45:40,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:45:41,052 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 82 [2024-11-19 09:45:41,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 96 transitions, 428 flow. Second operand has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 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) [2024-11-19 09:45:41,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:45:41,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 82 [2024-11-19 09:45:41,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:45:41,261 INFO L124 PetriNetUnfolderBase]: 867/2097 cut-off events. [2024-11-19 09:45:41,262 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-11-19 09:45:41,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3702 conditions, 2097 events. 867/2097 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 15373 event pairs, 532 based on Foata normal form. 0/1843 useless extension candidates. Maximal degree in co-relation 1933. Up to 1384 conditions per place. [2024-11-19 09:45:41,269 INFO L140 encePairwiseOnDemand]: 76/82 looper letters, 65 selfloop transitions, 5 changer transitions 0/92 dead transitions. [2024-11-19 09:45:41,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 92 transitions, 560 flow [2024-11-19 09:45:41,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:45:41,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:45:41,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2024-11-19 09:45:41,273 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5945121951219512 [2024-11-19 09:45:41,273 INFO L175 Difference]: Start difference. First operand has 103 places, 96 transitions, 428 flow. Second operand 4 states and 195 transitions. [2024-11-19 09:45:41,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 92 transitions, 560 flow [2024-11-19 09:45:41,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 92 transitions, 556 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:45:41,275 INFO L231 Difference]: Finished difference. Result has 100 places, 92 transitions, 426 flow [2024-11-19 09:45:41,275 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=426, PETRI_PLACES=100, PETRI_TRANSITIONS=92} [2024-11-19 09:45:41,276 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 22 predicate places. [2024-11-19 09:45:41,276 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 92 transitions, 426 flow [2024-11-19 09:45:41,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 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) [2024-11-19 09:45:41,276 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:45:41,276 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:45:41,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 09:45:41,279 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:45:41,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:45:41,280 INFO L85 PathProgramCache]: Analyzing trace with hash 608938948, now seen corresponding path program 1 times [2024-11-19 09:45:41,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:45:41,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385458983] [2024-11-19 09:45:41,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:45:41,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:45:41,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:45:41,550 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 09:45:41,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:45:41,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385458983] [2024-11-19 09:45:41,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385458983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:45:41,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327505955] [2024-11-19 09:45:41,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:45:41,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:45:41,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:45:41,553 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) [2024-11-19 09:45:41,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 09:45:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:45:41,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-19 09:45:41,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:45:41,653 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 6 treesize of output 5 [2024-11-19 09:45:41,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 09:45:41,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2024-11-19 09:45:41,715 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-19 09:45:41,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-19 09:45:41,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 09:45:41,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2024-11-19 09:45:41,787 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-19 09:45:41,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2024-11-19 09:45:41,827 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 09:45:41,827 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:45:41,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327505955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:45:41,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 09:45:41,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-11-19 09:45:41,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584767070] [2024-11-19 09:45:41,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:45:41,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:45:41,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:45:41,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:45:41,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:45:41,980 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 82 [2024-11-19 09:45:41,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 92 transitions, 426 flow. Second operand has 7 states, 7 states have (on average 38.285714285714285) internal successors, (268), 7 states have internal predecessors, (268), 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) [2024-11-19 09:45:41,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:45:41,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 82 [2024-11-19 09:45:41,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:45:42,239 INFO L124 PetriNetUnfolderBase]: 763/1849 cut-off events. [2024-11-19 09:45:42,240 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-11-19 09:45:42,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3294 conditions, 1849 events. 763/1849 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 13202 event pairs, 452 based on Foata normal form. 64/1650 useless extension candidates. Maximal degree in co-relation 1731. Up to 1220 conditions per place. [2024-11-19 09:45:42,247 INFO L140 encePairwiseOnDemand]: 75/82 looper letters, 62 selfloop transitions, 7 changer transitions 0/88 dead transitions. [2024-11-19 09:45:42,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 88 transitions, 556 flow [2024-11-19 09:45:42,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:45:42,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:45:42,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 218 transitions. [2024-11-19 09:45:42,249 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5317073170731708 [2024-11-19 09:45:42,249 INFO L175 Difference]: Start difference. First operand has 100 places, 92 transitions, 426 flow. Second operand 5 states and 218 transitions. [2024-11-19 09:45:42,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 88 transitions, 556 flow [2024-11-19 09:45:42,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 88 transitions, 550 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:45:42,252 INFO L231 Difference]: Finished difference. Result has 98 places, 88 transitions, 426 flow [2024-11-19 09:45:42,252 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=426, PETRI_PLACES=98, PETRI_TRANSITIONS=88} [2024-11-19 09:45:42,254 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 20 predicate places. [2024-11-19 09:45:42,254 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 88 transitions, 426 flow [2024-11-19 09:45:42,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 38.285714285714285) internal successors, (268), 7 states have internal predecessors, (268), 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) [2024-11-19 09:45:42,254 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:45:42,254 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:45:42,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-19 09:45:42,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 09:45:42,458 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:45:42,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:45:42,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1697239206, now seen corresponding path program 1 times [2024-11-19 09:45:42,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:45:42,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913067938] [2024-11-19 09:45:42,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:45:42,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:45:42,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:45:42,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:45:42,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:45:42,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913067938] [2024-11-19 09:45:42,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913067938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:45:42,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836145921] [2024-11-19 09:45:42,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:45:42,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:45:42,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:45:42,678 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) [2024-11-19 09:45:42,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 09:45:42,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:45:42,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-19 09:45:42,761 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:45:42,826 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 6 treesize of output 5 [2024-11-19 09:45:42,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 09:45:42,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-19 09:45:42,921 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 09:45:42,921 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 11 treesize of output 11 [2024-11-19 09:45:42,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:45:42,987 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:45:43,083 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 53 treesize of output 49 [2024-11-19 09:45:43,156 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 09:45:43,157 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 32 treesize of output 37 [2024-11-19 09:45:43,204 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:45:43,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836145921] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:45:43,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:45:43,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-19 09:45:43,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831631759] [2024-11-19 09:45:43,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:45:43,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 09:45:43,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:45:43,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 09:45:43,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-19 09:45:47,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-19 09:45:51,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-19 09:45:55,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-19 09:45:59,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-19 09:46:03,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-19 09:46:07,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-19 09:46:11,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-19 09:46:15,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-19 09:46:19,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-19 09:46:23,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-19 09:46:27,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-19 09:46:31,822 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 [1] [2024-11-19 09:46:32,206 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 82 [2024-11-19 09:46:32,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 88 transitions, 426 flow. Second operand has 18 states, 18 states have (on average 34.611111111111114) internal successors, (623), 18 states have internal predecessors, (623), 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) [2024-11-19 09:46:32,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:32,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 82 [2024-11-19 09:46:32,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:32,657 INFO L124 PetriNetUnfolderBase]: 1097/2501 cut-off events. [2024-11-19 09:46:32,658 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-11-19 09:46:32,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4530 conditions, 2501 events. 1097/2501 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 18539 event pairs, 492 based on Foata normal form. 0/2119 useless extension candidates. Maximal degree in co-relation 2579. Up to 733 conditions per place. [2024-11-19 09:46:32,670 INFO L140 encePairwiseOnDemand]: 67/82 looper letters, 92 selfloop transitions, 29 changer transitions 0/136 dead transitions. [2024-11-19 09:46:32,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 136 transitions, 808 flow [2024-11-19 09:46:32,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 09:46:32,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-19 09:46:32,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 512 transitions. [2024-11-19 09:46:32,672 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4803001876172608 [2024-11-19 09:46:32,672 INFO L175 Difference]: Start difference. First operand has 98 places, 88 transitions, 426 flow. Second operand 13 states and 512 transitions. [2024-11-19 09:46:32,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 136 transitions, 808 flow [2024-11-19 09:46:32,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 136 transitions, 798 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:46:32,675 INFO L231 Difference]: Finished difference. Result has 112 places, 95 transitions, 551 flow [2024-11-19 09:46:32,675 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=551, PETRI_PLACES=112, PETRI_TRANSITIONS=95} [2024-11-19 09:46:32,675 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 34 predicate places. [2024-11-19 09:46:32,676 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 95 transitions, 551 flow [2024-11-19 09:46:32,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 34.611111111111114) internal successors, (623), 18 states have internal predecessors, (623), 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) [2024-11-19 09:46:32,676 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:32,676 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:32,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 09:46:32,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:32,877 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:46:32,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:32,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1697239205, now seen corresponding path program 1 times [2024-11-19 09:46:32,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:32,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9190289] [2024-11-19 09:46:32,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:46:32,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:46:32,949 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:46:32,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:32,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9190289] [2024-11-19 09:46:32,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9190289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:46:32,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:46:32,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 09:46:32,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486633259] [2024-11-19 09:46:32,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:32,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:46:32,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:32,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:46:32,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:46:33,011 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 82 [2024-11-19 09:46:33,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 95 transitions, 551 flow. Second operand has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 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) [2024-11-19 09:46:33,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:33,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 82 [2024-11-19 09:46:33,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:33,179 INFO L124 PetriNetUnfolderBase]: 835/1935 cut-off events. [2024-11-19 09:46:33,180 INFO L125 PetriNetUnfolderBase]: For 292/312 co-relation queries the response was YES. [2024-11-19 09:46:33,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3804 conditions, 1935 events. 835/1935 cut-off events. For 292/312 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 13477 event pairs, 504 based on Foata normal form. 128/1863 useless extension candidates. Maximal degree in co-relation 2275. Up to 1304 conditions per place. [2024-11-19 09:46:33,188 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 60 selfloop transitions, 16 changer transitions 0/93 dead transitions. [2024-11-19 09:46:33,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 93 transitions, 699 flow [2024-11-19 09:46:33,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:46:33,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:46:33,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 246 transitions. [2024-11-19 09:46:33,189 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-19 09:46:33,189 INFO L175 Difference]: Start difference. First operand has 112 places, 95 transitions, 551 flow. Second operand 5 states and 246 transitions. [2024-11-19 09:46:33,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 93 transitions, 699 flow [2024-11-19 09:46:33,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 93 transitions, 655 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-19 09:46:33,192 INFO L231 Difference]: Finished difference. Result has 106 places, 93 transitions, 535 flow [2024-11-19 09:46:33,192 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=535, PETRI_PLACES=106, PETRI_TRANSITIONS=93} [2024-11-19 09:46:33,192 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 28 predicate places. [2024-11-19 09:46:33,192 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 93 transitions, 535 flow [2024-11-19 09:46:33,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 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) [2024-11-19 09:46:33,193 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:33,193 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:33,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 09:46:33,193 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:46:33,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:33,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1798167000, now seen corresponding path program 2 times [2024-11-19 09:46:33,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:33,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890175458] [2024-11-19 09:46:33,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:46:33,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:33,207 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 09:46:33,207 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:33,308 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 09:46:33,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:33,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890175458] [2024-11-19 09:46:33,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890175458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:46:33,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:46:33,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:46:33,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869722485] [2024-11-19 09:46:33,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:33,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:46:33,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:33,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:46:33,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:46:33,439 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 82 [2024-11-19 09:46:33,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 93 transitions, 535 flow. Second operand has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 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) [2024-11-19 09:46:33,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:33,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 82 [2024-11-19 09:46:33,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:33,609 INFO L124 PetriNetUnfolderBase]: 807/1821 cut-off events. [2024-11-19 09:46:33,609 INFO L125 PetriNetUnfolderBase]: For 345/345 co-relation queries the response was YES. [2024-11-19 09:46:33,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3553 conditions, 1821 events. 807/1821 cut-off events. For 345/345 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 12279 event pairs, 488 based on Foata normal form. 40/1676 useless extension candidates. Maximal degree in co-relation 2268. Up to 1276 conditions per place. [2024-11-19 09:46:33,618 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 65 selfloop transitions, 11 changer transitions 0/91 dead transitions. [2024-11-19 09:46:33,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 91 transitions, 675 flow [2024-11-19 09:46:33,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:46:33,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:46:33,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 246 transitions. [2024-11-19 09:46:33,619 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-19 09:46:33,619 INFO L175 Difference]: Start difference. First operand has 106 places, 93 transitions, 535 flow. Second operand 5 states and 246 transitions. [2024-11-19 09:46:33,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 91 transitions, 675 flow [2024-11-19 09:46:33,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 91 transitions, 644 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-19 09:46:33,622 INFO L231 Difference]: Finished difference. Result has 103 places, 91 transitions, 514 flow [2024-11-19 09:46:33,622 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=514, PETRI_PLACES=103, PETRI_TRANSITIONS=91} [2024-11-19 09:46:33,622 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 25 predicate places. [2024-11-19 09:46:33,622 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 91 transitions, 514 flow [2024-11-19 09:46:33,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 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) [2024-11-19 09:46:33,623 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:33,623 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:33,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-19 09:46:33,623 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:46:33,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:33,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1722736717, now seen corresponding path program 1 times [2024-11-19 09:46:33,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:33,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153648747] [2024-11-19 09:46:33,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:46:33,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:46:33,678 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 09:46:33,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:33,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153648747] [2024-11-19 09:46:33,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153648747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:46:33,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:46:33,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:46:33,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652523139] [2024-11-19 09:46:33,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:33,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:46:33,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:33,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:46:33,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:46:33,706 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 82 [2024-11-19 09:46:33,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 91 transitions, 514 flow. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 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) [2024-11-19 09:46:33,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:33,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 82 [2024-11-19 09:46:33,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:33,845 INFO L124 PetriNetUnfolderBase]: 807/1761 cut-off events. [2024-11-19 09:46:33,845 INFO L125 PetriNetUnfolderBase]: For 170/170 co-relation queries the response was YES. [2024-11-19 09:46:33,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3492 conditions, 1761 events. 807/1761 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 11454 event pairs, 488 based on Foata normal form. 0/1636 useless extension candidates. Maximal degree in co-relation 1852. Up to 1254 conditions per place. [2024-11-19 09:46:33,853 INFO L140 encePairwiseOnDemand]: 78/82 looper letters, 66 selfloop transitions, 10 changer transitions 0/89 dead transitions. [2024-11-19 09:46:33,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 89 transitions, 662 flow [2024-11-19 09:46:33,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:46:33,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:46:33,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 204 transitions. [2024-11-19 09:46:33,854 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6219512195121951 [2024-11-19 09:46:33,854 INFO L175 Difference]: Start difference. First operand has 103 places, 91 transitions, 514 flow. Second operand 4 states and 204 transitions. [2024-11-19 09:46:33,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 89 transitions, 662 flow [2024-11-19 09:46:33,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 89 transitions, 646 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:46:33,857 INFO L231 Difference]: Finished difference. Result has 101 places, 89 transitions, 514 flow [2024-11-19 09:46:33,857 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=514, PETRI_PLACES=101, PETRI_TRANSITIONS=89} [2024-11-19 09:46:33,857 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 23 predicate places. [2024-11-19 09:46:33,857 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 89 transitions, 514 flow [2024-11-19 09:46:33,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 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) [2024-11-19 09:46:33,857 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:33,858 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:33,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-19 09:46:33,858 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:46:33,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:33,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1722736718, now seen corresponding path program 1 times [2024-11-19 09:46:33,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:33,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372349590] [2024-11-19 09:46:33,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:46:33,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:46:34,033 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:46:34,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:34,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372349590] [2024-11-19 09:46:34,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372349590] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:34,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113923803] [2024-11-19 09:46:34,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:46:34,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:34,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:46:34,036 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) [2024-11-19 09:46:34,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 09:46:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:46:34,124 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-19 09:46:34,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:46:34,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:46:34,234 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:46:34,273 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 23 treesize of output 19 [2024-11-19 09:46:34,325 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:46:34,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113923803] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:46:34,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:46:34,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-11-19 09:46:34,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662389459] [2024-11-19 09:46:34,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:46:34,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-19 09:46:34,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:34,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-19 09:46:34,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2024-11-19 09:46:34,806 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 82 [2024-11-19 09:46:34,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 89 transitions, 514 flow. Second operand has 19 states, 19 states have (on average 46.473684210526315) internal successors, (883), 19 states have internal predecessors, (883), 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) [2024-11-19 09:46:34,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:34,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 82 [2024-11-19 09:46:34,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:35,199 INFO L124 PetriNetUnfolderBase]: 936/2004 cut-off events. [2024-11-19 09:46:35,200 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2024-11-19 09:46:35,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4001 conditions, 2004 events. 936/2004 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 13265 event pairs, 400 based on Foata normal form. 0/1833 useless extension candidates. Maximal degree in co-relation 2119. Up to 626 conditions per place. [2024-11-19 09:46:35,208 INFO L140 encePairwiseOnDemand]: 67/82 looper letters, 95 selfloop transitions, 29 changer transitions 0/135 dead transitions. [2024-11-19 09:46:35,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 135 transitions, 904 flow [2024-11-19 09:46:35,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 09:46:35,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 09:46:35,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 573 transitions. [2024-11-19 09:46:35,211 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6352549889135255 [2024-11-19 09:46:35,211 INFO L175 Difference]: Start difference. First operand has 101 places, 89 transitions, 514 flow. Second operand 11 states and 573 transitions. [2024-11-19 09:46:35,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 135 transitions, 904 flow [2024-11-19 09:46:35,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 135 transitions, 890 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:46:35,217 INFO L231 Difference]: Finished difference. Result has 113 places, 93 transitions, 610 flow [2024-11-19 09:46:35,218 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=610, PETRI_PLACES=113, PETRI_TRANSITIONS=93} [2024-11-19 09:46:35,218 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 35 predicate places. [2024-11-19 09:46:35,219 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 93 transitions, 610 flow [2024-11-19 09:46:35,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 46.473684210526315) internal successors, (883), 19 states have internal predecessors, (883), 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) [2024-11-19 09:46:35,220 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:35,221 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] [2024-11-19 09:46:35,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-19 09:46:35,421 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 [2024-11-19 09:46:35,421 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:46:35,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:35,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1111059252, now seen corresponding path program 1 times [2024-11-19 09:46:35,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:35,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525547926] [2024-11-19 09:46:35,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:46:35,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:46:35,519 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:46:35,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:35,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525547926] [2024-11-19 09:46:35,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525547926] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:35,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437693831] [2024-11-19 09:46:35,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:46:35,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:35,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:46:35,521 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) [2024-11-19 09:46:35,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 09:46:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:46:35,607 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 09:46:35,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:46:35,682 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:46:35,682 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:46:35,735 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:46:35,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437693831] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:46:35,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:46:35,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-19 09:46:35,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134064893] [2024-11-19 09:46:35,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:46:35,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 09:46:35,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:35,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 09:46:35,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-19 09:46:35,832 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-19 09:46:35,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 93 transitions, 610 flow. Second operand has 14 states, 14 states have (on average 48.42857142857143) internal successors, (678), 14 states have internal predecessors, (678), 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) [2024-11-19 09:46:35,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:35,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-19 09:46:35,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:36,172 INFO L124 PetriNetUnfolderBase]: 886/1928 cut-off events. [2024-11-19 09:46:36,172 INFO L125 PetriNetUnfolderBase]: For 385/399 co-relation queries the response was YES. [2024-11-19 09:46:36,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4107 conditions, 1928 events. 886/1928 cut-off events. For 385/399 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 12633 event pairs, 549 based on Foata normal form. 2/1803 useless extension candidates. Maximal degree in co-relation 2492. Up to 787 conditions per place. [2024-11-19 09:46:36,180 INFO L140 encePairwiseOnDemand]: 72/82 looper letters, 72 selfloop transitions, 35 changer transitions 0/120 dead transitions. [2024-11-19 09:46:36,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 120 transitions, 903 flow [2024-11-19 09:46:36,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 09:46:36,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 09:46:36,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 530 transitions. [2024-11-19 09:46:36,184 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6463414634146342 [2024-11-19 09:46:36,184 INFO L175 Difference]: Start difference. First operand has 113 places, 93 transitions, 610 flow. Second operand 10 states and 530 transitions. [2024-11-19 09:46:36,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 120 transitions, 903 flow [2024-11-19 09:46:36,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 120 transitions, 877 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-19 09:46:36,188 INFO L231 Difference]: Finished difference. Result has 117 places, 96 transitions, 661 flow [2024-11-19 09:46:36,188 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=661, PETRI_PLACES=117, PETRI_TRANSITIONS=96} [2024-11-19 09:46:36,188 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 39 predicate places. [2024-11-19 09:46:36,188 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 96 transitions, 661 flow [2024-11-19 09:46:36,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 48.42857142857143) internal successors, (678), 14 states have internal predecessors, (678), 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) [2024-11-19 09:46:36,189 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:36,189 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:36,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-19 09:46:36,393 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 [2024-11-19 09:46:36,393 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:46:36,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:36,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1831922601, now seen corresponding path program 2 times [2024-11-19 09:46:36,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:36,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660786498] [2024-11-19 09:46:36,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:46:36,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:36,407 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 09:46:36,408 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:36,512 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 09:46:36,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:36,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660786498] [2024-11-19 09:46:36,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660786498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:46:36,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:46:36,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:46:36,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780598971] [2024-11-19 09:46:36,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:36,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:46:36,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:36,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:46:36,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:46:36,607 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 82 [2024-11-19 09:46:36,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 96 transitions, 661 flow. Second operand has 5 states, 5 states have (on average 47.6) internal successors, (238), 5 states have internal predecessors, (238), 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) [2024-11-19 09:46:36,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:36,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 82 [2024-11-19 09:46:36,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:36,795 INFO L124 PetriNetUnfolderBase]: 843/1803 cut-off events. [2024-11-19 09:46:36,796 INFO L125 PetriNetUnfolderBase]: For 418/422 co-relation queries the response was YES. [2024-11-19 09:46:36,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3844 conditions, 1803 events. 843/1803 cut-off events. For 418/422 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 11317 event pairs, 523 based on Foata normal form. 40/1717 useless extension candidates. Maximal degree in co-relation 2499. Up to 1332 conditions per place. [2024-11-19 09:46:36,804 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 72 selfloop transitions, 11 changer transitions 0/94 dead transitions. [2024-11-19 09:46:36,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 94 transitions, 815 flow [2024-11-19 09:46:36,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:46:36,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:46:36,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 256 transitions. [2024-11-19 09:46:36,805 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.624390243902439 [2024-11-19 09:46:36,806 INFO L175 Difference]: Start difference. First operand has 117 places, 96 transitions, 661 flow. Second operand 5 states and 256 transitions. [2024-11-19 09:46:36,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 94 transitions, 815 flow [2024-11-19 09:46:36,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 94 transitions, 785 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-11-19 09:46:36,809 INFO L231 Difference]: Finished difference. Result has 112 places, 94 transitions, 641 flow [2024-11-19 09:46:36,810 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=641, PETRI_PLACES=112, PETRI_TRANSITIONS=94} [2024-11-19 09:46:36,810 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 34 predicate places. [2024-11-19 09:46:36,810 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 94 transitions, 641 flow [2024-11-19 09:46:36,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.6) internal successors, (238), 5 states have internal predecessors, (238), 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) [2024-11-19 09:46:36,811 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:36,811 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:36,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-19 09:46:36,811 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:46:36,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:36,811 INFO L85 PathProgramCache]: Analyzing trace with hash 2049972477, now seen corresponding path program 1 times [2024-11-19 09:46:36,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:36,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738285670] [2024-11-19 09:46:36,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:46:36,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:46:36,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 09:46:36,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:36,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738285670] [2024-11-19 09:46:36,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738285670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:46:36,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:46:36,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:46:36,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615241188] [2024-11-19 09:46:36,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:36,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:46:36,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:36,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:46:36,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:46:36,850 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 82 [2024-11-19 09:46:36,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 94 transitions, 641 flow. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2024-11-19 09:46:36,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:36,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 82 [2024-11-19 09:46:36,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:37,176 INFO L124 PetriNetUnfolderBase]: 1301/2475 cut-off events. [2024-11-19 09:46:37,176 INFO L125 PetriNetUnfolderBase]: For 289/293 co-relation queries the response was YES. [2024-11-19 09:46:37,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5370 conditions, 2475 events. 1301/2475 cut-off events. For 289/293 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 15025 event pairs, 631 based on Foata normal form. 0/2269 useless extension candidates. Maximal degree in co-relation 2804. Up to 1520 conditions per place. [2024-11-19 09:46:37,199 INFO L140 encePairwiseOnDemand]: 78/82 looper letters, 96 selfloop transitions, 3 changer transitions 0/107 dead transitions. [2024-11-19 09:46:37,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 107 transitions, 873 flow [2024-11-19 09:46:37,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:46:37,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:46:37,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 179 transitions. [2024-11-19 09:46:37,201 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7276422764227642 [2024-11-19 09:46:37,201 INFO L175 Difference]: Start difference. First operand has 112 places, 94 transitions, 641 flow. Second operand 3 states and 179 transitions. [2024-11-19 09:46:37,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 107 transitions, 873 flow [2024-11-19 09:46:37,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 107 transitions, 855 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 09:46:37,207 INFO L231 Difference]: Finished difference. Result has 113 places, 96 transitions, 645 flow [2024-11-19 09:46:37,207 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=645, PETRI_PLACES=113, PETRI_TRANSITIONS=96} [2024-11-19 09:46:37,208 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 35 predicate places. [2024-11-19 09:46:37,208 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 96 transitions, 645 flow [2024-11-19 09:46:37,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2024-11-19 09:46:37,208 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:37,208 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:37,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-19 09:46:37,208 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:46:37,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:37,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1411249289, now seen corresponding path program 1 times [2024-11-19 09:46:37,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:37,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461859330] [2024-11-19 09:46:37,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:46:37,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:37,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:46:37,276 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 09:46:37,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:37,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461859330] [2024-11-19 09:46:37,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461859330] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:46:37,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:46:37,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:46:37,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817510098] [2024-11-19 09:46:37,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:37,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:46:37,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:37,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:46:37,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:46:37,295 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 82 [2024-11-19 09:46:37,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 96 transitions, 645 flow. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:37,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:37,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 82 [2024-11-19 09:46:37,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:37,795 INFO L124 PetriNetUnfolderBase]: 1383/2595 cut-off events. [2024-11-19 09:46:37,795 INFO L125 PetriNetUnfolderBase]: For 708/766 co-relation queries the response was YES. [2024-11-19 09:46:37,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6248 conditions, 2595 events. 1383/2595 cut-off events. For 708/766 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 15803 event pairs, 746 based on Foata normal form. 58/2473 useless extension candidates. Maximal degree in co-relation 4728. Up to 1684 conditions per place. [2024-11-19 09:46:37,865 INFO L140 encePairwiseOnDemand]: 78/82 looper letters, 97 selfloop transitions, 3 changer transitions 0/109 dead transitions. [2024-11-19 09:46:37,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 109 transitions, 887 flow [2024-11-19 09:46:37,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:46:37,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:46:37,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 178 transitions. [2024-11-19 09:46:37,866 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7235772357723578 [2024-11-19 09:46:37,866 INFO L175 Difference]: Start difference. First operand has 113 places, 96 transitions, 645 flow. Second operand 3 states and 178 transitions. [2024-11-19 09:46:37,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 109 transitions, 887 flow [2024-11-19 09:46:37,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 109 transitions, 879 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:46:37,871 INFO L231 Difference]: Finished difference. Result has 115 places, 98 transitions, 661 flow [2024-11-19 09:46:37,871 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=661, PETRI_PLACES=115, PETRI_TRANSITIONS=98} [2024-11-19 09:46:37,872 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 37 predicate places. [2024-11-19 09:46:37,872 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 98 transitions, 661 flow [2024-11-19 09:46:37,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:37,872 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:37,872 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:37,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-19 09:46:37,872 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:46:37,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:37,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1482770463, now seen corresponding path program 1 times [2024-11-19 09:46:37,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:37,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131159455] [2024-11-19 09:46:37,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:46:37,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:46:38,274 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 09:46:38,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:38,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131159455] [2024-11-19 09:46:38,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131159455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:46:38,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:46:38,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:46:38,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823735286] [2024-11-19 09:46:38,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:38,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:46:38,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:38,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:46:38,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:46:38,500 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-19 09:46:38,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 98 transitions, 661 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 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) [2024-11-19 09:46:38,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:38,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-19 09:46:38,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:39,441 INFO L124 PetriNetUnfolderBase]: 3111/6337 cut-off events. [2024-11-19 09:46:39,442 INFO L125 PetriNetUnfolderBase]: For 2212/2432 co-relation queries the response was YES. [2024-11-19 09:46:39,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15765 conditions, 6337 events. 3111/6337 cut-off events. For 2212/2432 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 52013 event pairs, 119 based on Foata normal form. 224/6497 useless extension candidates. Maximal degree in co-relation 11582. Up to 1464 conditions per place. [2024-11-19 09:46:39,465 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 172 selfloop transitions, 6 changer transitions 7/198 dead transitions. [2024-11-19 09:46:39,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 198 transitions, 1391 flow [2024-11-19 09:46:39,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 09:46:39,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 09:46:39,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 572 transitions. [2024-11-19 09:46:39,469 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.697560975609756 [2024-11-19 09:46:39,469 INFO L175 Difference]: Start difference. First operand has 115 places, 98 transitions, 661 flow. Second operand 10 states and 572 transitions. [2024-11-19 09:46:39,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 198 transitions, 1391 flow [2024-11-19 09:46:39,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 198 transitions, 1373 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:46:39,499 INFO L231 Difference]: Finished difference. Result has 130 places, 103 transitions, 708 flow [2024-11-19 09:46:39,499 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=708, PETRI_PLACES=130, PETRI_TRANSITIONS=103} [2024-11-19 09:46:39,499 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 52 predicate places. [2024-11-19 09:46:39,500 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 103 transitions, 708 flow [2024-11-19 09:46:39,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 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) [2024-11-19 09:46:39,500 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:39,501 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:39,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-19 09:46:39,501 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:46:39,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:39,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1744923697, now seen corresponding path program 2 times [2024-11-19 09:46:39,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:39,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265656452] [2024-11-19 09:46:39,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:46:39,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:39,519 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 09:46:39,522 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:40,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 09:46:40,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:40,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265656452] [2024-11-19 09:46:40,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265656452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:46:40,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:46:40,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:46:40,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992135570] [2024-11-19 09:46:40,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:40,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:46:40,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:40,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:46:40,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:46:40,766 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-19 09:46:40,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 103 transitions, 708 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 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) [2024-11-19 09:46:40,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:40,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-19 09:46:40,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:41,900 INFO L124 PetriNetUnfolderBase]: 3242/6884 cut-off events. [2024-11-19 09:46:41,901 INFO L125 PetriNetUnfolderBase]: For 4244/4490 co-relation queries the response was YES. [2024-11-19 09:46:41,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18485 conditions, 6884 events. 3242/6884 cut-off events. For 4244/4490 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 59429 event pairs, 372 based on Foata normal form. 250/7056 useless extension candidates. Maximal degree in co-relation 18284. Up to 3373 conditions per place. [2024-11-19 09:46:41,954 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 145 selfloop transitions, 8 changer transitions 6/172 dead transitions. [2024-11-19 09:46:41,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 172 transitions, 1317 flow [2024-11-19 09:46:41,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 09:46:41,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 09:46:41,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 550 transitions. [2024-11-19 09:46:41,960 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6707317073170732 [2024-11-19 09:46:41,960 INFO L175 Difference]: Start difference. First operand has 130 places, 103 transitions, 708 flow. Second operand 10 states and 550 transitions. [2024-11-19 09:46:41,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 172 transitions, 1317 flow [2024-11-19 09:46:42,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 172 transitions, 1298 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-11-19 09:46:42,045 INFO L231 Difference]: Finished difference. Result has 139 places, 105 transitions, 740 flow [2024-11-19 09:46:42,046 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=740, PETRI_PLACES=139, PETRI_TRANSITIONS=105} [2024-11-19 09:46:42,046 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 61 predicate places. [2024-11-19 09:46:42,046 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 105 transitions, 740 flow [2024-11-19 09:46:42,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 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) [2024-11-19 09:46:42,048 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:42,052 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:42,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-19 09:46:42,052 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:46:42,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:42,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1329705323, now seen corresponding path program 3 times [2024-11-19 09:46:42,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:42,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559457288] [2024-11-19 09:46:42,053 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:46:42,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:42,067 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 09:46:42,067 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:42,495 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 09:46:42,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:42,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559457288] [2024-11-19 09:46:42,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559457288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:46:42,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:46:42,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:46:42,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401779348] [2024-11-19 09:46:42,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:42,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:46:42,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:42,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:46:42,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:46:42,926 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-19 09:46:42,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 105 transitions, 740 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 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) [2024-11-19 09:46:42,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:42,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-19 09:46:42,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:44,113 INFO L124 PetriNetUnfolderBase]: 3507/7693 cut-off events. [2024-11-19 09:46:44,113 INFO L125 PetriNetUnfolderBase]: For 8082/8398 co-relation queries the response was YES. [2024-11-19 09:46:44,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21864 conditions, 7693 events. 3507/7693 cut-off events. For 8082/8398 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 69551 event pairs, 706 based on Foata normal form. 320/7877 useless extension candidates. Maximal degree in co-relation 21516. Up to 3788 conditions per place. [2024-11-19 09:46:44,176 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 144 selfloop transitions, 11 changer transitions 7/175 dead transitions. [2024-11-19 09:46:44,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 175 transitions, 1367 flow [2024-11-19 09:46:44,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 09:46:44,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 09:46:44,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 557 transitions. [2024-11-19 09:46:44,178 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6792682926829269 [2024-11-19 09:46:44,178 INFO L175 Difference]: Start difference. First operand has 139 places, 105 transitions, 740 flow. Second operand 10 states and 557 transitions. [2024-11-19 09:46:44,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 175 transitions, 1367 flow [2024-11-19 09:46:44,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 175 transitions, 1311 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-11-19 09:46:44,253 INFO L231 Difference]: Finished difference. Result has 146 places, 107 transitions, 771 flow [2024-11-19 09:46:44,253 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=771, PETRI_PLACES=146, PETRI_TRANSITIONS=107} [2024-11-19 09:46:44,254 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 68 predicate places. [2024-11-19 09:46:44,254 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 107 transitions, 771 flow [2024-11-19 09:46:44,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 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) [2024-11-19 09:46:44,254 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:44,255 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:44,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-19 09:46:44,255 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:46:44,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:44,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1496440587, now seen corresponding path program 4 times [2024-11-19 09:46:44,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:44,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027077873] [2024-11-19 09:46:44,255 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:46:44,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:44,269 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:46:44,270 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:44,546 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 09:46:44,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:44,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027077873] [2024-11-19 09:46:44,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027077873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:46:44,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:46:44,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:46:44,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111593605] [2024-11-19 09:46:44,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:44,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:46:44,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:44,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:46:44,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:46:44,997 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-19 09:46:44,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 107 transitions, 771 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 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) [2024-11-19 09:46:44,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:44,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-19 09:46:44,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:46,478 INFO L124 PetriNetUnfolderBase]: 3688/8382 cut-off events. [2024-11-19 09:46:46,478 INFO L125 PetriNetUnfolderBase]: For 11098/11364 co-relation queries the response was YES. [2024-11-19 09:46:46,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24269 conditions, 8382 events. 3688/8382 cut-off events. For 11098/11364 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 78471 event pairs, 496 based on Foata normal form. 270/8565 useless extension candidates. Maximal degree in co-relation 23870. Up to 4763 conditions per place. [2024-11-19 09:46:46,530 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 150 selfloop transitions, 11 changer transitions 6/180 dead transitions. [2024-11-19 09:46:46,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 180 transitions, 1483 flow [2024-11-19 09:46:46,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 09:46:46,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 09:46:46,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 556 transitions. [2024-11-19 09:46:46,532 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6780487804878049 [2024-11-19 09:46:46,532 INFO L175 Difference]: Start difference. First operand has 146 places, 107 transitions, 771 flow. Second operand 10 states and 556 transitions. [2024-11-19 09:46:46,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 180 transitions, 1483 flow [2024-11-19 09:46:46,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 180 transitions, 1418 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-11-19 09:46:46,594 INFO L231 Difference]: Finished difference. Result has 153 places, 110 transitions, 806 flow [2024-11-19 09:46:46,595 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=806, PETRI_PLACES=153, PETRI_TRANSITIONS=110} [2024-11-19 09:46:46,595 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 75 predicate places. [2024-11-19 09:46:46,595 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 110 transitions, 806 flow [2024-11-19 09:46:46,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 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) [2024-11-19 09:46:46,595 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:46,595 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:46,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-19 09:46:46,596 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:46:46,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:46,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1797994299, now seen corresponding path program 5 times [2024-11-19 09:46:46,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:46,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696029223] [2024-11-19 09:46:46,596 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:46:46,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:46,619 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:46:46,619 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:47,076 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 09:46:47,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:47,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696029223] [2024-11-19 09:46:47,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696029223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:46:47,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:46:47,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:46:47,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069599681] [2024-11-19 09:46:47,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:47,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:46:47,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:47,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:46:47,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:46:47,490 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-19 09:46:47,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 110 transitions, 806 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 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) [2024-11-19 09:46:47,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:47,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-19 09:46:47,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:48,787 INFO L124 PetriNetUnfolderBase]: 3871/8809 cut-off events. [2024-11-19 09:46:48,787 INFO L125 PetriNetUnfolderBase]: For 17161/17465 co-relation queries the response was YES. [2024-11-19 09:46:48,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26760 conditions, 8809 events. 3871/8809 cut-off events. For 17161/17465 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 83359 event pairs, 782 based on Foata normal form. 308/8983 useless extension candidates. Maximal degree in co-relation 26310. Up to 5340 conditions per place. [2024-11-19 09:46:48,851 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 150 selfloop transitions, 14 changer transitions 7/184 dead transitions. [2024-11-19 09:46:48,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 184 transitions, 1525 flow [2024-11-19 09:46:48,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 09:46:48,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 09:46:48,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 559 transitions. [2024-11-19 09:46:48,853 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6817073170731708 [2024-11-19 09:46:48,853 INFO L175 Difference]: Start difference. First operand has 153 places, 110 transitions, 806 flow. Second operand 10 states and 559 transitions. [2024-11-19 09:46:48,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 184 transitions, 1525 flow [2024-11-19 09:46:48,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 184 transitions, 1450 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-11-19 09:46:48,925 INFO L231 Difference]: Finished difference. Result has 159 places, 113 transitions, 846 flow [2024-11-19 09:46:48,926 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=846, PETRI_PLACES=159, PETRI_TRANSITIONS=113} [2024-11-19 09:46:48,927 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 81 predicate places. [2024-11-19 09:46:48,927 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 113 transitions, 846 flow [2024-11-19 09:46:48,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 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) [2024-11-19 09:46:48,927 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:48,927 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:48,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-19 09:46:48,928 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:46:48,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:48,928 INFO L85 PathProgramCache]: Analyzing trace with hash -155166607, now seen corresponding path program 6 times [2024-11-19 09:46:48,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:48,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318880392] [2024-11-19 09:46:48,929 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:46:48,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:48,946 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-19 09:46:48,946 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:49,284 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 09:46:49,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:49,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318880392] [2024-11-19 09:46:49,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318880392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:46:49,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:46:49,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:46:49,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819955608] [2024-11-19 09:46:49,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:49,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:46:49,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:49,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:46:49,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:46:49,598 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-19 09:46:49,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 113 transitions, 846 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 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) [2024-11-19 09:46:49,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:49,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-19 09:46:49,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:51,245 INFO L124 PetriNetUnfolderBase]: 4597/10449 cut-off events. [2024-11-19 09:46:51,245 INFO L125 PetriNetUnfolderBase]: For 25852/26226 co-relation queries the response was YES. [2024-11-19 09:46:51,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32597 conditions, 10449 events. 4597/10449 cut-off events. For 25852/26226 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 102185 event pairs, 865 based on Foata normal form. 378/10680 useless extension candidates. Maximal degree in co-relation 32064. Up to 5711 conditions per place. [2024-11-19 09:46:51,369 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 161 selfloop transitions, 14 changer transitions 6/194 dead transitions. [2024-11-19 09:46:51,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 194 transitions, 1659 flow [2024-11-19 09:46:51,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 09:46:51,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 09:46:51,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 561 transitions. [2024-11-19 09:46:51,370 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6841463414634147 [2024-11-19 09:46:51,370 INFO L175 Difference]: Start difference. First operand has 159 places, 113 transitions, 846 flow. Second operand 10 states and 561 transitions. [2024-11-19 09:46:51,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 194 transitions, 1659 flow [2024-11-19 09:46:51,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 194 transitions, 1573 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-11-19 09:46:51,621 INFO L231 Difference]: Finished difference. Result has 167 places, 117 transitions, 903 flow [2024-11-19 09:46:51,621 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=903, PETRI_PLACES=167, PETRI_TRANSITIONS=117} [2024-11-19 09:46:51,621 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 89 predicate places. [2024-11-19 09:46:51,622 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 117 transitions, 903 flow [2024-11-19 09:46:51,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 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) [2024-11-19 09:46:51,622 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:51,622 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:51,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-19 09:46:51,622 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:46:51,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:51,622 INFO L85 PathProgramCache]: Analyzing trace with hash 2066260869, now seen corresponding path program 7 times [2024-11-19 09:46:51,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:51,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410245693] [2024-11-19 09:46:51,623 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:46:51,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:46:52,000 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 09:46:52,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:52,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410245693] [2024-11-19 09:46:52,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410245693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:46:52,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:46:52,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:46:52,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38608311] [2024-11-19 09:46:52,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:52,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:46:52,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:52,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:46:52,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:46:52,303 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-19 09:46:52,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 117 transitions, 903 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 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) [2024-11-19 09:46:52,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:52,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-19 09:46:52,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:53,741 INFO L124 PetriNetUnfolderBase]: 4606/10434 cut-off events. [2024-11-19 09:46:53,742 INFO L125 PetriNetUnfolderBase]: For 30258/30656 co-relation queries the response was YES. [2024-11-19 09:46:53,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33356 conditions, 10434 events. 4606/10434 cut-off events. For 30258/30656 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 101452 event pairs, 1008 based on Foata normal form. 402/10668 useless extension candidates. Maximal degree in co-relation 32802. Up to 5836 conditions per place. [2024-11-19 09:46:53,835 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 165 selfloop transitions, 15 changer transitions 7/200 dead transitions. [2024-11-19 09:46:53,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 200 transitions, 1736 flow [2024-11-19 09:46:53,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 09:46:53,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 09:46:53,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 563 transitions. [2024-11-19 09:46:53,836 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6865853658536586 [2024-11-19 09:46:53,837 INFO L175 Difference]: Start difference. First operand has 167 places, 117 transitions, 903 flow. Second operand 10 states and 563 transitions. [2024-11-19 09:46:53,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 200 transitions, 1736 flow [2024-11-19 09:46:53,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 200 transitions, 1687 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-11-19 09:46:53,965 INFO L231 Difference]: Finished difference. Result has 177 places, 121 transitions, 978 flow [2024-11-19 09:46:53,966 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=875, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=978, PETRI_PLACES=177, PETRI_TRANSITIONS=121} [2024-11-19 09:46:53,966 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 99 predicate places. [2024-11-19 09:46:53,967 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 121 transitions, 978 flow [2024-11-19 09:46:53,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 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) [2024-11-19 09:46:53,967 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:53,967 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:53,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-19 09:46:53,967 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:46:53,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:53,968 INFO L85 PathProgramCache]: Analyzing trace with hash -235932871, now seen corresponding path program 8 times [2024-11-19 09:46:53,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:53,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491418735] [2024-11-19 09:46:53,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:46:53,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:53,982 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 09:46:53,982 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:54,294 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 09:46:54,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:54,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491418735] [2024-11-19 09:46:54,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491418735] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:46:54,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:46:54,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:46:54,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083156249] [2024-11-19 09:46:54,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:54,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:46:54,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:54,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:46:54,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:46:54,656 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-19 09:46:54,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 121 transitions, 978 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 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) [2024-11-19 09:46:54,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:54,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-19 09:46:54,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:56,105 INFO L124 PetriNetUnfolderBase]: 4623/10447 cut-off events. [2024-11-19 09:46:56,105 INFO L125 PetriNetUnfolderBase]: For 38160/38580 co-relation queries the response was YES. [2024-11-19 09:46:56,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34807 conditions, 10447 events. 4623/10447 cut-off events. For 38160/38580 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 100942 event pairs, 1489 based on Foata normal form. 424/10622 useless extension candidates. Maximal degree in co-relation 34232. Up to 4852 conditions per place. [2024-11-19 09:46:56,228 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 175 selfloop transitions, 13 changer transitions 6/207 dead transitions. [2024-11-19 09:46:56,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 207 transitions, 1854 flow [2024-11-19 09:46:56,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 09:46:56,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 09:46:56,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 568 transitions. [2024-11-19 09:46:56,229 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6926829268292682 [2024-11-19 09:46:56,230 INFO L175 Difference]: Start difference. First operand has 177 places, 121 transitions, 978 flow. Second operand 10 states and 568 transitions. [2024-11-19 09:46:56,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 207 transitions, 1854 flow [2024-11-19 09:46:56,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 207 transitions, 1805 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-11-19 09:46:56,380 INFO L231 Difference]: Finished difference. Result has 188 places, 126 transitions, 1066 flow [2024-11-19 09:46:56,380 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=945, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1066, PETRI_PLACES=188, PETRI_TRANSITIONS=126} [2024-11-19 09:46:56,381 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 110 predicate places. [2024-11-19 09:46:56,381 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 126 transitions, 1066 flow [2024-11-19 09:46:56,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 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) [2024-11-19 09:46:56,381 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:56,381 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:56,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-19 09:46:56,381 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:46:56,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:56,382 INFO L85 PathProgramCache]: Analyzing trace with hash -2013413273, now seen corresponding path program 9 times [2024-11-19 09:46:56,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:56,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081110215] [2024-11-19 09:46:56,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:46:56,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:56,397 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 09:46:56,398 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:56,744 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 09:46:56,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:56,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081110215] [2024-11-19 09:46:56,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081110215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:46:56,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:46:56,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:46:56,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886780348] [2024-11-19 09:46:56,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:56,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:46:56,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:56,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:46:56,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:46:56,960 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-19 09:46:56,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 126 transitions, 1066 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 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) [2024-11-19 09:46:56,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:56,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-19 09:46:56,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:58,463 INFO L124 PetriNetUnfolderBase]: 4618/10538 cut-off events. [2024-11-19 09:46:58,463 INFO L125 PetriNetUnfolderBase]: For 43426/43820 co-relation queries the response was YES. [2024-11-19 09:46:58,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36049 conditions, 10538 events. 4618/10538 cut-off events. For 43426/43820 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 103035 event pairs, 1048 based on Foata normal form. 398/10772 useless extension candidates. Maximal degree in co-relation 35468. Up to 5900 conditions per place. [2024-11-19 09:46:58,540 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 171 selfloop transitions, 20 changer transitions 6/210 dead transitions. [2024-11-19 09:46:58,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 210 transitions, 1944 flow [2024-11-19 09:46:58,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 09:46:58,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 09:46:58,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 559 transitions. [2024-11-19 09:46:58,541 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6817073170731708 [2024-11-19 09:46:58,541 INFO L175 Difference]: Start difference. First operand has 188 places, 126 transitions, 1066 flow. Second operand 10 states and 559 transitions. [2024-11-19 09:46:58,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 210 transitions, 1944 flow [2024-11-19 09:46:58,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 210 transitions, 1883 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-11-19 09:46:58,677 INFO L231 Difference]: Finished difference. Result has 198 places, 129 transitions, 1138 flow [2024-11-19 09:46:58,678 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=1029, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1138, PETRI_PLACES=198, PETRI_TRANSITIONS=129} [2024-11-19 09:46:58,678 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 120 predicate places. [2024-11-19 09:46:58,678 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 129 transitions, 1138 flow [2024-11-19 09:46:58,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 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) [2024-11-19 09:46:58,678 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:58,678 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:58,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-19 09:46:58,679 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-19 09:46:58,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:58,679 INFO L85 PathProgramCache]: Analyzing trace with hash -529993617, now seen corresponding path program 10 times [2024-11-19 09:46:58,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:58,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14643521] [2024-11-19 09:46:58,679 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:46:58,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:58,694 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:46:58,694 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:58,943 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 09:46:58,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:58,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14643521] [2024-11-19 09:46:58,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14643521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:46:58,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:46:58,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 09:46:58,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301933197] [2024-11-19 09:46:58,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:58,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:46:58,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:58,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:46:58,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:46:59,180 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 82 [2024-11-19 09:46:59,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 129 transitions, 1138 flow. Second operand has 10 states, 10 states have (on average 49.2) internal successors, (492), 10 states have internal predecessors, (492), 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) [2024-11-19 09:46:59,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:59,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 82 [2024-11-19 09:46:59,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand