./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe002_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe002_tso.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 3743abf17a0d3db70a931712c22f305431bb6e8feb7b662539ff9c5190491352 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 09:26:05,070 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 09:26:05,142 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-20 09:26:05,151 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 09:26:05,152 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 09:26:05,178 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 09:26:05,179 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 09:26:05,179 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 09:26:05,180 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 09:26:05,180 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 09:26:05,181 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 09:26:05,181 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 09:26:05,182 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 09:26:05,182 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 09:26:05,182 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 09:26:05,183 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 09:26:05,183 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 09:26:05,184 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 09:26:05,184 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 09:26:05,184 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 09:26:05,185 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 09:26:05,185 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 09:26:05,185 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 09:26:05,186 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 09:26:05,186 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 09:26:05,186 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 09:26:05,187 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 09:26:05,187 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 09:26:05,188 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 09:26:05,188 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 09:26:05,188 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 09:26:05,188 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 09:26:05,189 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:26:05,189 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 09:26:05,189 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 09:26:05,190 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 09:26:05,190 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 09:26:05,190 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 09:26:05,191 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 09:26:05,191 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 09:26:05,191 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 09:26:05,192 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 09:26:05,192 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3743abf17a0d3db70a931712c22f305431bb6e8feb7b662539ff9c5190491352 [2024-11-20 09:26:05,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 09:26:05,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 09:26:05,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 09:26:05,510 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 09:26:05,510 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 09:26:05,512 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe002_tso.i [2024-11-20 09:26:07,016 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 09:26:07,266 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 09:26:07,267 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe002_tso.i [2024-11-20 09:26:07,283 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/523065268/fd1d7fefeab14f4499f877ae443e2be9/FLAG520e32646 [2024-11-20 09:26:07,298 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/523065268/fd1d7fefeab14f4499f877ae443e2be9 [2024-11-20 09:26:07,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 09:26:07,304 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 09:26:07,305 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 09:26:07,305 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 09:26:07,312 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 09:26:07,312 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:26:07" (1/1) ... [2024-11-20 09:26:07,315 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69bab8b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:07, skipping insertion in model container [2024-11-20 09:26:07,315 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:26:07" (1/1) ... [2024-11-20 09:26:07,359 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 09:26:07,594 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/pthread-wmm/safe002_tso.i[945,958] [2024-11-20 09:26:07,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:26:07,729 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 09:26:07,742 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/pthread-wmm/safe002_tso.i[945,958] [2024-11-20 09:26:07,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:26:07,837 INFO L204 MainTranslator]: Completed translation [2024-11-20 09:26:07,837 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:07 WrapperNode [2024-11-20 09:26:07,838 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 09:26:07,839 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 09:26:07,839 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 09:26:07,839 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 09:26:07,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:07" (1/1) ... [2024-11-20 09:26:07,857 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:07" (1/1) ... [2024-11-20 09:26:07,883 INFO L138 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2024-11-20 09:26:07,884 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 09:26:07,885 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 09:26:07,885 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 09:26:07,885 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 09:26:07,895 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:07" (1/1) ... [2024-11-20 09:26:07,896 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:07" (1/1) ... [2024-11-20 09:26:07,901 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:07" (1/1) ... [2024-11-20 09:26:07,933 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-20 09:26:07,933 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:07" (1/1) ... [2024-11-20 09:26:07,933 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:07" (1/1) ... [2024-11-20 09:26:07,938 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:07" (1/1) ... [2024-11-20 09:26:07,944 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:07" (1/1) ... [2024-11-20 09:26:07,948 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:07" (1/1) ... [2024-11-20 09:26:07,949 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:07" (1/1) ... [2024-11-20 09:26:07,954 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 09:26:07,955 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 09:26:07,959 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 09:26:07,959 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 09:26:07,960 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:07" (1/1) ... [2024-11-20 09:26:07,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:26:07,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:26:08,000 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) [2024-11-20 09:26:08,003 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 [2024-11-20 09:26:08,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-20 09:26:08,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 09:26:08,055 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-20 09:26:08,055 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-20 09:26:08,055 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-20 09:26:08,055 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-20 09:26:08,056 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-20 09:26:08,057 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-20 09:26:08,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 09:26:08,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-20 09:26:08,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 09:26:08,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 09:26:08,059 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 09:26:08,170 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 09:26:08,172 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 09:26:08,331 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 09:26:08,332 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 09:26:08,408 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 09:26:08,409 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-20 09:26:08,409 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:26:08 BoogieIcfgContainer [2024-11-20 09:26:08,409 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 09:26:08,411 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 09:26:08,411 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 09:26:08,415 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 09:26:08,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:26:07" (1/3) ... [2024-11-20 09:26:08,416 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414b11a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:26:08, skipping insertion in model container [2024-11-20 09:26:08,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:07" (2/3) ... [2024-11-20 09:26:08,416 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@414b11a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:26:08, skipping insertion in model container [2024-11-20 09:26:08,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:26:08" (3/3) ... [2024-11-20 09:26:08,417 INFO L112 eAbstractionObserver]: Analyzing ICFG safe002_tso.i [2024-11-20 09:26:08,433 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 09:26:08,433 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-20 09:26:08,433 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 09:26:08,478 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-20 09:26:08,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 38 transitions, 88 flow [2024-11-20 09:26:08,550 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-11-20 09:26:08,551 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 09:26:08,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2024-11-20 09:26:08,554 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 38 transitions, 88 flow [2024-11-20 09:26:08,557 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2024-11-20 09:26:08,566 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 09:26:08,572 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;@758fbe67, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 09:26:08,573 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-20 09:26:08,582 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 09:26:08,582 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2024-11-20 09:26:08,582 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 09:26:08,583 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:26:08,583 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:26:08,584 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:26:08,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:26:08,589 INFO L85 PathProgramCache]: Analyzing trace with hash 958553775, now seen corresponding path program 1 times [2024-11-20 09:26:08,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:26:08,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907411854] [2024-11-20 09:26:08,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:26:08,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:26:08,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:26:09,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:26:09,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:26:09,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907411854] [2024-11-20 09:26:09,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907411854] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:26:09,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:26:09,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 09:26:09,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298311091] [2024-11-20 09:26:09,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:26:09,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:26:09,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:26:09,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:26:09,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:26:09,277 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-20 09:26:09,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2024-11-20 09:26:09,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:26:09,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-20 09:26:09,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:26:09,789 INFO L124 PetriNetUnfolderBase]: 1183/2234 cut-off events. [2024-11-20 09:26:09,789 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-20 09:26:09,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4127 conditions, 2234 events. 1183/2234 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 15640 event pairs, 374 based on Foata normal form. 79/2276 useless extension candidates. Maximal degree in co-relation 4116. Up to 818 conditions per place. [2024-11-20 09:26:09,815 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 29 selfloop transitions, 6 changer transitions 35/83 dead transitions. [2024-11-20 09:26:09,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 83 transitions, 321 flow [2024-11-20 09:26:09,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 09:26:09,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 09:26:09,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-11-20 09:26:09,831 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6917293233082706 [2024-11-20 09:26:09,832 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 7 states and 184 transitions. [2024-11-20 09:26:09,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 83 transitions, 321 flow [2024-11-20 09:26:09,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 83 transitions, 316 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 09:26:09,842 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 144 flow [2024-11-20 09:26:09,846 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=144, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2024-11-20 09:26:09,852 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2024-11-20 09:26:09,853 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 144 flow [2024-11-20 09:26:09,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2024-11-20 09:26:09,853 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:26:09,854 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:26:09,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 09:26:09,855 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:26:09,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:26:09,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1253896208, now seen corresponding path program 1 times [2024-11-20 09:26:09,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:26:09,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743419785] [2024-11-20 09:26:09,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:26:09,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:26:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:26:10,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:26:10,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:26:10,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743419785] [2024-11-20 09:26:10,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743419785] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:26:10,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:26:10,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:26:10,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133557045] [2024-11-20 09:26:10,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:26:10,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:26:10,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:26:10,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:26:10,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:26:10,159 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-20 09:26:10,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 transitions, 144 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2024-11-20 09:26:10,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:26:10,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-20 09:26:10,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:26:10,583 INFO L124 PetriNetUnfolderBase]: 976/1989 cut-off events. [2024-11-20 09:26:10,584 INFO L125 PetriNetUnfolderBase]: For 2099/2105 co-relation queries the response was YES. [2024-11-20 09:26:10,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5416 conditions, 1989 events. 976/1989 cut-off events. For 2099/2105 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 14026 event pairs, 92 based on Foata normal form. 60/2016 useless extension candidates. Maximal degree in co-relation 5400. Up to 704 conditions per place. [2024-11-20 09:26:10,599 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 36 selfloop transitions, 10 changer transitions 46/105 dead transitions. [2024-11-20 09:26:10,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 105 transitions, 664 flow [2024-11-20 09:26:10,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 09:26:10,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 09:26:10,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 245 transitions. [2024-11-20 09:26:10,602 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6447368421052632 [2024-11-20 09:26:10,602 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 144 flow. Second operand 10 states and 245 transitions. [2024-11-20 09:26:10,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 105 transitions, 664 flow [2024-11-20 09:26:10,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 105 transitions, 610 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 09:26:10,618 INFO L231 Difference]: Finished difference. Result has 63 places, 43 transitions, 234 flow [2024-11-20 09:26:10,619 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=234, PETRI_PLACES=63, PETRI_TRANSITIONS=43} [2024-11-20 09:26:10,620 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2024-11-20 09:26:10,620 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 43 transitions, 234 flow [2024-11-20 09:26:10,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2024-11-20 09:26:10,621 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:26:10,621 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:26:10,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 09:26:10,622 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:26:10,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:26:10,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1981039572, now seen corresponding path program 1 times [2024-11-20 09:26:10,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:26:10,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51398880] [2024-11-20 09:26:10,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:26:10,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:26:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:26:10,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:26:10,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:26:10,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51398880] [2024-11-20 09:26:10,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51398880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:26:10,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:26:10,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:26:10,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198561603] [2024-11-20 09:26:10,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:26:10,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:26:10,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:26:10,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:26:10,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:26:10,815 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-20 09:26:10,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 43 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2024-11-20 09:26:10,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:26:10,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-20 09:26:10,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:26:11,164 INFO L124 PetriNetUnfolderBase]: 846/1664 cut-off events. [2024-11-20 09:26:11,165 INFO L125 PetriNetUnfolderBase]: For 4527/4539 co-relation queries the response was YES. [2024-11-20 09:26:11,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5462 conditions, 1664 events. 846/1664 cut-off events. For 4527/4539 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 10984 event pairs, 216 based on Foata normal form. 42/1687 useless extension candidates. Maximal degree in co-relation 5437. Up to 662 conditions per place. [2024-11-20 09:26:11,180 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 40 selfloop transitions, 12 changer transitions 32/97 dead transitions. [2024-11-20 09:26:11,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 97 transitions, 676 flow [2024-11-20 09:26:11,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 09:26:11,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 09:26:11,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 236 transitions. [2024-11-20 09:26:11,184 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6210526315789474 [2024-11-20 09:26:11,185 INFO L175 Difference]: Start difference. First operand has 63 places, 43 transitions, 234 flow. Second operand 10 states and 236 transitions. [2024-11-20 09:26:11,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 97 transitions, 676 flow [2024-11-20 09:26:11,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 97 transitions, 610 flow, removed 33 selfloop flow, removed 2 redundant places. [2024-11-20 09:26:11,204 INFO L231 Difference]: Finished difference. Result has 73 places, 46 transitions, 308 flow [2024-11-20 09:26:11,205 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=308, PETRI_PLACES=73, PETRI_TRANSITIONS=46} [2024-11-20 09:26:11,206 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 31 predicate places. [2024-11-20 09:26:11,206 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 46 transitions, 308 flow [2024-11-20 09:26:11,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2024-11-20 09:26:11,207 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:26:11,207 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:26:11,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 09:26:11,208 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:26:11,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:26:11,209 INFO L85 PathProgramCache]: Analyzing trace with hash 441165449, now seen corresponding path program 1 times [2024-11-20 09:26:11,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:26:11,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952358670] [2024-11-20 09:26:11,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:26:11,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:26:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:26:11,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:26:11,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:26:11,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952358670] [2024-11-20 09:26:11,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952358670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:26:11,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:26:11,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:26:11,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401241892] [2024-11-20 09:26:11,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:26:11,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:26:11,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:26:11,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:26:11,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:26:11,375 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 38 [2024-11-20 09:26:11,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 46 transitions, 308 flow. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:26:11,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:26:11,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 38 [2024-11-20 09:26:11,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:26:11,656 INFO L124 PetriNetUnfolderBase]: 871/1890 cut-off events. [2024-11-20 09:26:11,656 INFO L125 PetriNetUnfolderBase]: For 4962/5037 co-relation queries the response was YES. [2024-11-20 09:26:11,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6044 conditions, 1890 events. 871/1890 cut-off events. For 4962/5037 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 14334 event pairs, 252 based on Foata normal form. 69/1888 useless extension candidates. Maximal degree in co-relation 6014. Up to 632 conditions per place. [2024-11-20 09:26:11,670 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 28 selfloop transitions, 5 changer transitions 25/75 dead transitions. [2024-11-20 09:26:11,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 75 transitions, 580 flow [2024-11-20 09:26:11,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:26:11,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:26:11,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-11-20 09:26:11,672 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6798245614035088 [2024-11-20 09:26:11,672 INFO L175 Difference]: Start difference. First operand has 73 places, 46 transitions, 308 flow. Second operand 6 states and 155 transitions. [2024-11-20 09:26:11,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 75 transitions, 580 flow [2024-11-20 09:26:11,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 75 transitions, 540 flow, removed 18 selfloop flow, removed 11 redundant places. [2024-11-20 09:26:11,703 INFO L231 Difference]: Finished difference. Result has 64 places, 40 transitions, 229 flow [2024-11-20 09:26:11,704 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=229, PETRI_PLACES=64, PETRI_TRANSITIONS=40} [2024-11-20 09:26:11,704 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2024-11-20 09:26:11,704 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 40 transitions, 229 flow [2024-11-20 09:26:11,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:26:11,705 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:26:11,705 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:26:11,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 09:26:11,705 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:26:11,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:26:11,706 INFO L85 PathProgramCache]: Analyzing trace with hash -563962061, now seen corresponding path program 1 times [2024-11-20 09:26:11,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:26:11,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443424855] [2024-11-20 09:26:11,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:26:11,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:26:11,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:26:11,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:26:11,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:26:11,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443424855] [2024-11-20 09:26:11,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443424855] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:26:11,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:26:11,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 09:26:11,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951838018] [2024-11-20 09:26:11,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:26:11,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:26:11,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:26:11,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:26:11,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:26:11,845 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-20 09:26:11,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 40 transitions, 229 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2024-11-20 09:26:11,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:26:11,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-20 09:26:11,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:26:12,070 INFO L124 PetriNetUnfolderBase]: 703/1422 cut-off events. [2024-11-20 09:26:12,071 INFO L125 PetriNetUnfolderBase]: For 2528/2528 co-relation queries the response was YES. [2024-11-20 09:26:12,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4456 conditions, 1422 events. 703/1422 cut-off events. For 2528/2528 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 9646 event pairs, 131 based on Foata normal form. 42/1424 useless extension candidates. Maximal degree in co-relation 4428. Up to 571 conditions per place. [2024-11-20 09:26:12,081 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 32 selfloop transitions, 7 changer transitions 28/80 dead transitions. [2024-11-20 09:26:12,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 80 transitions, 577 flow [2024-11-20 09:26:12,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 09:26:12,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-20 09:26:12,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-11-20 09:26:12,083 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.618421052631579 [2024-11-20 09:26:12,083 INFO L175 Difference]: Start difference. First operand has 64 places, 40 transitions, 229 flow. Second operand 8 states and 188 transitions. [2024-11-20 09:26:12,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 80 transitions, 577 flow [2024-11-20 09:26:12,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 80 transitions, 488 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-11-20 09:26:12,124 INFO L231 Difference]: Finished difference. Result has 63 places, 39 transitions, 196 flow [2024-11-20 09:26:12,124 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=196, PETRI_PLACES=63, PETRI_TRANSITIONS=39} [2024-11-20 09:26:12,126 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2024-11-20 09:26:12,127 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 39 transitions, 196 flow [2024-11-20 09:26:12,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2024-11-20 09:26:12,127 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:26:12,128 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:26:12,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 09:26:12,128 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:26:12,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:26:12,131 INFO L85 PathProgramCache]: Analyzing trace with hash 799663883, now seen corresponding path program 2 times [2024-11-20 09:26:12,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:26:12,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782271275] [2024-11-20 09:26:12,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:26:12,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:26:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:26:12,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:26:12,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:26:12,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782271275] [2024-11-20 09:26:12,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782271275] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:26:12,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:26:12,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 09:26:12,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024119807] [2024-11-20 09:26:12,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:26:12,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 09:26:12,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:26:12,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 09:26:12,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-20 09:26:12,338 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-20 09:26:12,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 39 transitions, 196 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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) [2024-11-20 09:26:12,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:26:12,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-20 09:26:12,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:26:12,538 INFO L124 PetriNetUnfolderBase]: 626/1309 cut-off events. [2024-11-20 09:26:12,539 INFO L125 PetriNetUnfolderBase]: For 1779/1779 co-relation queries the response was YES. [2024-11-20 09:26:12,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3712 conditions, 1309 events. 626/1309 cut-off events. For 1779/1779 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 9165 event pairs, 159 based on Foata normal form. 38/1310 useless extension candidates. Maximal degree in co-relation 3688. Up to 479 conditions per place. [2024-11-20 09:26:12,548 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 30 selfloop transitions, 8 changer transitions 22/73 dead transitions. [2024-11-20 09:26:12,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 73 transitions, 489 flow [2024-11-20 09:26:12,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 09:26:12,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 09:26:12,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-11-20 09:26:12,551 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6240601503759399 [2024-11-20 09:26:12,551 INFO L175 Difference]: Start difference. First operand has 63 places, 39 transitions, 196 flow. Second operand 7 states and 166 transitions. [2024-11-20 09:26:12,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 73 transitions, 489 flow [2024-11-20 09:26:12,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 73 transitions, 460 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-11-20 09:26:12,558 INFO L231 Difference]: Finished difference. Result has 63 places, 38 transitions, 201 flow [2024-11-20 09:26:12,559 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=201, PETRI_PLACES=63, PETRI_TRANSITIONS=38} [2024-11-20 09:26:12,561 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2024-11-20 09:26:12,562 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 38 transitions, 201 flow [2024-11-20 09:26:12,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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) [2024-11-20 09:26:12,562 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:26:12,562 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] [2024-11-20 09:26:12,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 09:26:12,563 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:26:12,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:26:12,563 INFO L85 PathProgramCache]: Analyzing trace with hash 706274284, now seen corresponding path program 1 times [2024-11-20 09:26:12,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:26:12,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088309875] [2024-11-20 09:26:12,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:26:12,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:26:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:26:12,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:26:12,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:26:12,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088309875] [2024-11-20 09:26:12,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088309875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:26:12,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:26:12,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 09:26:12,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963906498] [2024-11-20 09:26:12,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:26:12,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:26:12,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:26:12,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:26:12,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:26:12,712 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 38 [2024-11-20 09:26:12,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 38 transitions, 201 flow. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 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) [2024-11-20 09:26:12,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:26:12,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 38 [2024-11-20 09:26:12,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:26:12,884 INFO L124 PetriNetUnfolderBase]: 286/643 cut-off events. [2024-11-20 09:26:12,884 INFO L125 PetriNetUnfolderBase]: For 1021/1042 co-relation queries the response was YES. [2024-11-20 09:26:12,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1927 conditions, 643 events. 286/643 cut-off events. For 1021/1042 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3844 event pairs, 92 based on Foata normal form. 24/655 useless extension candidates. Maximal degree in co-relation 1903. Up to 183 conditions per place. [2024-11-20 09:26:12,890 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 20 selfloop transitions, 2 changer transitions 25/62 dead transitions. [2024-11-20 09:26:12,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 62 transitions, 355 flow [2024-11-20 09:26:12,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 09:26:12,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 09:26:12,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-11-20 09:26:12,892 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6390977443609023 [2024-11-20 09:26:12,892 INFO L175 Difference]: Start difference. First operand has 63 places, 38 transitions, 201 flow. Second operand 7 states and 170 transitions. [2024-11-20 09:26:12,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 62 transitions, 355 flow [2024-11-20 09:26:12,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 62 transitions, 323 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-20 09:26:12,896 INFO L231 Difference]: Finished difference. Result has 62 places, 32 transitions, 122 flow [2024-11-20 09:26:12,896 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=122, PETRI_PLACES=62, PETRI_TRANSITIONS=32} [2024-11-20 09:26:12,897 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places. [2024-11-20 09:26:12,897 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 32 transitions, 122 flow [2024-11-20 09:26:12,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 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) [2024-11-20 09:26:12,897 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:26:12,898 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] [2024-11-20 09:26:12,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 09:26:12,898 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:26:12,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:26:12,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1700676406, now seen corresponding path program 2 times [2024-11-20 09:26:12,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:26:12,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120661982] [2024-11-20 09:26:12,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:26:12,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:26:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:26:13,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:26:13,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:26:13,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120661982] [2024-11-20 09:26:13,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120661982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:26:13,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:26:13,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:26:13,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614626156] [2024-11-20 09:26:13,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:26:13,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:26:13,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:26:13,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:26:13,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 09:26:13,064 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2024-11-20 09:26:13,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 32 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2024-11-20 09:26:13,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:26:13,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2024-11-20 09:26:13,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:26:13,158 INFO L124 PetriNetUnfolderBase]: 315/585 cut-off events. [2024-11-20 09:26:13,159 INFO L125 PetriNetUnfolderBase]: For 245/249 co-relation queries the response was YES. [2024-11-20 09:26:13,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1324 conditions, 585 events. 315/585 cut-off events. For 245/249 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2930 event pairs, 144 based on Foata normal form. 27/571 useless extension candidates. Maximal degree in co-relation 1303. Up to 290 conditions per place. [2024-11-20 09:26:13,164 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 23 selfloop transitions, 5 changer transitions 1/45 dead transitions. [2024-11-20 09:26:13,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 45 transitions, 208 flow [2024-11-20 09:26:13,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 09:26:13,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 09:26:13,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2024-11-20 09:26:13,165 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7302631578947368 [2024-11-20 09:26:13,165 INFO L175 Difference]: Start difference. First operand has 62 places, 32 transitions, 122 flow. Second operand 4 states and 111 transitions. [2024-11-20 09:26:13,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 45 transitions, 208 flow [2024-11-20 09:26:13,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 45 transitions, 180 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-11-20 09:26:13,167 INFO L231 Difference]: Finished difference. Result has 50 places, 35 transitions, 128 flow [2024-11-20 09:26:13,168 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=50, PETRI_TRANSITIONS=35} [2024-11-20 09:26:13,168 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2024-11-20 09:26:13,168 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 35 transitions, 128 flow [2024-11-20 09:26:13,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2024-11-20 09:26:13,169 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:26:13,169 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] [2024-11-20 09:26:13,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 09:26:13,169 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:26:13,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:26:13,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1426308873, now seen corresponding path program 1 times [2024-11-20 09:26:13,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:26:13,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511922201] [2024-11-20 09:26:13,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:26:13,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:26:13,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:26:13,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:26:13,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:26:13,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511922201] [2024-11-20 09:26:13,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511922201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:26:13,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:26:13,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 09:26:13,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727320824] [2024-11-20 09:26:13,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:26:13,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:26:13,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:26:13,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:26:13,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:26:13,274 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2024-11-20 09:26:13,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 35 transitions, 128 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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) [2024-11-20 09:26:13,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:26:13,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2024-11-20 09:26:13,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:26:13,360 INFO L124 PetriNetUnfolderBase]: 245/506 cut-off events. [2024-11-20 09:26:13,361 INFO L125 PetriNetUnfolderBase]: For 262/353 co-relation queries the response was YES. [2024-11-20 09:26:13,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1272 conditions, 506 events. 245/506 cut-off events. For 262/353 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2474 event pairs, 27 based on Foata normal form. 30/515 useless extension candidates. Maximal degree in co-relation 1256. Up to 181 conditions per place. [2024-11-20 09:26:13,364 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 27 selfloop transitions, 8 changer transitions 1/52 dead transitions. [2024-11-20 09:26:13,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 52 transitions, 251 flow [2024-11-20 09:26:13,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:26:13,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:26:13,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 138 transitions. [2024-11-20 09:26:13,366 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7263157894736842 [2024-11-20 09:26:13,366 INFO L175 Difference]: Start difference. First operand has 50 places, 35 transitions, 128 flow. Second operand 5 states and 138 transitions. [2024-11-20 09:26:13,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 52 transitions, 251 flow [2024-11-20 09:26:13,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 52 transitions, 241 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-20 09:26:13,368 INFO L231 Difference]: Finished difference. Result has 54 places, 38 transitions, 168 flow [2024-11-20 09:26:13,368 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=168, PETRI_PLACES=54, PETRI_TRANSITIONS=38} [2024-11-20 09:26:13,369 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2024-11-20 09:26:13,369 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 38 transitions, 168 flow [2024-11-20 09:26:13,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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) [2024-11-20 09:26:13,372 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:26:13,372 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] [2024-11-20 09:26:13,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 09:26:13,373 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:26:13,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:26:13,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1320705544, now seen corresponding path program 1 times [2024-11-20 09:26:13,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:26:13,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761698691] [2024-11-20 09:26:13,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:26:13,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:26:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:26:13,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:26:13,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:26:13,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761698691] [2024-11-20 09:26:13,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761698691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:26:13,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:26:13,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:26:13,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811628658] [2024-11-20 09:26:13,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:26:13,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:26:13,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:26:13,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:26:13,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:26:13,490 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2024-11-20 09:26:13,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 38 transitions, 168 flow. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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) [2024-11-20 09:26:13,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:26:13,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2024-11-20 09:26:13,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:26:13,599 INFO L124 PetriNetUnfolderBase]: 150/301 cut-off events. [2024-11-20 09:26:13,599 INFO L125 PetriNetUnfolderBase]: For 369/490 co-relation queries the response was YES. [2024-11-20 09:26:13,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 852 conditions, 301 events. 150/301 cut-off events. For 369/490 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1046 event pairs, 6 based on Foata normal form. 28/315 useless extension candidates. Maximal degree in co-relation 834. Up to 84 conditions per place. [2024-11-20 09:26:13,601 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 25 selfloop transitions, 11 changer transitions 1/53 dead transitions. [2024-11-20 09:26:13,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 53 transitions, 278 flow [2024-11-20 09:26:13,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:26:13,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:26:13,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-11-20 09:26:13,603 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6973684210526315 [2024-11-20 09:26:13,603 INFO L175 Difference]: Start difference. First operand has 54 places, 38 transitions, 168 flow. Second operand 6 states and 159 transitions. [2024-11-20 09:26:13,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 53 transitions, 278 flow [2024-11-20 09:26:13,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 53 transitions, 237 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-11-20 09:26:13,605 INFO L231 Difference]: Finished difference. Result has 54 places, 38 transitions, 166 flow [2024-11-20 09:26:13,606 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=166, PETRI_PLACES=54, PETRI_TRANSITIONS=38} [2024-11-20 09:26:13,606 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2024-11-20 09:26:13,606 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 38 transitions, 166 flow [2024-11-20 09:26:13,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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) [2024-11-20 09:26:13,607 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:26:13,607 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] [2024-11-20 09:26:13,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-20 09:26:13,607 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:26:13,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:26:13,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1105436729, now seen corresponding path program 1 times [2024-11-20 09:26:13,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:26:13,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066979673] [2024-11-20 09:26:13,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:26:13,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:26:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:26:13,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:26:13,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:26:13,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066979673] [2024-11-20 09:26:13,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066979673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:26:13,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:26:13,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 09:26:13,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946206637] [2024-11-20 09:26:13,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:26:13,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:26:13,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:26:13,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:26:13,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:26:13,758 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 38 [2024-11-20 09:26:13,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 38 transitions, 166 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 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) [2024-11-20 09:26:13,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:26:13,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 38 [2024-11-20 09:26:13,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:26:13,857 INFO L124 PetriNetUnfolderBase]: 97/233 cut-off events. [2024-11-20 09:26:13,857 INFO L125 PetriNetUnfolderBase]: For 180/184 co-relation queries the response was YES. [2024-11-20 09:26:13,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 597 conditions, 233 events. 97/233 cut-off events. For 180/184 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 808 event pairs, 6 based on Foata normal form. 8/226 useless extension candidates. Maximal degree in co-relation 581. Up to 84 conditions per place. [2024-11-20 09:26:13,858 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 0 selfloop transitions, 0 changer transitions 48/48 dead transitions. [2024-11-20 09:26:13,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 48 transitions, 242 flow [2024-11-20 09:26:13,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:26:13,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:26:13,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-11-20 09:26:13,860 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6228070175438597 [2024-11-20 09:26:13,861 INFO L175 Difference]: Start difference. First operand has 54 places, 38 transitions, 166 flow. Second operand 6 states and 142 transitions. [2024-11-20 09:26:13,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 48 transitions, 242 flow [2024-11-20 09:26:13,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 48 transitions, 186 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-11-20 09:26:13,863 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2024-11-20 09:26:13,863 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2024-11-20 09:26:13,863 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2024-11-20 09:26:13,863 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2024-11-20 09:26:13,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 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) [2024-11-20 09:26:13,866 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-11-20 09:26:13,869 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-11-20 09:26:13,869 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-20 09:26:13,869 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-20 09:26:13,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-20 09:26:13,870 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:26:13,875 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-20 09:26:13,875 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-20 09:26:13,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:26:13 BasicIcfg [2024-11-20 09:26:13,882 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-20 09:26:13,882 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-20 09:26:13,882 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-20 09:26:13,883 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-20 09:26:13,883 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:26:08" (3/4) ... [2024-11-20 09:26:13,885 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-20 09:26:13,889 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2024-11-20 09:26:13,889 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2024-11-20 09:26:13,889 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2024-11-20 09:26:13,894 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2024-11-20 09:26:13,895 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-20 09:26:13,895 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-20 09:26:13,895 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-20 09:26:13,979 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-20 09:26:13,981 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-20 09:26:13,982 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-20 09:26:13,982 INFO L158 Benchmark]: Toolchain (without parser) took 6678.20ms. Allocated memory was 176.2MB in the beginning and 306.2MB in the end (delta: 130.0MB). Free memory was 106.7MB in the beginning and 237.2MB in the end (delta: -130.5MB). Peak memory consumption was 697.4kB. Max. memory is 16.1GB. [2024-11-20 09:26:13,982 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 176.2MB. Free memory was 133.3MB in the beginning and 133.2MB in the end (delta: 86.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 09:26:13,983 INFO L158 Benchmark]: CACSL2BoogieTranslator took 532.64ms. Allocated memory is still 176.2MB. Free memory was 106.5MB in the beginning and 135.1MB in the end (delta: -28.6MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. [2024-11-20 09:26:13,983 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.56ms. Allocated memory is still 176.2MB. Free memory was 135.1MB in the beginning and 133.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 09:26:13,983 INFO L158 Benchmark]: Boogie Preprocessor took 69.93ms. Allocated memory is still 176.2MB. Free memory was 133.0MB in the beginning and 130.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 09:26:13,983 INFO L158 Benchmark]: RCFGBuilder took 454.16ms. Allocated memory is still 176.2MB. Free memory was 130.8MB in the beginning and 111.3MB in the end (delta: 19.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-20 09:26:13,983 INFO L158 Benchmark]: TraceAbstraction took 5470.82ms. Allocated memory was 176.2MB in the beginning and 306.2MB in the end (delta: 130.0MB). Free memory was 110.6MB in the beginning and 242.4MB in the end (delta: -131.8MB). Peak memory consumption was 580.2kB. Max. memory is 16.1GB. [2024-11-20 09:26:13,984 INFO L158 Benchmark]: Witness Printer took 99.33ms. Allocated memory is still 306.2MB. Free memory was 242.4MB in the beginning and 237.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-20 09:26:13,986 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 176.2MB. Free memory was 133.3MB in the beginning and 133.2MB in the end (delta: 86.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 532.64ms. Allocated memory is still 176.2MB. Free memory was 106.5MB in the beginning and 135.1MB in the end (delta: -28.6MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.56ms. Allocated memory is still 176.2MB. Free memory was 135.1MB in the beginning and 133.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.93ms. Allocated memory is still 176.2MB. Free memory was 133.0MB in the beginning and 130.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 454.16ms. Allocated memory is still 176.2MB. Free memory was 130.8MB in the beginning and 111.3MB in the end (delta: 19.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 5470.82ms. Allocated memory was 176.2MB in the beginning and 306.2MB in the end (delta: 130.0MB). Free memory was 110.6MB in the beginning and 242.4MB in the end (delta: -131.8MB). Peak memory consumption was 580.2kB. Max. memory is 16.1GB. * Witness Printer took 99.33ms. Allocated memory is still 306.2MB. Free memory was 242.4MB in the beginning and 237.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: 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 7 procedures, 62 locations, 4 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: 5.4s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 469 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 417 mSDsluCounter, 283 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 208 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1048 IncrementalHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 75 mSDtfsCounter, 1048 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=308occurred in iteration=3, InterpolantAutomatonStates: 76, 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, 1.8s InterpolantComputationTime, 227 NumberOfCodeBlocks, 227 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 216 ConstructedInterpolants, 0 QuantifiedInterpolants, 826 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-20 09:26:14,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE