./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-bad-ring.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 be394a9cdc866c1e1426a3fe296e99873bcf37ee5e7e1c9e487b239a3e0a8fbe --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:49:21,021 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:49:21,079 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:49:21,083 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:49:21,083 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:49:21,107 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:49:21,108 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:49:21,108 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:49:21,109 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:49:21,112 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:49:21,112 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:49:21,113 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:49:21,113 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:49:21,113 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:49:21,113 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:49:21,114 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:49:21,114 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:49:21,114 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:49:21,114 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:49:21,114 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:49:21,115 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:49:21,116 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:49:21,116 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:49:21,116 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:49:21,117 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:49:21,117 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:49:21,117 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:49:21,117 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:49:21,117 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:49:21,118 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:49:21,118 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:49:21,118 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:49:21,119 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:49:21,119 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:49:21,119 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:49:21,119 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:49:21,119 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:49:21,119 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:49:21,119 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:49:21,120 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:49:21,120 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:49:21,121 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:49:21,121 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be394a9cdc866c1e1426a3fe296e99873bcf37ee5e7e1c9e487b239a3e0a8fbe [2024-11-19 01:49:21,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:49:21,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:49:21,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:49:21,358 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:49:21,358 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:49:21,359 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2024-11-19 01:49:22,581 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:49:22,750 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:49:22,750 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2024-11-19 01:49:22,763 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca91c04fc/54386040d4c44f7a8c02bc0d73427b9f/FLAGe5d5c7f8f [2024-11-19 01:49:22,773 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca91c04fc/54386040d4c44f7a8c02bc0d73427b9f [2024-11-19 01:49:22,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:49:22,776 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:49:22,778 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:49:22,778 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:49:22,782 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:49:22,783 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:49:22" (1/1) ... [2024-11-19 01:49:22,784 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ea80c67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:22, skipping insertion in model container [2024-11-19 01:49:22,784 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:49:22" (1/1) ... [2024-11-19 01:49:22,801 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:49:22,981 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c[3986,3999] [2024-11-19 01:49:22,989 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:49:22,996 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:49:23,014 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c[3986,3999] [2024-11-19 01:49:23,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:49:23,031 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:49:23,032 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:23 WrapperNode [2024-11-19 01:49:23,032 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:49:23,033 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:49:23,033 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:49:23,033 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:49:23,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:23" (1/1) ... [2024-11-19 01:49:23,046 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:23" (1/1) ... [2024-11-19 01:49:23,068 INFO L138 Inliner]: procedures = 24, calls = 46, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 312 [2024-11-19 01:49:23,068 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:49:23,069 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:49:23,069 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:49:23,069 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:49:23,078 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:23" (1/1) ... [2024-11-19 01:49:23,078 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:23" (1/1) ... [2024-11-19 01:49:23,083 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:23" (1/1) ... [2024-11-19 01:49:23,102 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-19 01:49:23,102 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:23" (1/1) ... [2024-11-19 01:49:23,103 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:23" (1/1) ... [2024-11-19 01:49:23,112 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:23" (1/1) ... [2024-11-19 01:49:23,118 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:23" (1/1) ... [2024-11-19 01:49:23,120 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:23" (1/1) ... [2024-11-19 01:49:23,121 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:23" (1/1) ... [2024-11-19 01:49:23,128 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:49:23,128 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:49:23,129 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:49:23,129 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:49:23,129 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:23" (1/1) ... [2024-11-19 01:49:23,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:49:23,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:49:23,165 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 01:49:23,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 01:49:23,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:49:23,208 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 01:49:23,208 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 01:49:23,209 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 01:49:23,209 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 01:49:23,209 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 01:49:23,209 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 01:49:23,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:49:23,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 01:49:23,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 01:49:23,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 01:49:23,210 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 01:49:23,210 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 01:49:23,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 01:49:23,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:49:23,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:49:23,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 01:49:23,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 01:49:23,211 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 01:49:23,308 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:49:23,310 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:49:23,680 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:49:23,680 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:49:23,971 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:49:23,971 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-19 01:49:23,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:49:23 BoogieIcfgContainer [2024-11-19 01:49:23,972 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:49:23,973 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:49:23,974 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:49:23,977 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:49:23,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:49:22" (1/3) ... [2024-11-19 01:49:23,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@757a024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:49:23, skipping insertion in model container [2024-11-19 01:49:23,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:23" (2/3) ... [2024-11-19 01:49:23,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@757a024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:49:23, skipping insertion in model container [2024-11-19 01:49:23,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:49:23" (3/3) ... [2024-11-19 01:49:23,979 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring.wvr.c [2024-11-19 01:49:23,995 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:49:23,996 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:49:23,996 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:49:24,056 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-19 01:49:24,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 48 transitions, 117 flow [2024-11-19 01:49:24,122 INFO L124 PetriNetUnfolderBase]: 8/45 cut-off events. [2024-11-19 01:49:24,123 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 01:49:24,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 45 events. 8/45 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 71 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-11-19 01:49:24,127 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 48 transitions, 117 flow [2024-11-19 01:49:24,130 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 44 transitions, 106 flow [2024-11-19 01:49:24,140 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:49:24,148 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7303c426, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:49:24,148 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-19 01:49:24,164 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:49:24,164 INFO L124 PetriNetUnfolderBase]: 8/43 cut-off events. [2024-11-19 01:49:24,164 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 01:49:24,165 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:24,165 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:24,166 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:49:24,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:24,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1548629740, now seen corresponding path program 1 times [2024-11-19 01:49:24,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:24,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591550521] [2024-11-19 01:49:24,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:49:24,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:49:24,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:24,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:24,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591550521] [2024-11-19 01:49:24,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591550521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:49:24,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:49:24,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 01:49:24,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870766025] [2024-11-19 01:49:24,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:49:24,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 01:49:24,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:24,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 01:49:24,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 01:49:24,482 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-19 01:49:24,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 106 flow. Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:24,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:24,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-19 01:49:24,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:24,779 INFO L124 PetriNetUnfolderBase]: 1049/1799 cut-off events. [2024-11-19 01:49:24,780 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2024-11-19 01:49:24,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3314 conditions, 1799 events. 1049/1799 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9508 event pairs, 858 based on Foata normal form. 165/1779 useless extension candidates. Maximal degree in co-relation 3107. Up to 1394 conditions per place. [2024-11-19 01:49:24,800 INFO L140 encePairwiseOnDemand]: 46/48 looper letters, 32 selfloop transitions, 0 changer transitions 0/42 dead transitions. [2024-11-19 01:49:24,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 42 transitions, 166 flow [2024-11-19 01:49:24,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 01:49:24,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-19 01:49:24,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 60 transitions. [2024-11-19 01:49:24,812 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-19 01:49:24,814 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 106 flow. Second operand 2 states and 60 transitions. [2024-11-19 01:49:24,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 42 transitions, 166 flow [2024-11-19 01:49:24,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 42 transitions, 154 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-19 01:49:24,823 INFO L231 Difference]: Finished difference. Result has 41 places, 42 transitions, 90 flow [2024-11-19 01:49:24,825 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=90, PETRI_PLACES=41, PETRI_TRANSITIONS=42} [2024-11-19 01:49:24,829 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, -5 predicate places. [2024-11-19 01:49:24,830 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 42 transitions, 90 flow [2024-11-19 01:49:24,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:24,831 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:24,831 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:24,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:49:24,832 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:49:24,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:24,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1379772624, now seen corresponding path program 1 times [2024-11-19 01:49:24,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:24,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380540314] [2024-11-19 01:49:24,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:49:24,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:24,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:49:25,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:25,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:25,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380540314] [2024-11-19 01:49:25,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380540314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:49:25,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:49:25,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:49:25,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260606130] [2024-11-19 01:49:25,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:49:25,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:49:25,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:25,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:49:25,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:49:25,068 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-19 01:49:25,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 42 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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) [2024-11-19 01:49:25,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:25,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-19 01:49:25,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:25,295 INFO L124 PetriNetUnfolderBase]: 1040/1732 cut-off events. [2024-11-19 01:49:25,296 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-19 01:49:25,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3223 conditions, 1732 events. 1040/1732 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8672 event pairs, 266 based on Foata normal form. 33/1662 useless extension candidates. Maximal degree in co-relation 3220. Up to 1251 conditions per place. [2024-11-19 01:49:25,306 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 42 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2024-11-19 01:49:25,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 55 transitions, 208 flow [2024-11-19 01:49:25,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:49:25,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:49:25,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-11-19 01:49:25,309 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5902777777777778 [2024-11-19 01:49:25,309 INFO L175 Difference]: Start difference. First operand has 41 places, 42 transitions, 90 flow. Second operand 3 states and 85 transitions. [2024-11-19 01:49:25,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 55 transitions, 208 flow [2024-11-19 01:49:25,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 55 transitions, 208 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 01:49:25,312 INFO L231 Difference]: Finished difference. Result has 44 places, 44 transitions, 109 flow [2024-11-19 01:49:25,313 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=44, PETRI_TRANSITIONS=44} [2024-11-19 01:49:25,313 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, -2 predicate places. [2024-11-19 01:49:25,313 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 44 transitions, 109 flow [2024-11-19 01:49:25,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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) [2024-11-19 01:49:25,314 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:25,314 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:25,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:49:25,314 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:49:25,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:25,316 INFO L85 PathProgramCache]: Analyzing trace with hash 58375550, now seen corresponding path program 2 times [2024-11-19 01:49:25,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:25,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623674407] [2024-11-19 01:49:25,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:49:25,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:25,347 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:49:25,348 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:25,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:25,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:25,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623674407] [2024-11-19 01:49:25,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623674407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:49:25,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:49:25,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:49:25,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558511885] [2024-11-19 01:49:25,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:49:25,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:49:25,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:25,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:49:25,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:49:25,424 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-19 01:49:25,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 44 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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) [2024-11-19 01:49:25,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:25,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-19 01:49:25,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:25,579 INFO L124 PetriNetUnfolderBase]: 871/1554 cut-off events. [2024-11-19 01:49:25,580 INFO L125 PetriNetUnfolderBase]: For 239/241 co-relation queries the response was YES. [2024-11-19 01:49:25,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3137 conditions, 1554 events. 871/1554 cut-off events. For 239/241 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7971 event pairs, 315 based on Foata normal form. 32/1477 useless extension candidates. Maximal degree in co-relation 3132. Up to 794 conditions per place. [2024-11-19 01:49:25,590 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 45 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2024-11-19 01:49:25,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 57 transitions, 237 flow [2024-11-19 01:49:25,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:49:25,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:49:25,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-11-19 01:49:25,592 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5902777777777778 [2024-11-19 01:49:25,592 INFO L175 Difference]: Start difference. First operand has 44 places, 44 transitions, 109 flow. Second operand 3 states and 85 transitions. [2024-11-19 01:49:25,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 57 transitions, 237 flow [2024-11-19 01:49:25,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:49:25,593 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 118 flow [2024-11-19 01:49:25,594 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2024-11-19 01:49:25,594 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 0 predicate places. [2024-11-19 01:49:25,594 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 118 flow [2024-11-19 01:49:25,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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) [2024-11-19 01:49:25,594 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:25,595 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:25,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:49:25,595 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:49:25,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:25,596 INFO L85 PathProgramCache]: Analyzing trace with hash -2118938302, now seen corresponding path program 3 times [2024-11-19 01:49:25,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:25,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106863495] [2024-11-19 01:49:25,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:49:25,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:25,622 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 01:49:25,626 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:25,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:25,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:25,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106863495] [2024-11-19 01:49:25,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106863495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:49:25,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:49:25,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:49:25,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295741360] [2024-11-19 01:49:25,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:49:25,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:49:25,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:25,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:49:25,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:49:25,672 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-19 01:49:25,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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) [2024-11-19 01:49:25,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:25,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-19 01:49:25,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:25,901 INFO L124 PetriNetUnfolderBase]: 1319/2209 cut-off events. [2024-11-19 01:49:25,901 INFO L125 PetriNetUnfolderBase]: For 472/500 co-relation queries the response was YES. [2024-11-19 01:49:25,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4910 conditions, 2209 events. 1319/2209 cut-off events. For 472/500 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 12431 event pairs, 426 based on Foata normal form. 1/2109 useless extension candidates. Maximal degree in co-relation 4904. Up to 1175 conditions per place. [2024-11-19 01:49:25,912 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 48 selfloop transitions, 2 changer transitions 6/66 dead transitions. [2024-11-19 01:49:25,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 66 transitions, 286 flow [2024-11-19 01:49:25,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:49:25,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:49:25,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-11-19 01:49:25,914 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6527777777777778 [2024-11-19 01:49:25,914 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 118 flow. Second operand 3 states and 94 transitions. [2024-11-19 01:49:25,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 66 transitions, 286 flow [2024-11-19 01:49:25,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 66 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:49:25,916 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 124 flow [2024-11-19 01:49:25,917 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-11-19 01:49:25,917 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2024-11-19 01:49:25,917 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 124 flow [2024-11-19 01:49:25,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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) [2024-11-19 01:49:25,918 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:25,918 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:25,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 01:49:25,918 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:49:25,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:25,918 INFO L85 PathProgramCache]: Analyzing trace with hash 2126932116, now seen corresponding path program 1 times [2024-11-19 01:49:25,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:25,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889133815] [2024-11-19 01:49:25,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:49:25,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:25,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:49:26,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:26,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:26,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889133815] [2024-11-19 01:49:26,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889133815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:49:26,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:49:26,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:49:26,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054966559] [2024-11-19 01:49:26,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:49:26,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:49:26,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:26,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:49:26,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:49:26,007 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-19 01:49:26,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:26,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:26,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-19 01:49:26,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:26,138 INFO L124 PetriNetUnfolderBase]: 496/826 cut-off events. [2024-11-19 01:49:26,139 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2024-11-19 01:49:26,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1890 conditions, 826 events. 496/826 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3791 event pairs, 190 based on Foata normal form. 44/825 useless extension candidates. Maximal degree in co-relation 1883. Up to 546 conditions per place. [2024-11-19 01:49:26,144 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 39 selfloop transitions, 2 changer transitions 1/52 dead transitions. [2024-11-19 01:49:26,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 52 transitions, 228 flow [2024-11-19 01:49:26,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:49:26,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:49:26,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-11-19 01:49:26,147 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-19 01:49:26,147 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 124 flow. Second operand 3 states and 80 transitions. [2024-11-19 01:49:26,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 52 transitions, 228 flow [2024-11-19 01:49:26,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 52 transitions, 224 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-19 01:49:26,149 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 132 flow [2024-11-19 01:49:26,149 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2024-11-19 01:49:26,149 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2024-11-19 01:49:26,150 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 132 flow [2024-11-19 01:49:26,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:26,150 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:26,150 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:26,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 01:49:26,152 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:49:26,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:26,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1398072178, now seen corresponding path program 2 times [2024-11-19 01:49:26,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:26,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166022556] [2024-11-19 01:49:26,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:49:26,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:26,179 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:49:26,179 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:26,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:49:26,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:26,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166022556] [2024-11-19 01:49:26,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166022556] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:49:26,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:49:26,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:49:26,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714597280] [2024-11-19 01:49:26,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:49:26,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:49:26,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:26,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:49:26,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:49:26,274 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-19 01:49:26,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:26,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:26,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-19 01:49:26,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:26,438 INFO L124 PetriNetUnfolderBase]: 545/932 cut-off events. [2024-11-19 01:49:26,438 INFO L125 PetriNetUnfolderBase]: For 255/255 co-relation queries the response was YES. [2024-11-19 01:49:26,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2184 conditions, 932 events. 545/932 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4388 event pairs, 411 based on Foata normal form. 13/898 useless extension candidates. Maximal degree in co-relation 2176. Up to 745 conditions per place. [2024-11-19 01:49:26,442 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 35 selfloop transitions, 2 changer transitions 15/62 dead transitions. [2024-11-19 01:49:26,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 62 transitions, 271 flow [2024-11-19 01:49:26,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:49:26,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:49:26,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-11-19 01:49:26,443 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-11-19 01:49:26,443 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 132 flow. Second operand 5 states and 114 transitions. [2024-11-19 01:49:26,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 62 transitions, 271 flow [2024-11-19 01:49:26,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 62 transitions, 269 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:49:26,445 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 146 flow [2024-11-19 01:49:26,445 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=146, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2024-11-19 01:49:26,445 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 10 predicate places. [2024-11-19 01:49:26,445 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 146 flow [2024-11-19 01:49:26,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:26,446 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:26,446 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:26,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 01:49:26,446 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:49:26,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:26,447 INFO L85 PathProgramCache]: Analyzing trace with hash 437576286, now seen corresponding path program 1 times [2024-11-19 01:49:26,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:26,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426611024] [2024-11-19 01:49:26,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:49:26,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:26,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:49:26,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:49:26,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:26,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426611024] [2024-11-19 01:49:26,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426611024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:49:26,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:49:26,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:49:26,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834820770] [2024-11-19 01:49:26,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:49:26,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:49:26,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:26,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:49:26,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:49:26,577 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-19 01:49:26,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:26,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:26,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-19 01:49:26,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:26,709 INFO L124 PetriNetUnfolderBase]: 570/981 cut-off events. [2024-11-19 01:49:26,709 INFO L125 PetriNetUnfolderBase]: For 322/322 co-relation queries the response was YES. [2024-11-19 01:49:26,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2334 conditions, 981 events. 570/981 cut-off events. For 322/322 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4716 event pairs, 437 based on Foata normal form. 6/941 useless extension candidates. Maximal degree in co-relation 2323. Up to 746 conditions per place. [2024-11-19 01:49:26,714 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 36 selfloop transitions, 2 changer transitions 15/63 dead transitions. [2024-11-19 01:49:26,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 63 transitions, 295 flow [2024-11-19 01:49:26,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:49:26,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:49:26,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-11-19 01:49:26,716 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5260416666666666 [2024-11-19 01:49:26,716 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 146 flow. Second operand 4 states and 101 transitions. [2024-11-19 01:49:26,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 63 transitions, 295 flow [2024-11-19 01:49:26,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 63 transitions, 283 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-19 01:49:26,723 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 152 flow [2024-11-19 01:49:26,724 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-11-19 01:49:26,725 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 10 predicate places. [2024-11-19 01:49:26,725 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 152 flow [2024-11-19 01:49:26,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:26,726 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:26,726 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:26,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 01:49:26,726 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:49:26,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:26,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1816335908, now seen corresponding path program 1 times [2024-11-19 01:49:26,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:26,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133752815] [2024-11-19 01:49:26,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:49:26,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:49:26,907 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:49:26,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:26,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133752815] [2024-11-19 01:49:26,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133752815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:49:26,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:49:26,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:49:26,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129692478] [2024-11-19 01:49:26,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:49:26,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:49:26,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:26,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:49:26,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:49:26,909 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-19 01:49:26,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:26,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:26,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-19 01:49:26,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:27,057 INFO L124 PetriNetUnfolderBase]: 602/1061 cut-off events. [2024-11-19 01:49:27,058 INFO L125 PetriNetUnfolderBase]: For 303/303 co-relation queries the response was YES. [2024-11-19 01:49:27,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2486 conditions, 1061 events. 602/1061 cut-off events. For 303/303 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5196 event pairs, 462 based on Foata normal form. 6/1012 useless extension candidates. Maximal degree in co-relation 2475. Up to 747 conditions per place. [2024-11-19 01:49:27,064 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 37 selfloop transitions, 2 changer transitions 17/66 dead transitions. [2024-11-19 01:49:27,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 66 transitions, 315 flow [2024-11-19 01:49:27,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:49:27,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:49:27,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-11-19 01:49:27,067 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-11-19 01:49:27,068 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 152 flow. Second operand 4 states and 102 transitions. [2024-11-19 01:49:27,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 66 transitions, 315 flow [2024-11-19 01:49:27,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 307 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-19 01:49:27,070 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 160 flow [2024-11-19 01:49:27,070 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2024-11-19 01:49:27,071 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 12 predicate places. [2024-11-19 01:49:27,072 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 160 flow [2024-11-19 01:49:27,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:27,072 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:27,072 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:27,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 01:49:27,072 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:49:27,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:27,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1361437026, now seen corresponding path program 1 times [2024-11-19 01:49:27,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:27,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564980862] [2024-11-19 01:49:27,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:49:27,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:49:27,323 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:49:27,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:27,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564980862] [2024-11-19 01:49:27,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564980862] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:49:27,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596516774] [2024-11-19 01:49:27,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:49:27,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:49:27,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:49:27,327 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) [2024-11-19 01:49:27,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 01:49:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:49:27,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 01:49:27,447 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:49:27,624 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:49:27,625 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:49:27,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2024-11-19 01:49:27,839 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:49:27,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596516774] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:49:27,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:49:27,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-11-19 01:49:27,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087304411] [2024-11-19 01:49:27,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:49:27,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 01:49:27,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:27,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 01:49:27,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2024-11-19 01:49:27,846 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-19 01:49:27,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 160 flow. Second operand has 16 states, 16 states have (on average 18.0) internal successors, (288), 16 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:27,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:27,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-19 01:49:27,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:28,202 INFO L124 PetriNetUnfolderBase]: 772/1342 cut-off events. [2024-11-19 01:49:28,203 INFO L125 PetriNetUnfolderBase]: For 387/387 co-relation queries the response was YES. [2024-11-19 01:49:28,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3166 conditions, 1342 events. 772/1342 cut-off events. For 387/387 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6989 event pairs, 380 based on Foata normal form. 36/1307 useless extension candidates. Maximal degree in co-relation 3154. Up to 649 conditions per place. [2024-11-19 01:49:28,208 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 43 selfloop transitions, 4 changer transitions 42/99 dead transitions. [2024-11-19 01:49:28,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 99 transitions, 488 flow [2024-11-19 01:49:28,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:49:28,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:49:28,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 199 transitions. [2024-11-19 01:49:28,209 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46064814814814814 [2024-11-19 01:49:28,209 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 160 flow. Second operand 9 states and 199 transitions. [2024-11-19 01:49:28,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 99 transitions, 488 flow [2024-11-19 01:49:28,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 99 transitions, 476 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-19 01:49:28,213 INFO L231 Difference]: Finished difference. Result has 67 places, 50 transitions, 180 flow [2024-11-19 01:49:28,214 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=180, PETRI_PLACES=67, PETRI_TRANSITIONS=50} [2024-11-19 01:49:28,214 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2024-11-19 01:49:28,214 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 50 transitions, 180 flow [2024-11-19 01:49:28,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.0) internal successors, (288), 16 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:28,215 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:28,217 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:28,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 01:49:28,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:49:28,418 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:49:28,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:28,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1083772964, now seen corresponding path program 2 times [2024-11-19 01:49:28,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:28,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177705762] [2024-11-19 01:49:28,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:49:28,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:28,505 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:49:28,506 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:28,971 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:49:28,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:28,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177705762] [2024-11-19 01:49:28,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177705762] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:49:28,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528841665] [2024-11-19 01:49:28,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:49:28,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:49:28,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:49:28,973 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) [2024-11-19 01:49:28,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 01:49:29,075 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:49:29,076 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:29,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 01:49:29,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:49:29,138 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:49:29,139 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:49:29,192 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 01:49:29,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2024-11-19 01:49:29,210 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 01:49:29,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528841665] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 01:49:29,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:49:29,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 6] total 16 [2024-11-19 01:49:29,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097090917] [2024-11-19 01:49:29,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:49:29,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:49:29,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:29,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:49:29,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-19 01:49:29,219 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-11-19 01:49:29,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 50 transitions, 180 flow. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:29,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:29,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-11-19 01:49:29,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:29,431 INFO L124 PetriNetUnfolderBase]: 907/1447 cut-off events. [2024-11-19 01:49:29,431 INFO L125 PetriNetUnfolderBase]: For 682/694 co-relation queries the response was YES. [2024-11-19 01:49:29,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3580 conditions, 1447 events. 907/1447 cut-off events. For 682/694 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 7108 event pairs, 160 based on Foata normal form. 0/1367 useless extension candidates. Maximal degree in co-relation 3565. Up to 793 conditions per place. [2024-11-19 01:49:29,438 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 66 selfloop transitions, 5 changer transitions 1/80 dead transitions. [2024-11-19 01:49:29,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 80 transitions, 413 flow [2024-11-19 01:49:29,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:49:29,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:49:29,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-11-19 01:49:29,439 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-19 01:49:29,439 INFO L175 Difference]: Start difference. First operand has 67 places, 50 transitions, 180 flow. Second operand 5 states and 120 transitions. [2024-11-19 01:49:29,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 80 transitions, 413 flow [2024-11-19 01:49:29,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 80 transitions, 389 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-11-19 01:49:29,442 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 188 flow [2024-11-19 01:49:29,442 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2024-11-19 01:49:29,443 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 17 predicate places. [2024-11-19 01:49:29,443 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 188 flow [2024-11-19 01:49:29,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:29,443 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:29,443 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:29,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 01:49:29,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-19 01:49:29,644 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:49:29,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:29,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1769912796, now seen corresponding path program 1 times [2024-11-19 01:49:29,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:29,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269584749] [2024-11-19 01:49:29,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:49:29,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:29,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:49:29,845 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:49:29,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:29,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269584749] [2024-11-19 01:49:29,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269584749] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:49:29,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124348627] [2024-11-19 01:49:29,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:49:29,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:49:29,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:49:29,848 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) [2024-11-19 01:49:29,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 01:49:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:49:29,960 INFO L255 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 01:49:29,963 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:49:30,096 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:49:30,096 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:49:30,315 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 01:49:30,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124348627] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:49:30,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:49:30,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-11-19 01:49:30,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142029719] [2024-11-19 01:49:30,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:49:30,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 01:49:30,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:30,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 01:49:30,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2024-11-19 01:49:30,320 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-19 01:49:30,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 188 flow. Second operand has 18 states, 18 states have (on average 17.88888888888889) internal successors, (322), 18 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:30,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:30,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-19 01:49:30,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:30,660 INFO L124 PetriNetUnfolderBase]: 928/1594 cut-off events. [2024-11-19 01:49:30,661 INFO L125 PetriNetUnfolderBase]: For 1435/1537 co-relation queries the response was YES. [2024-11-19 01:49:30,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4227 conditions, 1594 events. 928/1594 cut-off events. For 1435/1537 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 8422 event pairs, 487 based on Foata normal form. 59/1593 useless extension candidates. Maximal degree in co-relation 4214. Up to 793 conditions per place. [2024-11-19 01:49:30,671 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 41 selfloop transitions, 5 changer transitions 38/95 dead transitions. [2024-11-19 01:49:30,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 95 transitions, 499 flow [2024-11-19 01:49:30,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:49:30,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:49:30,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 195 transitions. [2024-11-19 01:49:30,673 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4513888888888889 [2024-11-19 01:49:30,673 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 188 flow. Second operand 9 states and 195 transitions. [2024-11-19 01:49:30,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 95 transitions, 499 flow [2024-11-19 01:49:30,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 95 transitions, 492 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-19 01:49:30,675 INFO L231 Difference]: Finished difference. Result has 74 places, 53 transitions, 212 flow [2024-11-19 01:49:30,675 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=212, PETRI_PLACES=74, PETRI_TRANSITIONS=53} [2024-11-19 01:49:30,676 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2024-11-19 01:49:30,676 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 53 transitions, 212 flow [2024-11-19 01:49:30,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 17.88888888888889) internal successors, (322), 18 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:30,677 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:30,677 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:30,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 01:49:30,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:49:30,880 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:49:30,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:30,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1781446640, now seen corresponding path program 2 times [2024-11-19 01:49:30,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:30,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009137877] [2024-11-19 01:49:30,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:49:30,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:30,914 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:49:30,914 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:30,983 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 01:49:30,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:30,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009137877] [2024-11-19 01:49:30,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009137877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:49:30,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:49:30,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:49:30,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909031422] [2024-11-19 01:49:30,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:49:30,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:49:30,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:30,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:49:30,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:49:30,985 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-19 01:49:30,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 53 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:30,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:30,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-19 01:49:30,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:31,267 INFO L124 PetriNetUnfolderBase]: 1153/2065 cut-off events. [2024-11-19 01:49:31,268 INFO L125 PetriNetUnfolderBase]: For 2698/2860 co-relation queries the response was YES. [2024-11-19 01:49:31,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5649 conditions, 2065 events. 1153/2065 cut-off events. For 2698/2860 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 12909 event pairs, 335 based on Foata normal form. 57/2093 useless extension candidates. Maximal degree in co-relation 5631. Up to 600 conditions per place. [2024-11-19 01:49:31,281 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 73 selfloop transitions, 8 changer transitions 0/92 dead transitions. [2024-11-19 01:49:31,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 92 transitions, 506 flow [2024-11-19 01:49:31,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:49:31,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:49:31,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-11-19 01:49:31,282 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2024-11-19 01:49:31,282 INFO L175 Difference]: Start difference. First operand has 74 places, 53 transitions, 212 flow. Second operand 4 states and 124 transitions. [2024-11-19 01:49:31,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 92 transitions, 506 flow [2024-11-19 01:49:31,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 92 transitions, 476 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-11-19 01:49:31,287 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 255 flow [2024-11-19 01:49:31,287 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=255, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2024-11-19 01:49:31,289 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2024-11-19 01:49:31,289 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 255 flow [2024-11-19 01:49:31,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:31,289 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:31,289 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:31,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 01:49:31,290 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:49:31,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:31,290 INFO L85 PathProgramCache]: Analyzing trace with hash -841575620, now seen corresponding path program 3 times [2024-11-19 01:49:31,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:31,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772535091] [2024-11-19 01:49:31,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:49:31,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:31,356 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 01:49:31,357 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:32,568 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:49:32,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:32,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772535091] [2024-11-19 01:49:32,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772535091] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:49:32,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621182625] [2024-11-19 01:49:32,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:49:32,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:49:32,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:49:32,570 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) [2024-11-19 01:49:32,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 01:49:32,732 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 01:49:32,733 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:32,739 INFO L255 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-19 01:49:32,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:49:32,949 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:49:32,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 31 [2024-11-19 01:49:32,983 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 01:49:32,984 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:49:33,237 INFO L349 Elim1Store]: treesize reduction 4, result has 95.7 percent of original size [2024-11-19 01:49:33,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 101 [2024-11-19 01:49:33,381 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-19 01:49:33,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621182625] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 01:49:33,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:49:33,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15, 8] total 25 [2024-11-19 01:49:33,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749783958] [2024-11-19 01:49:33,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:49:33,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:49:33,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:33,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:49:33,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=545, Unknown=0, NotChecked=0, Total=600 [2024-11-19 01:49:33,418 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-11-19 01:49:33,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 255 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:33,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:33,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-11-19 01:49:33,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:34,923 INFO L124 PetriNetUnfolderBase]: 2221/3752 cut-off events. [2024-11-19 01:49:34,923 INFO L125 PetriNetUnfolderBase]: For 6355/6511 co-relation queries the response was YES. [2024-11-19 01:49:34,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10518 conditions, 3752 events. 2221/3752 cut-off events. For 6355/6511 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 22974 event pairs, 359 based on Foata normal form. 0/3596 useless extension candidates. Maximal degree in co-relation 10501. Up to 2047 conditions per place. [2024-11-19 01:49:34,949 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 78 selfloop transitions, 7 changer transitions 1/95 dead transitions. [2024-11-19 01:49:34,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 95 transitions, 567 flow [2024-11-19 01:49:34,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:49:34,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:49:34,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-11-19 01:49:34,951 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-11-19 01:49:34,951 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 255 flow. Second operand 7 states and 147 transitions. [2024-11-19 01:49:34,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 95 transitions, 567 flow [2024-11-19 01:49:34,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 95 transitions, 555 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-19 01:49:34,956 INFO L231 Difference]: Finished difference. Result has 77 places, 60 transitions, 279 flow [2024-11-19 01:49:34,956 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=279, PETRI_PLACES=77, PETRI_TRANSITIONS=60} [2024-11-19 01:49:34,957 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 31 predicate places. [2024-11-19 01:49:34,957 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 60 transitions, 279 flow [2024-11-19 01:49:34,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:34,958 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:34,958 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:34,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 01:49:35,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:49:35,159 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:49:35,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:35,160 INFO L85 PathProgramCache]: Analyzing trace with hash -18317673, now seen corresponding path program 1 times [2024-11-19 01:49:35,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:35,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81404446] [2024-11-19 01:49:35,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:49:35,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:35,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:49:35,386 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 01:49:35,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:35,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81404446] [2024-11-19 01:49:35,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81404446] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:49:35,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875430837] [2024-11-19 01:49:35,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:49:35,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:49:35,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:49:35,388 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) [2024-11-19 01:49:35,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 01:49:35,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:49:35,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 01:49:35,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:49:35,632 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 01:49:35,633 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:49:35,822 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 01:49:35,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875430837] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:49:35,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:49:35,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2024-11-19 01:49:35,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552488606] [2024-11-19 01:49:35,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:49:35,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 01:49:35,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:35,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 01:49:35,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-11-19 01:49:35,824 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-19 01:49:35,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 60 transitions, 279 flow. Second operand has 16 states, 16 states have (on average 18.875) internal successors, (302), 16 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:35,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:35,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-19 01:49:35,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:36,383 INFO L124 PetriNetUnfolderBase]: 2149/4379 cut-off events. [2024-11-19 01:49:36,383 INFO L125 PetriNetUnfolderBase]: For 8554/9052 co-relation queries the response was YES. [2024-11-19 01:49:36,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12816 conditions, 4379 events. 2149/4379 cut-off events. For 8554/9052 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 33357 event pairs, 1096 based on Foata normal form. 154/4480 useless extension candidates. Maximal degree in co-relation 12797. Up to 2047 conditions per place. [2024-11-19 01:49:36,410 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 45 selfloop transitions, 5 changer transitions 39/101 dead transitions. [2024-11-19 01:49:36,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 101 transitions, 643 flow [2024-11-19 01:49:36,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 01:49:36,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 01:49:36,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-11-19 01:49:36,412 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4661458333333333 [2024-11-19 01:49:36,412 INFO L175 Difference]: Start difference. First operand has 77 places, 60 transitions, 279 flow. Second operand 8 states and 179 transitions. [2024-11-19 01:49:36,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 101 transitions, 643 flow [2024-11-19 01:49:36,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 101 transitions, 627 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-19 01:49:36,418 INFO L231 Difference]: Finished difference. Result has 84 places, 61 transitions, 295 flow [2024-11-19 01:49:36,418 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=295, PETRI_PLACES=84, PETRI_TRANSITIONS=61} [2024-11-19 01:49:36,419 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 38 predicate places. [2024-11-19 01:49:36,419 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 61 transitions, 295 flow [2024-11-19 01:49:36,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.875) internal successors, (302), 16 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:36,419 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:36,419 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:36,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 01:49:36,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-19 01:49:36,624 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:49:36,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:36,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1190082331, now seen corresponding path program 2 times [2024-11-19 01:49:36,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:36,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307753504] [2024-11-19 01:49:36,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:49:36,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:36,659 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:49:36,659 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:36,719 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-19 01:49:36,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:36,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307753504] [2024-11-19 01:49:36,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307753504] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:49:36,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:49:36,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:49:36,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928657473] [2024-11-19 01:49:36,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:49:36,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:49:36,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:36,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:49:36,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:49:36,721 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-11-19 01:49:36,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 61 transitions, 295 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:36,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:36,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-11-19 01:49:36,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:37,404 INFO L124 PetriNetUnfolderBase]: 3124/6415 cut-off events. [2024-11-19 01:49:37,405 INFO L125 PetriNetUnfolderBase]: For 12288/12697 co-relation queries the response was YES. [2024-11-19 01:49:37,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18501 conditions, 6415 events. 3124/6415 cut-off events. For 12288/12697 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 50668 event pairs, 849 based on Foata normal form. 187/6593 useless extension candidates. Maximal degree in co-relation 18478. Up to 1755 conditions per place. [2024-11-19 01:49:37,447 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 89 selfloop transitions, 6 changer transitions 0/107 dead transitions. [2024-11-19 01:49:37,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 107 transitions, 706 flow [2024-11-19 01:49:37,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:49:37,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:49:37,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2024-11-19 01:49:37,449 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6302083333333334 [2024-11-19 01:49:37,449 INFO L175 Difference]: Start difference. First operand has 84 places, 61 transitions, 295 flow. Second operand 4 states and 121 transitions. [2024-11-19 01:49:37,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 107 transitions, 706 flow [2024-11-19 01:49:37,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 107 transitions, 678 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-11-19 01:49:37,468 INFO L231 Difference]: Finished difference. Result has 81 places, 64 transitions, 323 flow [2024-11-19 01:49:37,468 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=323, PETRI_PLACES=81, PETRI_TRANSITIONS=64} [2024-11-19 01:49:37,469 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 35 predicate places. [2024-11-19 01:49:37,469 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 64 transitions, 323 flow [2024-11-19 01:49:37,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:37,470 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:37,470 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:37,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 01:49:37,470 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:49:37,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:37,470 INFO L85 PathProgramCache]: Analyzing trace with hash 969904853, now seen corresponding path program 3 times [2024-11-19 01:49:37,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:37,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703690519] [2024-11-19 01:49:37,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:49:37,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:37,568 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 01:49:37,568 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:41,393 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:41,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:41,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703690519] [2024-11-19 01:49:41,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703690519] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:49:41,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544375555] [2024-11-19 01:49:41,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:49:41,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:49:41,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:49:41,396 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:49:41,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 01:49:41,530 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 01:49:41,530 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:41,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-19 01:49:41,542 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:49:43,615 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:43,615 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:49:45,051 INFO L349 Elim1Store]: treesize reduction 24, result has 93.0 percent of original size [2024-11-19 01:49:45,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 82 treesize of output 346 [2024-11-19 01:50:07,696 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-19 01:50:07,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544375555] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:07,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:07,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 22, 14] total 58 [2024-11-19 01:50:07,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543064783] [2024-11-19 01:50:07,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:07,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-19 01:50:07,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:07,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-19 01:50:07,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=3026, Unknown=0, NotChecked=0, Total=3306 [2024-11-19 01:50:08,539 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-11-19 01:50:08,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 64 transitions, 323 flow. Second operand has 58 states, 58 states have (on average 11.982758620689655) internal successors, (695), 58 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:08,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:08,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-11-19 01:50:08,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand