./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/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.dk.eval-mul-div-a046e57-m [2024-10-13 06:59:15,807 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 06:59:15,890 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 06:59:15,897 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 06:59:15,897 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 06:59:15,931 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 06:59:15,932 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 06:59:15,933 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 06:59:15,934 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 06:59:15,935 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 06:59:15,936 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 06:59:15,936 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 06:59:15,937 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 06:59:15,939 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 06:59:15,939 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 06:59:15,939 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 06:59:15,940 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 06:59:15,940 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 06:59:15,940 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 06:59:15,940 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 06:59:15,941 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 06:59:15,946 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 06:59:15,946 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 06:59:15,946 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 06:59:15,946 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 06:59:15,947 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 06:59:15,947 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 06:59:15,947 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 06:59:15,947 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 06:59:15,948 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 06:59:15,948 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 06:59:15,948 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 06:59:15,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 06:59:15,949 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 06:59:15,949 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 06:59:15,949 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 06:59:15,950 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 06:59:15,950 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 06:59:15,951 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 06:59:15,951 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 06:59:15,951 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 06:59:15,952 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 06:59:15,952 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7912270168edfe57ed71790473a28594e3bc48002f5ead86961705c042bbf781 [2024-10-13 06:59:16,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 06:59:16,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 06:59:16,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 06:59:16,223 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 06:59:16,223 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 06:59:16,224 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-10-13 06:59:17,736 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 06:59:17,994 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 06:59:17,996 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-10-13 06:59:18,015 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ffc57d94/da77c2e73de94e45ac2fb32db2323c93/FLAG9554b2dd9 [2024-10-13 06:59:18,032 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ffc57d94/da77c2e73de94e45ac2fb32db2323c93 [2024-10-13 06:59:18,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 06:59:18,035 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 06:59:18,036 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 06:59:18,036 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 06:59:18,041 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 06:59:18,042 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:59:18" (1/1) ... [2024-10-13 06:59:18,044 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36d1cc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:18, skipping insertion in model container [2024-10-13 06:59:18,045 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:59:18" (1/1) ... [2024-10-13 06:59:18,104 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 06:59:18,317 WARN L248 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] [2024-10-13 06:59:18,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 06:59:18,518 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 06:59:18,533 WARN L248 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] [2024-10-13 06:59:18,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 06:59:18,615 INFO L204 MainTranslator]: Completed translation [2024-10-13 06:59:18,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:18 WrapperNode [2024-10-13 06:59:18,616 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 06:59:18,617 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 06:59:18,617 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 06:59:18,618 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 06:59:18,625 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:18" (1/1) ... [2024-10-13 06:59:18,643 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:18" (1/1) ... [2024-10-13 06:59:18,670 INFO L138 Inliner]: procedures = 176, calls = 46, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2024-10-13 06:59:18,671 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 06:59:18,672 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 06:59:18,672 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 06:59:18,672 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 06:59:18,683 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:18" (1/1) ... [2024-10-13 06:59:18,683 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:18" (1/1) ... [2024-10-13 06:59:18,687 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:18" (1/1) ... [2024-10-13 06:59:18,718 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]. [2024-10-13 06:59:18,722 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:18" (1/1) ... [2024-10-13 06:59:18,723 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:18" (1/1) ... [2024-10-13 06:59:18,731 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:18" (1/1) ... [2024-10-13 06:59:18,733 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:18" (1/1) ... [2024-10-13 06:59:18,735 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:18" (1/1) ... [2024-10-13 06:59:18,740 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:18" (1/1) ... [2024-10-13 06:59:18,743 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 06:59:18,747 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 06:59:18,747 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 06:59:18,747 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 06:59:18,748 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:18" (1/1) ... [2024-10-13 06:59:18,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 06:59:18,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 06:59:18,798 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) [2024-10-13 06:59:18,802 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 [2024-10-13 06:59:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 06:59:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 06:59:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-13 06:59:18,852 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-13 06:59:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-13 06:59:18,852 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-13 06:59:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-13 06:59:18,853 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-13 06:59:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-10-13 06:59:18,854 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-10-13 06:59:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 06:59:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 06:59:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 06:59:18,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 06:59:18,856 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 06:59:19,003 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 06:59:19,006 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 06:59:19,197 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 06:59:19,197 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 06:59:19,272 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 06:59:19,273 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-13 06:59:19,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:59:19 BoogieIcfgContainer [2024-10-13 06:59:19,273 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 06:59:19,275 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 06:59:19,276 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 06:59:19,279 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 06:59:19,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:59:18" (1/3) ... [2024-10-13 06:59:19,280 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b6f5b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:59:19, skipping insertion in model container [2024-10-13 06:59:19,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:18" (2/3) ... [2024-10-13 06:59:19,281 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b6f5b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:59:19, skipping insertion in model container [2024-10-13 06:59:19,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:59:19" (3/3) ... [2024-10-13 06:59:19,282 INFO L112 eAbstractionObserver]: Analyzing ICFG safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-10-13 06:59:19,295 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 06:59:19,295 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 06:59:19,295 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 06:59:19,343 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 06:59:19,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 45 transitions, 106 flow [2024-10-13 06:59:19,407 INFO L124 PetriNetUnfolderBase]: 1/41 cut-off events. [2024-10-13 06:59:19,407 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 06:59:19,414 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 4. Compared 77 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. [2024-10-13 06:59:19,418 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 45 transitions, 106 flow [2024-10-13 06:59:19,422 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 38 transitions, 88 flow [2024-10-13 06:59:19,435 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 06:59:19,444 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;@7597ed8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 06:59:19,445 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-13 06:59:19,464 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 06:59:19,466 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2024-10-13 06:59:19,467 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 06:59:19,467 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:59:19,468 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:59:19,468 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)] === [2024-10-13 06:59:19,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:59:19,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1328358322, now seen corresponding path program 1 times [2024-10-13 06:59:19,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:59:19,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432654152] [2024-10-13 06:59:19,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:59:19,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:59:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:59:20,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:59:20,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:59:20,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432654152] [2024-10-13 06:59:20,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432654152] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:59:20,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:59:20,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 06:59:20,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331950276] [2024-10-13 06:59:20,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:59:20,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 06:59:20,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:59:20,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 06:59:20,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 06:59:20,276 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 45 [2024-10-13 06:59:20,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 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) [2024-10-13 06:59:20,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:59:20,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 45 [2024-10-13 06:59:20,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:59:20,791 INFO L124 PetriNetUnfolderBase]: 1275/2167 cut-off events. [2024-10-13 06:59:20,792 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-10-13 06:59:20,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4127 conditions, 2167 events. 1275/2167 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 14045 event pairs, 757 based on Foata normal form. 64/2202 useless extension candidates. Maximal degree in co-relation 4115. Up to 1441 conditions per place. [2024-10-13 06:59:20,813 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 30 selfloop transitions, 3 changer transitions 27/77 dead transitions. [2024-10-13 06:59:20,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 77 transitions, 295 flow [2024-10-13 06:59:20,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 06:59:20,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 06:59:20,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 209 transitions. [2024-10-13 06:59:20,828 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6634920634920635 [2024-10-13 06:59:20,830 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 88 flow. Second operand 7 states and 209 transitions. [2024-10-13 06:59:20,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 77 transitions, 295 flow [2024-10-13 06:59:20,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 77 transitions, 288 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 06:59:20,839 INFO L231 Difference]: Finished difference. Result has 58 places, 40 transitions, 119 flow [2024-10-13 06:59:20,843 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} [2024-10-13 06:59:20,849 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2024-10-13 06:59:20,850 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 40 transitions, 119 flow [2024-10-13 06:59:20,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 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) [2024-10-13 06:59:20,850 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:59:20,850 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:59:20,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 06:59:20,851 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)] === [2024-10-13 06:59:20,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:59:20,852 INFO L85 PathProgramCache]: Analyzing trace with hash -653206641, now seen corresponding path program 1 times [2024-10-13 06:59:20,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:59:20,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492278918] [2024-10-13 06:59:20,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:59:20,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:59:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:59:21,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:59:21,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:59:21,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492278918] [2024-10-13 06:59:21,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492278918] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:59:21,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:59:21,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 06:59:21,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111264228] [2024-10-13 06:59:21,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:59:21,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 06:59:21,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:59:21,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 06:59:21,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 06:59:21,113 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 45 [2024-10-13 06:59:21,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 40 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 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) [2024-10-13 06:59:21,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:59:21,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 45 [2024-10-13 06:59:21,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:59:21,476 INFO L124 PetriNetUnfolderBase]: 1115/1925 cut-off events. [2024-10-13 06:59:21,476 INFO L125 PetriNetUnfolderBase]: For 1030/1030 co-relation queries the response was YES. [2024-10-13 06:59:21,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4552 conditions, 1925 events. 1115/1925 cut-off events. For 1030/1030 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 12709 event pairs, 211 based on Foata normal form. 48/1918 useless extension candidates. Maximal degree in co-relation 4537. Up to 1141 conditions per place. [2024-10-13 06:59:21,494 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 28 selfloop transitions, 3 changer transitions 25/73 dead transitions. [2024-10-13 06:59:21,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 73 transitions, 321 flow [2024-10-13 06:59:21,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 06:59:21,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 06:59:21,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 204 transitions. [2024-10-13 06:59:21,497 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6476190476190476 [2024-10-13 06:59:21,497 INFO L175 Difference]: Start difference. First operand has 58 places, 40 transitions, 119 flow. Second operand 7 states and 204 transitions. [2024-10-13 06:59:21,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 73 transitions, 321 flow [2024-10-13 06:59:21,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 73 transitions, 304 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-10-13 06:59:21,511 INFO L231 Difference]: Finished difference. Result has 62 places, 40 transitions, 129 flow [2024-10-13 06:59:21,511 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} [2024-10-13 06:59:21,512 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2024-10-13 06:59:21,512 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 40 transitions, 129 flow [2024-10-13 06:59:21,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 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) [2024-10-13 06:59:21,513 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:59:21,513 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:59:21,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 06:59:21,513 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)] === [2024-10-13 06:59:21,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:59:21,514 INFO L85 PathProgramCache]: Analyzing trace with hash -328127249, now seen corresponding path program 1 times [2024-10-13 06:59:21,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:59:21,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101233867] [2024-10-13 06:59:21,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:59:21,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:59:21,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:59:21,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:59:21,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:59:21,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101233867] [2024-10-13 06:59:21,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101233867] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:59:21,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:59:21,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 06:59:21,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417755664] [2024-10-13 06:59:21,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:59:21,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 06:59:21,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:59:21,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 06:59:21,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 06:59:21,723 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 45 [2024-10-13 06:59:21,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 40 transitions, 129 flow. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:59:21,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:59:21,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 45 [2024-10-13 06:59:21,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:59:22,319 INFO L124 PetriNetUnfolderBase]: 2085/3511 cut-off events. [2024-10-13 06:59:22,319 INFO L125 PetriNetUnfolderBase]: For 2743/2743 co-relation queries the response was YES. [2024-10-13 06:59:22,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8442 conditions, 3511 events. 2085/3511 cut-off events. For 2743/2743 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 23514 event pairs, 229 based on Foata normal form. 90/3558 useless extension candidates. Maximal degree in co-relation 8423. Up to 1577 conditions per place. [2024-10-13 06:59:22,343 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 55 selfloop transitions, 13 changer transitions 58/142 dead transitions. [2024-10-13 06:59:22,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 142 transitions, 727 flow [2024-10-13 06:59:22,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 06:59:22,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-13 06:59:22,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 388 transitions. [2024-10-13 06:59:22,349 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6632478632478632 [2024-10-13 06:59:22,350 INFO L175 Difference]: Start difference. First operand has 62 places, 40 transitions, 129 flow. Second operand 13 states and 388 transitions. [2024-10-13 06:59:22,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 142 transitions, 727 flow [2024-10-13 06:59:22,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 142 transitions, 681 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-10-13 06:59:22,373 INFO L231 Difference]: Finished difference. Result has 75 places, 50 transitions, 258 flow [2024-10-13 06:59:22,373 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} [2024-10-13 06:59:22,374 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 24 predicate places. [2024-10-13 06:59:22,374 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 50 transitions, 258 flow [2024-10-13 06:59:22,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:59:22,375 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:59:22,375 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:59:22,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 06:59:22,375 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)] === [2024-10-13 06:59:22,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:59:22,376 INFO L85 PathProgramCache]: Analyzing trace with hash 842735000, now seen corresponding path program 1 times [2024-10-13 06:59:22,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:59:22,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000391411] [2024-10-13 06:59:22,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:59:22,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:59:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:59:22,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:59:22,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:59:22,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000391411] [2024-10-13 06:59:22,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000391411] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:59:22,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:59:22,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 06:59:22,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302434206] [2024-10-13 06:59:22,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:59:22,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 06:59:22,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:59:22,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 06:59:22,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 06:59:22,555 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 45 [2024-10-13 06:59:22,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 50 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 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) [2024-10-13 06:59:22,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:59:22,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 45 [2024-10-13 06:59:22,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:59:22,957 INFO L124 PetriNetUnfolderBase]: 1579/2816 cut-off events. [2024-10-13 06:59:22,958 INFO L125 PetriNetUnfolderBase]: For 11125/11155 co-relation queries the response was YES. [2024-10-13 06:59:22,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10294 conditions, 2816 events. 1579/2816 cut-off events. For 11125/11155 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 20112 event pairs, 573 based on Foata normal form. 78/2800 useless extension candidates. Maximal degree in co-relation 10268. Up to 1645 conditions per place. [2024-10-13 06:59:22,989 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 52 selfloop transitions, 11 changer transitions 8/89 dead transitions. [2024-10-13 06:59:22,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 89 transitions, 639 flow [2024-10-13 06:59:22,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 06:59:22,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 06:59:22,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 208 transitions. [2024-10-13 06:59:22,991 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6603174603174603 [2024-10-13 06:59:22,991 INFO L175 Difference]: Start difference. First operand has 75 places, 50 transitions, 258 flow. Second operand 7 states and 208 transitions. [2024-10-13 06:59:22,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 89 transitions, 639 flow [2024-10-13 06:59:23,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 89 transitions, 545 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-10-13 06:59:23,010 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 308 flow [2024-10-13 06:59:23,010 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=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=308, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2024-10-13 06:59:23,012 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 18 predicate places. [2024-10-13 06:59:23,012 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 308 flow [2024-10-13 06:59:23,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 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) [2024-10-13 06:59:23,013 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:59:23,013 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] [2024-10-13 06:59:23,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 06:59:23,013 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)] === [2024-10-13 06:59:23,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:59:23,014 INFO L85 PathProgramCache]: Analyzing trace with hash -7120144, now seen corresponding path program 1 times [2024-10-13 06:59:23,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:59:23,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2157603] [2024-10-13 06:59:23,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:59:23,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:59:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:59:23,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:59:23,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:59:23,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2157603] [2024-10-13 06:59:23,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2157603] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:59:23,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:59:23,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 06:59:23,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426092934] [2024-10-13 06:59:23,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:59:23,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 06:59:23,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:59:23,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 06:59:23,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-13 06:59:23,227 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 45 [2024-10-13 06:59:23,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 308 flow. Second operand has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 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) [2024-10-13 06:59:23,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:59:23,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 45 [2024-10-13 06:59:23,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:59:23,773 INFO L124 PetriNetUnfolderBase]: 2404/4138 cut-off events. [2024-10-13 06:59:23,773 INFO L125 PetriNetUnfolderBase]: For 9581/9583 co-relation queries the response was YES. [2024-10-13 06:59:23,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13303 conditions, 4138 events. 2404/4138 cut-off events. For 9581/9583 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 29721 event pairs, 614 based on Foata normal form. 54/4064 useless extension candidates. Maximal degree in co-relation 13279. Up to 1301 conditions per place. [2024-10-13 06:59:23,807 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 38 selfloop transitions, 5 changer transitions 57/116 dead transitions. [2024-10-13 06:59:23,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 116 transitions, 908 flow [2024-10-13 06:59:23,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 06:59:23,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 06:59:23,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 240 transitions. [2024-10-13 06:59:23,809 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-13 06:59:23,809 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 308 flow. Second operand 8 states and 240 transitions. [2024-10-13 06:59:23,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 116 transitions, 908 flow [2024-10-13 06:59:23,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 116 transitions, 858 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-10-13 06:59:23,828 INFO L231 Difference]: Finished difference. Result has 80 places, 42 transitions, 210 flow [2024-10-13 06:59:23,829 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=210, PETRI_PLACES=80, PETRI_TRANSITIONS=42} [2024-10-13 06:59:23,830 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 29 predicate places. [2024-10-13 06:59:23,831 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 42 transitions, 210 flow [2024-10-13 06:59:23,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 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) [2024-10-13 06:59:23,832 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:59:23,832 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] [2024-10-13 06:59:23,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 06:59:23,832 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)] === [2024-10-13 06:59:23,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:59:23,833 INFO L85 PathProgramCache]: Analyzing trace with hash 610323105, now seen corresponding path program 1 times [2024-10-13 06:59:23,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:59:23,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960238429] [2024-10-13 06:59:23,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:59:23,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:59:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:59:23,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:59:23,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:59:23,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960238429] [2024-10-13 06:59:23,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960238429] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:59:24,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:59:24,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 06:59:24,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430528022] [2024-10-13 06:59:24,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:59:24,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 06:59:24,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:59:24,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 06:59:24,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 06:59:24,022 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 45 [2024-10-13 06:59:24,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 42 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:59:24,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:59:24,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 45 [2024-10-13 06:59:24,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:59:24,360 INFO L124 PetriNetUnfolderBase]: 1332/2433 cut-off events. [2024-10-13 06:59:24,360 INFO L125 PetriNetUnfolderBase]: For 8470/8840 co-relation queries the response was YES. [2024-10-13 06:59:24,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7463 conditions, 2433 events. 1332/2433 cut-off events. For 8470/8840 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 17011 event pairs, 423 based on Foata normal form. 54/2271 useless extension candidates. Maximal degree in co-relation 7433. Up to 602 conditions per place. [2024-10-13 06:59:24,384 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 25 selfloop transitions, 5 changer transitions 25/76 dead transitions. [2024-10-13 06:59:24,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 76 transitions, 461 flow [2024-10-13 06:59:24,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 06:59:24,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 06:59:24,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 237 transitions. [2024-10-13 06:59:24,387 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6583333333333333 [2024-10-13 06:59:24,387 INFO L175 Difference]: Start difference. First operand has 80 places, 42 transitions, 210 flow. Second operand 8 states and 237 transitions. [2024-10-13 06:59:24,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 76 transitions, 461 flow [2024-10-13 06:59:24,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 76 transitions, 385 flow, removed 20 selfloop flow, removed 14 redundant places. [2024-10-13 06:59:24,398 INFO L231 Difference]: Finished difference. Result has 71 places, 42 transitions, 191 flow [2024-10-13 06:59:24,399 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} [2024-10-13 06:59:24,399 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 20 predicate places. [2024-10-13 06:59:24,400 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 42 transitions, 191 flow [2024-10-13 06:59:24,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:59:24,400 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:59:24,400 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] [2024-10-13 06:59:24,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 06:59:24,400 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)] === [2024-10-13 06:59:24,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:59:24,401 INFO L85 PathProgramCache]: Analyzing trace with hash 461614344, now seen corresponding path program 1 times [2024-10-13 06:59:24,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:59:24,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922424294] [2024-10-13 06:59:24,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:59:24,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:59:24,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:59:24,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:59:24,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:59:24,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922424294] [2024-10-13 06:59:24,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922424294] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:59:24,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:59:24,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 06:59:24,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105478613] [2024-10-13 06:59:24,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:59:24,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 06:59:24,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:59:24,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 06:59:24,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 06:59:24,491 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 45 [2024-10-13 06:59:24,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 42 transitions, 191 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2024-10-13 06:59:24,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:59:24,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 45 [2024-10-13 06:59:24,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:59:24,794 INFO L124 PetriNetUnfolderBase]: 2066/3562 cut-off events. [2024-10-13 06:59:24,795 INFO L125 PetriNetUnfolderBase]: For 5224/5603 co-relation queries the response was YES. [2024-10-13 06:59:24,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9038 conditions, 3562 events. 2066/3562 cut-off events. For 5224/5603 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 24108 event pairs, 660 based on Foata normal form. 141/3508 useless extension candidates. Maximal degree in co-relation 9014. Up to 1475 conditions per place. [2024-10-13 06:59:24,827 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 32 selfloop transitions, 6 changer transitions 0/60 dead transitions. [2024-10-13 06:59:24,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 60 transitions, 307 flow [2024-10-13 06:59:24,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 06:59:24,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 06:59:24,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-10-13 06:59:24,829 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2024-10-13 06:59:24,829 INFO L175 Difference]: Start difference. First operand has 71 places, 42 transitions, 191 flow. Second operand 4 states and 132 transitions. [2024-10-13 06:59:24,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 60 transitions, 307 flow [2024-10-13 06:59:24,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 60 transitions, 283 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-10-13 06:59:24,849 INFO L231 Difference]: Finished difference. Result has 64 places, 47 transitions, 213 flow [2024-10-13 06:59:24,849 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=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=213, PETRI_PLACES=64, PETRI_TRANSITIONS=47} [2024-10-13 06:59:24,850 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2024-10-13 06:59:24,850 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 47 transitions, 213 flow [2024-10-13 06:59:24,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2024-10-13 06:59:24,851 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:59:24,851 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] [2024-10-13 06:59:24,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 06:59:24,851 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)] === [2024-10-13 06:59:24,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:59:24,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1414421647, now seen corresponding path program 1 times [2024-10-13 06:59:24,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:59:24,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356348590] [2024-10-13 06:59:24,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:59:24,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:59:24,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:59:24,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:59:24,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:59:24,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356348590] [2024-10-13 06:59:24,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356348590] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:59:24,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:59:24,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 06:59:24,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893358180] [2024-10-13 06:59:24,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:59:24,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 06:59:24,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:59:24,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 06:59:24,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 06:59:24,998 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 45 [2024-10-13 06:59:24,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 47 transitions, 213 flow. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 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) [2024-10-13 06:59:24,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:59:24,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 45 [2024-10-13 06:59:25,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:59:25,363 INFO L124 PetriNetUnfolderBase]: 2028/3506 cut-off events. [2024-10-13 06:59:25,364 INFO L125 PetriNetUnfolderBase]: For 3267/4518 co-relation queries the response was YES. [2024-10-13 06:59:25,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9460 conditions, 3506 events. 2028/3506 cut-off events. For 3267/4518 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 22789 event pairs, 362 based on Foata normal form. 156/3481 useless extension candidates. Maximal degree in co-relation 9440. Up to 1492 conditions per place. [2024-10-13 06:59:25,392 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 40 selfloop transitions, 10 changer transitions 0/72 dead transitions. [2024-10-13 06:59:25,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 72 transitions, 388 flow [2024-10-13 06:59:25,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 06:59:25,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 06:59:25,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 167 transitions. [2024-10-13 06:59:25,394 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7422222222222222 [2024-10-13 06:59:25,394 INFO L175 Difference]: Start difference. First operand has 64 places, 47 transitions, 213 flow. Second operand 5 states and 167 transitions. [2024-10-13 06:59:25,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 72 transitions, 388 flow [2024-10-13 06:59:25,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 72 transitions, 385 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 06:59:25,398 INFO L231 Difference]: Finished difference. Result has 69 places, 52 transitions, 278 flow [2024-10-13 06:59:25,398 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=278, PETRI_PLACES=69, PETRI_TRANSITIONS=52} [2024-10-13 06:59:25,399 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 18 predicate places. [2024-10-13 06:59:25,399 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 52 transitions, 278 flow [2024-10-13 06:59:25,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 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) [2024-10-13 06:59:25,400 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:59:25,400 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] [2024-10-13 06:59:25,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 06:59:25,400 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)] === [2024-10-13 06:59:25,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:59:25,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1996321098, now seen corresponding path program 1 times [2024-10-13 06:59:25,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:59:25,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002781538] [2024-10-13 06:59:25,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:59:25,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:59:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:59:25,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:59:25,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:59:25,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002781538] [2024-10-13 06:59:25,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002781538] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:59:25,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:59:25,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 06:59:25,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087878073] [2024-10-13 06:59:25,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:59:25,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 06:59:25,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:59:25,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 06:59:25,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-13 06:59:25,507 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 45 [2024-10-13 06:59:25,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 52 transitions, 278 flow. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:59:25,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:59:25,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 45 [2024-10-13 06:59:25,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:59:25,821 INFO L124 PetriNetUnfolderBase]: 1728/2946 cut-off events. [2024-10-13 06:59:25,821 INFO L125 PetriNetUnfolderBase]: For 4475/7081 co-relation queries the response was YES. [2024-10-13 06:59:25,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9085 conditions, 2946 events. 1728/2946 cut-off events. For 4475/7081 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 17716 event pairs, 124 based on Foata normal form. 154/2950 useless extension candidates. Maximal degree in co-relation 9062. Up to 1232 conditions per place. [2024-10-13 06:59:25,848 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 46 selfloop transitions, 14 changer transitions 0/82 dead transitions. [2024-10-13 06:59:25,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 82 transitions, 501 flow [2024-10-13 06:59:25,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 06:59:25,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 06:59:25,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 200 transitions. [2024-10-13 06:59:25,849 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7407407407407407 [2024-10-13 06:59:25,850 INFO L175 Difference]: Start difference. First operand has 69 places, 52 transitions, 278 flow. Second operand 6 states and 200 transitions. [2024-10-13 06:59:25,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 82 transitions, 501 flow [2024-10-13 06:59:25,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 82 transitions, 485 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-13 06:59:25,857 INFO L231 Difference]: Finished difference. Result has 74 places, 57 transitions, 348 flow [2024-10-13 06:59:25,857 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=348, PETRI_PLACES=74, PETRI_TRANSITIONS=57} [2024-10-13 06:59:25,861 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 23 predicate places. [2024-10-13 06:59:25,861 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 57 transitions, 348 flow [2024-10-13 06:59:25,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:59:25,861 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:59:25,861 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] [2024-10-13 06:59:25,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 06:59:25,862 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)] === [2024-10-13 06:59:25,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:59:25,863 INFO L85 PathProgramCache]: Analyzing trace with hash -701924076, now seen corresponding path program 1 times [2024-10-13 06:59:25,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:59:25,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191890959] [2024-10-13 06:59:25,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:59:25,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:59:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:59:25,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:59:25,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:59:25,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191890959] [2024-10-13 06:59:25,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191890959] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:59:25,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:59:25,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 06:59:25,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003481933] [2024-10-13 06:59:25,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:59:25,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 06:59:25,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:59:25,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 06:59:25,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 06:59:26,013 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 45 [2024-10-13 06:59:26,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 57 transitions, 348 flow. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 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) [2024-10-13 06:59:26,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:59:26,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 45 [2024-10-13 06:59:26,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:59:26,451 INFO L124 PetriNetUnfolderBase]: 1933/3755 cut-off events. [2024-10-13 06:59:26,451 INFO L125 PetriNetUnfolderBase]: For 8164/9225 co-relation queries the response was YES. [2024-10-13 06:59:26,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11849 conditions, 3755 events. 1933/3755 cut-off events. For 8164/9225 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 28108 event pairs, 559 based on Foata normal form. 106/3444 useless extension candidates. Maximal degree in co-relation 11824. Up to 1294 conditions per place. [2024-10-13 06:59:26,482 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 29 selfloop transitions, 2 changer transitions 10/79 dead transitions. [2024-10-13 06:59:26,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 79 transitions, 510 flow [2024-10-13 06:59:26,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 06:59:26,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 06:59:26,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-10-13 06:59:26,484 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-13 06:59:26,484 INFO L175 Difference]: Start difference. First operand has 74 places, 57 transitions, 348 flow. Second operand 6 states and 180 transitions. [2024-10-13 06:59:26,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 79 transitions, 510 flow [2024-10-13 06:59:26,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 79 transitions, 479 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-10-13 06:59:26,495 INFO L231 Difference]: Finished difference. Result has 80 places, 58 transitions, 342 flow [2024-10-13 06:59:26,496 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=342, PETRI_PLACES=80, PETRI_TRANSITIONS=58} [2024-10-13 06:59:26,498 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 29 predicate places. [2024-10-13 06:59:26,499 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 58 transitions, 342 flow [2024-10-13 06:59:26,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 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) [2024-10-13 06:59:26,499 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:59:26,499 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] [2024-10-13 06:59:26,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 06:59:26,499 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)] === [2024-10-13 06:59:26,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:59:26,500 INFO L85 PathProgramCache]: Analyzing trace with hash 754274482, now seen corresponding path program 2 times [2024-10-13 06:59:26,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:59:26,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539953106] [2024-10-13 06:59:26,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:59:26,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:59:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:59:26,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:59:26,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:59:26,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539953106] [2024-10-13 06:59:26,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539953106] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:59:26,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:59:26,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 06:59:26,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13756249] [2024-10-13 06:59:26,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:59:26,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 06:59:26,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:59:26,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 06:59:26,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-13 06:59:26,626 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 45 [2024-10-13 06:59:26,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 58 transitions, 342 flow. Second operand has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 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) [2024-10-13 06:59:26,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:59:26,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 45 [2024-10-13 06:59:26,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:59:27,023 INFO L124 PetriNetUnfolderBase]: 2389/3798 cut-off events. [2024-10-13 06:59:27,023 INFO L125 PetriNetUnfolderBase]: For 7082/9831 co-relation queries the response was YES. [2024-10-13 06:59:27,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12122 conditions, 3798 events. 2389/3798 cut-off events. For 7082/9831 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 22884 event pairs, 95 based on Foata normal form. 181/3786 useless extension candidates. Maximal degree in co-relation 12094. Up to 1628 conditions per place. [2024-10-13 06:59:27,049 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 44 selfloop transitions, 18 changer transitions 0/85 dead transitions. [2024-10-13 06:59:27,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 85 transitions, 532 flow [2024-10-13 06:59:27,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 06:59:27,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 06:59:27,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 225 transitions. [2024-10-13 06:59:27,051 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2024-10-13 06:59:27,051 INFO L175 Difference]: Start difference. First operand has 80 places, 58 transitions, 342 flow. Second operand 7 states and 225 transitions. [2024-10-13 06:59:27,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 85 transitions, 532 flow [2024-10-13 06:59:27,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 85 transitions, 506 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-10-13 06:59:27,065 INFO L231 Difference]: Finished difference. Result has 81 places, 59 transitions, 379 flow [2024-10-13 06:59:27,065 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=379, PETRI_PLACES=81, PETRI_TRANSITIONS=59} [2024-10-13 06:59:27,065 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 30 predicate places. [2024-10-13 06:59:27,065 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 59 transitions, 379 flow [2024-10-13 06:59:27,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 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) [2024-10-13 06:59:27,066 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:59:27,066 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] [2024-10-13 06:59:27,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 06:59:27,066 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)] === [2024-10-13 06:59:27,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:59:27,067 INFO L85 PathProgramCache]: Analyzing trace with hash 453035319, now seen corresponding path program 1 times [2024-10-13 06:59:27,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:59:27,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016533150] [2024-10-13 06:59:27,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:59:27,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:59:27,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:59:27,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:59:27,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:59:27,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016533150] [2024-10-13 06:59:27,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016533150] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:59:27,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:59:27,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 06:59:27,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404399859] [2024-10-13 06:59:27,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:59:27,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 06:59:27,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:59:27,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 06:59:27,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 06:59:27,227 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 45 [2024-10-13 06:59:27,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 59 transitions, 379 flow. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2024-10-13 06:59:27,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:59:27,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 45 [2024-10-13 06:59:27,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:59:27,780 INFO L124 PetriNetUnfolderBase]: 2384/4430 cut-off events. [2024-10-13 06:59:27,781 INFO L125 PetriNetUnfolderBase]: For 12893/13585 co-relation queries the response was YES. [2024-10-13 06:59:27,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14755 conditions, 4430 events. 2384/4430 cut-off events. For 12893/13585 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 34590 event pairs, 560 based on Foata normal form. 53/3956 useless extension candidates. Maximal degree in co-relation 14728. Up to 1640 conditions per place. [2024-10-13 06:59:27,817 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 0 selfloop transitions, 0 changer transitions 85/85 dead transitions. [2024-10-13 06:59:27,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 85 transitions, 584 flow [2024-10-13 06:59:27,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 06:59:27,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 06:59:27,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 193 transitions. [2024-10-13 06:59:27,819 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6126984126984127 [2024-10-13 06:59:27,820 INFO L175 Difference]: Start difference. First operand has 81 places, 59 transitions, 379 flow. Second operand 7 states and 193 transitions. [2024-10-13 06:59:27,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 85 transitions, 584 flow [2024-10-13 06:59:27,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 85 transitions, 513 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-10-13 06:59:27,878 INFO L231 Difference]: Finished difference. Result has 79 places, 0 transitions, 0 flow [2024-10-13 06:59:27,878 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=79, PETRI_TRANSITIONS=0} [2024-10-13 06:59:27,879 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 28 predicate places. [2024-10-13 06:59:27,879 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 0 transitions, 0 flow [2024-10-13 06:59:27,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2024-10-13 06:59:27,885 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2024-10-13 06:59:27,886 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2024-10-13 06:59:27,886 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-10-13 06:59:27,887 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-10-13 06:59:27,888 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2024-10-13 06:59:27,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 06:59:27,889 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:59:27,892 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-13 06:59:27,893 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-13 06:59:27,900 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 06:59:27 BasicIcfg [2024-10-13 06:59:27,900 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-13 06:59:27,901 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 06:59:27,901 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 06:59:27,901 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 06:59:27,901 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:59:19" (3/4) ... [2024-10-13 06:59:27,903 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-13 06:59:27,906 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2024-10-13 06:59:27,907 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2024-10-13 06:59:27,907 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2024-10-13 06:59:27,907 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2024-10-13 06:59:27,912 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 42 nodes and edges [2024-10-13 06:59:27,913 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-10-13 06:59:27,913 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-10-13 06:59:27,914 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-13 06:59:28,006 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-13 06:59:28,006 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-13 06:59:28,006 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 06:59:28,007 INFO L158 Benchmark]: Toolchain (without parser) took 9971.95ms. Allocated memory was 125.8MB in the beginning and 471.9MB in the end (delta: 346.0MB). Free memory was 55.5MB in the beginning and 266.4MB in the end (delta: -210.9MB). Peak memory consumption was 137.7MB. Max. memory is 16.1GB. [2024-10-13 06:59:28,007 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 125.8MB. Free memory is still 85.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 06:59:28,007 INFO L158 Benchmark]: CACSL2BoogieTranslator took 580.20ms. Allocated memory was 125.8MB in the beginning and 165.7MB in the end (delta: 39.8MB). Free memory was 55.3MB in the beginning and 119.1MB in the end (delta: -63.8MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. [2024-10-13 06:59:28,007 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.96ms. Allocated memory is still 165.7MB. Free memory was 119.1MB in the beginning and 117.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 06:59:28,008 INFO L158 Benchmark]: Boogie Preprocessor took 73.99ms. Allocated memory is still 165.7MB. Free memory was 117.0MB in the beginning and 114.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 06:59:28,008 INFO L158 Benchmark]: RCFGBuilder took 526.48ms. Allocated memory is still 165.7MB. Free memory was 114.9MB in the beginning and 94.0MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-10-13 06:59:28,008 INFO L158 Benchmark]: TraceAbstraction took 8625.12ms. Allocated memory was 165.7MB in the beginning and 471.9MB in the end (delta: 306.2MB). Free memory was 94.0MB in the beginning and 270.6MB in the end (delta: -176.6MB). Peak memory consumption was 130.6MB. Max. memory is 16.1GB. [2024-10-13 06:59:28,008 INFO L158 Benchmark]: Witness Printer took 105.51ms. Allocated memory is still 471.9MB. Free memory was 270.6MB in the beginning and 266.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-13 06:59:28,011 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 125.8MB. Free memory is still 85.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 580.20ms. Allocated memory was 125.8MB in the beginning and 165.7MB in the end (delta: 39.8MB). Free memory was 55.3MB in the beginning and 119.1MB in the end (delta: -63.8MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.96ms. Allocated memory is still 165.7MB. Free memory was 119.1MB in the beginning and 117.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.99ms. Allocated memory is still 165.7MB. Free memory was 117.0MB in the beginning and 114.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 526.48ms. Allocated memory is still 165.7MB. Free memory was 114.9MB in the beginning and 94.0MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 8625.12ms. Allocated memory was 165.7MB in the beginning and 471.9MB in the end (delta: 306.2MB). Free memory was 94.0MB in the beginning and 270.6MB in the end (delta: -176.6MB). Peak memory consumption was 130.6MB. Max. memory is 16.1GB. * Witness Printer took 105.51ms. Allocated memory is still 471.9MB. Free memory was 270.6MB in the beginning and 266.4MB 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: 8.5s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 704 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 635 mSDsluCounter, 317 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 218 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1310 IncrementalHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 99 mSDtfsCounter, 1310 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=379occurred in iteration=11, InterpolantAutomatonStates: 85, 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, 2.0s InterpolantComputationTime, 287 NumberOfCodeBlocks, 287 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 275 ConstructedInterpolants, 0 QuantifiedInterpolants, 1139 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! [2024-10-13 06:59:28,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE