./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/13-privatized_01-priv_nr_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/13-privatized_01-priv_nr_true.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2f12d466eb2f537fd698a609dad75de92993414755aa8aadb35a91de87d65611 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:39:36,928 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:39:37,000 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:39:37,018 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:39:37,019 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:39:37,050 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:39:37,050 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:39:37,051 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:39:37,051 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:39:37,052 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:39:37,052 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:39:37,052 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:39:37,053 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:39:37,053 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:39:37,054 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:39:37,054 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:39:37,057 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:39:37,058 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:39:37,058 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:39:37,061 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:39:37,061 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:39:37,062 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:39:37,062 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:39:37,062 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:39:37,062 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:39:37,063 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:39:37,063 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:39:37,063 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:39:37,063 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:39:37,064 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:39:37,064 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:39:37,064 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:39:37,064 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:39:37,065 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:39:37,065 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:39:37,065 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:39:37,066 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:39:37,066 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:39:37,066 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:39:37,066 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:39:37,067 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:39:37,067 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:39:37,067 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f12d466eb2f537fd698a609dad75de92993414755aa8aadb35a91de87d65611 [2024-11-19 01:39:37,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:39:37,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:39:37,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:39:37,383 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:39:37,384 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:39:37,385 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/13-privatized_01-priv_nr_true.i [2024-11-19 01:39:38,879 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:39:39,172 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:39:39,173 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_01-priv_nr_true.i [2024-11-19 01:39:39,199 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/deb465555/d7ef1eac789b4b6ebef127d9a92516c0/FLAGfdac60965 [2024-11-19 01:39:39,218 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/deb465555/d7ef1eac789b4b6ebef127d9a92516c0 [2024-11-19 01:39:39,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:39:39,223 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:39:39,226 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:39:39,226 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:39:39,232 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:39:39,233 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:39:39" (1/1) ... [2024-11-19 01:39:39,235 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1759b32e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:39, skipping insertion in model container [2024-11-19 01:39:39,235 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:39:39" (1/1) ... [2024-11-19 01:39:39,282 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:39:39,479 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_01-priv_nr_true.i[1084,1097] [2024-11-19 01:39:39,617 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:39:39,635 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:39:39,649 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_01-priv_nr_true.i[1084,1097] [2024-11-19 01:39:39,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:39:39,728 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:39:39,729 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:39 WrapperNode [2024-11-19 01:39:39,729 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:39:39,730 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:39:39,730 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:39:39,730 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:39:39,736 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:39" (1/1) ... [2024-11-19 01:39:39,752 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:39" (1/1) ... [2024-11-19 01:39:39,778 INFO L138 Inliner]: procedures = 162, calls = 21, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 130 [2024-11-19 01:39:39,779 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:39:39,781 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:39:39,781 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:39:39,781 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:39:39,790 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:39" (1/1) ... [2024-11-19 01:39:39,790 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:39" (1/1) ... [2024-11-19 01:39:39,793 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:39" (1/1) ... [2024-11-19 01:39:39,808 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-11-19 01:39:39,809 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:39" (1/1) ... [2024-11-19 01:39:39,809 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:39" (1/1) ... [2024-11-19 01:39:39,817 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:39" (1/1) ... [2024-11-19 01:39:39,823 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:39" (1/1) ... [2024-11-19 01:39:39,825 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:39" (1/1) ... [2024-11-19 01:39:39,827 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:39" (1/1) ... [2024-11-19 01:39:39,829 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:39:39,831 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:39:39,831 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:39:39,832 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:39:39,832 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:39" (1/1) ... [2024-11-19 01:39:39,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:39:39,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:39:39,882 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 01:39:39,887 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 01:39:39,939 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-19 01:39:39,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:39:39,941 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-19 01:39:39,941 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-19 01:39:39,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:39:39,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 01:39:39,942 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-19 01:39:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:39:39,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:39:39,945 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 01:39:40,103 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:39:40,105 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:39:40,350 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:39:40,350 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:39:40,734 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:39:40,735 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-19 01:39:40,735 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:39:40 BoogieIcfgContainer [2024-11-19 01:39:40,735 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:39:40,737 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:39:40,737 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:39:40,740 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:39:40,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:39:39" (1/3) ... [2024-11-19 01:39:40,741 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31940413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:39:40, skipping insertion in model container [2024-11-19 01:39:40,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:39" (2/3) ... [2024-11-19 01:39:40,742 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31940413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:39:40, skipping insertion in model container [2024-11-19 01:39:40,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:39:40" (3/3) ... [2024-11-19 01:39:40,743 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_01-priv_nr_true.i [2024-11-19 01:39:40,759 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:39:40,759 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-19 01:39:40,760 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:39:40,810 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-19 01:39:40,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 35 transitions, 77 flow [2024-11-19 01:39:40,877 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-11-19 01:39:40,877 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 01:39:40,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 34 events. 4/34 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2024-11-19 01:39:40,881 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 35 transitions, 77 flow [2024-11-19 01:39:40,884 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 32 transitions, 67 flow [2024-11-19 01:39:40,894 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:39:40,899 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2a68b267, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:39:40,900 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-19 01:39:40,904 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:39:40,906 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-19 01:39:40,907 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 01:39:40,907 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:39:40,908 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 01:39:40,908 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 01:39:40,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:39:40,914 INFO L85 PathProgramCache]: Analyzing trace with hash 352239, now seen corresponding path program 1 times [2024-11-19 01:39:40,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:39:40,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966507031] [2024-11-19 01:39:40,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:39:40,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:39:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:39:41,306 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 01:39:41,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:39:41,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966507031] [2024-11-19 01:39:41,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966507031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:39:41,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:39:41,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 01:39:41,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25259093] [2024-11-19 01:39:41,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:39:41,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:39:41,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:39:41,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:39:41,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:39:41,360 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-11-19 01:39:41,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 32 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 01:39:41,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:39:41,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-11-19 01:39:41,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:39:41,480 INFO L124 PetriNetUnfolderBase]: 49/152 cut-off events. [2024-11-19 01:39:41,480 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 01:39:41,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 152 events. 49/152 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 604 event pairs, 42 based on Foata normal form. 22/156 useless extension candidates. Maximal degree in co-relation 260. Up to 100 conditions per place. [2024-11-19 01:39:41,486 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 18 selfloop transitions, 4 changer transitions 3/33 dead transitions. [2024-11-19 01:39:41,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 33 transitions, 119 flow [2024-11-19 01:39:41,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:39:41,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:39:41,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-11-19 01:39:41,538 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.580952380952381 [2024-11-19 01:39:41,540 INFO L175 Difference]: Start difference. First operand has 32 places, 32 transitions, 67 flow. Second operand 3 states and 61 transitions. [2024-11-19 01:39:41,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 33 transitions, 119 flow [2024-11-19 01:39:41,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 33 transitions, 118 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:39:41,546 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 62 flow [2024-11-19 01:39:41,549 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2024-11-19 01:39:41,554 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2024-11-19 01:39:41,554 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 62 flow [2024-11-19 01:39:41,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 01:39:41,554 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:39:41,554 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:39:41,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:39:41,555 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 01:39:41,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:39:41,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1479462979, now seen corresponding path program 1 times [2024-11-19 01:39:41,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:39:41,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015300216] [2024-11-19 01:39:41,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:39:41,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:39:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:39:41,776 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 01:39:41,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:39:41,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015300216] [2024-11-19 01:39:41,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015300216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:39:41,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:39:41,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:39:41,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386717018] [2024-11-19 01:39:41,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:39:41,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:39:41,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:39:41,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:39:41,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:39:41,787 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-11-19 01:39:41,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 01:39:41,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:39:41,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-11-19 01:39:41,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:39:41,921 INFO L124 PetriNetUnfolderBase]: 48/147 cut-off events. [2024-11-19 01:39:41,923 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-19 01:39:41,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 147 events. 48/147 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 554 event pairs, 19 based on Foata normal form. 8/147 useless extension candidates. Maximal degree in co-relation 274. Up to 65 conditions per place. [2024-11-19 01:39:41,926 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 24 selfloop transitions, 6 changer transitions 3/41 dead transitions. [2024-11-19 01:39:41,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 41 transitions, 160 flow [2024-11-19 01:39:41,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:39:41,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:39:41,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-11-19 01:39:41,930 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-11-19 01:39:41,930 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 62 flow. Second operand 5 states and 84 transitions. [2024-11-19 01:39:41,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 41 transitions, 160 flow [2024-11-19 01:39:41,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 41 transitions, 150 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 01:39:41,934 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 90 flow [2024-11-19 01:39:41,935 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=90, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2024-11-19 01:39:41,936 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2024-11-19 01:39:41,936 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 90 flow [2024-11-19 01:39:41,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 01:39:41,937 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:39:41,937 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:39:41,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:39:41,938 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 01:39:41,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:39:41,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1485795164, now seen corresponding path program 1 times [2024-11-19 01:39:41,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:39:41,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447647290] [2024-11-19 01:39:41,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:39:41,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:39:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:39:42,101 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 01:39:42,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:39:42,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447647290] [2024-11-19 01:39:42,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447647290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:39:42,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:39:42,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:39:42,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494620756] [2024-11-19 01:39:42,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:39:42,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:39:42,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:39:42,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:39:42,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:39:42,112 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-11-19 01:39:42,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 01:39:42,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:39:42,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-11-19 01:39:42,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:39:42,234 INFO L124 PetriNetUnfolderBase]: 53/145 cut-off events. [2024-11-19 01:39:42,237 INFO L125 PetriNetUnfolderBase]: For 65/73 co-relation queries the response was YES. [2024-11-19 01:39:42,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 145 events. 53/145 cut-off events. For 65/73 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 519 event pairs, 15 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 332. Up to 65 conditions per place. [2024-11-19 01:39:42,238 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 24 selfloop transitions, 5 changer transitions 6/42 dead transitions. [2024-11-19 01:39:42,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 196 flow [2024-11-19 01:39:42,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:39:42,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:39:42,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-11-19 01:39:42,242 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5028571428571429 [2024-11-19 01:39:42,242 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 90 flow. Second operand 5 states and 88 transitions. [2024-11-19 01:39:42,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 196 flow [2024-11-19 01:39:42,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 189 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 01:39:42,246 INFO L231 Difference]: Finished difference. Result has 40 places, 27 transitions, 107 flow [2024-11-19 01:39:42,249 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=107, PETRI_PLACES=40, PETRI_TRANSITIONS=27} [2024-11-19 01:39:42,250 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 8 predicate places. [2024-11-19 01:39:42,250 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 27 transitions, 107 flow [2024-11-19 01:39:42,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 01:39:42,250 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:39:42,250 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:39:42,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:39:42,251 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 01:39:42,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:39:42,251 INFO L85 PathProgramCache]: Analyzing trace with hash 156243907, now seen corresponding path program 1 times [2024-11-19 01:39:42,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:39:42,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417083564] [2024-11-19 01:39:42,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:39:42,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:39:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:39:42,375 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 01:39:42,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:39:42,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417083564] [2024-11-19 01:39:42,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417083564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:39:42,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:39:42,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:39:42,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401868308] [2024-11-19 01:39:42,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:39:42,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:39:42,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:39:42,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:39:42,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:39:42,377 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-11-19 01:39:42,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 27 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 01:39:42,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:39:42,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-11-19 01:39:42,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:39:42,443 INFO L124 PetriNetUnfolderBase]: 15/69 cut-off events. [2024-11-19 01:39:42,445 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-11-19 01:39:42,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 69 events. 15/69 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 148 event pairs, 5 based on Foata normal form. 7/76 useless extension candidates. Maximal degree in co-relation 156. Up to 32 conditions per place. [2024-11-19 01:39:42,446 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 16 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2024-11-19 01:39:42,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 30 transitions, 153 flow [2024-11-19 01:39:42,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:39:42,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:39:42,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-11-19 01:39:42,448 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5904761904761905 [2024-11-19 01:39:42,449 INFO L175 Difference]: Start difference. First operand has 40 places, 27 transitions, 107 flow. Second operand 3 states and 62 transitions. [2024-11-19 01:39:42,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 30 transitions, 153 flow [2024-11-19 01:39:42,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 30 transitions, 142 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-19 01:39:42,453 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 104 flow [2024-11-19 01:39:42,453 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2024-11-19 01:39:42,454 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 6 predicate places. [2024-11-19 01:39:42,455 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 104 flow [2024-11-19 01:39:42,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 01:39:42,455 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:39:42,455 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:39:42,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 01:39:42,456 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 01:39:42,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:39:42,456 INFO L85 PathProgramCache]: Analyzing trace with hash 328470942, now seen corresponding path program 1 times [2024-11-19 01:39:42,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:39:42,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355812005] [2024-11-19 01:39:42,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:39:42,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:39:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:39:42,623 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 01:39:42,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:39:42,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355812005] [2024-11-19 01:39:42,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355812005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:39:42,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:39:42,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:39:42,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678038432] [2024-11-19 01:39:42,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:39:42,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:39:42,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:39:42,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:39:42,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:39:42,634 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-11-19 01:39:42,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 01:39:42,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:39:42,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-11-19 01:39:42,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:39:42,736 INFO L124 PetriNetUnfolderBase]: 17/70 cut-off events. [2024-11-19 01:39:42,737 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-19 01:39:42,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 70 events. 17/70 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 132 event pairs, 9 based on Foata normal form. 1/71 useless extension candidates. Maximal degree in co-relation 164. Up to 22 conditions per place. [2024-11-19 01:39:42,737 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 14 selfloop transitions, 4 changer transitions 10/32 dead transitions. [2024-11-19 01:39:42,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 32 transitions, 171 flow [2024-11-19 01:39:42,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:39:42,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:39:42,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-11-19 01:39:42,740 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2024-11-19 01:39:42,740 INFO L175 Difference]: Start difference. First operand has 38 places, 27 transitions, 104 flow. Second operand 6 states and 86 transitions. [2024-11-19 01:39:42,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 32 transitions, 171 flow [2024-11-19 01:39:42,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 32 transitions, 163 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 01:39:42,743 INFO L231 Difference]: Finished difference. Result has 39 places, 19 transitions, 74 flow [2024-11-19 01:39:42,744 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=74, PETRI_PLACES=39, PETRI_TRANSITIONS=19} [2024-11-19 01:39:42,744 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2024-11-19 01:39:42,744 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 19 transitions, 74 flow [2024-11-19 01:39:42,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 01:39:42,745 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:39:42,745 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 01:39:42,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 01:39:42,747 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-19 01:39:42,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:39:42,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1184314455, now seen corresponding path program 1 times [2024-11-19 01:39:42,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:39:42,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107379138] [2024-11-19 01:39:42,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:39:42,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:39:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:39:42,893 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 01:39:42,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:39:42,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107379138] [2024-11-19 01:39:42,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107379138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:39:42,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:39:42,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:39:42,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039022237] [2024-11-19 01:39:42,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:39:42,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:39:42,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:39:42,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:39:42,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:39:42,908 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-11-19 01:39:42,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 19 transitions, 74 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 01:39:42,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:39:42,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-11-19 01:39:42,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:39:42,984 INFO L124 PetriNetUnfolderBase]: 11/42 cut-off events. [2024-11-19 01:39:42,984 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-19 01:39:42,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 42 events. 11/42 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 4 based on Foata normal form. 2/44 useless extension candidates. Maximal degree in co-relation 99. Up to 15 conditions per place. [2024-11-19 01:39:42,985 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2024-11-19 01:39:42,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 21 transitions, 115 flow [2024-11-19 01:39:42,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:39:42,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:39:42,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-11-19 01:39:42,987 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3673469387755102 [2024-11-19 01:39:42,988 INFO L175 Difference]: Start difference. First operand has 39 places, 19 transitions, 74 flow. Second operand 7 states and 90 transitions. [2024-11-19 01:39:42,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 21 transitions, 115 flow [2024-11-19 01:39:42,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 21 transitions, 90 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-11-19 01:39:42,990 INFO L231 Difference]: Finished difference. Result has 28 places, 0 transitions, 0 flow [2024-11-19 01:39:42,990 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=28, PETRI_TRANSITIONS=0} [2024-11-19 01:39:42,991 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, -4 predicate places. [2024-11-19 01:39:42,992 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 0 transitions, 0 flow [2024-11-19 01:39:42,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 01:39:42,995 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2024-11-19 01:39:42,996 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2024-11-19 01:39:42,996 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2024-11-19 01:39:42,996 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2024-11-19 01:39:42,996 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2024-11-19 01:39:42,996 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2024-11-19 01:39:42,997 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2024-11-19 01:39:42,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 01:39:42,997 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-19 01:39:43,003 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-19 01:39:43,004 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-19 01:39:43,010 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 01:39:43 BasicIcfg [2024-11-19 01:39:43,011 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-19 01:39:43,011 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 01:39:43,011 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 01:39:43,012 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 01:39:43,013 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:39:40" (3/4) ... [2024-11-19 01:39:43,014 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-19 01:39:43,021 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-11-19 01:39:43,028 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 83 nodes and edges [2024-11-19 01:39:43,029 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-11-19 01:39:43,030 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-19 01:39:43,030 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-19 01:39:43,125 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-19 01:39:43,128 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-19 01:39:43,129 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 01:39:43,129 INFO L158 Benchmark]: Toolchain (without parser) took 3906.46ms. Allocated memory was 165.7MB in the beginning and 222.3MB in the end (delta: 56.6MB). Free memory was 108.0MB in the beginning and 102.6MB in the end (delta: 5.4MB). Peak memory consumption was 63.8MB. Max. memory is 16.1GB. [2024-11-19 01:39:43,130 INFO L158 Benchmark]: CDTParser took 0.60ms. Allocated memory is still 165.7MB. Free memory is still 130.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 01:39:43,130 INFO L158 Benchmark]: CACSL2BoogieTranslator took 503.74ms. Allocated memory is still 165.7MB. Free memory was 108.0MB in the beginning and 85.9MB in the end (delta: 22.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-19 01:39:43,130 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.83ms. Allocated memory is still 165.7MB. Free memory was 85.7MB in the beginning and 83.2MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-19 01:39:43,130 INFO L158 Benchmark]: Boogie Preprocessor took 48.65ms. Allocated memory is still 165.7MB. Free memory was 83.2MB in the beginning and 81.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 01:39:43,131 INFO L158 Benchmark]: RCFGBuilder took 904.22ms. Allocated memory is still 165.7MB. Free memory was 80.8MB in the beginning and 101.8MB in the end (delta: -21.0MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2024-11-19 01:39:43,131 INFO L158 Benchmark]: TraceAbstraction took 2273.69ms. Allocated memory was 165.7MB in the beginning and 222.3MB in the end (delta: 56.6MB). Free memory was 100.9MB in the beginning and 106.8MB in the end (delta: -5.9MB). Peak memory consumption was 53.5MB. Max. memory is 16.1GB. [2024-11-19 01:39:43,131 INFO L158 Benchmark]: Witness Printer took 117.53ms. Allocated memory is still 222.3MB. Free memory was 106.8MB in the beginning and 102.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-19 01:39:43,133 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60ms. Allocated memory is still 165.7MB. Free memory is still 130.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 503.74ms. Allocated memory is still 165.7MB. Free memory was 108.0MB in the beginning and 85.9MB in the end (delta: 22.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.83ms. Allocated memory is still 165.7MB. Free memory was 85.7MB in the beginning and 83.2MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.65ms. Allocated memory is still 165.7MB. Free memory was 83.2MB in the beginning and 81.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 904.22ms. Allocated memory is still 165.7MB. Free memory was 80.8MB in the beginning and 101.8MB in the end (delta: -21.0MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * TraceAbstraction took 2273.69ms. Allocated memory was 165.7MB in the beginning and 222.3MB in the end (delta: 56.6MB). Free memory was 100.9MB in the beginning and 106.8MB in the end (delta: -5.9MB). Peak memory consumption was 53.5MB. Max. memory is 16.1GB. * Witness Printer took 117.53ms. Allocated memory is still 222.3MB. Free memory was 106.8MB in the beginning and 102.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 47 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 87 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 69 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 288 IncrementalHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 6 mSDtfsCounter, 288 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107occurred in iteration=3, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 59 ConstructedInterpolants, 0 QuantifiedInterpolants, 156 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-19 01:39:43,166 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE