./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f 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-queue-add-2.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 8c3fe688d0e9a9929009fc24c8ef56c8fc1bfa15613131b287e178eb7d2f1f1e --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 08:28:25,418 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 08:28:25,499 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-12 08:28:25,504 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 08:28:25,505 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 08:28:25,527 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 08:28:25,528 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 08:28:25,528 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 08:28:25,529 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 08:28:25,529 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 08:28:25,529 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 08:28:25,530 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 08:28:25,530 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 08:28:25,531 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 08:28:25,531 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 08:28:25,532 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 08:28:25,532 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 08:28:25,532 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 08:28:25,533 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 08:28:25,533 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 08:28:25,535 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 08:28:25,535 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 08:28:25,539 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 08:28:25,539 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 08:28:25,539 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 08:28:25,539 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 08:28:25,540 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 08:28:25,540 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 08:28:25,540 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 08:28:25,541 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 08:28:25,541 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 08:28:25,541 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 08:28:25,541 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:28:25,541 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 08:28:25,542 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 08:28:25,548 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 08:28:25,549 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 08:28:25,549 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 08:28:25,549 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 08:28:25,549 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 08:28:25,549 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 08:28:25,551 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 08:28:25,551 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c3fe688d0e9a9929009fc24c8ef56c8fc1bfa15613131b287e178eb7d2f1f1e [2024-11-12 08:28:25,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 08:28:25,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 08:28:25,843 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 08:28:25,844 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 08:28:25,845 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 08:28:25,846 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c [2024-11-12 08:28:27,222 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 08:28:27,408 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 08:28:27,409 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c [2024-11-12 08:28:27,416 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e179d6fb2/9028b1a3ee3f4a20a080a0a9cd0dac3c/FLAG9b0fc9cb4 [2024-11-12 08:28:27,802 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e179d6fb2/9028b1a3ee3f4a20a080a0a9cd0dac3c [2024-11-12 08:28:27,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 08:28:27,807 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 08:28:27,811 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 08:28:27,811 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 08:28:27,816 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 08:28:27,817 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:28:27" (1/1) ... [2024-11-12 08:28:27,818 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52bb8a15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:27, skipping insertion in model container [2024-11-12 08:28:27,818 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:28:27" (1/1) ... [2024-11-12 08:28:27,845 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 08:28:28,031 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-queue-add-2.wvr.c[2722,2735] [2024-11-12 08:28:28,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:28:28,048 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 08:28:28,065 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-queue-add-2.wvr.c[2722,2735] [2024-11-12 08:28:28,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:28:28,086 INFO L204 MainTranslator]: Completed translation [2024-11-12 08:28:28,087 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:28 WrapperNode [2024-11-12 08:28:28,087 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 08:28:28,088 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 08:28:28,088 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 08:28:28,088 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 08:28:28,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:28" (1/1) ... [2024-11-12 08:28:28,103 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:28" (1/1) ... [2024-11-12 08:28:28,132 INFO L138 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 149 [2024-11-12 08:28:28,133 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 08:28:28,134 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 08:28:28,134 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 08:28:28,134 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 08:28:28,145 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:28" (1/1) ... [2024-11-12 08:28:28,145 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:28" (1/1) ... [2024-11-12 08:28:28,148 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:28" (1/1) ... [2024-11-12 08:28:28,165 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-12 08:28:28,165 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:28" (1/1) ... [2024-11-12 08:28:28,165 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:28" (1/1) ... [2024-11-12 08:28:28,170 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:28" (1/1) ... [2024-11-12 08:28:28,176 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:28" (1/1) ... [2024-11-12 08:28:28,177 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:28" (1/1) ... [2024-11-12 08:28:28,179 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:28" (1/1) ... [2024-11-12 08:28:28,182 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 08:28:28,183 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 08:28:28,183 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 08:28:28,183 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 08:28:28,184 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:28" (1/1) ... [2024-11-12 08:28:28,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:28:28,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:28:28,213 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) [2024-11-12 08:28:28,217 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 [2024-11-12 08:28:28,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 08:28:28,252 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 08:28:28,252 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 08:28:28,252 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 08:28:28,252 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 08:28:28,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 08:28:28,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 08:28:28,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 08:28:28,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 08:28:28,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-12 08:28:28,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-12 08:28:28,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 08:28:28,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 08:28:28,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 08:28:28,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 08:28:28,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 08:28:28,255 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 08:28:28,340 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 08:28:28,342 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 08:28:28,660 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 08:28:28,661 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 08:28:28,862 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 08:28:28,863 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-12 08:28:28,863 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:28:28 BoogieIcfgContainer [2024-11-12 08:28:28,863 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 08:28:28,865 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 08:28:28,865 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 08:28:28,868 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 08:28:28,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:28:27" (1/3) ... [2024-11-12 08:28:28,869 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f85a3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:28:28, skipping insertion in model container [2024-11-12 08:28:28,869 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:28:28" (2/3) ... [2024-11-12 08:28:28,870 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f85a3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:28:28, skipping insertion in model container [2024-11-12 08:28:28,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:28:28" (3/3) ... [2024-11-12 08:28:28,871 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-2.wvr.c [2024-11-12 08:28:28,888 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 08:28:28,888 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-12 08:28:28,888 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 08:28:28,935 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-12 08:28:28,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 72 flow [2024-11-12 08:28:29,020 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-11-12 08:28:29,022 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 08:28:29,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 27 events. 4/27 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 20. Up to 2 conditions per place. [2024-11-12 08:28:29,043 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 72 flow [2024-11-12 08:28:29,047 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 64 flow [2024-11-12 08:28:29,060 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 08:28:29,068 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;@10633615, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 08:28:29,069 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-12 08:28:29,080 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 08:28:29,084 INFO L124 PetriNetUnfolderBase]: 4/25 cut-off events. [2024-11-12 08:28:29,084 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 08:28:29,085 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:28:29,087 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:28:29,087 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:28:29,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:28:29,095 INFO L85 PathProgramCache]: Analyzing trace with hash 898408006, now seen corresponding path program 1 times [2024-11-12 08:28:29,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:28:29,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598723766] [2024-11-12 08:28:29,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:28:29,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:28:29,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:28:29,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:28:29,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:28:29,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598723766] [2024-11-12 08:28:29,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598723766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:28:29,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:28:29,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 08:28:29,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064941693] [2024-11-12 08:28:29,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:28:29,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-12 08:28:29,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:28:29,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-12 08:28:29,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-12 08:28:29,373 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-12 08:28:29,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 64 flow. Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 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) [2024-11-12 08:28:29,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:28:29,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-12 08:28:29,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:28:29,483 INFO L124 PetriNetUnfolderBase]: 87/187 cut-off events. [2024-11-12 08:28:29,484 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-12 08:28:29,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 187 events. 87/187 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 646 event pairs, 66 based on Foata normal form. 13/183 useless extension candidates. Maximal degree in co-relation 317. Up to 146 conditions per place. [2024-11-12 08:28:29,492 INFO L140 encePairwiseOnDemand]: 28/29 looper letters, 19 selfloop transitions, 0 changer transitions 0/25 dead transitions. [2024-11-12 08:28:29,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 25 transitions, 100 flow [2024-11-12 08:28:29,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-12 08:28:29,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-12 08:28:29,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 36 transitions. [2024-11-12 08:28:29,505 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6206896551724138 [2024-11-12 08:28:29,507 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 64 flow. Second operand 2 states and 36 transitions. [2024-11-12 08:28:29,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 25 transitions, 100 flow [2024-11-12 08:28:29,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 25 transitions, 92 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-12 08:28:29,512 INFO L231 Difference]: Finished difference. Result has 26 places, 25 transitions, 54 flow [2024-11-12 08:28:29,515 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=54, PETRI_PLACES=26, PETRI_TRANSITIONS=25} [2024-11-12 08:28:29,523 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, -3 predicate places. [2024-11-12 08:28:29,523 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 25 transitions, 54 flow [2024-11-12 08:28:29,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 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) [2024-11-12 08:28:29,524 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:28:29,524 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:28:29,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 08:28:29,524 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:28:29,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:28:29,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1095861289, now seen corresponding path program 1 times [2024-11-12 08:28:29,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:28:29,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849381790] [2024-11-12 08:28:29,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:28:29,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:28:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:28:29,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:28:29,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:28:29,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849381790] [2024-11-12 08:28:29,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849381790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:28:29,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:28:29,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 08:28:29,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347313516] [2024-11-12 08:28:29,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:28:29,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 08:28:29,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:28:29,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 08:28:29,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 08:28:29,842 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-12 08:28:29,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 54 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2024-11-12 08:28:29,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:28:29,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-12 08:28:29,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:28:29,962 INFO L124 PetriNetUnfolderBase]: 100/227 cut-off events. [2024-11-12 08:28:29,963 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 08:28:29,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 419 conditions, 227 events. 100/227 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 832 event pairs, 79 based on Foata normal form. 17/228 useless extension candidates. Maximal degree in co-relation 416. Up to 146 conditions per place. [2024-11-12 08:28:29,966 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 18 selfloop transitions, 2 changer transitions 8/34 dead transitions. [2024-11-12 08:28:29,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 34 transitions, 130 flow [2024-11-12 08:28:29,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 08:28:29,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 08:28:29,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2024-11-12 08:28:29,968 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5431034482758621 [2024-11-12 08:28:29,968 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 54 flow. Second operand 4 states and 63 transitions. [2024-11-12 08:28:29,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 34 transitions, 130 flow [2024-11-12 08:28:29,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 34 transitions, 130 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 08:28:29,971 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 72 flow [2024-11-12 08:28:29,971 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2024-11-12 08:28:29,972 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2024-11-12 08:28:29,972 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 72 flow [2024-11-12 08:28:29,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2024-11-12 08:28:29,972 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:28:29,973 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:28:29,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 08:28:29,973 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:28:29,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:28:29,974 INFO L85 PathProgramCache]: Analyzing trace with hash -798163703, now seen corresponding path program 1 times [2024-11-12 08:28:29,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:28:29,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248413104] [2024-11-12 08:28:29,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:28:29,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:28:29,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:28:30,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 08:28:30,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:28:30,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248413104] [2024-11-12 08:28:30,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248413104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:28:30,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:28:30,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 08:28:30,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302901839] [2024-11-12 08:28:30,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:28:30,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 08:28:30,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:28:30,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 08:28:30,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-12 08:28:30,251 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-12 08:28:30,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 72 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:28:30,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:28:30,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-12 08:28:30,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:28:30,514 INFO L124 PetriNetUnfolderBase]: 229/444 cut-off events. [2024-11-12 08:28:30,514 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2024-11-12 08:28:30,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 967 conditions, 444 events. 229/444 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1986 event pairs, 54 based on Foata normal form. 1/441 useless extension candidates. Maximal degree in co-relation 961. Up to 155 conditions per place. [2024-11-12 08:28:30,521 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 46 selfloop transitions, 9 changer transitions 7/66 dead transitions. [2024-11-12 08:28:30,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 66 transitions, 303 flow [2024-11-12 08:28:30,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 08:28:30,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 08:28:30,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-11-12 08:28:30,525 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47413793103448276 [2024-11-12 08:28:30,525 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 72 flow. Second operand 8 states and 110 transitions. [2024-11-12 08:28:30,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 66 transitions, 303 flow [2024-11-12 08:28:30,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 66 transitions, 299 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-12 08:28:30,529 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 126 flow [2024-11-12 08:28:30,531 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=126, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2024-11-12 08:28:30,531 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 11 predicate places. [2024-11-12 08:28:30,532 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 126 flow [2024-11-12 08:28:30,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:28:30,532 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:28:30,532 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:28:30,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 08:28:30,532 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:28:30,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:28:30,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1929446763, now seen corresponding path program 2 times [2024-11-12 08:28:30,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:28:30,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813767698] [2024-11-12 08:28:30,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:28:30,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:28:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:28:30,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 08:28:30,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:28:30,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813767698] [2024-11-12 08:28:30,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813767698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:28:30,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:28:30,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 08:28:30,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285519851] [2024-11-12 08:28:30,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:28:30,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:28:30,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:28:30,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:28:30,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:28:30,627 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-12 08:28:30,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-12 08:28:30,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:28:30,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-12 08:28:30,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:28:30,707 INFO L124 PetriNetUnfolderBase]: 145/326 cut-off events. [2024-11-12 08:28:30,707 INFO L125 PetriNetUnfolderBase]: For 182/186 co-relation queries the response was YES. [2024-11-12 08:28:30,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 825 conditions, 326 events. 145/326 cut-off events. For 182/186 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1327 event pairs, 39 based on Foata normal form. 6/328 useless extension candidates. Maximal degree in co-relation 815. Up to 214 conditions per place. [2024-11-12 08:28:30,712 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 26 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2024-11-12 08:28:30,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 38 transitions, 197 flow [2024-11-12 08:28:30,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:28:30,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:28:30,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2024-11-12 08:28:30,715 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2024-11-12 08:28:30,715 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 126 flow. Second operand 3 states and 51 transitions. [2024-11-12 08:28:30,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 38 transitions, 197 flow [2024-11-12 08:28:30,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 38 transitions, 187 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-12 08:28:30,718 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 135 flow [2024-11-12 08:28:30,719 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2024-11-12 08:28:30,721 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2024-11-12 08:28:30,721 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 135 flow [2024-11-12 08:28:30,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-12 08:28:30,721 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:28:30,722 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:28:30,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 08:28:30,722 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:28:30,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:28:30,724 INFO L85 PathProgramCache]: Analyzing trace with hash -126642015, now seen corresponding path program 1 times [2024-11-12 08:28:30,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:28:30,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507216212] [2024-11-12 08:28:30,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:28:30,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:28:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:28:30,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:28:30,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:28:30,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507216212] [2024-11-12 08:28:30,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507216212] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:28:30,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85526320] [2024-11-12 08:28:30,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:28:30,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:28:30,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:28:30,893 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) [2024-11-12 08:28:30,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 08:28:30,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:28:30,982 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-12 08:28:30,988 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:28:31,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:28:31,097 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:28:31,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:28:31,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85526320] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:28:31,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:28:31,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-12 08:28:31,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362303329] [2024-11-12 08:28:31,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:28:31,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-12 08:28:31,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:28:31,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-12 08:28:31,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-12 08:28:31,210 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-12 08:28:31,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 135 flow. Second operand has 12 states, 12 states have (on average 10.75) internal successors, (129), 12 states have internal predecessors, (129), 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) [2024-11-12 08:28:31,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:28:31,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-12 08:28:31,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:28:31,363 INFO L124 PetriNetUnfolderBase]: 244/562 cut-off events. [2024-11-12 08:28:31,364 INFO L125 PetriNetUnfolderBase]: For 558/597 co-relation queries the response was YES. [2024-11-12 08:28:31,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1515 conditions, 562 events. 244/562 cut-off events. For 558/597 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2830 event pairs, 137 based on Foata normal form. 26/560 useless extension candidates. Maximal degree in co-relation 1505. Up to 262 conditions per place. [2024-11-12 08:28:31,368 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 41 selfloop transitions, 5 changer transitions 4/59 dead transitions. [2024-11-12 08:28:31,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 59 transitions, 327 flow [2024-11-12 08:28:31,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 08:28:31,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 08:28:31,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 93 transitions. [2024-11-12 08:28:31,379 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2024-11-12 08:28:31,380 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 135 flow. Second operand 6 states and 93 transitions. [2024-11-12 08:28:31,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 59 transitions, 327 flow [2024-11-12 08:28:31,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 59 transitions, 306 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-12 08:28:31,383 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 163 flow [2024-11-12 08:28:31,384 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=163, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2024-11-12 08:28:31,384 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2024-11-12 08:28:31,385 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 163 flow [2024-11-12 08:28:31,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.75) internal successors, (129), 12 states have internal predecessors, (129), 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) [2024-11-12 08:28:31,385 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:28:31,385 INFO L206 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] [2024-11-12 08:28:31,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-12 08:28:31,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:28:31,587 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:28:31,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:28:31,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1356069503, now seen corresponding path program 2 times [2024-11-12 08:28:31,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:28:31,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172371255] [2024-11-12 08:28:31,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:28:31,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:28:31,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:28:32,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:28:32,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:28:32,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172371255] [2024-11-12 08:28:32,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172371255] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:28:32,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282068650] [2024-11-12 08:28:32,185 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 08:28:32,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:28:32,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:28:32,187 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) [2024-11-12 08:28:32,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 08:28:32,287 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-12 08:28:32,287 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:28:32,289 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-12 08:28:32,290 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:28:32,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 08:28:32,369 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 08:28:32,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282068650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:28:32,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 08:28:32,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2024-11-12 08:28:32,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200601789] [2024-11-12 08:28:32,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:28:32,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:28:32,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:28:32,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:28:32,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-12 08:28:32,381 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-12 08:28:32,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 163 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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) [2024-11-12 08:28:32,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:28:32,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-12 08:28:32,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:28:32,518 INFO L124 PetriNetUnfolderBase]: 213/516 cut-off events. [2024-11-12 08:28:32,518 INFO L125 PetriNetUnfolderBase]: For 361/363 co-relation queries the response was YES. [2024-11-12 08:28:32,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1308 conditions, 516 events. 213/516 cut-off events. For 361/363 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2449 event pairs, 50 based on Foata normal form. 13/521 useless extension candidates. Maximal degree in co-relation 1296. Up to 211 conditions per place. [2024-11-12 08:28:32,524 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 47 selfloop transitions, 6 changer transitions 0/61 dead transitions. [2024-11-12 08:28:32,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 61 transitions, 356 flow [2024-11-12 08:28:32,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 08:28:32,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 08:28:32,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 82 transitions. [2024-11-12 08:28:32,527 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5655172413793104 [2024-11-12 08:28:32,527 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 163 flow. Second operand 5 states and 82 transitions. [2024-11-12 08:28:32,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 61 transitions, 356 flow [2024-11-12 08:28:32,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 61 transitions, 333 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-11-12 08:28:32,530 INFO L231 Difference]: Finished difference. Result has 47 places, 39 transitions, 178 flow [2024-11-12 08:28:32,530 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2024-11-12 08:28:32,531 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 18 predicate places. [2024-11-12 08:28:32,531 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 178 flow [2024-11-12 08:28:32,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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) [2024-11-12 08:28:32,532 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:28:32,532 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:28:32,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 08:28:32,736 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,SelfDestructingSolverStorable5 [2024-11-12 08:28:32,737 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:28:32,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:28:32,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1168037557, now seen corresponding path program 1 times [2024-11-12 08:28:32,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:28:32,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904749412] [2024-11-12 08:28:32,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:28:32,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:28:32,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:28:32,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:28:32,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:28:32,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904749412] [2024-11-12 08:28:32,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904749412] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:28:32,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986607355] [2024-11-12 08:28:32,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:28:32,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:28:32,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:28:32,856 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) [2024-11-12 08:28:32,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 08:28:32,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:28:32,929 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 08:28:32,931 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:28:32,967 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 08:28:32,968 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 08:28:32,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986607355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:28:32,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 08:28:32,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-12 08:28:32,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176147126] [2024-11-12 08:28:32,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:28:32,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 08:28:32,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:28:32,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 08:28:32,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-12 08:28:32,970 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-12 08:28:32,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 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) [2024-11-12 08:28:32,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:28:32,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-12 08:28:32,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:28:33,089 INFO L124 PetriNetUnfolderBase]: 265/687 cut-off events. [2024-11-12 08:28:33,090 INFO L125 PetriNetUnfolderBase]: For 808/842 co-relation queries the response was YES. [2024-11-12 08:28:33,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1771 conditions, 687 events. 265/687 cut-off events. For 808/842 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3674 event pairs, 66 based on Foata normal form. 29/699 useless extension candidates. Maximal degree in co-relation 1759. Up to 182 conditions per place. [2024-11-12 08:28:33,095 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 46 selfloop transitions, 9 changer transitions 5/68 dead transitions. [2024-11-12 08:28:33,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 68 transitions, 396 flow [2024-11-12 08:28:33,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 08:28:33,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 08:28:33,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-11-12 08:28:33,098 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6810344827586207 [2024-11-12 08:28:33,099 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 178 flow. Second operand 4 states and 79 transitions. [2024-11-12 08:28:33,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 68 transitions, 396 flow [2024-11-12 08:28:33,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 68 transitions, 384 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-12 08:28:33,105 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 218 flow [2024-11-12 08:28:33,105 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2024-11-12 08:28:33,105 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2024-11-12 08:28:33,107 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 218 flow [2024-11-12 08:28:33,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 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) [2024-11-12 08:28:33,108 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:28:33,108 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2024-11-12 08:28:33,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-12 08:28:33,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:28:33,309 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:28:33,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:28:33,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1628949323, now seen corresponding path program 1 times [2024-11-12 08:28:33,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:28:33,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904854872] [2024-11-12 08:28:33,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:28:33,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:28:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:28:34,137 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:28:34,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:28:34,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904854872] [2024-11-12 08:28:34,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904854872] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:28:34,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623461185] [2024-11-12 08:28:34,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:28:34,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:28:34,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:28:34,142 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) [2024-11-12 08:28:34,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 08:28:34,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:28:34,216 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-12 08:28:34,218 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:28:34,638 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 3 [2024-11-12 08:28:34,819 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:28:34,819 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:28:35,158 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 08:28:35,159 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 26 treesize of output 18 [2024-11-12 08:28:35,586 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:28:35,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623461185] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:28:35,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:28:35,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 41 [2024-11-12 08:28:35,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283896020] [2024-11-12 08:28:35,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:28:35,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-12 08:28:35,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:28:35,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-12 08:28:35,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1480, Unknown=0, NotChecked=0, Total=1722 [2024-11-12 08:28:35,618 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-12 08:28:35,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 218 flow. Second operand has 42 states, 42 states have (on average 5.785714285714286) internal successors, (243), 42 states have internal predecessors, (243), 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) [2024-11-12 08:28:35,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:28:35,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-12 08:28:35,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:28:39,732 INFO L124 PetriNetUnfolderBase]: 1246/2310 cut-off events. [2024-11-12 08:28:39,732 INFO L125 PetriNetUnfolderBase]: For 2979/2979 co-relation queries the response was YES. [2024-11-12 08:28:39,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6791 conditions, 2310 events. 1246/2310 cut-off events. For 2979/2979 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 12876 event pairs, 92 based on Foata normal form. 3/2310 useless extension candidates. Maximal degree in co-relation 6776. Up to 693 conditions per place. [2024-11-12 08:28:39,750 INFO L140 encePairwiseOnDemand]: 15/29 looper letters, 197 selfloop transitions, 120 changer transitions 49/368 dead transitions. [2024-11-12 08:28:39,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 368 transitions, 2272 flow [2024-11-12 08:28:39,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-12 08:28:39,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2024-11-12 08:28:39,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 581 transitions. [2024-11-12 08:28:39,756 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3339080459770115 [2024-11-12 08:28:39,756 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 218 flow. Second operand 60 states and 581 transitions. [2024-11-12 08:28:39,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 368 transitions, 2272 flow [2024-11-12 08:28:39,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 368 transitions, 2196 flow, removed 38 selfloop flow, removed 2 redundant places. [2024-11-12 08:28:39,772 INFO L231 Difference]: Finished difference. Result has 130 places, 163 transitions, 1407 flow [2024-11-12 08:28:39,772 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=1407, PETRI_PLACES=130, PETRI_TRANSITIONS=163} [2024-11-12 08:28:39,773 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 101 predicate places. [2024-11-12 08:28:39,773 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 163 transitions, 1407 flow [2024-11-12 08:28:39,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 5.785714285714286) internal successors, (243), 42 states have internal predecessors, (243), 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) [2024-11-12 08:28:39,774 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:28:39,774 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2024-11-12 08:28:39,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-12 08:28:39,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:28:39,978 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:28:39,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:28:39,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1105431893, now seen corresponding path program 2 times [2024-11-12 08:28:39,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:28:39,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270334901] [2024-11-12 08:28:39,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:28:39,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:28:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:28:40,706 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:28:40,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:28:40,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270334901] [2024-11-12 08:28:40,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270334901] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:28:40,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072859574] [2024-11-12 08:28:40,707 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 08:28:40,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:28:40,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:28:40,709 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) [2024-11-12 08:28:40,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 08:28:40,781 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:28:40,781 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:28:40,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-12 08:28:40,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:28:41,376 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:28:41,376 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:28:41,673 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 08:28:41,673 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 26 treesize of output 18 [2024-11-12 08:28:42,033 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:28:42,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072859574] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:28:42,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:28:42,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 41 [2024-11-12 08:28:42,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888817320] [2024-11-12 08:28:42,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:28:42,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-12 08:28:42,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:28:42,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-12 08:28:42,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1524, Unknown=0, NotChecked=0, Total=1722 [2024-11-12 08:28:42,049 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-12 08:28:42,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 163 transitions, 1407 flow. Second operand has 42 states, 42 states have (on average 5.785714285714286) internal successors, (243), 42 states have internal predecessors, (243), 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) [2024-11-12 08:28:42,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:28:42,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-12 08:28:42,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:28:46,423 INFO L124 PetriNetUnfolderBase]: 1601/2925 cut-off events. [2024-11-12 08:28:46,423 INFO L125 PetriNetUnfolderBase]: For 14131/14131 co-relation queries the response was YES. [2024-11-12 08:28:46,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12895 conditions, 2925 events. 1601/2925 cut-off events. For 14131/14131 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 17003 event pairs, 129 based on Foata normal form. 2/2924 useless extension candidates. Maximal degree in co-relation 12856. Up to 956 conditions per place. [2024-11-12 08:28:46,452 INFO L140 encePairwiseOnDemand]: 15/29 looper letters, 270 selfloop transitions, 192 changer transitions 22/486 dead transitions. [2024-11-12 08:28:46,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 486 transitions, 4433 flow [2024-11-12 08:28:46,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-12 08:28:46,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2024-11-12 08:28:46,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 629 transitions. [2024-11-12 08:28:46,456 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3336870026525199 [2024-11-12 08:28:46,456 INFO L175 Difference]: Start difference. First operand has 130 places, 163 transitions, 1407 flow. Second operand 65 states and 629 transitions. [2024-11-12 08:28:46,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 486 transitions, 4433 flow [2024-11-12 08:28:46,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 486 transitions, 4023 flow, removed 198 selfloop flow, removed 9 redundant places. [2024-11-12 08:28:46,507 INFO L231 Difference]: Finished difference. Result has 192 places, 272 transitions, 2870 flow [2024-11-12 08:28:46,508 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1153, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=2870, PETRI_PLACES=192, PETRI_TRANSITIONS=272} [2024-11-12 08:28:46,510 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 163 predicate places. [2024-11-12 08:28:46,510 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 272 transitions, 2870 flow [2024-11-12 08:28:46,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 5.785714285714286) internal successors, (243), 42 states have internal predecessors, (243), 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) [2024-11-12 08:28:46,510 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:28:46,511 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2024-11-12 08:28:46,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-12 08:28:46,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:28:46,715 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:28:46,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:28:46,716 INFO L85 PathProgramCache]: Analyzing trace with hash 812871469, now seen corresponding path program 3 times [2024-11-12 08:28:46,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:28:46,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640098271] [2024-11-12 08:28:46,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:28:46,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:28:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:28:47,468 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:28:47,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:28:47,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640098271] [2024-11-12 08:28:47,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640098271] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:28:47,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758958955] [2024-11-12 08:28:47,470 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 08:28:47,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:28:47,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:28:47,472 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) [2024-11-12 08:28:47,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 08:28:47,555 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 08:28:47,555 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:28:47,557 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-12 08:28:47,559 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:28:47,817 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 3 [2024-11-12 08:28:47,969 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:28:47,969 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:28:48,246 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 08:28:48,247 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 26 treesize of output 18 [2024-11-12 08:28:48,599 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:28:48,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758958955] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:28:48,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:28:48,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 41 [2024-11-12 08:28:48,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682745285] [2024-11-12 08:28:48,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:28:48,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-12 08:28:48,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:28:48,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-12 08:28:48,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1494, Unknown=0, NotChecked=0, Total=1722 [2024-11-12 08:28:48,620 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-12 08:28:48,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 272 transitions, 2870 flow. Second operand has 42 states, 42 states have (on average 5.738095238095238) internal successors, (241), 42 states have internal predecessors, (241), 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) [2024-11-12 08:28:48,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:28:48,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-12 08:28:48,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:28:57,672 INFO L124 PetriNetUnfolderBase]: 4338/7974 cut-off events. [2024-11-12 08:28:57,672 INFO L125 PetriNetUnfolderBase]: For 60033/60033 co-relation queries the response was YES. [2024-11-12 08:28:57,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39983 conditions, 7974 events. 4338/7974 cut-off events. For 60033/60033 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 57379 event pairs, 126 based on Foata normal form. 16/7989 useless extension candidates. Maximal degree in co-relation 39934. Up to 1644 conditions per place. [2024-11-12 08:28:57,740 INFO L140 encePairwiseOnDemand]: 13/29 looper letters, 427 selfloop transitions, 690 changer transitions 133/1252 dead transitions. [2024-11-12 08:28:57,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 1252 transitions, 14136 flow [2024-11-12 08:28:57,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2024-11-12 08:28:57,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2024-11-12 08:28:57,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 1257 transitions. [2024-11-12 08:28:57,745 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3412978550095031 [2024-11-12 08:28:57,746 INFO L175 Difference]: Start difference. First operand has 192 places, 272 transitions, 2870 flow. Second operand 127 states and 1257 transitions. [2024-11-12 08:28:57,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 1252 transitions, 14136 flow [2024-11-12 08:28:58,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 1252 transitions, 12716 flow, removed 645 selfloop flow, removed 33 redundant places. [2024-11-12 08:28:58,256 INFO L231 Difference]: Finished difference. Result has 330 places, 821 transitions, 10351 flow [2024-11-12 08:28:58,257 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2312, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=127, PETRI_FLOW=10351, PETRI_PLACES=330, PETRI_TRANSITIONS=821} [2024-11-12 08:28:58,258 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 301 predicate places. [2024-11-12 08:28:58,258 INFO L471 AbstractCegarLoop]: Abstraction has has 330 places, 821 transitions, 10351 flow [2024-11-12 08:28:58,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 5.738095238095238) internal successors, (241), 42 states have internal predecessors, (241), 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) [2024-11-12 08:28:58,258 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:28:58,258 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2024-11-12 08:28:58,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-12 08:28:58,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:28:58,459 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:28:58,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:28:58,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1222013193, now seen corresponding path program 4 times [2024-11-12 08:28:58,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:28:58,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929817072] [2024-11-12 08:28:58,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:28:58,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:28:58,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:28:59,081 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:28:59,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:28:59,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929817072] [2024-11-12 08:28:59,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929817072] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:28:59,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942819761] [2024-11-12 08:28:59,082 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 08:28:59,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:28:59,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:28:59,083 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:28:59,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 08:28:59,146 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 08:28:59,146 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:28:59,147 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-12 08:28:59,148 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:28:59,484 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 11 treesize of output 3 [2024-11-12 08:28:59,669 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:28:59,669 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:28:59,928 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 08:28:59,929 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 37 treesize of output 21 [2024-11-12 08:29:00,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:29:00,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942819761] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:29:00,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:29:00,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 42 [2024-11-12 08:29:00,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969584252] [2024-11-12 08:29:00,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:29:00,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-12 08:29:00,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:00,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-12 08:29:00,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1593, Unknown=0, NotChecked=0, Total=1806 [2024-11-12 08:29:00,240 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-12 08:29:00,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 821 transitions, 10351 flow. Second operand has 43 states, 43 states have (on average 5.744186046511628) internal successors, (247), 43 states have internal predecessors, (247), 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) [2024-11-12 08:29:00,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:00,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-12 08:29:00,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:10,078 INFO L124 PetriNetUnfolderBase]: 9308/17331 cut-off events. [2024-11-12 08:29:10,078 INFO L125 PetriNetUnfolderBase]: For 263271/263271 co-relation queries the response was YES. [2024-11-12 08:29:10,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102625 conditions, 17331 events. 9308/17331 cut-off events. For 263271/263271 co-relation queries the response was YES. Maximal size of possible extension queue 795. Compared 142702 event pairs, 172 based on Foata normal form. 17/17337 useless extension candidates. Maximal degree in co-relation 102537. Up to 4140 conditions per place. [2024-11-12 08:29:10,250 INFO L140 encePairwiseOnDemand]: 13/29 looper letters, 787 selfloop transitions, 1755 changer transitions 135/2679 dead transitions. [2024-11-12 08:29:10,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 2679 transitions, 38504 flow [2024-11-12 08:29:10,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-11-12 08:29:10,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2024-11-12 08:29:10,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 1052 transitions. [2024-11-12 08:29:10,256 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3627586206896552 [2024-11-12 08:29:10,257 INFO L175 Difference]: Start difference. First operand has 330 places, 821 transitions, 10351 flow. Second operand 100 states and 1052 transitions. [2024-11-12 08:29:10,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 2679 transitions, 38504 flow [2024-11-12 08:29:14,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 2679 transitions, 34484 flow, removed 1943 selfloop flow, removed 35 redundant places. [2024-11-12 08:29:14,787 INFO L231 Difference]: Finished difference. Result has 431 places, 2174 transitions, 32252 flow [2024-11-12 08:29:14,787 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=9061, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=821, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=604, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=100, PETRI_FLOW=32252, PETRI_PLACES=431, PETRI_TRANSITIONS=2174} [2024-11-12 08:29:14,788 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 402 predicate places. [2024-11-12 08:29:14,788 INFO L471 AbstractCegarLoop]: Abstraction has has 431 places, 2174 transitions, 32252 flow [2024-11-12 08:29:14,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 5.744186046511628) internal successors, (247), 43 states have internal predecessors, (247), 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) [2024-11-12 08:29:14,788 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:14,788 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2024-11-12 08:29:14,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-12 08:29:14,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:29:14,989 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:29:14,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:14,990 INFO L85 PathProgramCache]: Analyzing trace with hash 417538143, now seen corresponding path program 5 times [2024-11-12 08:29:14,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:14,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177244460] [2024-11-12 08:29:14,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:14,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:15,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:29:15,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:15,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177244460] [2024-11-12 08:29:15,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177244460] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:29:15,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609178086] [2024-11-12 08:29:15,657 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 08:29:15,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:29:15,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:29:15,659 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:29:15,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-12 08:29:15,739 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:29:15,739 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:29:15,741 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-12 08:29:15,743 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:29:15,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-12 08:29:16,033 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 3 [2024-11-12 08:29:16,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:29:16,231 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:29:16,750 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 40 treesize of output 36 [2024-11-12 08:29:16,760 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 08:29:16,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 50 treesize of output 46 [2024-11-12 08:29:16,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:29:16,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609178086] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:29:16,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:29:16,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 41 [2024-11-12 08:29:16,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702170508] [2024-11-12 08:29:16,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:29:16,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-12 08:29:16,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:16,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-12 08:29:16,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1510, Unknown=0, NotChecked=0, Total=1722 [2024-11-12 08:29:16,957 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-12 08:29:16,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 2174 transitions, 32252 flow. Second operand has 42 states, 42 states have (on average 5.785714285714286) internal successors, (243), 42 states have internal predecessors, (243), 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) [2024-11-12 08:29:16,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:16,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-12 08:29:16,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:29:31,045 INFO L124 PetriNetUnfolderBase]: 10892/20322 cut-off events. [2024-11-12 08:29:31,046 INFO L125 PetriNetUnfolderBase]: For 328406/328406 co-relation queries the response was YES. [2024-11-12 08:29:31,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133318 conditions, 20322 events. 10892/20322 cut-off events. For 328406/328406 co-relation queries the response was YES. Maximal size of possible extension queue 943. Compared 172209 event pairs, 716 based on Foata normal form. 11/20328 useless extension candidates. Maximal degree in co-relation 133196. Up to 8570 conditions per place. [2024-11-12 08:29:31,320 INFO L140 encePairwiseOnDemand]: 15/29 looper letters, 1372 selfloop transitions, 1548 changer transitions 175/3097 dead transitions. [2024-11-12 08:29:31,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 3097 transitions, 51384 flow [2024-11-12 08:29:31,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2024-11-12 08:29:31,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2024-11-12 08:29:31,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 956 transitions. [2024-11-12 08:29:31,324 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3263912598156367 [2024-11-12 08:29:31,324 INFO L175 Difference]: Start difference. First operand has 431 places, 2174 transitions, 32252 flow. Second operand 101 states and 956 transitions. [2024-11-12 08:29:31,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 3097 transitions, 51384 flow [2024-11-12 08:29:39,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 3097 transitions, 49269 flow, removed 962 selfloop flow, removed 28 redundant places. [2024-11-12 08:29:39,528 INFO L231 Difference]: Finished difference. Result has 538 places, 2595 transitions, 43663 flow [2024-11-12 08:29:39,530 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=30765, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=890, PETRI_DIFFERENCE_SUBTRAHEND_STATES=101, PETRI_FLOW=43663, PETRI_PLACES=538, PETRI_TRANSITIONS=2595} [2024-11-12 08:29:39,530 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 509 predicate places. [2024-11-12 08:29:39,530 INFO L471 AbstractCegarLoop]: Abstraction has has 538 places, 2595 transitions, 43663 flow [2024-11-12 08:29:39,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 5.785714285714286) internal successors, (243), 42 states have internal predecessors, (243), 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) [2024-11-12 08:29:39,531 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:29:39,531 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:29:39,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-12 08:29:39,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-12 08:29:39,732 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:29:39,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:29:39,733 INFO L85 PathProgramCache]: Analyzing trace with hash -924770825, now seen corresponding path program 6 times [2024-11-12 08:29:39,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:29:39,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146036929] [2024-11-12 08:29:39,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:29:39,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:29:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:29:40,637 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:29:40,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:29:40,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146036929] [2024-11-12 08:29:40,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146036929] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:29:40,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951471709] [2024-11-12 08:29:40,638 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-12 08:29:40,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:29:40,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:29:40,640 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:29:40,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-12 08:29:40,724 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-12 08:29:40,724 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:29:40,726 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-12 08:29:40,728 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:29:41,051 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 08:29:41,051 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:29:41,219 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 08:29:41,220 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 37 treesize of output 21 [2024-11-12 08:29:41,292 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-12 08:29:41,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951471709] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:29:41,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:29:41,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 11] total 36 [2024-11-12 08:29:41,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151452733] [2024-11-12 08:29:41,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:29:41,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-12 08:29:41,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:29:41,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-12 08:29:41,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1199, Unknown=0, NotChecked=0, Total=1332 [2024-11-12 08:29:41,304 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-12 08:29:41,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 2595 transitions, 43663 flow. Second operand has 37 states, 37 states have (on average 5.837837837837838) internal successors, (216), 37 states have internal predecessors, (216), 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) [2024-11-12 08:29:41,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:29:41,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-12 08:29:41,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand