./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.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 7912270168edfe57ed71790473a28594e3bc48002f5ead86961705c042bbf781 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:19:36,057 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:19:36,098 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:19:36,101 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:19:36,102 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:19:36,122 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:19:36,123 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:19:36,123 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:19:36,124 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:19:36,124 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:19:36,124 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:19:36,125 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:19:36,125 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:19:36,126 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:19:36,126 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:19:36,126 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:19:36,126 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:19:36,127 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:19:36,127 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:19:36,127 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:19:36,127 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:19:36,132 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:19:36,132 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:19:36,132 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:19:36,133 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:19:36,133 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:19:36,133 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:19:36,133 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:19:36,134 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:19:36,134 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:19:36,134 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:19:36,134 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:19:36,134 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:19:36,134 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:19:36,135 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:19:36,135 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:19:36,135 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:19:36,135 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:19:36,135 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:19:36,135 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:19:36,136 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:19:36,136 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:19:36,136 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7912270168edfe57ed71790473a28594e3bc48002f5ead86961705c042bbf781 [2024-11-10 10:19:36,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:19:36,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:19:36,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:19:36,380 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:19:36,381 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:19:36,382 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-11-10 10:19:37,762 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:19:37,968 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:19:37,968 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-11-10 10:19:37,983 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e174e9108/f6ec9acdc9a7499481bd9b8e8d2d6460/FLAGc552756fb [2024-11-10 10:19:37,997 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e174e9108/f6ec9acdc9a7499481bd9b8e8d2d6460 [2024-11-10 10:19:37,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:19:38,002 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:19:38,003 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:19:38,003 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:19:38,007 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:19:38,008 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:19:37" (1/1) ... [2024-11-10 10:19:38,009 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@293d69c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:19:38, skipping insertion in model container [2024-11-10 10:19:38,009 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:19:37" (1/1) ... [2024-11-10 10:19:38,042 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:19:38,190 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/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2024-11-10 10:19:38,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:19:38,317 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:19:38,328 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/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2024-11-10 10:19:38,363 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:19:38,446 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:19:38,449 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:19:38 WrapperNode [2024-11-10 10:19:38,449 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:19:38,450 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:19:38,450 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:19:38,450 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:19:38,482 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:19:38" (1/1) ... [2024-11-10 10:19:38,497 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:19:38" (1/1) ... [2024-11-10 10:19:38,515 INFO L138 Inliner]: procedures = 176, calls = 46, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2024-11-10 10:19:38,516 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:19:38,517 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:19:38,517 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:19:38,517 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:19:38,524 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:19:38" (1/1) ... [2024-11-10 10:19:38,525 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:19:38" (1/1) ... [2024-11-10 10:19:38,527 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:19:38" (1/1) ... [2024-11-10 10:19:38,538 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]. [2024-11-10 10:19:38,538 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:19:38" (1/1) ... [2024-11-10 10:19:38,538 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:19:38" (1/1) ... [2024-11-10 10:19:38,543 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:19:38" (1/1) ... [2024-11-10 10:19:38,544 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:19:38" (1/1) ... [2024-11-10 10:19:38,545 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:19:38" (1/1) ... [2024-11-10 10:19:38,546 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:19:38" (1/1) ... [2024-11-10 10:19:38,547 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:19:38,548 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:19:38,548 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:19:38,548 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:19:38,549 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:19:38" (1/1) ... [2024-11-10 10:19:38,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:19:38,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:19:38,582 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 10:19:38,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 10:19:38,620 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 10:19:38,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:19:38,621 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-10 10:19:38,621 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-10 10:19:38,621 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-10 10:19:38,621 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-10 10:19:38,621 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-10 10:19:38,621 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-10 10:19:38,621 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-11-10 10:19:38,621 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-11-10 10:19:38,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:19:38,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 10:19:38,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:19:38,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:19:38,627 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 10:19:38,777 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:19:38,779 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:19:38,898 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:19:38,899 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:19:39,009 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:19:39,009 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:19:39,010 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:19:39 BoogieIcfgContainer [2024-11-10 10:19:39,010 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:19:39,012 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:19:39,013 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:19:39,016 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:19:39,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:19:37" (1/3) ... [2024-11-10 10:19:39,017 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30703a42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:19:39, skipping insertion in model container [2024-11-10 10:19:39,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:19:38" (2/3) ... [2024-11-10 10:19:39,017 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30703a42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:19:39, skipping insertion in model container [2024-11-10 10:19:39,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:19:39" (3/3) ... [2024-11-10 10:19:39,018 INFO L112 eAbstractionObserver]: Analyzing ICFG safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-11-10 10:19:39,032 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:19:39,032 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:19:39,032 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:19:39,085 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 10:19:39,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 45 transitions, 106 flow [2024-11-10 10:19:39,145 INFO L124 PetriNetUnfolderBase]: 1/41 cut-off events. [2024-11-10 10:19:39,146 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:19:39,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 41 events. 1/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-11-10 10:19:39,148 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 45 transitions, 106 flow [2024-11-10 10:19:39,150 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 38 transitions, 88 flow [2024-11-10 10:19:39,156 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:19:39,161 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;@3ff837ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:19:39,161 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-10 10:19:39,174 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:19:39,174 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2024-11-10 10:19:39,174 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:19:39,175 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:19:39,175 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:19:39,176 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 2 more)] === [2024-11-10 10:19:39,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:19:39,180 INFO L85 PathProgramCache]: Analyzing trace with hash 510403447, now seen corresponding path program 1 times [2024-11-10 10:19:39,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:19:39,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166848565] [2024-11-10 10:19:39,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:19:39,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:19:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:19:39,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:19:39,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:19:39,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166848565] [2024-11-10 10:19:39,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166848565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:19:39,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:19:39,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:19:39,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904036988] [2024-11-10 10:19:39,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:19:39,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:19:39,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:19:39,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:19:39,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:19:39,759 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-10 10:19:39,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:19:39,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:19:39,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-10 10:19:39,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:19:42,182 INFO L124 PetriNetUnfolderBase]: 28352/38593 cut-off events. [2024-11-10 10:19:42,182 INFO L125 PetriNetUnfolderBase]: For 210/210 co-relation queries the response was YES. [2024-11-10 10:19:42,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76743 conditions, 38593 events. 28352/38593 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 1332. Compared 233198 event pairs, 7367 based on Foata normal form. 900/39486 useless extension candidates. Maximal degree in co-relation 76731. Up to 30566 conditions per place. [2024-11-10 10:19:42,397 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 50 selfloop transitions, 3 changer transitions 59/117 dead transitions. [2024-11-10 10:19:42,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 117 transitions, 479 flow [2024-11-10 10:19:42,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:19:42,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:19:42,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-11-10 10:19:42,408 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5619047619047619 [2024-11-10 10:19:42,409 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 88 flow. Second operand 7 states and 177 transitions. [2024-11-10 10:19:42,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 117 transitions, 479 flow [2024-11-10 10:19:42,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 117 transitions, 472 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 10:19:42,424 INFO L231 Difference]: Finished difference. Result has 58 places, 40 transitions, 119 flow [2024-11-10 10:19:42,426 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=119, PETRI_PLACES=58, PETRI_TRANSITIONS=40} [2024-11-10 10:19:42,431 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2024-11-10 10:19:42,431 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 40 transitions, 119 flow [2024-11-10 10:19:42,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:19:42,432 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:19:42,432 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:19:42,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:19:42,433 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 2 more)] === [2024-11-10 10:19:42,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:19:42,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1818828024, now seen corresponding path program 1 times [2024-11-10 10:19:42,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:19:42,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723557527] [2024-11-10 10:19:42,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:19:42,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:19:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:19:42,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:19:42,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:19:42,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723557527] [2024-11-10 10:19:42,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723557527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:19:42,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:19:42,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:19:42,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877497386] [2024-11-10 10:19:42,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:19:42,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:19:42,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:19:42,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:19:42,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:19:42,658 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-10 10:19:42,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 40 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:19:42,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:19:42,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-10 10:19:42,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:19:45,346 INFO L124 PetriNetUnfolderBase]: 26297/35759 cut-off events. [2024-11-10 10:19:45,346 INFO L125 PetriNetUnfolderBase]: For 15502/15502 co-relation queries the response was YES. [2024-11-10 10:19:45,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83046 conditions, 35759 events. 26297/35759 cut-off events. For 15502/15502 co-relation queries the response was YES. Maximal size of possible extension queue 1177. Compared 208397 event pairs, 3682 based on Foata normal form. 750/36474 useless extension candidates. Maximal degree in co-relation 83031. Up to 26491 conditions per place. [2024-11-10 10:19:45,530 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 50 selfloop transitions, 3 changer transitions 61/119 dead transitions. [2024-11-10 10:19:45,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 119 transitions, 529 flow [2024-11-10 10:19:45,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:19:45,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:19:45,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-11-10 10:19:45,532 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5650793650793651 [2024-11-10 10:19:45,533 INFO L175 Difference]: Start difference. First operand has 58 places, 40 transitions, 119 flow. Second operand 7 states and 178 transitions. [2024-11-10 10:19:45,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 119 transitions, 529 flow [2024-11-10 10:19:45,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 119 transitions, 512 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-11-10 10:19:45,868 INFO L231 Difference]: Finished difference. Result has 62 places, 40 transitions, 129 flow [2024-11-10 10:19:45,868 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=129, PETRI_PLACES=62, PETRI_TRANSITIONS=40} [2024-11-10 10:19:45,869 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2024-11-10 10:19:45,870 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 40 transitions, 129 flow [2024-11-10 10:19:45,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:19:45,870 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:19:45,870 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:19:45,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:19:45,871 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 2 more)] === [2024-11-10 10:19:45,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:19:45,873 INFO L85 PathProgramCache]: Analyzing trace with hash -104559578, now seen corresponding path program 1 times [2024-11-10 10:19:45,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:19:45,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659367452] [2024-11-10 10:19:45,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:19:45,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:19:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:19:46,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:19:46,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:19:46,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659367452] [2024-11-10 10:19:46,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659367452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:19:46,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:19:46,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:19:46,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384124918] [2024-11-10 10:19:46,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:19:46,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:19:46,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:19:46,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:19:46,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:19:46,011 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-10 10:19:46,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 40 transitions, 129 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:19:46,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:19:46,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-10 10:19:46,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:19:48,337 INFO L124 PetriNetUnfolderBase]: 29477/39933 cut-off events. [2024-11-10 10:19:48,337 INFO L125 PetriNetUnfolderBase]: For 27596/27596 co-relation queries the response was YES. [2024-11-10 10:19:48,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95932 conditions, 39933 events. 29477/39933 cut-off events. For 27596/27596 co-relation queries the response was YES. Maximal size of possible extension queue 1300. Compared 234025 event pairs, 2965 based on Foata normal form. 875/40800 useless extension candidates. Maximal degree in co-relation 95913. Up to 25063 conditions per place. [2024-11-10 10:19:48,744 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 91 selfloop transitions, 13 changer transitions 114/223 dead transitions. [2024-11-10 10:19:48,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 223 transitions, 1073 flow [2024-11-10 10:19:48,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 10:19:48,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-10 10:19:48,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 337 transitions. [2024-11-10 10:19:48,753 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.576068376068376 [2024-11-10 10:19:48,754 INFO L175 Difference]: Start difference. First operand has 62 places, 40 transitions, 129 flow. Second operand 13 states and 337 transitions. [2024-11-10 10:19:48,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 223 transitions, 1073 flow [2024-11-10 10:19:49,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 223 transitions, 1027 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-11-10 10:19:49,353 INFO L231 Difference]: Finished difference. Result has 75 places, 50 transitions, 258 flow [2024-11-10 10:19:49,353 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=258, PETRI_PLACES=75, PETRI_TRANSITIONS=50} [2024-11-10 10:19:49,354 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 24 predicate places. [2024-11-10 10:19:49,354 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 50 transitions, 258 flow [2024-11-10 10:19:49,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:19:49,354 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:19:49,354 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:19:49,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:19:49,355 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 2 more)] === [2024-11-10 10:19:49,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:19:49,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1052810285, now seen corresponding path program 1 times [2024-11-10 10:19:49,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:19:49,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186011885] [2024-11-10 10:19:49,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:19:49,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:19:49,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:19:49,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:19:49,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:19:49,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186011885] [2024-11-10 10:19:49,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186011885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:19:49,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:19:49,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:19:49,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829580661] [2024-11-10 10:19:49,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:19:49,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:19:49,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:19:49,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:19:49,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:19:49,466 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-10 10:19:49,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 50 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:19:49,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:19:49,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-10 10:19:49,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:19:52,548 INFO L124 PetriNetUnfolderBase]: 27316/36987 cut-off events. [2024-11-10 10:19:52,549 INFO L125 PetriNetUnfolderBase]: For 115493/115493 co-relation queries the response was YES. [2024-11-10 10:19:52,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120825 conditions, 36987 events. 27316/36987 cut-off events. For 115493/115493 co-relation queries the response was YES. Maximal size of possible extension queue 1108. Compared 210758 event pairs, 11336 based on Foata normal form. 720/37690 useless extension candidates. Maximal degree in co-relation 120799. Up to 27914 conditions per place. [2024-11-10 10:19:52,962 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 64 selfloop transitions, 6 changer transitions 61/136 dead transitions. [2024-11-10 10:19:52,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 136 transitions, 872 flow [2024-11-10 10:19:52,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:19:52,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:19:52,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-11-10 10:19:52,964 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2024-11-10 10:19:52,964 INFO L175 Difference]: Start difference. First operand has 75 places, 50 transitions, 258 flow. Second operand 7 states and 182 transitions. [2024-11-10 10:19:52,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 136 transitions, 872 flow [2024-11-10 10:19:53,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 136 transitions, 773 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-11-10 10:19:53,599 INFO L231 Difference]: Finished difference. Result has 71 places, 50 transitions, 245 flow [2024-11-10 10:19:53,601 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=245, PETRI_PLACES=71, PETRI_TRANSITIONS=50} [2024-11-10 10:19:53,610 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 20 predicate places. [2024-11-10 10:19:53,611 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 50 transitions, 245 flow [2024-11-10 10:19:53,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:19:53,611 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:19:53,612 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:19:53,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:19:53,612 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 2 more)] === [2024-11-10 10:19:53,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:19:53,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1380941081, now seen corresponding path program 1 times [2024-11-10 10:19:53,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:19:53,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68481252] [2024-11-10 10:19:53,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:19:53,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:19:53,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:19:53,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:19:53,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:19:53,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68481252] [2024-11-10 10:19:53,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68481252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:19:53,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:19:53,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 10:19:53,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703312706] [2024-11-10 10:19:53,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:19:53,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 10:19:53,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:19:53,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 10:19:53,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-10 10:19:53,806 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-10 10:19:53,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 50 transitions, 245 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:19:53,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:19:53,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-10 10:19:53,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:19:56,991 INFO L124 PetriNetUnfolderBase]: 35174/47288 cut-off events. [2024-11-10 10:19:56,992 INFO L125 PetriNetUnfolderBase]: For 86084/86084 co-relation queries the response was YES. [2024-11-10 10:19:57,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137154 conditions, 47288 events. 35174/47288 cut-off events. For 86084/86084 co-relation queries the response was YES. Maximal size of possible extension queue 1436. Compared 275024 event pairs, 5778 based on Foata normal form. 625/47894 useless extension candidates. Maximal degree in co-relation 137128. Up to 19636 conditions per place. [2024-11-10 10:19:57,380 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 65 selfloop transitions, 5 changer transitions 78/153 dead transitions. [2024-11-10 10:19:57,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 153 transitions, 919 flow [2024-11-10 10:19:57,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 10:19:57,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 10:19:57,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-11-10 10:19:57,384 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5861111111111111 [2024-11-10 10:19:57,384 INFO L175 Difference]: Start difference. First operand has 71 places, 50 transitions, 245 flow. Second operand 8 states and 211 transitions. [2024-11-10 10:19:57,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 153 transitions, 919 flow [2024-11-10 10:19:58,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 153 transitions, 873 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-11-10 10:19:58,701 INFO L231 Difference]: Finished difference. Result has 72 places, 42 transitions, 196 flow [2024-11-10 10:19:58,701 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=196, PETRI_PLACES=72, PETRI_TRANSITIONS=42} [2024-11-10 10:19:58,703 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 21 predicate places. [2024-11-10 10:19:58,703 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 42 transitions, 196 flow [2024-11-10 10:19:58,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:19:58,704 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:19:58,704 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] [2024-11-10 10:19:58,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 10:19:58,704 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 2 more)] === [2024-11-10 10:19:58,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:19:58,707 INFO L85 PathProgramCache]: Analyzing trace with hash 161705528, now seen corresponding path program 1 times [2024-11-10 10:19:58,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:19:58,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806461159] [2024-11-10 10:19:58,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:19:58,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:19:58,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:19:58,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:19:58,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:19:58,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806461159] [2024-11-10 10:19:58,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806461159] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:19:58,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:19:58,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 10:19:58,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377635261] [2024-11-10 10:19:58,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:19:58,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 10:19:58,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:19:58,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 10:19:58,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-10 10:19:58,955 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-10 10:19:58,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 42 transitions, 196 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:19:58,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:19:58,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-10 10:19:58,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:20:01,306 INFO L124 PetriNetUnfolderBase]: 26197/35464 cut-off events. [2024-11-10 10:20:01,306 INFO L125 PetriNetUnfolderBase]: For 63499/63499 co-relation queries the response was YES. [2024-11-10 10:20:01,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103341 conditions, 35464 events. 26197/35464 cut-off events. For 63499/63499 co-relation queries the response was YES. Maximal size of possible extension queue 986. Compared 193535 event pairs, 3256 based on Foata normal form. 500/35907 useless extension candidates. Maximal degree in co-relation 103315. Up to 15196 conditions per place. [2024-11-10 10:20:01,477 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 59 selfloop transitions, 5 changer transitions 71/140 dead transitions. [2024-11-10 10:20:01,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 140 transitions, 865 flow [2024-11-10 10:20:01,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 10:20:01,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 10:20:01,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-11-10 10:20:01,478 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5583333333333333 [2024-11-10 10:20:01,479 INFO L175 Difference]: Start difference. First operand has 72 places, 42 transitions, 196 flow. Second operand 8 states and 201 transitions. [2024-11-10 10:20:01,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 140 transitions, 865 flow [2024-11-10 10:20:02,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 140 transitions, 791 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-11-10 10:20:02,033 INFO L231 Difference]: Finished difference. Result has 71 places, 42 transitions, 191 flow [2024-11-10 10:20:02,033 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=191, PETRI_PLACES=71, PETRI_TRANSITIONS=42} [2024-11-10 10:20:02,034 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 20 predicate places. [2024-11-10 10:20:02,034 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 42 transitions, 191 flow [2024-11-10 10:20:02,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:20:02,034 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:20:02,034 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] [2024-11-10 10:20:02,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 10:20:02,034 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 2 more)] === [2024-11-10 10:20:02,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:20:02,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1278474175, now seen corresponding path program 1 times [2024-11-10 10:20:02,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:20:02,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671264237] [2024-11-10 10:20:02,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:20:02,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:20:02,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:20:02,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:20:02,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:20:02,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671264237] [2024-11-10 10:20:02,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671264237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:20:02,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:20:02,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:20:02,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019079703] [2024-11-10 10:20:02,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:20:02,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:20:02,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:20:02,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:20:02,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:20:02,101 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-11-10 10:20:02,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 42 transitions, 191 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:20:02,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:20:02,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-11-10 10:20:02,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:20:03,206 INFO L124 PetriNetUnfolderBase]: 12988/18023 cut-off events. [2024-11-10 10:20:03,207 INFO L125 PetriNetUnfolderBase]: For 33817/33817 co-relation queries the response was YES. [2024-11-10 10:20:03,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52240 conditions, 18023 events. 12988/18023 cut-off events. For 33817/33817 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 96628 event pairs, 1366 based on Foata normal form. 625/18642 useless extension candidates. Maximal degree in co-relation 52216. Up to 10945 conditions per place. [2024-11-10 10:20:03,327 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 76 selfloop transitions, 6 changer transitions 1/88 dead transitions. [2024-11-10 10:20:03,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 88 transitions, 583 flow [2024-11-10 10:20:03,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 10:20:03,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 10:20:03,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-11-10 10:20:03,328 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6277777777777778 [2024-11-10 10:20:03,328 INFO L175 Difference]: Start difference. First operand has 71 places, 42 transitions, 191 flow. Second operand 4 states and 113 transitions. [2024-11-10 10:20:03,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 88 transitions, 583 flow [2024-11-10 10:20:03,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 88 transitions, 541 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-10 10:20:03,386 INFO L231 Difference]: Finished difference. Result has 64 places, 46 transitions, 209 flow [2024-11-10 10:20:03,386 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=64, PETRI_TRANSITIONS=46} [2024-11-10 10:20:03,386 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2024-11-10 10:20:03,386 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 46 transitions, 209 flow [2024-11-10 10:20:03,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:20:03,387 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:20:03,387 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] [2024-11-10 10:20:03,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 10:20:03,387 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 2 more)] === [2024-11-10 10:20:03,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:20:03,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1955430680, now seen corresponding path program 1 times [2024-11-10 10:20:03,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:20:03,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475217507] [2024-11-10 10:20:03,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:20:03,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:20:03,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:20:03,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:20:03,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:20:03,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475217507] [2024-11-10 10:20:03,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475217507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:20:03,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:20:03,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:20:03,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066790879] [2024-11-10 10:20:03,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:20:03,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:20:03,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:20:03,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:20:03,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:20:03,563 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-11-10 10:20:03,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 46 transitions, 209 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:20:03,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:20:03,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-11-10 10:20:03,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:20:04,153 INFO L124 PetriNetUnfolderBase]: 9442/13268 cut-off events. [2024-11-10 10:20:04,153 INFO L125 PetriNetUnfolderBase]: For 22895/22895 co-relation queries the response was YES. [2024-11-10 10:20:04,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39863 conditions, 13268 events. 9442/13268 cut-off events. For 22895/22895 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 68325 event pairs, 630 based on Foata normal form. 544/13806 useless extension candidates. Maximal degree in co-relation 39843. Up to 6481 conditions per place. [2024-11-10 10:20:04,222 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 93 selfloop transitions, 10 changer transitions 1/109 dead transitions. [2024-11-10 10:20:04,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 109 transitions, 714 flow [2024-11-10 10:20:04,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:20:04,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:20:04,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 144 transitions. [2024-11-10 10:20:04,224 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-11-10 10:20:04,225 INFO L175 Difference]: Start difference. First operand has 64 places, 46 transitions, 209 flow. Second operand 5 states and 144 transitions. [2024-11-10 10:20:04,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 109 transitions, 714 flow [2024-11-10 10:20:04,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 109 transitions, 703 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-10 10:20:04,233 INFO L231 Difference]: Finished difference. Result has 68 places, 50 transitions, 261 flow [2024-11-10 10:20:04,233 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=261, PETRI_PLACES=68, PETRI_TRANSITIONS=50} [2024-11-10 10:20:04,233 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 17 predicate places. [2024-11-10 10:20:04,233 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 50 transitions, 261 flow [2024-11-10 10:20:04,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:20:04,234 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:20:04,234 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] [2024-11-10 10:20:04,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 10:20:04,234 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 2 more)] === [2024-11-10 10:20:04,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:20:04,234 INFO L85 PathProgramCache]: Analyzing trace with hash 860137905, now seen corresponding path program 1 times [2024-11-10 10:20:04,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:20:04,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732859534] [2024-11-10 10:20:04,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:20:04,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:20:04,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:20:04,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:20:04,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:20:04,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732859534] [2024-11-10 10:20:04,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732859534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:20:04,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:20:04,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:20:04,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734937359] [2024-11-10 10:20:04,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:20:04,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:20:04,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:20:04,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:20:04,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:20:04,324 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-11-10 10:20:04,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 50 transitions, 261 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:20:04,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:20:04,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-11-10 10:20:04,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:20:04,821 INFO L124 PetriNetUnfolderBase]: 5674/8044 cut-off events. [2024-11-10 10:20:04,822 INFO L125 PetriNetUnfolderBase]: For 17299/17299 co-relation queries the response was YES. [2024-11-10 10:20:04,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25709 conditions, 8044 events. 5674/8044 cut-off events. For 17299/17299 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 38311 event pairs, 438 based on Foata normal form. 328/8366 useless extension candidates. Maximal degree in co-relation 25687. Up to 2376 conditions per place. [2024-11-10 10:20:04,854 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 102 selfloop transitions, 14 changer transitions 1/122 dead transitions. [2024-11-10 10:20:04,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 122 transitions, 846 flow [2024-11-10 10:20:04,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:20:04,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:20:04,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-11-10 10:20:04,856 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6259259259259259 [2024-11-10 10:20:04,856 INFO L175 Difference]: Start difference. First operand has 68 places, 50 transitions, 261 flow. Second operand 6 states and 169 transitions. [2024-11-10 10:20:04,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 122 transitions, 846 flow [2024-11-10 10:20:04,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 122 transitions, 816 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-10 10:20:04,878 INFO L231 Difference]: Finished difference. Result has 71 places, 54 transitions, 311 flow [2024-11-10 10:20:04,878 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=311, PETRI_PLACES=71, PETRI_TRANSITIONS=54} [2024-11-10 10:20:04,878 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 20 predicate places. [2024-11-10 10:20:04,879 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 54 transitions, 311 flow [2024-11-10 10:20:04,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:20:04,879 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:20:04,879 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:20:04,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 10:20:04,879 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 2 more)] === [2024-11-10 10:20:04,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:20:04,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1896004635, now seen corresponding path program 1 times [2024-11-10 10:20:04,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:20:04,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323952562] [2024-11-10 10:20:04,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:20:04,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:20:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:20:04,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:20:04,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:20:04,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323952562] [2024-11-10 10:20:04,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323952562] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:20:04,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:20:04,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 10:20:04,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356642697] [2024-11-10 10:20:04,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:20:04,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:20:04,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:20:04,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:20:04,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:20:04,972 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-10 10:20:04,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 54 transitions, 311 flow. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:20:04,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:20:04,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-10 10:20:04,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:20:05,605 INFO L124 PetriNetUnfolderBase]: 8162/11534 cut-off events. [2024-11-10 10:20:05,605 INFO L125 PetriNetUnfolderBase]: For 25635/25635 co-relation queries the response was YES. [2024-11-10 10:20:05,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37864 conditions, 11534 events. 8162/11534 cut-off events. For 25635/25635 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 57378 event pairs, 1682 based on Foata normal form. 88/11612 useless extension candidates. Maximal degree in co-relation 37841. Up to 6318 conditions per place. [2024-11-10 10:20:05,660 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 67 selfloop transitions, 2 changer transitions 52/126 dead transitions. [2024-11-10 10:20:05,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 126 transitions, 955 flow [2024-11-10 10:20:05,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:20:05,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:20:05,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-11-10 10:20:05,662 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5407407407407407 [2024-11-10 10:20:05,662 INFO L175 Difference]: Start difference. First operand has 71 places, 54 transitions, 311 flow. Second operand 6 states and 146 transitions. [2024-11-10 10:20:05,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 126 transitions, 955 flow [2024-11-10 10:20:05,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 126 transitions, 863 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-11-10 10:20:05,713 INFO L231 Difference]: Finished difference. Result has 75 places, 55 transitions, 293 flow [2024-11-10 10:20:05,713 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=293, PETRI_PLACES=75, PETRI_TRANSITIONS=55} [2024-11-10 10:20:05,714 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 24 predicate places. [2024-11-10 10:20:05,714 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 55 transitions, 293 flow [2024-11-10 10:20:05,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:20:05,714 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:20:05,714 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:20:05,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 10:20:05,715 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 2 more)] === [2024-11-10 10:20:05,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:20:05,715 INFO L85 PathProgramCache]: Analyzing trace with hash 215573091, now seen corresponding path program 2 times [2024-11-10 10:20:05,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:20:05,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170751866] [2024-11-10 10:20:05,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:20:05,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:20:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:20:05,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:20:05,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:20:05,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170751866] [2024-11-10 10:20:05,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170751866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:20:05,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:20:05,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 10:20:05,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175820685] [2024-11-10 10:20:05,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:20:05,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 10:20:05,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:20:05,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 10:20:05,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-10 10:20:05,805 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-11-10 10:20:05,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 55 transitions, 293 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:20:05,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:20:05,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-11-10 10:20:05,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:20:06,259 INFO L124 PetriNetUnfolderBase]: 6106/8564 cut-off events. [2024-11-10 10:20:06,259 INFO L125 PetriNetUnfolderBase]: For 18951/18951 co-relation queries the response was YES. [2024-11-10 10:20:06,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26484 conditions, 8564 events. 6106/8564 cut-off events. For 18951/18951 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 41454 event pairs, 506 based on Foata normal form. 208/8766 useless extension candidates. Maximal degree in co-relation 26459. Up to 2720 conditions per place. [2024-11-10 10:20:06,290 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 75 selfloop transitions, 18 changer transitions 19/117 dead transitions. [2024-11-10 10:20:06,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 117 transitions, 809 flow [2024-11-10 10:20:06,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:20:06,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:20:06,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-11-10 10:20:06,292 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.546031746031746 [2024-11-10 10:20:06,292 INFO L175 Difference]: Start difference. First operand has 75 places, 55 transitions, 293 flow. Second operand 7 states and 172 transitions. [2024-11-10 10:20:06,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 117 transitions, 809 flow [2024-11-10 10:20:06,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 117 transitions, 770 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-11-10 10:20:06,337 INFO L231 Difference]: Finished difference. Result has 76 places, 50 transitions, 284 flow [2024-11-10 10:20:06,337 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=284, PETRI_PLACES=76, PETRI_TRANSITIONS=50} [2024-11-10 10:20:06,337 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 25 predicate places. [2024-11-10 10:20:06,337 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 50 transitions, 284 flow [2024-11-10 10:20:06,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:20:06,338 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:20:06,338 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:20:06,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 10:20:06,338 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:20:06,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:20:06,338 INFO L85 PathProgramCache]: Analyzing trace with hash -2028031802, now seen corresponding path program 1 times [2024-11-10 10:20:06,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:20:06,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992378777] [2024-11-10 10:20:06,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:20:06,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:20:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:20:06,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:20:06,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:20:06,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992378777] [2024-11-10 10:20:06,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992378777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:20:06,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:20:06,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 10:20:06,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127070766] [2024-11-10 10:20:06,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:20:06,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:20:06,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:20:06,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:20:06,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:20:06,420 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-10 10:20:06,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 50 transitions, 284 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:20:06,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:20:06,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-10 10:20:06,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:20:06,674 INFO L124 PetriNetUnfolderBase]: 2760/3957 cut-off events. [2024-11-10 10:20:06,674 INFO L125 PetriNetUnfolderBase]: For 8584/8584 co-relation queries the response was YES. [2024-11-10 10:20:06,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12682 conditions, 3957 events. 2760/3957 cut-off events. For 8584/8584 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 16714 event pairs, 540 based on Foata normal form. 16/3972 useless extension candidates. Maximal degree in co-relation 12658. Up to 2448 conditions per place. [2024-11-10 10:20:06,685 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 0 selfloop transitions, 0 changer transitions 81/81 dead transitions. [2024-11-10 10:20:06,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 81 transitions, 567 flow [2024-11-10 10:20:06,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:20:06,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:20:06,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2024-11-10 10:20:06,687 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-11-10 10:20:06,687 INFO L175 Difference]: Start difference. First operand has 76 places, 50 transitions, 284 flow. Second operand 6 states and 114 transitions. [2024-11-10 10:20:06,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 81 transitions, 567 flow [2024-11-10 10:20:06,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 81 transitions, 409 flow, removed 26 selfloop flow, removed 15 redundant places. [2024-11-10 10:20:06,704 INFO L231 Difference]: Finished difference. Result has 62 places, 0 transitions, 0 flow [2024-11-10 10:20:06,704 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=62, PETRI_TRANSITIONS=0} [2024-11-10 10:20:06,704 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2024-11-10 10:20:06,705 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 0 transitions, 0 flow [2024-11-10 10:20:06,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:20:06,708 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2024-11-10 10:20:06,709 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2024-11-10 10:20:06,709 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-11-10 10:20:06,709 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-11-10 10:20:06,709 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2024-11-10 10:20:06,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-10 10:20:06,709 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:20:06,715 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-10 10:20:06,715 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-10 10:20:06,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 10:20:06 BasicIcfg [2024-11-10 10:20:06,721 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-10 10:20:06,721 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 10:20:06,722 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 10:20:06,722 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 10:20:06,722 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:19:39" (3/4) ... [2024-11-10 10:20:06,724 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-10 10:20:06,727 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure P0 [2024-11-10 10:20:06,727 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure P1 [2024-11-10 10:20:06,727 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure P2 [2024-11-10 10:20:06,727 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure P3 [2024-11-10 10:20:06,731 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 34 nodes and edges [2024-11-10 10:20:06,731 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-11-10 10:20:06,732 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-11-10 10:20:06,732 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-10 10:20:06,834 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-10 10:20:06,834 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-10 10:20:06,834 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 10:20:06,835 INFO L158 Benchmark]: Toolchain (without parser) took 28833.23ms. Allocated memory was 197.1MB in the beginning and 12.8GB in the end (delta: 12.6GB). Free memory was 124.9MB in the beginning and 11.1GB in the end (delta: -11.0GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. [2024-11-10 10:20:06,835 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 197.1MB. Free memory is still 154.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 10:20:06,835 INFO L158 Benchmark]: CACSL2BoogieTranslator took 447.05ms. Allocated memory is still 197.1MB. Free memory was 124.6MB in the beginning and 163.3MB in the end (delta: -38.7MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. [2024-11-10 10:20:06,835 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.94ms. Allocated memory is still 197.1MB. Free memory was 163.3MB in the beginning and 161.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 10:20:06,835 INFO L158 Benchmark]: Boogie Preprocessor took 30.68ms. Allocated memory is still 197.1MB. Free memory was 161.2MB in the beginning and 159.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 10:20:06,836 INFO L158 Benchmark]: IcfgBuilder took 462.33ms. Allocated memory is still 197.1MB. Free memory was 159.1MB in the beginning and 136.9MB in the end (delta: 22.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-10 10:20:06,836 INFO L158 Benchmark]: TraceAbstraction took 27708.72ms. Allocated memory was 197.1MB in the beginning and 12.8GB in the end (delta: 12.6GB). Free memory was 135.9MB in the beginning and 11.1GB in the end (delta: -11.0GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2024-11-10 10:20:06,836 INFO L158 Benchmark]: Witness Printer took 112.83ms. Allocated memory is still 12.8GB. Free memory was 11.1GB in the beginning and 11.1GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-10 10:20:06,837 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 197.1MB. Free memory is still 154.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 447.05ms. Allocated memory is still 197.1MB. Free memory was 124.6MB in the beginning and 163.3MB in the end (delta: -38.7MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.94ms. Allocated memory is still 197.1MB. Free memory was 163.3MB in the beginning and 161.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.68ms. Allocated memory is still 197.1MB. Free memory was 161.2MB in the beginning and 159.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 462.33ms. Allocated memory is still 197.1MB. Free memory was 159.1MB in the beginning and 136.9MB in the end (delta: 22.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 27708.72ms. Allocated memory was 197.1MB in the beginning and 12.8GB in the end (delta: 12.6GB). Free memory was 135.9MB in the beginning and 11.1GB in the end (delta: -11.0GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. * Witness Printer took 112.83ms. Allocated memory is still 12.8GB. Free memory was 11.1GB in the beginning and 11.1GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 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 9 procedures, 75 locations, 5 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: 27.6s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 25.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1252 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1251 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2416 IncrementalHoareTripleChecker+Invalid, 2453 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 2 mSDtfsCounter, 2416 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 106 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=311occurred in iteration=9, InterpolantAutomatonStates: 84, 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, 1.7s InterpolantComputationTime, 287 NumberOfCodeBlocks, 287 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 275 ConstructedInterpolants, 0 QuantifiedInterpolants, 1039 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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! [2024-11-10 10:20:06,874 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