./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-difference-det.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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 ../../../trunk/examples/svcomp/weaver/popl20-difference-det.wvr.c -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 38e3acb82ec05e672eff9207911c10948d6c695f982992ce82b68981a799bba7 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 16:49:20,856 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 16:49:20,932 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 16:49:20,937 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 16:49:20,937 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 16:49:20,962 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 16:49:20,962 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 16:49:20,963 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 16:49:20,963 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 16:49:20,966 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 16:49:20,966 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 16:49:20,967 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 16:49:20,967 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 16:49:20,968 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 16:49:20,969 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 16:49:20,969 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 16:49:20,969 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 16:49:20,969 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 16:49:20,970 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 16:49:20,970 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 16:49:20,970 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 16:49:20,970 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 16:49:20,971 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 16:49:20,971 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 16:49:20,971 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 16:49:20,971 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 16:49:20,971 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 16:49:20,972 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 16:49:20,972 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 16:49:20,972 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 16:49:20,973 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 16:49:20,973 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 16:49:20,974 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:49:20,974 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 16:49:20,974 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 16:49:20,974 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 16:49:20,974 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 16:49:20,974 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 16:49:20,975 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 16:49:20,975 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 16:49:20,975 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 16:49:20,975 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 16:49:20,975 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 16:49:20,976 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38e3acb82ec05e672eff9207911c10948d6c695f982992ce82b68981a799bba7 [2024-06-27 16:49:21,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 16:49:21,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 16:49:21,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 16:49:21,201 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 16:49:21,202 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 16:49:21,203 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-difference-det.wvr.c [2024-06-27 16:49:22,301 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 16:49:22,515 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 16:49:22,516 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-difference-det.wvr.c [2024-06-27 16:49:22,525 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5c5ab50a/8e9969ff21fb4d048f014d0bd2d88ffd/FLAG8bf5de991 [2024-06-27 16:49:22,539 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5c5ab50a/8e9969ff21fb4d048f014d0bd2d88ffd [2024-06-27 16:49:22,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 16:49:22,542 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 16:49:22,545 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 16:49:22,545 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 16:49:22,548 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 16:49:22,549 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:49:22" (1/1) ... [2024-06-27 16:49:22,550 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ddccf38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:49:22, skipping insertion in model container [2024-06-27 16:49:22,550 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:49:22" (1/1) ... [2024-06-27 16:49:22,568 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 16:49:22,716 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-difference-det.wvr.c[2559,2572] [2024-06-27 16:49:22,719 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:49:22,725 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 16:49:22,739 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-difference-det.wvr.c[2559,2572] [2024-06-27 16:49:22,740 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:49:22,754 INFO L206 MainTranslator]: Completed translation [2024-06-27 16:49:22,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:49:22 WrapperNode [2024-06-27 16:49:22,754 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 16:49:22,755 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 16:49:22,755 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 16:49:22,755 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 16:49:22,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:49:22" (1/1) ... [2024-06-27 16:49:22,775 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:49:22" (1/1) ... [2024-06-27 16:49:22,799 INFO L138 Inliner]: procedures = 22, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 101 [2024-06-27 16:49:22,799 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 16:49:22,800 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 16:49:22,800 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 16:49:22,800 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 16:49:22,807 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:49:22" (1/1) ... [2024-06-27 16:49:22,808 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:49:22" (1/1) ... [2024-06-27 16:49:22,810 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:49:22" (1/1) ... [2024-06-27 16:49:22,819 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]. [2024-06-27 16:49:22,819 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:49:22" (1/1) ... [2024-06-27 16:49:22,819 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:49:22" (1/1) ... [2024-06-27 16:49:22,826 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:49:22" (1/1) ... [2024-06-27 16:49:22,829 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:49:22" (1/1) ... [2024-06-27 16:49:22,830 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:49:22" (1/1) ... [2024-06-27 16:49:22,831 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:49:22" (1/1) ... [2024-06-27 16:49:22,832 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 16:49:22,833 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 16:49:22,833 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 16:49:22,833 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 16:49:22,834 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:49:22" (1/1) ... [2024-06-27 16:49:22,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:49:22,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:49:22,858 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) [2024-06-27 16:49:22,862 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 [2024-06-27 16:49:22,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 16:49:22,895 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-27 16:49:22,895 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-27 16:49:22,895 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-27 16:49:22,895 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-27 16:49:22,896 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-27 16:49:22,896 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-27 16:49:22,897 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-06-27 16:49:22,897 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-06-27 16:49:22,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 16:49:22,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 16:49:22,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 16:49:22,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 16:49:22,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 16:49:22,899 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 16:49:22,970 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 16:49:22,972 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 16:49:23,120 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 16:49:23,120 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 16:49:23,209 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 16:49:23,209 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-06-27 16:49:23,210 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:49:23 BoogieIcfgContainer [2024-06-27 16:49:23,210 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 16:49:23,212 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 16:49:23,212 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 16:49:23,214 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 16:49:23,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 04:49:22" (1/3) ... [2024-06-27 16:49:23,214 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ba7c5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:49:23, skipping insertion in model container [2024-06-27 16:49:23,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:49:22" (2/3) ... [2024-06-27 16:49:23,215 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ba7c5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:49:23, skipping insertion in model container [2024-06-27 16:49:23,215 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:49:23" (3/3) ... [2024-06-27 16:49:23,216 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-difference-det.wvr.c [2024-06-27 16:49:23,221 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 16:49:23,228 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 16:49:23,228 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-06-27 16:49:23,228 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 16:49:23,269 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-06-27 16:49:23,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 40 transitions, 108 flow [2024-06-27 16:49:23,369 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2024-06-27 16:49:23,369 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-27 16:49:23,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 36 events. 4/36 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-06-27 16:49:23,372 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 40 transitions, 108 flow [2024-06-27 16:49:23,374 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 35 transitions, 94 flow [2024-06-27 16:49:23,381 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 16:49:23,385 INFO L357 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, mHoare=true, 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;@3f4ce743, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 16:49:23,386 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-06-27 16:49:23,404 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 16:49:23,406 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-06-27 16:49:23,406 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-27 16:49:23,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:23,407 INFO L208 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] [2024-06-27 16:49:23,407 INFO L420 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)] === [2024-06-27 16:49:23,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:23,416 INFO L85 PathProgramCache]: Analyzing trace with hash 313037294, now seen corresponding path program 1 times [2024-06-27 16:49:23,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:23,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386820759] [2024-06-27 16:49:23,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:23,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:23,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:23,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:23,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:23,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386820759] [2024-06-27 16:49:23,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386820759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:49:23,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:49:23,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 16:49:23,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257386801] [2024-06-27 16:49:23,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:49:23,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:49:23,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:23,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:49:23,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:49:23,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 16:49:23,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-06-27 16:49:23,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:23,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 16:49:23,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:24,175 INFO L124 PetriNetUnfolderBase]: 3331/4557 cut-off events. [2024-06-27 16:49:24,176 INFO L125 PetriNetUnfolderBase]: For 348/348 co-relation queries the response was YES. [2024-06-27 16:49:24,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9300 conditions, 4557 events. 3331/4557 cut-off events. For 348/348 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 19744 event pairs, 587 based on Foata normal form. 1/4545 useless extension candidates. Maximal degree in co-relation 8250. Up to 3534 conditions per place. [2024-06-27 16:49:24,199 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 47 selfloop transitions, 5 changer transitions 1/58 dead transitions. [2024-06-27 16:49:24,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 58 transitions, 267 flow [2024-06-27 16:49:24,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:49:24,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:49:24,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-06-27 16:49:24,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-06-27 16:49:24,211 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 94 flow. Second operand 3 states and 81 transitions. [2024-06-27 16:49:24,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 58 transitions, 267 flow [2024-06-27 16:49:24,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 58 transitions, 237 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 16:49:24,221 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 111 flow [2024-06-27 16:49:24,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2024-06-27 16:49:24,225 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -5 predicate places. [2024-06-27 16:49:24,225 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 111 flow [2024-06-27 16:49:24,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-06-27 16:49:24,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:24,226 INFO L208 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] [2024-06-27 16:49:24,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 16:49:24,226 INFO L420 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)] === [2024-06-27 16:49:24,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:24,227 INFO L85 PathProgramCache]: Analyzing trace with hash -189752120, now seen corresponding path program 1 times [2024-06-27 16:49:24,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:24,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207583654] [2024-06-27 16:49:24,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:24,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:24,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:24,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:24,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207583654] [2024-06-27 16:49:24,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207583654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:49:24,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:49:24,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:49:24,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809507357] [2024-06-27 16:49:24,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:49:24,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:49:24,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:24,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:49:24,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:49:24,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-27 16:49:24,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 111 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-06-27 16:49:24,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:24,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-27 16:49:24,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:24,971 INFO L124 PetriNetUnfolderBase]: 7556/10174 cut-off events. [2024-06-27 16:49:24,971 INFO L125 PetriNetUnfolderBase]: For 1714/1726 co-relation queries the response was YES. [2024-06-27 16:49:24,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22978 conditions, 10174 events. 7556/10174 cut-off events. For 1714/1726 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 51462 event pairs, 2226 based on Foata normal form. 0/9634 useless extension candidates. Maximal degree in co-relation 4501. Up to 5136 conditions per place. [2024-06-27 16:49:25,015 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 90 selfloop transitions, 10 changer transitions 0/104 dead transitions. [2024-06-27 16:49:25,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 104 transitions, 498 flow [2024-06-27 16:49:25,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:49:25,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:49:25,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-06-27 16:49:25,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.635 [2024-06-27 16:49:25,017 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 111 flow. Second operand 5 states and 127 transitions. [2024-06-27 16:49:25,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 104 transitions, 498 flow [2024-06-27 16:49:25,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 104 transitions, 483 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 16:49:25,020 INFO L231 Difference]: Finished difference. Result has 45 places, 48 transitions, 169 flow [2024-06-27 16:49:25,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=169, PETRI_PLACES=45, PETRI_TRANSITIONS=48} [2024-06-27 16:49:25,021 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2024-06-27 16:49:25,021 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 48 transitions, 169 flow [2024-06-27 16:49:25,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-06-27 16:49:25,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:25,022 INFO L208 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] [2024-06-27 16:49:25,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 16:49:25,022 INFO L420 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)] === [2024-06-27 16:49:25,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:25,023 INFO L85 PathProgramCache]: Analyzing trace with hash -67583410, now seen corresponding path program 2 times [2024-06-27 16:49:25,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:25,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987172685] [2024-06-27 16:49:25,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:25,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:25,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:25,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:25,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987172685] [2024-06-27 16:49:25,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987172685] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:49:25,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425389152] [2024-06-27 16:49:25,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 16:49:25,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:49:25,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:49:25,097 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:49:25,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-27 16:49:25,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 16:49:25,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:49:25,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjunts are in the unsatisfiable core [2024-06-27 16:49:25,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:49:25,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:25,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:49:25,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:25,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425389152] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:49:25,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:49:25,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-06-27 16:49:25,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826751668] [2024-06-27 16:49:25,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:49:25,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 16:49:25,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:25,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 16:49:25,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-27 16:49:25,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-27 16:49:25,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 48 transitions, 169 flow. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 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) [2024-06-27 16:49:25,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:25,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-27 16:49:25,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:26,541 INFO L124 PetriNetUnfolderBase]: 13211/17330 cut-off events. [2024-06-27 16:49:26,541 INFO L125 PetriNetUnfolderBase]: For 6127/6127 co-relation queries the response was YES. [2024-06-27 16:49:26,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45000 conditions, 17330 events. 13211/17330 cut-off events. For 6127/6127 co-relation queries the response was YES. Maximal size of possible extension queue 810. Compared 87727 event pairs, 978 based on Foata normal form. 280/17608 useless extension candidates. Maximal degree in co-relation 24868. Up to 3827 conditions per place. [2024-06-27 16:49:26,696 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 234 selfloop transitions, 36 changer transitions 0/273 dead transitions. [2024-06-27 16:49:26,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 273 transitions, 1371 flow [2024-06-27 16:49:26,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 16:49:26,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 16:49:26,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 340 transitions. [2024-06-27 16:49:26,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-06-27 16:49:26,702 INFO L175 Difference]: Start difference. First operand has 45 places, 48 transitions, 169 flow. Second operand 14 states and 340 transitions. [2024-06-27 16:49:26,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 273 transitions, 1371 flow [2024-06-27 16:49:26,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 273 transitions, 1371 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 16:49:26,715 INFO L231 Difference]: Finished difference. Result has 64 places, 76 transitions, 405 flow [2024-06-27 16:49:26,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=405, PETRI_PLACES=64, PETRI_TRANSITIONS=76} [2024-06-27 16:49:26,716 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 20 predicate places. [2024-06-27 16:49:26,716 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 76 transitions, 405 flow [2024-06-27 16:49:26,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 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) [2024-06-27 16:49:26,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:26,717 INFO L208 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] [2024-06-27 16:49:26,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-27 16:49:26,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:49:26,929 INFO L420 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)] === [2024-06-27 16:49:26,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:26,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1569690990, now seen corresponding path program 3 times [2024-06-27 16:49:26,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:26,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088703991] [2024-06-27 16:49:26,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:26,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:26,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:27,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:27,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:27,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088703991] [2024-06-27 16:49:27,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088703991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:49:27,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:49:27,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:49:27,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093286813] [2024-06-27 16:49:27,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:49:27,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:49:27,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:27,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:49:27,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:49:27,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-27 16:49:27,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 76 transitions, 405 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-06-27 16:49:27,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:27,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-27 16:49:27,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:28,392 INFO L124 PetriNetUnfolderBase]: 16615/22403 cut-off events. [2024-06-27 16:49:28,392 INFO L125 PetriNetUnfolderBase]: For 29608/29656 co-relation queries the response was YES. [2024-06-27 16:49:28,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69000 conditions, 22403 events. 16615/22403 cut-off events. For 29608/29656 co-relation queries the response was YES. Maximal size of possible extension queue 971. Compared 122884 event pairs, 4127 based on Foata normal form. 88/22376 useless extension candidates. Maximal degree in co-relation 53173. Up to 9177 conditions per place. [2024-06-27 16:49:28,493 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 123 selfloop transitions, 19 changer transitions 0/153 dead transitions. [2024-06-27 16:49:28,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 153 transitions, 1021 flow [2024-06-27 16:49:28,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:49:28,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:49:28,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-06-27 16:49:28,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.63 [2024-06-27 16:49:28,495 INFO L175 Difference]: Start difference. First operand has 64 places, 76 transitions, 405 flow. Second operand 5 states and 126 transitions. [2024-06-27 16:49:28,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 153 transitions, 1021 flow [2024-06-27 16:49:28,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 153 transitions, 974 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-06-27 16:49:28,720 INFO L231 Difference]: Finished difference. Result has 70 places, 84 transitions, 504 flow [2024-06-27 16:49:28,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=504, PETRI_PLACES=70, PETRI_TRANSITIONS=84} [2024-06-27 16:49:28,721 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 26 predicate places. [2024-06-27 16:49:28,722 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 84 transitions, 504 flow [2024-06-27 16:49:28,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-06-27 16:49:28,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:28,722 INFO L208 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] [2024-06-27 16:49:28,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 16:49:28,722 INFO L420 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)] === [2024-06-27 16:49:28,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:28,723 INFO L85 PathProgramCache]: Analyzing trace with hash -974718849, now seen corresponding path program 1 times [2024-06-27 16:49:28,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:28,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644615915] [2024-06-27 16:49:28,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:28,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:28,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:28,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:28,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644615915] [2024-06-27 16:49:28,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644615915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:49:28,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:49:28,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 16:49:28,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177033046] [2024-06-27 16:49:28,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:49:28,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:49:28,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:28,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:49:28,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:49:28,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 16:49:28,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 84 transitions, 504 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:49:28,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:28,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 16:49:28,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:29,688 INFO L124 PetriNetUnfolderBase]: 11059/15265 cut-off events. [2024-06-27 16:49:29,688 INFO L125 PetriNetUnfolderBase]: For 28499/28750 co-relation queries the response was YES. [2024-06-27 16:49:29,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48884 conditions, 15265 events. 11059/15265 cut-off events. For 28499/28750 co-relation queries the response was YES. Maximal size of possible extension queue 727. Compared 83395 event pairs, 3789 based on Foata normal form. 511/15595 useless extension candidates. Maximal degree in co-relation 43493. Up to 9103 conditions per place. [2024-06-27 16:49:29,762 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 94 selfloop transitions, 3 changer transitions 0/111 dead transitions. [2024-06-27 16:49:29,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 111 transitions, 837 flow [2024-06-27 16:49:29,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:49:29,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:49:29,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-06-27 16:49:29,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2024-06-27 16:49:29,763 INFO L175 Difference]: Start difference. First operand has 70 places, 84 transitions, 504 flow. Second operand 3 states and 82 transitions. [2024-06-27 16:49:29,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 111 transitions, 837 flow [2024-06-27 16:49:29,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 111 transitions, 800 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-06-27 16:49:29,866 INFO L231 Difference]: Finished difference. Result has 72 places, 84 transitions, 492 flow [2024-06-27 16:49:29,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=492, PETRI_PLACES=72, PETRI_TRANSITIONS=84} [2024-06-27 16:49:29,867 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 28 predicate places. [2024-06-27 16:49:29,867 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 84 transitions, 492 flow [2024-06-27 16:49:29,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:49:29,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:29,868 INFO L208 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] [2024-06-27 16:49:29,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 16:49:29,868 INFO L420 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)] === [2024-06-27 16:49:29,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:29,868 INFO L85 PathProgramCache]: Analyzing trace with hash 624714587, now seen corresponding path program 1 times [2024-06-27 16:49:29,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:29,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499293575] [2024-06-27 16:49:29,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:29,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:29,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:29,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:29,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:29,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499293575] [2024-06-27 16:49:29,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499293575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:49:29,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:49:29,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 16:49:29,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628300441] [2024-06-27 16:49:29,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:49:29,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:49:29,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:29,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:49:29,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:49:29,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 16:49:29,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 84 transitions, 492 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:49:29,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:29,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 16:49:29,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:30,532 INFO L124 PetriNetUnfolderBase]: 9006/12572 cut-off events. [2024-06-27 16:49:30,533 INFO L125 PetriNetUnfolderBase]: For 20937/21092 co-relation queries the response was YES. [2024-06-27 16:49:30,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40116 conditions, 12572 events. 9006/12572 cut-off events. For 20937/21092 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 67226 event pairs, 2619 based on Foata normal form. 309/12754 useless extension candidates. Maximal degree in co-relation 36198. Up to 7318 conditions per place. [2024-06-27 16:49:30,588 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 92 selfloop transitions, 3 changer transitions 3/112 dead transitions. [2024-06-27 16:49:30,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 112 transitions, 826 flow [2024-06-27 16:49:30,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:49:30,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:49:30,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-06-27 16:49:30,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-06-27 16:49:30,590 INFO L175 Difference]: Start difference. First operand has 72 places, 84 transitions, 492 flow. Second operand 3 states and 78 transitions. [2024-06-27 16:49:30,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 112 transitions, 826 flow [2024-06-27 16:49:30,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 112 transitions, 823 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 16:49:30,628 INFO L231 Difference]: Finished difference. Result has 74 places, 81 transitions, 472 flow [2024-06-27 16:49:30,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=472, PETRI_PLACES=74, PETRI_TRANSITIONS=81} [2024-06-27 16:49:30,631 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 30 predicate places. [2024-06-27 16:49:30,631 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 81 transitions, 472 flow [2024-06-27 16:49:30,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:49:30,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:30,632 INFO L208 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] [2024-06-27 16:49:30,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 16:49:30,635 INFO L420 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)] === [2024-06-27 16:49:30,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:30,635 INFO L85 PathProgramCache]: Analyzing trace with hash -462380530, now seen corresponding path program 1 times [2024-06-27 16:49:30,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:30,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536965972] [2024-06-27 16:49:30,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:30,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:30,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:30,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:30,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:30,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536965972] [2024-06-27 16:49:30,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536965972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:49:30,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:49:30,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:49:30,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516855070] [2024-06-27 16:49:30,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:49:30,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:49:30,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:30,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:49:30,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:49:30,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-27 16:49:30,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 81 transitions, 472 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-06-27 16:49:30,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:30,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-27 16:49:30,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:31,377 INFO L124 PetriNetUnfolderBase]: 10466/14189 cut-off events. [2024-06-27 16:49:31,377 INFO L125 PetriNetUnfolderBase]: For 20749/20779 co-relation queries the response was YES. [2024-06-27 16:49:31,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46152 conditions, 14189 events. 10466/14189 cut-off events. For 20749/20779 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 72821 event pairs, 3716 based on Foata normal form. 36/14221 useless extension candidates. Maximal degree in co-relation 41880. Up to 7734 conditions per place. [2024-06-27 16:49:31,449 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 103 selfloop transitions, 12 changer transitions 16/137 dead transitions. [2024-06-27 16:49:31,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 137 transitions, 944 flow [2024-06-27 16:49:31,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:49:31,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:49:31,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-06-27 16:49:31,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-06-27 16:49:31,451 INFO L175 Difference]: Start difference. First operand has 74 places, 81 transitions, 472 flow. Second operand 5 states and 128 transitions. [2024-06-27 16:49:31,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 137 transitions, 944 flow [2024-06-27 16:49:31,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 137 transitions, 934 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 16:49:31,510 INFO L231 Difference]: Finished difference. Result has 77 places, 81 transitions, 499 flow [2024-06-27 16:49:31,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=499, PETRI_PLACES=77, PETRI_TRANSITIONS=81} [2024-06-27 16:49:31,510 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 33 predicate places. [2024-06-27 16:49:31,511 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 81 transitions, 499 flow [2024-06-27 16:49:31,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-06-27 16:49:31,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:31,511 INFO L208 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] [2024-06-27 16:49:31,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 16:49:31,511 INFO L420 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)] === [2024-06-27 16:49:31,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:31,512 INFO L85 PathProgramCache]: Analyzing trace with hash -960797022, now seen corresponding path program 2 times [2024-06-27 16:49:31,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:31,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995042029] [2024-06-27 16:49:31,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:31,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:31,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:31,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:31,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995042029] [2024-06-27 16:49:31,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995042029] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:49:31,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172262800] [2024-06-27 16:49:31,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 16:49:31,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:49:31,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:49:31,581 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:49:31,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-27 16:49:31,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 16:49:31,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:49:31,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjunts are in the unsatisfiable core [2024-06-27 16:49:31,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:49:31,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:31,700 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:49:31,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:31,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172262800] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:49:31,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:49:31,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-06-27 16:49:31,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440612641] [2024-06-27 16:49:31,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:49:31,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 16:49:31,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:31,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 16:49:31,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-27 16:49:31,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-27 16:49:31,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 81 transitions, 499 flow. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 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) [2024-06-27 16:49:31,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:31,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-27 16:49:31,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:33,056 INFO L124 PetriNetUnfolderBase]: 14081/18750 cut-off events. [2024-06-27 16:49:33,056 INFO L125 PetriNetUnfolderBase]: For 32587/32587 co-relation queries the response was YES. [2024-06-27 16:49:33,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62174 conditions, 18750 events. 14081/18750 cut-off events. For 32587/32587 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 93939 event pairs, 715 based on Foata normal form. 174/18923 useless extension candidates. Maximal degree in co-relation 54261. Up to 3374 conditions per place. [2024-06-27 16:49:33,180 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 222 selfloop transitions, 71 changer transitions 2/298 dead transitions. [2024-06-27 16:49:33,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 298 transitions, 2020 flow [2024-06-27 16:49:33,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 16:49:33,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 16:49:33,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 320 transitions. [2024-06-27 16:49:33,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-06-27 16:49:33,182 INFO L175 Difference]: Start difference. First operand has 77 places, 81 transitions, 499 flow. Second operand 14 states and 320 transitions. [2024-06-27 16:49:33,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 298 transitions, 2020 flow [2024-06-27 16:49:33,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 298 transitions, 1962 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 16:49:33,420 INFO L231 Difference]: Finished difference. Result has 94 places, 123 transitions, 1015 flow [2024-06-27 16:49:33,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1015, PETRI_PLACES=94, PETRI_TRANSITIONS=123} [2024-06-27 16:49:33,421 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 50 predicate places. [2024-06-27 16:49:33,421 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 123 transitions, 1015 flow [2024-06-27 16:49:33,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 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) [2024-06-27 16:49:33,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:33,422 INFO L208 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] [2024-06-27 16:49:33,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-06-27 16:49:33,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-06-27 16:49:33,633 INFO L420 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)] === [2024-06-27 16:49:33,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:33,634 INFO L85 PathProgramCache]: Analyzing trace with hash 555086900, now seen corresponding path program 4 times [2024-06-27 16:49:33,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:33,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953969689] [2024-06-27 16:49:33,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:33,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:33,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:33,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:33,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953969689] [2024-06-27 16:49:33,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953969689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:49:33,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:49:33,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:49:33,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395370490] [2024-06-27 16:49:33,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:49:33,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:49:33,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:33,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:49:33,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:49:33,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-27 16:49:33,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 123 transitions, 1015 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:49:33,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:33,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-27 16:49:33,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:34,972 INFO L124 PetriNetUnfolderBase]: 13817/18486 cut-off events. [2024-06-27 16:49:34,973 INFO L125 PetriNetUnfolderBase]: For 48369/48369 co-relation queries the response was YES. [2024-06-27 16:49:35,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68045 conditions, 18486 events. 13817/18486 cut-off events. For 48369/48369 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 93367 event pairs, 5052 based on Foata normal form. 110/18583 useless extension candidates. Maximal degree in co-relation 61597. Up to 11240 conditions per place. [2024-06-27 16:49:35,106 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 138 selfloop transitions, 30 changer transitions 0/171 dead transitions. [2024-06-27 16:49:35,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 171 transitions, 1541 flow [2024-06-27 16:49:35,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:49:35,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:49:35,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-06-27 16:49:35,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.62 [2024-06-27 16:49:35,107 INFO L175 Difference]: Start difference. First operand has 94 places, 123 transitions, 1015 flow. Second operand 5 states and 124 transitions. [2024-06-27 16:49:35,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 171 transitions, 1541 flow [2024-06-27 16:49:35,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 171 transitions, 1467 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-27 16:49:35,436 INFO L231 Difference]: Finished difference. Result has 95 places, 122 transitions, 1003 flow [2024-06-27 16:49:35,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1003, PETRI_PLACES=95, PETRI_TRANSITIONS=122} [2024-06-27 16:49:35,436 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 51 predicate places. [2024-06-27 16:49:35,437 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 122 transitions, 1003 flow [2024-06-27 16:49:35,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:49:35,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:35,437 INFO L208 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] [2024-06-27 16:49:35,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 16:49:35,437 INFO L420 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)] === [2024-06-27 16:49:35,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:35,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1478788968, now seen corresponding path program 3 times [2024-06-27 16:49:35,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:35,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474525310] [2024-06-27 16:49:35,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:35,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:35,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:35,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:35,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:35,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474525310] [2024-06-27 16:49:35,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474525310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:49:35,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:49:35,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:49:35,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674652163] [2024-06-27 16:49:35,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:49:35,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:49:35,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:35,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:49:35,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:49:35,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-27 16:49:35,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 122 transitions, 1003 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-06-27 16:49:35,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:35,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-27 16:49:35,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:36,704 INFO L124 PetriNetUnfolderBase]: 12918/17564 cut-off events. [2024-06-27 16:49:36,704 INFO L125 PetriNetUnfolderBase]: For 46295/46307 co-relation queries the response was YES. [2024-06-27 16:49:36,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64632 conditions, 17564 events. 12918/17564 cut-off events. For 46295/46307 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 93077 event pairs, 4387 based on Foata normal form. 44/17599 useless extension candidates. Maximal degree in co-relation 59203. Up to 9950 conditions per place. [2024-06-27 16:49:36,843 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 124 selfloop transitions, 31 changer transitions 2/175 dead transitions. [2024-06-27 16:49:36,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 175 transitions, 1576 flow [2024-06-27 16:49:36,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:49:36,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:49:36,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-27 16:49:36,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-27 16:49:36,845 INFO L175 Difference]: Start difference. First operand has 95 places, 122 transitions, 1003 flow. Second operand 5 states and 125 transitions. [2024-06-27 16:49:36,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 175 transitions, 1576 flow [2024-06-27 16:49:37,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 175 transitions, 1493 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 16:49:37,154 INFO L231 Difference]: Finished difference. Result has 98 places, 127 transitions, 1095 flow [2024-06-27 16:49:37,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1095, PETRI_PLACES=98, PETRI_TRANSITIONS=127} [2024-06-27 16:49:37,155 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 54 predicate places. [2024-06-27 16:49:37,155 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 127 transitions, 1095 flow [2024-06-27 16:49:37,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-06-27 16:49:37,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:37,155 INFO L208 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] [2024-06-27 16:49:37,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 16:49:37,156 INFO L420 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)] === [2024-06-27 16:49:37,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:37,156 INFO L85 PathProgramCache]: Analyzing trace with hash 860222506, now seen corresponding path program 4 times [2024-06-27 16:49:37,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:37,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847658813] [2024-06-27 16:49:37,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:37,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:37,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:37,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:37,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847658813] [2024-06-27 16:49:37,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847658813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:49:37,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:49:37,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:49:37,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68932823] [2024-06-27 16:49:37,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:49:37,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:49:37,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:37,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:49:37,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:49:37,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-27 16:49:37,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 127 transitions, 1095 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-06-27 16:49:37,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:37,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-27 16:49:37,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:38,563 INFO L124 PetriNetUnfolderBase]: 14332/19181 cut-off events. [2024-06-27 16:49:38,564 INFO L125 PetriNetUnfolderBase]: For 50455/50479 co-relation queries the response was YES. [2024-06-27 16:49:38,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71861 conditions, 19181 events. 14332/19181 cut-off events. For 50455/50479 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 97804 event pairs, 5221 based on Foata normal form. 126/19306 useless extension candidates. Maximal degree in co-relation 68911. Up to 11469 conditions per place. [2024-06-27 16:49:38,713 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 150 selfloop transitions, 40 changer transitions 0/193 dead transitions. [2024-06-27 16:49:38,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 193 transitions, 1734 flow [2024-06-27 16:49:38,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:49:38,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:49:38,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-27 16:49:38,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-06-27 16:49:38,715 INFO L175 Difference]: Start difference. First operand has 98 places, 127 transitions, 1095 flow. Second operand 6 states and 145 transitions. [2024-06-27 16:49:38,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 193 transitions, 1734 flow [2024-06-27 16:49:38,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 193 transitions, 1681 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-27 16:49:38,964 INFO L231 Difference]: Finished difference. Result has 102 places, 131 transitions, 1181 flow [2024-06-27 16:49:38,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1042, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1181, PETRI_PLACES=102, PETRI_TRANSITIONS=131} [2024-06-27 16:49:38,965 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 58 predicate places. [2024-06-27 16:49:38,965 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 131 transitions, 1181 flow [2024-06-27 16:49:38,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-06-27 16:49:38,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:38,966 INFO L208 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] [2024-06-27 16:49:38,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 16:49:38,966 INFO L420 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)] === [2024-06-27 16:49:38,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:38,966 INFO L85 PathProgramCache]: Analyzing trace with hash 679948238, now seen corresponding path program 5 times [2024-06-27 16:49:38,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:38,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898554822] [2024-06-27 16:49:38,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:38,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:38,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:39,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:39,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:39,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898554822] [2024-06-27 16:49:39,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898554822] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:49:39,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17192042] [2024-06-27 16:49:39,050 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-06-27 16:49:39,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:49:39,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:49:39,073 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:49:39,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-06-27 16:49:39,156 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 16:49:39,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:49:39,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjunts are in the unsatisfiable core [2024-06-27 16:49:39,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:49:39,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:39,200 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:49:39,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:39,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17192042] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:49:39,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:49:39,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-06-27 16:49:39,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568134937] [2024-06-27 16:49:39,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:49:39,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 16:49:39,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:39,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 16:49:39,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-06-27 16:49:39,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-27 16:49:39,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 131 transitions, 1181 flow. Second operand has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:49:39,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:39,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-27 16:49:39,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:40,995 INFO L124 PetriNetUnfolderBase]: 18317/24367 cut-off events. [2024-06-27 16:49:40,996 INFO L125 PetriNetUnfolderBase]: For 59890/59890 co-relation queries the response was YES. [2024-06-27 16:49:41,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91680 conditions, 24367 events. 18317/24367 cut-off events. For 59890/59890 co-relation queries the response was YES. Maximal size of possible extension queue 966. Compared 127432 event pairs, 1500 based on Foata normal form. 143/24509 useless extension candidates. Maximal degree in co-relation 88368. Up to 4569 conditions per place. [2024-06-27 16:49:41,135 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 258 selfloop transitions, 84 changer transitions 0/345 dead transitions. [2024-06-27 16:49:41,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 345 transitions, 2754 flow [2024-06-27 16:49:41,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-27 16:49:41,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-27 16:49:41,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 357 transitions. [2024-06-27 16:49:41,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.595 [2024-06-27 16:49:41,137 INFO L175 Difference]: Start difference. First operand has 102 places, 131 transitions, 1181 flow. Second operand 15 states and 357 transitions. [2024-06-27 16:49:41,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 345 transitions, 2754 flow [2024-06-27 16:49:41,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 345 transitions, 2696 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 16:49:41,489 INFO L231 Difference]: Finished difference. Result has 120 places, 154 transitions, 1617 flow [2024-06-27 16:49:41,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1123, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1617, PETRI_PLACES=120, PETRI_TRANSITIONS=154} [2024-06-27 16:49:41,491 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 76 predicate places. [2024-06-27 16:49:41,491 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 154 transitions, 1617 flow [2024-06-27 16:49:41,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.0) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:49:41,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:41,492 INFO L208 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] [2024-06-27 16:49:41,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-06-27 16:49:41,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:49:41,702 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 16:49:41,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:41,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1357344238, now seen corresponding path program 5 times [2024-06-27 16:49:41,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:41,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658024242] [2024-06-27 16:49:41,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:41,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:41,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:41,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:41,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:41,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658024242] [2024-06-27 16:49:41,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658024242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:49:41,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:49:41,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:49:41,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246308000] [2024-06-27 16:49:41,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:49:41,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:49:41,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:41,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:49:41,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:49:41,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-27 16:49:41,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 154 transitions, 1617 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-06-27 16:49:41,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:41,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-27 16:49:41,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:43,214 INFO L124 PetriNetUnfolderBase]: 16716/22657 cut-off events. [2024-06-27 16:49:43,215 INFO L125 PetriNetUnfolderBase]: For 88287/88428 co-relation queries the response was YES. [2024-06-27 16:49:43,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91934 conditions, 22657 events. 16716/22657 cut-off events. For 88287/88428 co-relation queries the response was YES. Maximal size of possible extension queue 985. Compared 124272 event pairs, 6424 based on Foata normal form. 80/22632 useless extension candidates. Maximal degree in co-relation 86602. Up to 15086 conditions per place. [2024-06-27 16:49:43,414 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 136 selfloop transitions, 28 changer transitions 11/199 dead transitions. [2024-06-27 16:49:43,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 199 transitions, 2136 flow [2024-06-27 16:49:43,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:49:43,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:49:43,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-06-27 16:49:43,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.61 [2024-06-27 16:49:43,415 INFO L175 Difference]: Start difference. First operand has 120 places, 154 transitions, 1617 flow. Second operand 5 states and 122 transitions. [2024-06-27 16:49:43,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 199 transitions, 2136 flow [2024-06-27 16:49:44,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 199 transitions, 2112 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 16:49:44,037 INFO L231 Difference]: Finished difference. Result has 123 places, 153 transitions, 1639 flow [2024-06-27 16:49:44,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1593, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1639, PETRI_PLACES=123, PETRI_TRANSITIONS=153} [2024-06-27 16:49:44,037 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 79 predicate places. [2024-06-27 16:49:44,037 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 153 transitions, 1639 flow [2024-06-27 16:49:44,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-06-27 16:49:44,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:44,038 INFO L208 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] [2024-06-27 16:49:44,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 16:49:44,038 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 16:49:44,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:44,039 INFO L85 PathProgramCache]: Analyzing trace with hash 761143152, now seen corresponding path program 6 times [2024-06-27 16:49:44,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:44,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839709047] [2024-06-27 16:49:44,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:44,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:44,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:44,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:44,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839709047] [2024-06-27 16:49:44,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839709047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:49:44,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:49:44,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:49:44,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455038355] [2024-06-27 16:49:44,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:49:44,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:49:44,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:44,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:49:44,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:49:44,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-27 16:49:44,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 153 transitions, 1639 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-06-27 16:49:44,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:44,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-27 16:49:44,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:45,458 INFO L124 PetriNetUnfolderBase]: 16103/22033 cut-off events. [2024-06-27 16:49:45,458 INFO L125 PetriNetUnfolderBase]: For 97322/97502 co-relation queries the response was YES. [2024-06-27 16:49:45,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91142 conditions, 22033 events. 16103/22033 cut-off events. For 97322/97502 co-relation queries the response was YES. Maximal size of possible extension queue 978. Compared 122704 event pairs, 4643 based on Foata normal form. 57/22017 useless extension candidates. Maximal degree in co-relation 85885. Up to 10173 conditions per place. [2024-06-27 16:49:45,644 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 131 selfloop transitions, 40 changer transitions 2/199 dead transitions. [2024-06-27 16:49:45,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 199 transitions, 2190 flow [2024-06-27 16:49:45,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:49:45,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:49:45,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-06-27 16:49:45,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.615 [2024-06-27 16:49:45,646 INFO L175 Difference]: Start difference. First operand has 123 places, 153 transitions, 1639 flow. Second operand 5 states and 123 transitions. [2024-06-27 16:49:45,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 199 transitions, 2190 flow [2024-06-27 16:49:46,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 199 transitions, 2126 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 16:49:46,474 INFO L231 Difference]: Finished difference. Result has 123 places, 153 transitions, 1669 flow [2024-06-27 16:49:46,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1579, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1669, PETRI_PLACES=123, PETRI_TRANSITIONS=153} [2024-06-27 16:49:46,475 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 79 predicate places. [2024-06-27 16:49:46,475 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 153 transitions, 1669 flow [2024-06-27 16:49:46,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-06-27 16:49:46,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:46,475 INFO L208 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] [2024-06-27 16:49:46,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 16:49:46,475 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 16:49:46,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:46,476 INFO L85 PathProgramCache]: Analyzing trace with hash 492202918, now seen corresponding path program 6 times [2024-06-27 16:49:46,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:46,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844220658] [2024-06-27 16:49:46,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:46,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:46,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:46,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:46,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844220658] [2024-06-27 16:49:46,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844220658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:49:46,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:49:46,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:49:46,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890603700] [2024-06-27 16:49:46,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:49:46,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:49:46,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:46,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:49:46,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:49:46,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-27 16:49:46,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 153 transitions, 1669 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-06-27 16:49:46,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:46,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-27 16:49:46,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:48,185 INFO L124 PetriNetUnfolderBase]: 18791/24940 cut-off events. [2024-06-27 16:49:48,186 INFO L125 PetriNetUnfolderBase]: For 98376/98376 co-relation queries the response was YES. [2024-06-27 16:49:48,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101308 conditions, 24940 events. 18791/24940 cut-off events. For 98376/98376 co-relation queries the response was YES. Maximal size of possible extension queue 1029. Compared 129445 event pairs, 4706 based on Foata normal form. 230/25167 useless extension candidates. Maximal degree in co-relation 97617. Up to 10461 conditions per place. [2024-06-27 16:49:48,394 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 169 selfloop transitions, 45 changer transitions 1/218 dead transitions. [2024-06-27 16:49:48,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 218 transitions, 2372 flow [2024-06-27 16:49:48,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:49:48,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:49:48,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-27 16:49:48,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6125 [2024-06-27 16:49:48,395 INFO L175 Difference]: Start difference. First operand has 123 places, 153 transitions, 1669 flow. Second operand 6 states and 147 transitions. [2024-06-27 16:49:48,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 218 transitions, 2372 flow [2024-06-27 16:49:49,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 218 transitions, 2288 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 16:49:49,451 INFO L231 Difference]: Finished difference. Result has 123 places, 154 transitions, 1695 flow [2024-06-27 16:49:49,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1507, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1695, PETRI_PLACES=123, PETRI_TRANSITIONS=154} [2024-06-27 16:49:49,452 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 79 predicate places. [2024-06-27 16:49:49,452 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 154 transitions, 1695 flow [2024-06-27 16:49:49,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-06-27 16:49:49,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:49,452 INFO L208 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] [2024-06-27 16:49:49,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 16:49:49,453 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 16:49:49,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:49,453 INFO L85 PathProgramCache]: Analyzing trace with hash 933483450, now seen corresponding path program 7 times [2024-06-27 16:49:49,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:49,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169190663] [2024-06-27 16:49:49,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:49,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:49,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:49,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:49,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169190663] [2024-06-27 16:49:49,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169190663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:49:49,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:49:49,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:49:49,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761987286] [2024-06-27 16:49:49,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:49:49,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:49:49,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:49,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:49:49,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:49:49,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-27 16:49:49,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 154 transitions, 1695 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-06-27 16:49:49,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:49,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-27 16:49:49,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:51,026 INFO L124 PetriNetUnfolderBase]: 18283/24237 cut-off events. [2024-06-27 16:49:51,027 INFO L125 PetriNetUnfolderBase]: For 98372/98372 co-relation queries the response was YES. [2024-06-27 16:49:51,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98701 conditions, 24237 events. 18283/24237 cut-off events. For 98372/98372 co-relation queries the response was YES. Maximal size of possible extension queue 990. Compared 125396 event pairs, 5472 based on Foata normal form. 143/24377 useless extension candidates. Maximal degree in co-relation 95483. Up to 12158 conditions per place. [2024-06-27 16:49:51,230 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 156 selfloop transitions, 49 changer transitions 1/209 dead transitions. [2024-06-27 16:49:51,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 209 transitions, 2301 flow [2024-06-27 16:49:51,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:49:51,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:49:51,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-27 16:49:51,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-27 16:49:51,232 INFO L175 Difference]: Start difference. First operand has 123 places, 154 transitions, 1695 flow. Second operand 6 states and 140 transitions. [2024-06-27 16:49:51,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 209 transitions, 2301 flow [2024-06-27 16:49:52,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 209 transitions, 2190 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 16:49:52,092 INFO L231 Difference]: Finished difference. Result has 119 places, 152 transitions, 1644 flow [2024-06-27 16:49:52,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1566, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1644, PETRI_PLACES=119, PETRI_TRANSITIONS=152} [2024-06-27 16:49:52,093 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 75 predicate places. [2024-06-27 16:49:52,093 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 152 transitions, 1644 flow [2024-06-27 16:49:52,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-06-27 16:49:52,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:52,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:49:52,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 16:49:52,094 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 16:49:52,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:52,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1218718750, now seen corresponding path program 1 times [2024-06-27 16:49:52,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:52,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403244427] [2024-06-27 16:49:52,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:52,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:52,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:52,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:52,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403244427] [2024-06-27 16:49:52,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403244427] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:49:52,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197723493] [2024-06-27 16:49:52,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:52,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:49:52,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:49:52,156 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:49:52,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-06-27 16:49:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:52,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 9 conjunts are in the unsatisfiable core [2024-06-27 16:49:52,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:49:52,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:52,265 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:49:52,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 16:49:52,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197723493] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:49:52,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:49:52,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 6 [2024-06-27 16:49:52,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710453820] [2024-06-27 16:49:52,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:49:52,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 16:49:52,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:52,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 16:49:52,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 16:49:52,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 16:49:52,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 152 transitions, 1644 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 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) [2024-06-27 16:49:52,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:52,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 16:49:52,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:57,109 INFO L124 PetriNetUnfolderBase]: 37670/52655 cut-off events. [2024-06-27 16:49:57,109 INFO L125 PetriNetUnfolderBase]: For 252499/253791 co-relation queries the response was YES. [2024-06-27 16:49:57,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211471 conditions, 52655 events. 37670/52655 cut-off events. For 252499/253791 co-relation queries the response was YES. Maximal size of possible extension queue 1796. Compared 331642 event pairs, 3662 based on Foata normal form. 1864/54368 useless extension candidates. Maximal degree in co-relation 194979. Up to 19210 conditions per place. [2024-06-27 16:49:57,566 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 389 selfloop transitions, 22 changer transitions 4/463 dead transitions. [2024-06-27 16:49:57,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 463 transitions, 5621 flow [2024-06-27 16:49:57,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 16:49:57,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 16:49:57,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 214 transitions. [2024-06-27 16:49:57,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2024-06-27 16:49:57,568 INFO L175 Difference]: Start difference. First operand has 119 places, 152 transitions, 1644 flow. Second operand 7 states and 214 transitions. [2024-06-27 16:49:57,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 463 transitions, 5621 flow [2024-06-27 16:50:01,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 463 transitions, 4953 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 16:50:01,164 INFO L231 Difference]: Finished difference. Result has 116 places, 171 transitions, 1658 flow [2024-06-27 16:50:01,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1465, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1658, PETRI_PLACES=116, PETRI_TRANSITIONS=171} [2024-06-27 16:50:01,169 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 72 predicate places. [2024-06-27 16:50:01,170 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 171 transitions, 1658 flow [2024-06-27 16:50:01,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 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) [2024-06-27 16:50:01,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:50:01,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:50:01,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-06-27 16:50:01,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-06-27 16:50:01,374 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 16:50:01,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:50:01,374 INFO L85 PathProgramCache]: Analyzing trace with hash 836886338, now seen corresponding path program 2 times [2024-06-27 16:50:01,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:50:01,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578931755] [2024-06-27 16:50:01,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:50:01,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:50:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:50:01,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:50:01,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:50:01,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578931755] [2024-06-27 16:50:01,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578931755] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:50:01,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658174484] [2024-06-27 16:50:01,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 16:50:01,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:50:01,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:50:01,445 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:50:01,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-06-27 16:50:01,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 16:50:01,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:50:01,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 9 conjunts are in the unsatisfiable core [2024-06-27 16:50:01,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:50:01,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:50:01,572 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:50:01,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 16:50:01,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658174484] provided 1 perfect and 1 imperfect interpolant sequences [2024-06-27 16:50:01,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-06-27 16:50:01,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-06-27 16:50:01,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346609755] [2024-06-27 16:50:01,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:50:01,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 16:50:01,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:50:01,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 16:50:01,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 16:50:01,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 16:50:01,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 171 transitions, 1658 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:50:01,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:50:01,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 16:50:01,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:50:06,955 INFO L124 PetriNetUnfolderBase]: 52194/73013 cut-off events. [2024-06-27 16:50:06,955 INFO L125 PetriNetUnfolderBase]: For 287927/289335 co-relation queries the response was YES. [2024-06-27 16:50:07,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291060 conditions, 73013 events. 52194/73013 cut-off events. For 287927/289335 co-relation queries the response was YES. Maximal size of possible extension queue 2710. Compared 481395 event pairs, 9432 based on Foata normal form. 545/73339 useless extension candidates. Maximal degree in co-relation 263266. Up to 49393 conditions per place. [2024-06-27 16:50:07,682 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 255 selfloop transitions, 13 changer transitions 1/317 dead transitions. [2024-06-27 16:50:07,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 317 transitions, 3567 flow [2024-06-27 16:50:07,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 16:50:07,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 16:50:07,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-06-27 16:50:07,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.73125 [2024-06-27 16:50:07,684 INFO L175 Difference]: Start difference. First operand has 116 places, 171 transitions, 1658 flow. Second operand 4 states and 117 transitions. [2024-06-27 16:50:07,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 317 transitions, 3567 flow [2024-06-27 16:50:11,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 317 transitions, 3507 flow, removed 30 selfloop flow, removed 0 redundant places. [2024-06-27 16:50:11,861 INFO L231 Difference]: Finished difference. Result has 120 places, 181 transitions, 1723 flow [2024-06-27 16:50:11,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1598, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1723, PETRI_PLACES=120, PETRI_TRANSITIONS=181} [2024-06-27 16:50:11,861 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 76 predicate places. [2024-06-27 16:50:11,862 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 181 transitions, 1723 flow [2024-06-27 16:50:11,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:50:11,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:50:11,862 INFO L208 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] [2024-06-27 16:50:11,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-06-27 16:50:12,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-06-27 16:50:12,066 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 16:50:12,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:50:12,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1614370837, now seen corresponding path program 1 times [2024-06-27 16:50:12,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:50:12,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623513717] [2024-06-27 16:50:12,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:50:12,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:50:12,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:50:12,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 16:50:12,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:50:12,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623513717] [2024-06-27 16:50:12,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623513717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:50:12,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:50:12,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:50:12,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64983630] [2024-06-27 16:50:12,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:50:12,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:50:12,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:50:12,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:50:12,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:50:12,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-27 16:50:12,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 181 transitions, 1723 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-06-27 16:50:12,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:50:12,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-27 16:50:12,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand